Abstract: A multiple-state health monitoring apparatus for critical components in a hoisting system includes a frame. The frame is a square structure formed by welding a plurality of rectangular steels. A steel wire rope is arranged around a periphery of the square structure. A power system, a friction-and-wear apparatus, a brake-and-wear apparatus, and a tensioning apparatus are sequentially mounted from left to right on a bottom layer of the square structure. A bearing signal collection system, a tension sensor, an excitation apparatus, and a steel-wire-rope image collection system are sequentially mounted from left to right on a top layer of the square structure. The steel wire rope sequentially passes through all the apparatuses or systems and is driven by the power system to perform circling. All the apparatuses or systems are used to monitor an operation status of the steel wire rope.

Abstract: A media tester including a test body having an axial bore configured to receive media having a minimum bend radius, an adjustment member connected to the test body, the adjustment member configured for rotation about the axial bore of the test body, and a media engaging member connected to the adjustment member, the media engaging member configured to receive the media.

Abstract: A cable test bench for testing a test cable to establish service life, replacement age, number of flex cycles, and/or winding behavior, has a deflection system including at least one deflector roll to deflect the test cable, one test cable drive to wind and unwind the test cable via the deflection system, and one test load to load the test cable. The cable test stand has an additional cable test drive for winding and unwinding a safety cable and/or the named test cable, and a control device for controlling the additional cable drive and/or the test cable drive in a manner wherein the two are adjusted to each other, in such a manner that the load of the test cable can be adjusted differently for different test cable segments and/or different winding directions and/or different winding cycles and/or different phases of a winding cycle.

Abstract: A well access line monitor. The monitor may be employed to directly interface and establish the current yield strength of a plastically deformable line such as coiled tubing or slickline. Such interfacing may take place in advance of, or during an application. Thus, the fitness of the line for the application may be established in real-time. Further, with comparison to a reference log of projected yield strength for the line over the course of multiple bend cycles, the remaining life of the line may also be established.

Abstract: A media tester including a test body having an axial bore configured to receive media having a minimum bend radius, an adjustment member connected to the test body, the adjustment member configured for rotation about the axial bore of the test body, and a media engaging member connected to the adjustment member, the media engaging member configured to receive the media.

Abstract: A dryer felt tension indicator apparatus is disclosed for indicating a value which is proportional to a tension applied between a frame and a stretcher roll for guiding a dryer felt. The value is proportional to a tension of the dryer felt. The apparatus includes a carriage for rotatably supporting the stretcher roll. A wheel is rotatably secured to the carriage and a tensioner having a first and a second extremity cooperates with and extends around the wheel such that the wheel is disposed between the first and the second extremity of the tensioner. A tension indicator has a first and a second end. The first end of the tension indicator is anchored to the frame.

Abstract: An apparatus and method for determining the standardized melt elasticity (sME) force of a thermoplastic polymer needed to stretch a strand of melted polymer at a speed about thirty three times faster than the speed of strand formation from a body of melted polymer under constant stress from an unencumbered dead weighted piston.

Abstract: A yarn entanglement strength tester includes first and second rolls that apply incrementally increasing elongation levels on a yarn in order to remove entanglements from the yarn. The yarn entanglement strength tester also includes a third roll, where the second and third rolls apply a constant tension on the yarn which enables optimum diameter measurements of the yarn by a camera. The camera captures images of diameters of the yarn after each of the incrementally increasing elongation levels is applied to the yarn. The yarn entanglement strength tester further includes a computing device that controls operation of the camera and the first, second, and third rolls, and determines an entanglement strength of the yarn based on the captured images of the diameters of the yarn after each of the incrementally increasing elongation levels is applied to the yarn.

Abstract: A well access line monitor. The monitor may be employed to directly interface and establish the current yield strength of a plastically deformable line such as coiled tubing or slickline. Such interfacing may take place in advance of, or during an application. Thus, the fitness of the line for the application may be established in real-time. Further, with comparison to a reference log of projected yield strength for the line over the course of multiple bend cycles, the remaining life of the line may also be established.

Abstract: An apparatus and method for determining the standardized melt elasticity (sME) force of a thermoplastic polymer needed to stretch a strand of melted polymer at a speed about thirty three times faster than the speed of strand formation from a body of melted polymer under constant stress from an unencumbered dead weighted piston.

Abstract: A method and a device (10) for reorganizing the fibers of a matrix in a living tissue sheet (S) by inducing controlled mechanical constraints in the living tissue (S) sheet thus causing the fibers of the matrix to be aligned parallel to the strain orientation. The sheet (S) is held in a stretched state until the fibers set in place.

Abstract: The present disclosure relates to a handheld, single-piece wear gauge for chains, and more specifically, to a wear gauge with an elongated body carved into segments with markings, varied widths, and varied heights arranged along a guiding back rail. A roller chain wear gauge includes a single-piece body with a measuring end and a handle connected to the measuring end, wherein the measuring end includes a plurality of adjacent and contiguous calibrated segments each having a measuring length, a measuring width, and a measurement marking, and wherein the measuring end defines on one side a back rail formed by an alignment of a first side of each of the calibrated segments and a step function formed by the second side of each of the calibrated segments.

Abstract: The present disclosure relates to a handheld, single-piece wear gauge for chains, and more specifically, to a wear gauge with an elongated body carved into segments with markings, varied widths, and varied heights arranged along a guiding back rail. A roller chain wear gauge includes a single-piece body with a measuring end and a handle connected to the measuring end, wherein the measuring end includes a plurality of adjacent and contiguous calibrated segments each having a measuring length, a measuring width, and a measurement marking, and wherein the measuring end defines on one side a back rail formed by an alignment of a first side of each of the calibrated segments and a step function formed by the second side of each of the calibrated segments.

Abstract: A cable testing device adapted for testing a resisting conical-rotation ability of a cable includes a clipping apparatus for clipping one end of the cable, a rotatable apparatus disposed below the clipping apparatus and driven to rotate round an axis thereof, a first inverting member positioned at the rotatable apparatus and apart from the axis of the rotatable apparatus, a second inverting member positioned at the rotatable apparatus and being in substantially vertical line with the axis of the rotatable apparatus, and a connecting member. One end of the connecting member is connected with the cable. The other end of the connecting member sequentially detours the first inverting member and the second inverting member to be tied to a weight freely drooping with a barycenter thereof lying in line with the axis of the rotatable apparatus.

Abstract: In the case of a measuring roller for determining flatness deviations when handling material in strip form, for example when rolling metal strip, the stress distribution is measured over the width of the strip with the aid of piezoelectric sensors, which are arranged in longitudinal recesses of a solid roller at a distance from the casing surface and are wedged there

Abstract: A system for making extensional measurements on a sample includes an armature, a motor drive shaft, a moveable cylinder, and a fixed cylinder. The motor drive shaft is attached to the armature. The moveable cylinder is mounted on the armature. The sample is stretched between the moveable cylinder and fixed cylinder by the rotation of the moveable cylinder around the axis of the fixed cylinder and rotation of the moveable cylinder about its own axis. The resistance of the sample produces a torque on the moveable cylinder and the fixed cylinder. The torque is measured on the moveable cylinder or on a transducer shaft attached to the fixed cylinder. The system is adaptable to a commercial rotational rheometer.

Abstract: A tortilla press utilizing a single sensor provides improved efficiency and accuracy. The press has a belt driven by a motor and a platen driven by a hydraulic cylinder. The motor is controlled by an AC inverter. A programmable logic controller (PLC) controls the AC inverter and hydraulics associated with the hydraulic cylinder of the platen. The PLC coordinates the movement of the belt and the movement of the platen. A sensor detects detectible elements on the belt and sends a signal to the inverter to initiate stopping of the belt. The inverter detects the zero hertz from the motor once the motor and belt have stopped and sends a signal to the PLC indicating that the belt has stopped. The PLC in turn passes a command that sends a signal to bring the platen down.

Abstract: Methods of measuring stress forces in refiners are disclosed in which the refiners include refining disks with a refining surface and refining bars extending across the refining surface, as well as a measuring surface comprising a portion of the refining surface, the measuring surface being movably mounted on the surface of at least one of the refining disks and a pair of rigidly mounted force sensors for producing oppositely directed deflections when the measuring surface is influenced by stress forces, the method comprising resiliently mounting the measuring surface in a direction parallel to the surface of the refining disk and calculating the stress force based on the difference between the deflections measured by the respective pairs of the force sensors. Apparatus measuring stress forces in such refiners are also disclosed.

Abstract: An apparatus for proof testing an optical waveguide fiber includes a first capstan defining a first outer diameter and a continuous first capstan belt under tension and in contact with the first outer diameter of the first capstan. The contact between the first capstan belt and the first capstan defining a first arc of contact, and the first capstan belt defining a first width, a first thickness and a first length. The apparatus further includes a second capstan defining a second outer diameter and a continuous second capstan belt under tension and in contact with the outer diameter of the second capstan. The contact between the second capstan belt and the second capstan defining a second arc of contact, second capstan belt defining a second width, second thickness and a second belt length. The first arc of contact being equal to or greater than about 105° and the second arc of contact being at least 20° greater than the first arc of contact.

Abstract: The invention relates to a proof testing method and a proof testing apparatus for optical fibre where a fibre (1) is guided to a first pulling device (2) and further to a second pulling device (3) and then onto a reel (11, 12), whereby the pulling devices subject the fibre to a desired amount of tensile strength, as a result of which the fibre breaks if the fibre (1) strength is insufficient. To achieve a continuous pulling and proof testing process, the fibre end is guided in the case of a fibre break between the first and the second pulling device (2, 3) by means of a first channel section (5), which guides the fibre to the second pulling device (3). After the second pulling device (3) the fibre end is guided into a second channel section (8) which is off the normal fibre track and along which the fibre (1) is guided into a scrap fibre processing system. At a desired moment the fibre (1) is guided from the second channel section (8) to the normal track, along which the fibre is guided onto a reel (11, 12).

Abstract: In order to provide a tensile testing machine of variously cross-sectioned materials which has a very concise structure to make possible more accurate measurement of tensile force, the testing machine is equipped with two roll stands which have gripping rolls available gripping variously cross-sectioned specimens. One or both of the roll stands are hanging. The machine is also equipped with a device for giving a certain initial load to the load cells placed between the roll stands, if necessary.

Abstract: The present invention is an apparatus for testing the rolling contact fatigue resistance of materials that enables the interruption of testing as well as the continuation of testing from a defined prior state. During testing of the rolling contact fatigue resistance of materials along a surface of the tested object, a testing ball is rolled under appropriate loading and numerous repetitions. The present invention ensures that the appropriate point contact is maintained between the testing ball and the surface of the tested object. The tested object is firmly held in by a clamping plate having a series of supporting protrusions separately arranged in grooves. The position of each protrusion may be fixed within its respective groove to provide a stable mounting area for the tested object. The present invention allows the tested object to be removed and replaced such that a test performed upon the tested object prior to its removal from the clamping unit may be continued upon reinsertion of the tested object.

Abstract: An apparatus for advancing a sliver and sensing thickness variations thereof in a fiber processing machine includes a tongue-and-groove roll pair composed of a tongue roll and a groove roll. The groove roll is radially fixedly supported and has a circumferentially extending groove including a groove bottom. The tongue roll projects into the groove and defines, with the groove roll, a nip through which the sliver passes for being compressed and advanced by the tongue-and-groove roll pair. The apparatus further has a sensing device including a biased, movably supported sensor element projecting into the groove of the groove roll and cooperating with the groove bottom upstream of the nip as viewed in a direction of sliver advance for pressing the sliver against the groove bottom and for undergoing excursions in response to thickness variations of the sliver passing between the sensor element and the groove bottom.

Abstract: Device for measuring tension force in web and wire without giving any permanent affect on the measured object. In goods transportation it is common to use webs to tie down the load to the load carrier, and it is important that the right pretension force is applied to achieve a safe transport. The device enables this force to be checked before and even during the transport. The device is a hand carried device that can be moved across the measured object from the side, perform the measurement after an activation arm has been pulled, and be removed after deactivation without having any remaining affect on the lashing. Technically, this is done when the activation forces the object to bend over a number of rolls. This bending calls for a force perpendicularly to the measured object that is registered, recalculated and displayed as the searched force in the object.

Abstract: The invention concerns a measuring idler-roller for measuring stress distution of flexible bands that are moved in the direction of their length, in which roller force-measuring transducers arranged in recesses or their covers are surrounded by a plastic layer that fills in a gap and prevents the penetration of fine abraded metal particles, and makes easier the installation of the cover and/or the measuring transducer.

Abstract: An arrangement for measuring the planarity of a rolled strip which is under tension in a hot strip rolling train with a roughing train and a finishing train including several roll stands and a reel. At least one measuring roller is arranged in rolling direction between the first roll stand of the finishing train and the reel, wherein the rolled strip is guided over each measuring roller, so that the measuring roller is bent as a result of the strip tension; in addition, pick-ups for measuring bending of the measuring roller are provided.

Abstract: A testing apparatus for determining dynamic strength of sample paper cores includes a rotatably driven pneumatic chuck for engaging the inner surface of a sample core to rotatably drive the sample core, and a variable-tension belt assembly having a flexible belt which is looped over the sample core and tensioned to simulate the load applied to a paper core in actual use. The belt is tensioned by a pneumatic cylinder which is controlled under feedback control by a servo valve and a computer controller so that the load applied to the sample core accurately tracks a predetermined desired load schedule versus time.

Abstract: A saw blade (10), in particular for band saws, is moved through a measuring path and a rolling path in a direction of travel (A) which essentially corresponds to its longitudinal direction, with two marginal regions of the saw blade (10) being supported on the measuring path-and held down in a start portion and an end portion of same and thus being held in a common reference plane which contains the direction of travel (A) and the saw blade (10) being lifted above the reference plane by a supporting force which is exerted only in the central area of the measuring path.

Abstract: A deflecting roller for sensing the distribution of stress along the roller while the roller deflects a strip of sheet material, and in particular, a deflecting roller having a plurality of stress sensors disposed around the roller such that the stress sensors sense the radially acting force on the roller, without contributing any interfering forces thereto. The roller has a plurality of measuring locations defined about the circumference of the roller. Each measurement location includes a recess in the roller; a stress-responsive sensor disposed in the recess; and a sensor cover positioned within the recess so as to cover the stress-responsive sensor. The sensor cover has the same cross sectional shape as the recess so that the sensor cover is guided by the wall of the recess for radial movement with respect to the roller. The sensor cover does not rest on a shoulder in the recess.

Abstract: The prevailing tension in an elongate strand, such as a textile yarn, is instantaneously measured, even at very low levels of tension and at fine incremental changes in tension, by a tension measuring apparatus utilizing a pair of fixed contact arms spaced from one another to define a strand contact line therebetween and an intermediate cantilevered sensing arm disposed at an equal spacing from each fixed contact arm and at a lateral spacing from the stand contact line. The fixed contact arms and the sensing arm are contacted with the strand simultaneously at the same common lateral side of the strand to cause the strand to deflect from the strand contact line at equivalent strand break angles between the respective strand contact points on the fixed contact arms and on the sensing arm.

Abstract: An optical fiber bending stress proof tester 40 which provides multiple mandrels or roller elements 22 and 24 for applying compression and tension stresses to multiple planes on the periphery of an optical fiber 10. In one embodiment, first and second roller elements 22 and 24 are incorporated in a roller block 50 which is stable in either of two angular orientations with respect to the longitudinal axis of the fiber 10. The fiber 10 is bent in an S curve around the two rollers 22 and 24. The rollers 22 and 24 control the bend radius and therefore the stress induced in the outer fibers of the filament. In a specific extension of this embodiment, multiple sets of first and second roller elements are provided in additional roller blocks. Each block is stable in a first loading position and a second test position. In the test position, discrete planes around the entire periphery of the fiber are exposed to bending stress in a single pass through the tester.

Abstract: A hand tool for tension testing of flexible elongated members and connections thereto comprises a drawn cup roller clutch having a shaft and a bearing assembly. The bearing assembly and the shaft are coupled for relative concentric rotation about an axis through the shaft. First and second plier-like handles are connected for affecting unidirectional rotation of the shaft with respect to the bearing assembly and are arranged in opposed relationship whereby movement of the handles towards one another effects relative rotation of the shaft and the bearing assembly in a preselected direction. A compression gauge is attached to the outer surface of an extended portion of one of the handles disposed oppositely from the handles. The gauge includes a U-shaped compression beam and a dial indicator calibrated to read force as a function of relative displacement between opposed arms of the U-shaped beam.

Abstract: A method of measuring adhesive strength is disclosed, characterized by the steps of:keeping the surface of a substrate adhered with an adhesive sheet in a fixed relative position to the pickup roller an auxiliary roller projecting from a machine frame;securing the tip end of either the adhesive sheet or the lead-in tape leading said adhesive sheet to the pickup roller;setting a specific peeling angle for peeling the adhesive sheet from the surface of the substrate;pulling the adhesive sheet by rotating the pickup roller at a constant speed while maintaining the set angle;peeling off the adhesive sheet 2 from the substrate, and subsequently winding it onto the pickup roller;detecting the torque of the pickup roller using a torque detector; anddisplaying and/or recording the adhesive strength of the adhesive sheet to said substrate based on output signals from the torque detector.

Abstract: The method and apparatus employs a frequency sensitive electric motor and control system to measure the adhesive bond between a carrier tape and a cover tape adapted to carry miniature components. The adhesive bond strength is dynamically tested and recorded by separating the cover tape from the carrier tape as an energizing signal of predetermined frequency is applied to a frequency sensitive motor for a predetermined period of time while the force required to cause adhesive bond failure is measured and recorded.

Abstract: Apparatus for measuring tensile strength of hair samples in which the test is controlled automatically to provide the average value of a plurality of hair samples. The apparatus is digitally controlled to provide a rapid testing cycle time. Tension is applied by a pivoted arm, and rotated by a solenoid that is controlled digitally to provide substantially constant velocity to the arm. A strain gage secured to the arm measures the force extended by the arm in tensioning the hair sample.

Abstract: Optical fiber proof testing equipment has a rotary drive and two pulleys directly coupled to the drive. A fiber is taken from fiber drawing equipment around part of the circumference of the first pulley, along a guide track and around part of the circumference of the second pulley. Respective continuous belts apply a resilient bias to clamp the fiber to the pulleys, the resilient bias being adjustable. The second pulley is marginally greater in diameter than the first pulley so as to establish a predetermined tensile stress in fiber moving between the two pulleys. The test equipment is used after fiber has been drawn in a drawing tower and then coated and before the fiber is stored on reels. The tensile force on the fiber can be changed by changing the diameter of the first or second pulleys. In addition some incremental change in the tensile force can be obtained by adjusting the resilient bias provided by the continuous belt.

Abstract: A yarn tension control for a yarn testing machine includes: a support; a carriage moveable relative to the support; and a tension arm pivotably mounted to the carriage for engaging the yarn. The tension arm is set in a neutral position to apply a predetermined tension to the yarn. Rotation of the arm indicates an incremental change in the yarn tension. Upon such a change in tension the carriage is moved from an initial position to a compensating position to re-establish the predetermined tension. The drive elements then vary the speed of the yarn to produce an offsetting incremental change in the yarn feed rate to restore the tension arm to its neutral position.

Abstract: A method of proof testing an optical glass fibre by pulling it around a free roller whose radius is sufficiently small to impart the strain necessary to detect fibres whose surface or near surface flaws weaken the fibre below a required strength. Proof testers are disclosed incorporating, single rollers, a set of three parallel rollers and a jig holding four sets of three rollers. Proof testers incorporating the extra rollers whose axes are at different angles are shown to more thoroughly explore the surface of the fibre for cracks.

Abstract: Fibers, particularly optical fibers, are tested for determining their tene strength in expected environments. A pair of sheaves, on journaled and the other fixed receive a looped length of fiber and are placed within a cylindrical shell which is filled with an expected environmental medium, such as seawater. The sheaves are pulled apart subjecting the fiber to tensile loading and a strain gauge provides responsive read-outs so that the fiber's fatigue strength can be determined. The size of the sheaves and adhesively securing the loose ends of the fiber prevents the generation of any spurious pinching torsional stresses. Placing the fiber in the environmental fluid allows a monitoring of the effects of the fluid on the fiber's cladding and core so that the strength limits of the fiber are accurately determined under simulated operational conditions.

Abstract: Tension detector for an advancing layer of straightened yarns.A section of yarns of the layer 5 is guided along a V-path 5a by means of three guide member 1,4 of which a first group 1 is situated on one side of the layer 5 and a second group 4 is situated on the other side of the said layer and between the two members 1; the relative positions of the axes of the three guide members 1,4 are fixed and the force exerted by the yarn layer 5 on one of the said groups of members is measured with respect to that (or those) of the other group.The invention is particularly applicable to the slashing of yarn warps on a slasher.

Abstract: First and second tractor assemblies apply a preset tension to incremental lengths of fiber which moves continuously through the apparatus. The apparatus performs the functions of fiber pulling and non-destructive testing of all of the fiber. Each tractor assembly includes a tractor wheel and belt wheels. A belt extends around the belt wheels and engages the tractor wheel in an arc. The fiber passes between the belt and the tractor wheel in this arc. The second tractor assembly has a constant torque drive with an unloaded speed which is faster than that of the first tractor assembly. The second tractor assembly pulls the fiber thereby reducing the speed by causing the constant torque device to overload and slip.