Including Corrosion Or Erosion Patents (Class 324/700)
  • Patent number: 11365963
    Abstract: A state determination apparatus 100 determines the state of a structure 200. The state determination apparatus 100 includes a measurement unit 10 configured to measure a deflection amount and a surface displacement amount in each of a plurality of target regions that are preset on the structure 200, a feature value calculation unit 20 configured to calculate, for the respective target regions, feature values each indicating a relationship between the deflection amount and the surface displacement amount, using the measured deflection amount and surface displacement amount, a spatial distribution calculation unit 30 configured to calculate a spatial distribution of the feature values using the feature values calculated for each of the target regions, and a degradation state determination unit 40 configured to determine a degradation state of the structure 200 based on the spatial distribution of the feature value.
    Type: Grant
    Filed: September 12, 2017
    Date of Patent: June 21, 2022
    Assignee: NEC CORPORATION
    Inventors: Subhajit Chaudhury, Hiroshi Imai
  • Patent number: 11346766
    Abstract: Disclosed is a method for estimating deterioration of a steel support structure (180) supporting an offshore wind turbine (181). The steel support structure (180) being made of a first type of steel, the method comprising the steps of: (a) providing a first sensor (111) having one or more sensor elements, wherein a first sensor element of the one or more sensor elements is made of a type of steel corresponding to the first type of steel; (b) arranging the first sensor (111) in connection with said steel support structure (180); (c) inducing an electrical current through at least one of the one or more sensor elements; (d) monitoring the deterioration of a part of the first sensor (111) by in a first time interval measuring electrical properties of the first sensor (111) and storing the measurements as first data; (e) estimating the deterioration of the steel support structure (180) from the first data.
    Type: Grant
    Filed: March 7, 2018
    Date of Patent: May 31, 2022
    Inventor: Birit Buhr Jensen
  • Patent number: 11300497
    Abstract: The present disclosure relates to a method, system and electrode for evaluating a condition of steel reinforcements in concrete structures. A reference electrode is positioned on a first area on a concrete structure. An electromagnetic survey is performed to estimate a reference voltage for the reference electrode. A measurement electrode is positioned on a second area on the concrete structure. A difference of potential between the reference electrode and the measurement electrode is determined. A voltage at the measurement electrode is determined based on the reference voltage and on the difference of potential. A corrosion probability at the second area is determined based on the voltage at the measurement electrode. Several electrodes may be placed in an array. Any one of the electrodes may be moved to various areas on the concrete structure.
    Type: Grant
    Filed: May 6, 2020
    Date of Patent: April 12, 2022
    Assignee: AUSCULTECH INC.
    Inventor: Jamal-Eddine Rhazi
  • Patent number: 11266864
    Abstract: A corrosion monitoring device includes a sensor assembly and a detector circuit. The sensor assembly includes at least one sensor portion disposed in an interior of a pipe in a fire sprinkler system for sensing corrosion of a wall of the pipe. The detector circuit transmits an electrical signal through the at least one sensor portion, monitors an electrical characteristic of the at least one sensor portion based on the electrical signal, compares at least one of the monitored electrical characteristic and a change in the electrical characteristic of the at least one sensor portion to at least one of a predetermined value and a previously monitored electrical characteristic, determines a corrosion status indicative of at least one of a corrosion level and a rate of corrosion of the pipe wall based on the comparison, and outputs an indication of the corrosion status.
    Type: Grant
    Filed: January 18, 2019
    Date of Patent: March 8, 2022
    Assignee: Tyco Fire Products LP
    Inventors: Jeremy Tyler Cogswell, Arash Agan, Cassandra Lyn DeNunzio
  • Patent number: 11150209
    Abstract: A measurement system may include an electrical signal source; a plurality of electrical contacts electrically coupled to a tested material; a respective resistor associated with each electrical contact; a common node to which the respective resistors are electrically connected; and a control module. The control module may cause the electrical signal source to be electrically connected to a selected electrical contact as an input electrical contact. The remaining electrical contacts are electrically connected to a return node of the electrical signal source as extraction electrical contacts. The control module also may cause the electrical signal source to output an electrical signal to an input electrical contact; cause a respective electrical signal parameter to be determined at the respective resistor associated with each respective extraction electrical contact; and determine whether the tested material includes a crack or other defect based on the respective electrical signal parameters.
    Type: Grant
    Filed: June 29, 2018
    Date of Patent: October 19, 2021
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Christopher R. Yungers, David H. Redinger, Eric M. Chinnock, Jennifer F. Schumacher
  • Patent number: 11084984
    Abstract: Embodiments of the present invention include a novel continuous or semi-continuous process which results in the partial or total improvement of heavy oil. The improvement of the heavy oil is a result of thermally heating the oil at an interval where visbreaking occurs, thereby reducing a viscosity of the heavy oil. The core of the heating step occurs through a heating apparatus of the packed bed type including superparamagnetic, paramagnetic, and/or magnetic materials.
    Type: Grant
    Filed: June 9, 2017
    Date of Patent: August 10, 2021
    Assignee: NEOTECHNOLOGY LLC
    Inventors: Alonso A. Alvarado, Carolina Blanco, Maria I. Briceño, Alexandra Castro, Douglas Espin
  • Patent number: 10753852
    Abstract: A computer-based corrosion/erosion module, communicatively coupled with a probe, estimates corrosion/erosion rates in a pipeline based on metal loss measurements. A High Integrity Protection System (HIPS), upstream of the corrosion/erosion module, includes at least two pressure-sensing elements, connected to the pipeline, for capturing pressure readings associated with inside pressures of the pipeline. The HIPS also includes at least two final elements configured to stop a flow of fluid through the pipeline. A logic solver, coupled with the corrosion/erosion module and the HIPS, is configured to automatically monitor mechanical integrity of the pipeline in real time using the captured pressure readings and estimated metal loss measurements. The logic solver determines a trip set point adjustment using the estimated metal loss measurements and provides the trip set point adjustment to the final elements.
    Type: Grant
    Filed: May 10, 2016
    Date of Patent: August 25, 2020
    Assignee: Saudi Arabian Oil Company
    Inventor: Pedro A. Mujica
  • Patent number: 10502676
    Abstract: Corrosion sensors are described. The corrosion sensors may include components formed from carbon nanotube structures and a corroding element formed of a material which corrodes more quickly than a target material being monitored by the corrosion sensor. The corroding material may be exposed to the environment to which the target material being monitored is exposed. The corrosion sensor may be passive, thus consuming little power.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: December 10, 2019
    Inventors: Seth S. Kessler, Christopher T. Dunn, Yosef Stein
  • Patent number: 10436702
    Abstract: A corrosion monitoring system includes at least one corrosion sensor. The corrosion sensor includes a metallic plug having at least one opening, at least one ceramic sheath in the opening of the metallic plug, and a plurality of probes. Each probe has a central portion with a predetermined cross sectional area extending from the metallic plug. The ceramic sheath electrically isolates each first end and each second end of the probes from the metallic plug and the other first ends and second ends. The probes are sized to provide a distribution of predetermined cross sectional areas of the central portions. The corrosion monitoring system also includes a resistance meter measuring an ohmic resistance for at least one of the probes and a computer determining a corrosion rate by correlating a rate of change of the ohmic resistance to the corrosion rate of the probe.
    Type: Grant
    Filed: May 9, 2016
    Date of Patent: October 8, 2019
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Krishnamurthy Anand, Paul Stephen Dimascio, Sundar Amancherla, Rebecca E. Hefner
  • Patent number: 10416071
    Abstract: A corrosion detection circuit according to an embodiment of the present invention includes an insulating board; a test chip having a corrodible metal, mounted on the surface of the insulating board; a plurality of resistors each having a higher resistance value than the test chip after a change due to an environment including contact with the test chip and the adhesion of dust to the test chip; and a voltage detection circuit for detecting the output voltage of a divided voltage output point, when a voltage is applied to the test chip and a voltage dividing circuit using the plurality of resistors. The voltage detection circuit detects a break in the test chip by corrosion based on a variation in the output voltage.
    Type: Grant
    Filed: May 13, 2016
    Date of Patent: September 17, 2019
    Assignee: FANUC CORPORATION
    Inventors: Norihiro Chou, Kiichi Inaba
  • Patent number: 10352696
    Abstract: Ultrasonic transducers are imbedded into sacrificial metal coupons which are located in the vicinity of underground or aboveground structures, such as a pipe or tank, which allow for the measurement of the effectiveness of impressed current cathodic protection systems and can be used to determine the corrosion rate of the structure that is being protected. When excited by a pulser-receiver excitation pulse, the ultrasonic transducers can be used to determine the thickness of the coupon and its rate of change over time. The sacrificial metal coupon ultrasonic transducer assembly can be located in the vicinity of underground piping, under or inside of a tank, underground or underwater, or inserted into structures where absolute material loss values or material loss rate of change is being monitored.
    Type: Grant
    Filed: September 2, 2016
    Date of Patent: July 16, 2019
    Assignee: BERKELEY SPRINGS INSTRUMENTS LLC
    Inventor: Eugene B. Silverman
  • Patent number: 10345221
    Abstract: A sacrificial metal coupon is provided with one or more ultrasonic transducers which, when excited by a pulser-receiver excitation pulse, determines the thickness of the coupon and its rate of change over time. The sacrificial metal coupon ultrasonic transducer assembly can be inserted into the liquid stream of a pipe, under or inside of a tank, underground or underwater, or inserted into structures where absolute material loss values or material loss rate of change is being monitored.
    Type: Grant
    Filed: December 23, 2015
    Date of Patent: July 9, 2019
    Assignee: BERKELEY SPRINGS INSTRUMENTS LLC
    Inventor: Eugene B. Silverman
  • Patent number: 10274462
    Abstract: A device for improving the accuracy and precision of measuring equipment changes due to corrosion, erosion, build-up of material, and combinations thereof. Increased control over the placement and removal of a coupon within the equipment is provided. Embodiments of the coupon provide multiple approaches for such measurements such as e.g., weight changes, thickness changes, inspection and analysis of the contacting surface of the coupon, and combination. Improved measurements with coupons using probes such as e.g., ultrasonic transducers is also described.
    Type: Grant
    Filed: April 20, 2017
    Date of Patent: April 30, 2019
    Assignee: Savannah River Nuclear Solutions, LLC
    Inventors: Michael L. Restivo, Kenneth J. Imrich, Samuel D. Fink, Mark R. Duignan
  • Patent number: 10209210
    Abstract: The present invention relates to a measuring device using an electrical conductivity and having a function of informing electrode contamination. The measuring device includes a main body on which a display part is disposed on a surface thereof, and a control module controlling an operation of the measuring device is mounted therein, and a sensor unit disposed on one side of the main body and dipped into the object to measure electrical characteristics of the object to be measured. The sensor unit is driven by the control of the control module, and at least includes a first sensor electrode and a second sensor electrode for measuring electrical characteristics of the object to be measured. The sensor unit further includes a reference electrode disposed between the first and second electrodes at the same distance from each other.
    Type: Grant
    Filed: October 13, 2016
    Date of Patent: February 19, 2019
    Assignee: HM Digital Ltd.
    Inventor: Yun-Ho Son
  • Patent number: 10161893
    Abstract: Methods of extracting complex impedance from selected subsurface volumes of a material under test (MUT) using various embodiments of electrode sensor pairs are provided. The electrode pairs can penetrate into a subsurface of the MUT, and operate below the surface of the MUT. Configurations of electrode pair sensors provide measured data of complex impedance of selected subsurface volumes of the MUT using electromagnetic spectrographic signals over a frequency range. The complex impedance characteristics of the subsurface volumes may be used to identify variations in the properties of the MUT, or be correlated to physical properties of the MUT.
    Type: Grant
    Filed: August 13, 2015
    Date of Patent: December 25, 2018
    Assignee: TransTech Systems, Inc.
    Inventors: Donald D. Colosimo, Sarah E. Pluta, John W. Hewitt
  • Patent number: 10133832
    Abstract: A technique enables simulation of a process performed on an underground formation. The technique comprises forming a cut-out portion in a rock sample and placing a jacket around the rock sample. A sealing collar is inserted into the cut-out portion, and the rock sample is capped between the sealing collar and the jacket. Simulation testing can then be performed on the rock sample through the sealing collar while applying pressure to the rock sample. The sealing collar may be affixed in the cut-out portion.
    Type: Grant
    Filed: August 5, 2014
    Date of Patent: November 20, 2018
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventor: Jeffrey Burghardt
  • Patent number: 10113240
    Abstract: A method and system is disclosed for testing a cathodic protection system that protects a metallic structure with one or more DC power sources electrically connected to the metallic structure and an associated reference electrode. The metallic structure may be cathodically protected at multiple locations. A Cathodic Protection Waveform Monitoring Unit (CPWMU) operates independently from power cycling by the cathodic protection system to measure cathodic protection voltage levels by measuring, over one or more measurement time periods, a voltage differential between the metallic structure and its associated reference electrode, a plurality of times when power provided to the metallic structure is cycled on and off. The CPWMU includes digital storage to store values indicative of the measured voltage differentials over the measurement time period.
    Type: Grant
    Filed: February 16, 2017
    Date of Patent: October 30, 2018
    Assignee: Stratocom Solutions Corporation
    Inventors: Darren Lee Miller, Michael William Novakowicz, Haydn Russell Wintersgill
  • Patent number: 10060870
    Abstract: The invention relates to a system for monitoring a substratum (1) with regard to damage and/or for protecting a substratum (1) from damage. The system comprises: an electrolytically active layer (4), which has a moisture-dependent electrical resistance; at least one electrode pair, the spaced-apart electrodes (3a, 3b) of which are connected to each other by means of the electrolytically active layer (4); and a measuring device, by means of which a property, in particular an electrical quantity of the electrolytically active layer (4) or of the electrodes (3a, 3b), can be measured by using electrodes (3a, 3b) of at least one electrode pair, in particular of each electrode pair, and/or a control device, by means of which a voltage can be applied to the electrodes (3a, 3b) of at least one electrode pair, in particular of each electrode pair.
    Type: Grant
    Filed: November 13, 2014
    Date of Patent: August 28, 2018
    Assignee: RHEINISCH-WESTFAELISCHE TECHNISCHE HOCHSCHULE AACHEN
    Inventors: Michael Raupach, Kenji Reichling, Christian Helm
  • Patent number: 10001452
    Abstract: A method of making a hoist cable capable of continuous resistance monitoring includes applying an electrically-insulating material to at least one strand of a wire rope such that a length of the strand is electrically insulated and an end of the strand is electrically conductive. The end of the at least one strand is joined to other strands of the wire rope such that at least two strands are electrically connected at a free end of the wire rope. A method of inspecting the hoist cable includes transmitting a first electrical signal through a first strand from a hoist drum to a free end of the wire rope and receiving the first electrical signal through a second strand at the hoist drum, the first and second strands being electrically connected at the free end. Using the first electrical signal, the resistance of the wire rope is calculated.
    Type: Grant
    Filed: November 13, 2015
    Date of Patent: June 19, 2018
    Assignee: Goodrich Corporation
    Inventors: William A. Veronesi, Mauro J. Atalla
  • Patent number: 9995711
    Abstract: A method of wear detection of a coated belt or rope includes measuring an initial electrical resistance of one or more cords, strands or wires of the coated belt or rope. The initial electrical resistance is calibrated by repeating the measuring of initial electrical resistance and populating a database with the measured initial electrical resistance values. A true initial resistance is determined from the population of initial electrical resistances and subsequent measured values of electrical resistance of the one or more cords, strands or wires of the coated belt or rope.
    Type: Grant
    Filed: April 2, 2012
    Date of Patent: June 12, 2018
    Assignee: OTIS ELEVATOR COMPANY
    Inventors: Michael Garfinkel, Daryl J. Marvin
  • Patent number: 9880523
    Abstract: According to an embodiment, a time reference device is provided. In the embodiment, the time reference device, includes a corrodible element, wherein a corrosion of the corrodible element advances with advancing time, and a sensor configured for providing a sensor signal, the sensor signal depending on a physical property of the corrodible element; wherein the physical property of the corrodible element changes with a corrosion of the corrodible element and the physical property of the corrodible element is at least one of an electrical property, a magnetic property, and an optical property. A barrier may be provided for defining a permeability for a corrosive substance to the corrodible element.
    Type: Grant
    Filed: June 16, 2014
    Date of Patent: January 30, 2018
    Assignee: NXP B.V.
    Inventor: Thomas Suwald
  • Patent number: 9726594
    Abstract: An under-deposit corrosion (UDC) sensor includes a probe body with a curved concave probe surface that may have pre-deposited or in-situ formed thereon a material that accelerates the process of under deposit corrosion. The UDC sensor uses electrochemically-based localized monitoring techniques for assessing under-deposit pitting corrosion and the effectiveness of chemical treatment programs that mitigate under-deposit corrosion in well tubing, pipelines, vessels, and/or tanks.
    Type: Grant
    Filed: November 18, 2014
    Date of Patent: August 8, 2017
    Assignee: Baker Hughes Incorporated
    Inventors: Vladimir Jovancicevic, Sunder Ramachandran, Carlos M. Menendez
  • Patent number: 9568412
    Abstract: A measuring and assessing method for the AC corrosion risk of a pipeline wherein the coupon is connected to a metallic pipeline buried in the earth and the AC corrosion risk of the pipeline is assessed on the basis of coupon DC current density and coupon AC current density that are acquired from a measured value of a coupon current, wherein the measuring and assessing method includes: a step of specifying frequency to specify a source of AC corrosion from a waveform of the measured value of the coupon current; and a step of calculating a coupon current density whereby a pair of coupon DC current density and coupon AC current density is acquired from the measured value of the coupon current in one time unit by defining one cycle of a specified frequency as one time unit.
    Type: Grant
    Filed: June 4, 2012
    Date of Patent: February 14, 2017
    Assignee: TOKYO GAS CO., LTD.
    Inventor: Fumio Kajiyama
  • Patent number: 9562843
    Abstract: A method of non-destructive evaluation of stress corrosion cracking of structural components made of metal alloys, and a method of evaluation of the remaining lifetime of the structural component made of metal alloys are provided, in which a change in properties of the structural components made of metal alloys being used in operating nuclear power plants is measured according to the degree of atomic ordering (or short range ordering) of alloying atoms, and stress corrosion cracking of the structural components made of metal alloys is thus evaluated. The properties to be measured may be one or more selected from a group consisting of hardness, electrical resistivity and thermal conductivity.
    Type: Grant
    Filed: November 25, 2014
    Date of Patent: February 7, 2017
    Assignee: KOREA ATOMIC ENERGY RESEARCH INSTITUTE
    Inventors: Young-Suk Kim, Sung-Soo Kim, Dae-Whan Kim
  • Patent number: 9500578
    Abstract: Corrosion effects in a solar cell are measured by means of a conduit with electrolytic fluid. The rim of an open end of the conduit is placed against the surface of the solar cell to expose a selected area of the solar cell to the electrolytic fluid, leaving a free part of the planar surface of the solar cell outside the exposed area. Current and/or voltage fluctuations are measured in an electric circuit that contains the electrolytic fluid, an interface between the electrolytic fluid on the exposed area and a conductor layer on the planar surface, and a contact to the conductor layer in the free part.
    Type: Grant
    Filed: January 21, 2014
    Date of Patent: November 22, 2016
    Assignee: STICHTING ENERGIEONDERZOEK CENTRUM NEDERLAND
    Inventors: Evert Eugene Bende, Bas Bernardus van Aken, Willemina Eerenstein, Robert Jan Gouwen
  • Patent number: 9488688
    Abstract: A system including: a cable including: a core capable of transporting at least one useful electric signal; a sheath surrounding said core; at least one conductive wear detection strand embedded in the sheath and substantially extending along the entire length of the cable; and at least one reference conductive element which is not connected to said at least one wear detection strand and substantially extends along the entire cable length; and a control unit capable of measuring the capacitance or the resistance formed between said at least one strand and the reference conductive element.
    Type: Grant
    Filed: June 12, 2014
    Date of Patent: November 8, 2016
    Assignee: Commissariat à l'Energie Atomique et aux Energies Alternatives
    Inventors: Ghislain Despesse, Mikael Carmona, Jean-Michel Leger, Alexandre Paleologue
  • Patent number: 9476689
    Abstract: A wear indication device comprises an outer body exhibiting at least one opening extending at least partially therethrough, and at least one sensor within the at least one opening. The at least one sensor comprises at least one probe, and at least one electronic device operatively associated with the at least one probe. The at least one electronic device comprises at least one power supply and at least one output device. An assembly, and a method of detecting wear to a component of an assembly are also described.
    Type: Grant
    Filed: June 13, 2014
    Date of Patent: October 25, 2016
    Assignee: Dash LLC
    Inventors: Daniel J. Steed, Shiloh D. Poulsen
  • Patent number: 9464979
    Abstract: There is described an apparatus for monitoring a conductive fluid conduit arranged to carry a fluid stream. The apparatus comprises a power supply, a plurality of electrical contact points connected to the fluid conduit, a voltage measurement device, and a processor. The power supply has a reference mode of operation and a sample mode of operation. In the reference mode of operation the power supply is operable to supply an alternating electric current through the fluid conduit at a high frequency such that the current is confined near the surface of the fluid conduit due to the skin effect. In the sample mode of operation the power supply is operable to supply an electric current through a full thickness of the fluid conduit.
    Type: Grant
    Filed: November 23, 2012
    Date of Patent: October 11, 2016
    Assignee: Teledyne Limited
    Inventors: Daniel Clarke, Barry John Hemblade
  • Patent number: 9423366
    Abstract: Corrosion sensor apparatus for detection of contamination affecting metal based components and devices. For example, an apparatus includes: a set of corrosion sensor elements, wherein a width of a first corrosion sensor element is different than a width of a second corrosion sensor element, wherein each corrosion sensor element is susceptible to corrosion caused by an operating environment of the corrosion sensor elements; and a set of reference elements wherein a width of a first reference sensor element is substantially equal to the width of the first corrosion sensor element and a width of a second reference sensor element is substantially equal to the width of the second corrosion sensor element, wherein each reference sensor element is not substantially susceptible to corrosion caused by the operating environment of the corrosion sensor elements.
    Type: Grant
    Filed: January 2, 2014
    Date of Patent: August 23, 2016
    Assignee: GLOBALFOUNDRIES INC.
    Inventors: Hendrik F. Hamann, Levente I. Klein, Michael A. Schappert, Prabjit Singh
  • Patent number: 9389072
    Abstract: A method for embedded failure detection includes embedding radio frequency identification (RFID) tags at varying depths within a composite material comprising a polymer, an epoxy or an aggregate bonded with a fluid. Each RFID tag is attached with an insulated wire loop and configured to communicate tag identification and resistance on each insulated wire loop upon being energized by an RFID reader. The RFID tags are read with an RFID reader after initial curing of the composite material for reference information. The RFID reader reads the RFID tags after a particular time period for current information. The current information is compared to the reference information. It is determined whether a change information has occurred for any of the RFID tags to detect a possible failure of the composite material.
    Type: Grant
    Filed: December 30, 2015
    Date of Patent: July 12, 2016
    Assignee: International Business Machines Corporation
    Inventor: Bruce H. Hyre
  • Patent number: 9292023
    Abstract: In an embodiment, a current internal corrosion level at a current time is read from an internal corrosion sensor that is internal to a computer. An internal corrosion difference is calculated between the current internal corrosion level and a previous internal corrosion level. If the internal corrosion difference is more than a first threshold amount, a first action is performed that decreases an internal temperature of the computer.
    Type: Grant
    Filed: September 12, 2012
    Date of Patent: March 22, 2016
    Assignee: International Business Machines Corporation
    Inventors: Cary L. Bates, Justin K. King, Lee Nee, Michelle A. Schlicht
  • Patent number: 9117609
    Abstract: A contact resistance value detected by a detection means (a resistance detection part) is compared with a predetermined threshold value. A determining means (an abnormality determining part) determines that there is a failure when the contact resistance value exceeds the predetermined threshold value, and then an abnormality detection signal is outputted from an output means (an output part). Therefore, it is possible to detect a failure in a contact, such as oxidization generated on a surface of a contact or contact pressure reduction generated between contacts, based on the contact resistance value of a contact part.
    Type: Grant
    Filed: March 7, 2012
    Date of Patent: August 25, 2015
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventor: Kazuhiro Kodama
  • Patent number: 9063541
    Abstract: A method of controlling corrosion-related plant operation costs is provided, the method including: accumulating real-time corrosion measurements relating to a plant operation; calculating a relative degree of corrosion value that includes consideration of the real-time corrosion measurements; comparing the relative degree of corrosion value to an expected corrosion progression value associated with a predetermined target maintenance cycle; and adjusting a plant operation based on a comparison of the relative degree of corrosion value to the expected corrosion progression value associated with a predetermined target maintenance cycle. An apparatus for controlling corrosion-related plant operation costs is also provided.
    Type: Grant
    Filed: June 20, 2008
    Date of Patent: June 23, 2015
    Assignee: Honeywell International Inc.
    Inventors: Russell D. Kane, Yohki Kajiyama
  • Publication number: 20150123683
    Abstract: A sensor device includes first and second electrodes, a coating film and a functional element. The first electrode includes a first metallic material in which either a first passivation film forms on a surface thereof or the first passivation film present on the surface thereof is lost, in association with changes in the pH of a measurement site. The second electrode includes a second metallic material different from the first metallic material, and is spaced apart from the first electrode. The coating film includes a third metallic material different from the first and second metallic materials. The coating film covers at least the first or second electrode. The functional element is configured to measure a difference in electric potential between the first and second electrodes that changes depending on presence or absence of each of the first passivation film and the coating film in association with the changes in pH.
    Type: Application
    Filed: January 14, 2015
    Publication date: May 7, 2015
    Inventors: Juri KATO, Takao MIYAZAWA
  • Publication number: 20150106036
    Abstract: For a monitored corrosion sensor, such as a sensor based on one or more mechanical oscillators disposed in a fluid flow, one or more values are measured over time. The values can be measured at a desired frequency, such as a once per second, once per minute, or another convenient frequency. The measured data can then be analyzed as a time series. The goal of the analysis is to identify variations in the time series data that are sufficiently unexpected relative to the prior behavior of the time series within a given time window. The identified variations can then, for example, be excluded from consideration when determining a corrosion-related value for the sensor.
    Type: Application
    Filed: October 1, 2014
    Publication date: April 16, 2015
    Applicant: ExxonMobil Research and Engineering Company
    Inventors: Krishnan KUMARAN, Alan Mark SCHILOWITZ, Henry Alan WOLF
  • Publication number: 20150097590
    Abstract: The systems, apparatus, and methods disclosed herein provide access to systems located within a closed structure, such that the systems are traditionally difficult for humans to access. Exemplary structures include an engine compartment, airplane wing, or fuselage. This access allows a system located within the structure to be electrically coupled with an electrical I/O device located outside the structure. Access to a system located within the closed structure is provided by way of a hole.
    Type: Application
    Filed: July 31, 2013
    Publication date: April 9, 2015
    Inventors: Phillip D. Bondurant, Giovanni Nino, David W. Rook, Anthony Mactutis, David Bothell
  • Publication number: 20150000853
    Abstract: Embodiments of the present disclosure include methods to control the quantity of vapor phase corrosion, devices, and the like.
    Type: Application
    Filed: January 21, 2013
    Publication date: January 1, 2015
    Inventors: Marko Kolari, Tuija Suhonen, Jukka-pekka Sirvio
  • Publication number: 20140354307
    Abstract: There is described an apparatus for monitoring a conductive fluid conduit arranged to carry a fluid stream. The apparatus comprises a power supply, a plurality of electrical contact points connected to the fluid conduit, a voltage measurement device, and a processor. The power supply has a reference mode of operation and a sample mode of operation. In the reference mode of operation the power supply is operable to supply an alternating electric current through the fluid conduit at a high frequency such that the current is confined near the surface of the fluid conduit due to the skin effect. In the sample mode of operation the power supply is operable to supply an electric current through a full thickness of the fluid conduit.
    Type: Application
    Filed: November 23, 2012
    Publication date: December 4, 2014
    Applicant: TELEDYNE LIMITED
    Inventors: Daniel Clarke, Barry John Hemblade
  • Patent number: 8886468
    Abstract: A system for monitoring the structural integrity of structural members of a building using radio frequency identification tags. A plurality of radio frequency modules are secured to structural members, each module including a radio frequency identification tag, a micro processor, a first memory, one or more sensors for measuring data related to the structural integrity of the building members and a transceiver for receiving operational instructions used to monitor the structural integrity of the building and for transmitting the measured data. There is also provided a computing system that transmits the operational instructions to the radio frequency modules and receives the measured data from the modules. In addition, the computing system stores the measured data in a second memory and processes the measured data from the modules.
    Type: Grant
    Filed: April 15, 2013
    Date of Patent: November 11, 2014
    Assignee: The Steel Network, Inc.
    Inventor: Edward G. diGirolamo
  • Patent number: 8872522
    Abstract: A electrical circuit includes an excitation voltage connected via a first circuit path to an output, a switching device having a control terminal and first and second controlled terminals connected to the first circuit path, and a controller that generates a control signal provided to the control terminal of the switching device to selectively supply the excitation voltage to the output. Faults in the electrical circuit are detected by monitoring the switching device voltage at one of the controlled terminals of the switching device.
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: October 28, 2014
    Assignee: Hamilton Sundstrand Corporation
    Inventor: James Saloio
  • Publication number: 20140306726
    Abstract: A metal pipe corrosion monitoring device includes a steam introduction unit for introducing thereinto steam flowing through a metal pipe; and a corrosion testing unit provided in the steam introduction unit, characterized in that the steam introduction unit is configured to generate condensed water by condensing some of the steam to create a simulated environment similar to an actual environment in the metal pipe and discharge the condensed water above a predetermined water level to the outside. The corrosion testing unit has one or more contact members that contact with a water line region around a water surface of the condensed water in the steam introduction unit, a water phase region on a condensed water side and a vapor phase region on a steam side, and is configured to be able to measure an electric resistance of the one or more contact members.
    Type: Application
    Filed: October 30, 2012
    Publication date: October 16, 2014
    Applicant: NAIGAI CHEMICAL PRODUCTS CO., LTD.
    Inventors: Haruhisa Miyazaki, Katsumasa Murata, Kazuo Marugame, Masaki Yoshida, Yusuke Suetake
  • Publication number: 20140306725
    Abstract: A system is disclosed for wireless monitoring of corrosion as it occurs in a corrodible object. The system comprises one or more wireless corrosion sensors. A wireless corrosion sensor comprises an antenna assembly for transmitting and receiving radio signals. In the antenna assembly, at least part of the antenna assembly is made out of a corrodible material, such that, as the corrodible material undergoes corrosion, radio signals that are transmitted or received are affected. A remote system can estimate the extent of corrosion that has occurred by monitoring radio signals that are transmitted through the antenna assembly as it undergoes corrosion.
    Type: Application
    Filed: April 15, 2013
    Publication date: October 16, 2014
    Inventor: William N. Carr
  • Patent number: 8860429
    Abstract: A test system for testing a sensor system includes a high-impedance resistor for forming a voltage divider with any corrosion or foreign substance that might be present between a signal conductor and a ground conductor. While a voltage is applied across the voltage divider, the voltage can be measured across the high-impedance resistor for determining whether an undesirable amount of conductance exists between the signal wire and ground. The test system also includes switching means for switching between any number of signal wires of a system undergoing testing.
    Type: Grant
    Filed: April 28, 2010
    Date of Patent: October 14, 2014
    Assignee: Textron Innovations Inc.
    Inventor: Gary S. Froman
  • Patent number: 8823535
    Abstract: Apparatus and method for directly detecting the atmospheric conditions leading to creep corrosion of printed circuit boards (PCBs) well before the PCBs in the computers start suffering from creep corrosion. The embodiment indicates the propensity of the air towards creep corrosion on PCBs. Additionally, to avoid the false reading due to condensed moisture, condensed moisture may be avoided by using a heater attached to the creep corrosion monitor that keeps the creep corrosion monitor above the dew point temperature.
    Type: Grant
    Filed: December 5, 2012
    Date of Patent: September 2, 2014
    Assignee: International Business Machines Corporation
    Inventors: Levente Klein, Prabjit Singh, Jing Zhang
  • Patent number: 8816705
    Abstract: Method and device for monitoring a zone of a metal structure in terms of its electrical resistance in order to detect possible defects in the structure, by periodically passing current through the zone in different directions while measuring and recording voltage drops in a number of selected unit areas (aij) within the zone, and by combining, for each unit area (aij), at least two measured values recorded during at least two measurements made with current passing in different directions, and by comparing values obtained by at least one similarly obtained value made earlier.
    Type: Grant
    Filed: September 25, 2009
    Date of Patent: August 26, 2014
    Assignee: Roxar Flow Measurement AS.
    Inventor: Olav Espejord
  • Patent number: 8810264
    Abstract: A method of sensing corrosion of a pipe covered by a layer of insulation comprises positioning a CUI sensor radially adjacent an outer surface of the pipe. The CUI sensor comprises a non-conductive base having a first end and a second end opposite the first end. In addition, the CUI sensor comprises a first test circuit mounted to the base. The first test circuit includes a first conductor, a second conductor, and a first testing element extending between the first conductor and the second conductor. Further, the method comprises exposing the first testing element to the same environment as the outer surface of the pipe. Still further, the method comprises determining whether the first testing element has corroded through. Moreover, the method comprises assessing whether corrosion of the pipe has occurred based on the determination of whether the first testing element has corroded through.
    Type: Grant
    Filed: September 2, 2011
    Date of Patent: August 19, 2014
    Assignee: BP Corporation North America Inc.
    Inventors: William Mark Bohon, Allan John Perkins
  • Publication number: 20140225631
    Abstract: A measuring and assessing method for the AC corrosion risk of a pipeline wherein the coupon is connected to a metallic pipeline buried in the earth and the AC corrosion risk of the pipeline is assessed on the basis of coupon DC current density and coupon AC current density that are acquired from a measured value of a coupon current, wherein the measuring and assessing method includes: a step of specifying frequency to specify a source of AC corrosion from a waveform of the measured value of the coupon current; and a step of calculating a coupon current density whereby a pair of coupon DC current density and coupon AC current density is acquired from the measured value of the coupon current in one time unit by defining one cycle of a specified frequency as one time unit.
    Type: Application
    Filed: June 4, 2012
    Publication date: August 14, 2014
    Applicant: TOKYO GAS CO., LTD.
    Inventor: Fumio Kajiyama
  • Publication number: 20140210494
    Abstract: Hundreds of thousands of concrete bridges and hundreds of billions of tons of concrete require characterization with time for corrosion. Accordingly, protocols for rapid testing and improved field characterization systems that automatically triangulate electrical resistivity and half-cell corrosion potential measurements would be beneficial allowing discrete/periodic mapping of a structure to be performed as well as addressing testing for asphalt covered concrete. Further, it is the low frequency impedance of rebar in concrete that correlates to corrosion state but these are normally time consuming vulnerable to noise. Hence, it would be beneficial to provide a means of making low frequency electrical resistivity measurements rapidly. Further, prior art techniques for electrical rebar measurements require electrical connection be made to the rebar which increases measurement complexity/disruption/repair/cost even when no corrosion is identified.
    Type: Application
    Filed: January 30, 2014
    Publication date: July 31, 2014
    Applicant: Giatec Scientific Inc.
    Inventors: Pouria Ghods, Rouhollah Alizadeh, Mustafa Salehi
  • Publication number: 20140159751
    Abstract: The invention concerns corrosion sensors comprising a resistor, a voltage meter for determining voltage output across said resistor; and at least three different layers, each layer comprising a different material, said layers comprising: (a) non-corrosive conducting layer; (b) metal layer; and (c) electrically insulating layer deposed between the conducting layer and the metal layer; wherein the resistor connects the conducting layer and the metal layer. The invention further concerns use of such sensors use in monitoring and trouble-shooting corrosion impacts.
    Type: Application
    Filed: August 20, 2013
    Publication date: June 12, 2014
    Inventors: Lloyd Hihara, Alicia Higa-Brauneck, George Hawthorn
  • Patent number: 8723534
    Abstract: A corrosion sensor includes a plurality of metal strips having different thicknesses. A first metal strip with the least thickness is first employed to provide sensitive corrosion detection. After an exposed portion of the first metal strip is consumed, a second metal strip having a second least thickness can be employed to provide continued sensitive corrosion detection employing a remaining un-corroded portion of the second metal strip. The plurality of metal strips can be sequentially employed as exposed portions of thinner metal strips become unusable through complete corrosion and un-corroded exposed portions of thicker metal strips become thin enough to provide sensitive corrosion detection.
    Type: Grant
    Filed: January 10, 2011
    Date of Patent: May 13, 2014
    Assignee: International Business Machines Corporation
    Inventors: S. Jay Chey, Hendrik F. Hamann, Levente I. Klein, Michael A. Schappert, Prabjit Singh