Abstract: The present invention provides an audio device and a display device. The audio device comprises a vibrating diaphragm, an ultrasonic emitting element and a processing unit. The vibrating diaphragm is used for converting an acoustical signal into an electrical signal or converting an electrical signal into an acoustical signal, receiving a reflected wave signal of an ultrasonic signal generated by the ultrasonic emitting element after reflected from the a surface of an object to be detected, converting the reflected wave signal into an electrical signal, and sending the electrical signals to the processing unit. The processing unit is used for processing the converted electrical signals to obtain surface feature information of the object to be detected.

Abstract: A method and system of detecting, localizing, and characterizing a defect at one or more spatial points of interest on a structure. The method may include collecting first data in a first state using one or more transducers on the structure, collecting second data in a second state subsequent to the first state, computing a scattered impulse response based on the collected first data and the collected second data, comparing the scattered impulse response with an estimated scattered impulse response corresponding to the case when damage is present at one or more spatial points of interest on the structure, and combining the generated comparison results to detect, localize, and characterize a defect at the one or more spatial points of interest on the structure.

Abstract: A method and system for checking functionality of an ultrasound therapy head. The waveform profile for typical ultrasound reflections for a functional therapy head are stored, and before use of a therapy head, an ultrasound energy burst (700) is sent, and the actual waveform profile of the returned reflections (702) are compared to the stored waveform profiles (706). If the actual profiles are not sufficiently close to the stored profiles, then a first signal (712) may be generated, which may cause the ultrasound therapy device to shut down or may generate a warning. If the actual profiles are sufficiently close to the stored profiles, then operation may continue (714), or a second signal may be produced, permitting operation of the ultrasound therapy device.

Abstract: A fluid 10 is contained within a chamber 12. The chamber wall 14 has an inner surface 16 exposed to the fluid 10 and an outer surface 18 separated from the inner surface 18 by the material 20 of the wall 14. Ultrasound 22 is introduced into the material 20. Measurement of the time of flight of the ultrasound 22 through the body 20 allows a measurement to be made of the pressure of the fluid 10.

Abstract: A flowmeter for detecting fluid flow rates in a pipe includes a tube having a channel disposed in the pipe through which fluid in the pipe flows. The flowmeter includes an upstream transducer in contact with the pipe and positioned so plane waves generated by the upstream transducer propagates through the channel. The flowmeter includes a downstream transducer in contact with the pipe and positioned so plane waves generated by the downstream transducer propagate through the channel and are received by the upstream transducer which produces an upstream transducer signal. The downstream transducer receives the plane waves from the upstream transducer and provides a downstream transducer signal. The flowmeter includes a controller in communication with the upstream and downstream transducers which calculate fluid flow rate from the upstream transducer signal and the downstream transducer signal. A method for detecting fluid flow rates in a pipe.

Abstract: There is provided a piezoelectric device, including: a multilayered body in which a piezoelectric layer having a first internal electrode formed thereon and a piezoelectric layer having a second internal electrode formed thereon are alternately formed; a first insulating via formed in the first internal electrode layer; a second insulating via formed in the second internal electrode layer; a first conductive via formed in the multilayered body and penetrating through the first insulating via; and a second conductive via formed in the multilayered body and penetrating through the second insulating via, wherein a diameter of the first insulating via is larger than a diameter of the first conductive via, and a diameter of the second insulating via is larger than a diameter of the second conductive via.

Abstract: An active ultrasonic room occupancy sensor with the output amplitude of the transmitter controlled by the amplitude of power applied to the transmitter to control the zone of coverage for a sensor. An adjustable voltage regulator under control of a microcontroller applies controlled amplitude voltage to the transmitter to adjust the output amplitude of the transmitter. The adjustable amplitude transmitter allows an occupancy sensor to have its total output energy adjusted to conform to the area to be covered. Lowering the total ultrasonic energy in the monitored space lowers the sensitivity of the receiver to inappropriate activations. Lowering the input power to the transmitter also lowers the total internal system noise and provides an improved signal to noise ratio in the receiver. Alternatively, the power applied to the receiver may also be controlled by an adjustable voltage regulator under control of the microcontroller to improve receiver efficiency.

Abstract: Stacked layers of non-continuous opaque layer structures are disclosed herein that may be configured to block radiation such as visible light or other forms of light, while at the same time allowing penetration of ambient gases. In one example, such non-continuous opaque layer structures may be configured as stacked non-continuous metal layer structures that together fully block penetration of radiation while at the same provide sufficient open spaces between and/or within the metal layer segments of a given integrated circuit layer to meet maximum metal spacing rules. In another example, such non-continuous opaque layer structures may be configured as capacitive structures.

Abstract: Disclosed are ultrasonic wireless power transmitter and receiver apparatuses, and a method for wireless charging thereof.

Abstract: Provided are a medical system and a method for providing measurement information by setting a three-dimensional (3D) caliper on a 3D image. The medical system includes: an image data acquisition unit that acquires image data corresponding to a 3D image of a living body including an object; a user input unit that receives user input information; and a processor that generates 3D data by using the image data and the 3D image by using the 3D data, detects 3D geometry information corresponding to a 3D caliper from the 3D data based on the user input information, sets the 3D caliper on the 3D image based on the detected 3D geometry information, and creates measurement information.

Abstract: An ultrasonic sensor assembly detects a characteristic of a pipe. The ultrasonic sensor assembly includes first and second transducer rings spaced apart along a length of the pipe. Each of the first and second transducer rings can transmit a first wave longitudinally along the pipe and receive a reflection of the transmitted first wave from the characteristic. The first transducer ring can use results related to the reflection of the transmitted first wave to guide a second wave along the pipe that is received by the second transducer ring. Methods of detecting a characteristic of the pipe are also provided.

Abstract: A phased-network ultrasound transducer for medical use, includes a single support (2) and a group of transducer elements (3) distributed randomly on the surface of the support (2), the transducer elements (3) being fixed. The group includes at least two sub-groups of transducer elements (3), each of the sub-groups having a different geometric point of convergence such as to focus an ultrasound energy in a different coverage volume (4, 5) such that the arrangement of the coverage volumes covers a target volume to be treated. In addition, the transducer includes control elements for controlling the transducer elements (3) independently of one another.

Abstract: NDT inspection of an austenitic weld between two CRA Clad pipes using a phased ultrasonic transducer array system is described. The method may be performed during laying of gas/oil fatigue sensitive pipelines, for example, at sea. Two types of UT inspection may be generated simultaneously by a Phased Array on each side (Upstream and Downstream) of a girth weld. Firstly, mode converted longitudinal waves are used. These waves have properties that they propagate well. Shear waves are also used. The combination of these two ultrasonic waves, with the addition of surface waves, enables 100% of the girth weld to be inspected to the standard required in fatigue sensitive welds, such as Steel Catenary Risers. Shear waves and compression waves are emitted substantially contemporaneously. Defects may be detected and measured using time of flight information and amplitudes of radiation detected on reflection and on diffraction from the defect.

Abstract: An insulated sounder assembly may include: a) a sounder cup having a bottom and a sidewall; b) a piezoelectric element positioned in the bottom of the cup; c) a potting layer within the sounder cup and spaced apart from the piezoelectric element so that the potting layer contacts the cup sidewall for a distance of at least 3 mm around the entire circumference of the cup, and so that a gap exists between the piezoelectric element and the potting layer, with the gap being sufficient to allow vibration of the piezoelectric element in the sounder cup without restriction by the potting layer; and d) an electrical contact wire attached to the piezoelectric element to provide a voltage to the piezoelectric element, wherein the electrical contact wire passes through the potting layer so that at least 3 mm of bare wire is completely embedded in said potting layer.

Abstract: A parking sensor device has a casing, a front cover, a sensor module and an assembling clamp. The casing has two first hooking elements. The front cover is mounted on the casing. The sensor module is mounted in the casing and the front cover. The assembling clamp detachably engages the casing and has two second hooking elements. The second hooking elements selectively hook the first hooking elements of the casing respectively. The casing and the assembling clamp are engaged quickly with each other, thereby facilitating the easy fabrication of the parking sensor device and improving the convenience of maintenance of the parking sensor device.

Abstract: An ultrasound-based measuring device includes a measurement body, at least one ultrasonic transmitter for coupling ultrasonic measurement signals into the measurement body, and at least one ultrasonic receiver for detecting the ultrasonic measurement signals reflected at an end face of the measurement body. The at least one ultrasonic transmitter emits both a longitudinal and a transverse measurement signal. The influence of a physical disturbance variable on the measurement section traversed by the measurement signals during a determination of a measurement pressure prevailing at the end face and/or of a measurement temperature prevailing at the end face can be taken into account on the basis of the propagation times and a difference between the propagation times of the longitudinal and transverse measurement signals reflected at the end face.

Abstract: One aspect of the present invention relates to an examined-portion information acquisition apparatus including two examined-portion holding members each configured to hold one of two examined portions, a receiver configured to receive an acoustic wave, and a moving system configured to move the receiver from a position at which the receiver receives an acoustic wave from one examined portion held by one examined-portion holding member among the two examined-portion holding members to a position at which the receiver receives an acoustic wave from another examined portion held by the other examined-portion holding member, wherein the receiver includes a plurality of transducers configured to receive an acoustic wave, and a supporting member on which the plurality of transducers are arranged, and the plurality of transducers are arranged on the supporting member such that directivity axes of some transducers among the plurality of transducers converge.

Abstract: A system and method are disclosed for interrogating a liquid in a container. In one embodiment, methods are provided to interrogate and identify a container material type and a liquid within a container.

Abstract: A capacitance type transducer includes a plurality of cells each having a structure in which a vibrating film is supposed so as to be vibrated. The vibrating film includes: a second electrode formed so that a gap is interposed between the second electrode and a first electrode; and an insulating film formed on the second electrode. The capacitance transducer manufacturing method includes: forming a sacrificial layer on the first electrode; forming a layer including a vibrating film on the sacrificial layer; forming an etching hole to remove the sacrificial layer; and forming a sealing film for sealing the etching hole. Before forming the etching hole to remove the sacrificial layer, a through hole is formed in an insulating film on the second electrode, and a conductor film is formed on the insulating film having the through hole to electrically connect a conductor in the through hole and the second electrode.

Abstract: An ultrasonic sensor includes a cylindrical case having a bottom and a side wall, a piezoelectric element attached to an inner bottom surface of the case, a terminal retainer configured to hold outer terminals and inner terminals, and wires connected to the inner terminals and configured to feed power to the piezoelectric element. The side wall of the case has a thin portion adjacent to an opening of the case and a thick portion adjacent to the bottom of the case. The elastic member is provided between the thick portion and the terminal retainer. An opening region surrounded by the thick portion is preferably covered with the elastic member. The case is preferably internally filled with a filler.

Abstract: Ultrasonic transducers and methods for detecting oblique flaws in cylindrically-shaped objects using pulse-echo testing are provided. By mounting one or more transducers on a rotary tester for testing manufactured objects such as tubes and bars, offsetting each transducer horizontally from its position if it were to emit a beam that is perpendicular to the object's outer surface, and actuating the transducer so as to emit an angled beam, oblique surface flaws and internal flaws may be reliably detected without reducing inspection speed, significantly adding to transducer cross-talk, or requiring significant additional hardware or processing.

Abstract: In some embodiments, processes for testing for structural flaws in sapphire parts such as display cover plates used in the manufacturing of electronic devices are disclosed. A process may include transmitting a destructive acoustic signal onto a sapphire part, and determining whether the sapphire part failed in response to the destructive signal. The destructive acoustic signal may include a Rayleigh acoustic wave, wherein the destructive acoustic signal breaks the sapphire part if the sapphire part has a surface flaw larger than a specified size. In this manner, only sapphire parts that can withstand the destructive acoustic signal are used in manufacturing of the electronic device.

Abstract: A laser beam having a single wavelength emitted from a laser light source is converted at a wavelength shifter into a laser beam having at least two wavelengths, which is further demultiplexed at a beam splitter into a laser beam having a first wavelength and a laser beam having a second wavelength. The output power and pulse width of the laser beam having the first wavelength are adjusted by a first controller so as to reach levels appropriate for generating ultrasonic vibrations without causing damage to an inspection object. The output power and pulse width of the laser beam having the second wavelength are adjusted by a second controller so as to reach appropriate levels for detecting the above-described ultrasonic vibrations. These laser beams are multiplexed by a multiplexer into a single laser beam to be focused onto a surface of the inspection object.

Abstract: The present invention relates to an ultrasound therapy system using high-intensity focused ultrasound. The ultrasound therapy improves ultrasound and heat release characteristics and provides an ultrasound probe which easily performs manufacturing and maintenance processes. According to the present invention, a housing is recessed on the inward side around the upper-part edge. A plurality of mounting holes is uniformly formed from the outside at a constant radius to the edge in the center of the upper part. A plurality of probe units is respectively installed in the plurality of mounting holes to form a sphere on the upper part of the housing. And a grounding film covers the sphere which the plurality of probe units forms.

Abstract: An ultrasonic sensor, including a diaphragm cup, a housing and a decoupling element, the diaphragm cup and housing having a lateral surface, the decoupling element being at least partially made from an elastic material and having a continuous recess bounded by an inner wall of the decoupling element, the diaphragm cup and/or the housing being at least partially situated in the recess.

Abstract: A multi-sensor NDI probe having means for self-alignment of the NDI sensors in conjunction with the movement of the sensor suite along the length of a hollow elongated stiffener having a rounded cap. The apparatus comprises a large-radius curved ultrasonic transducer array with cylindrical focus, which provides complete coverage for the rounded cap, two small-radius convex curved transducer arrays for NDI of the lower outside radii, and two linear transducer arrays for NDI of the sides of the stiffener. The five transducer arrays are supported by respective compliant assemblies which facilitate proper adjustment of the location (i.e., position and orientation) of the transducer arrays during scanning. The positions of the transducer arrays are adjusted to account for geometric variations in the stiffener.

Abstract: An inspection module for inspection of a target object is disclosed. The inspection module includes an inspection module comprising a housing, a sensor adapted to provide sensor data relating to the target object, an inspection module processor adapted to receive the sensor data from the sensor and to provide corresponding packaged data, and an inspection module interface adapted to output the packaged data from the inspection module processor.

Abstract: The invention relates to a test probe 10 for the non-destructive testing of a workpiece by means of ultrasonic sound. The test probe has an ultrasonic transducer 20 for the generation of an ultrasonic field, which is coupled acoustically to a delay line body 12, which is provided to be attached for a coupling of the ultrasonic field into the workpiece on a surface of the workpiece. Furthermore, the invention relates to a family of test probes as well as to a testing device for the non-destructive testing of a workpiece by means of ultrasonic sound, with a test probe 10, whose ultrasonic transducer 20 has a majority of independently controllable individual oscillators. Furthermore, a control unit 50 is provided, which is equipped to control the individual oscillators of the ultrasonic transducer 20 with phase accuracy in such a way, that a sound field rotationally symmetrical to the central beam is generated.

Abstract: A non-contact signal propagation property evaluation system for ropes can be deployed for a number of different applications including, but not limited to, moving lines, e.g., crane or winch and static lines, e.g., mooring lines, stays, etc., to evaluate physical properties of the ropes and, in some cases, to help evaluate structural health of the ropes. The system includes a first transducer for generating ultrasonic waves, a second transducer for receiving ultrasonic waves propagated transversely through and around the rope, and a processor executing computer readable code to determine acoustic propagation properties of the rope.

Abstract: A method for determining the purity or authenticity of a substance being transported in a container through a supply chain including providing an entry transmitter for generating a multi-frequency coded ultrasonic signal and an entry receiver for receiving said signal after it has passed through the substance and the container, generating an entry identifier of the substance in the container, recording said entry identifier at an entry point of said supply chain, transporting the substance in the container to a destination, providing an exit transmitter for generating a multi-frequency coded ultrasonic signal and an exit receiver for receiving said signal after it has passed through the substance and the container, generating an exit identifier of the substance in the container, and comparing said entry identifier and said exit identifier to determine whether the substance in the container has been altered during travel through the supply chain.

Abstract: A protection member is arranged such that the distance from an opening plane of a reception guide to the center of the protection member is half of the distance from the opening plane of the reception guide to the surface of a reception vibration member. In other words, the arrangement position of the protection member is in the center between the opening plane of the reception guide and the surface of the reception vibration member. Accordingly, even if a protection member is arranged, a transmission coefficient is obtained that is equal to a transmission coefficient in the case where no protection member is present.

Abstract: An ultrasonic sensor is provided at a bumper 31 of a vehicle 3 and used in a vehicle obstacle detector 1 that detects the presence of an obstacle within a detection area by transmitting and receiving ultrasonic waves. The ultrasonic sensor includes a piezoelectric element 21 configured to transmit and receive the ultrasonic waves by using vibrations of a piezoelectric substrate and a plate-shaped acoustic matching layer 22 on one surface 22a of which the piezoelectric element is attached. The ultrasonic sensor is inserted in a mounting hole formed through the mounting surface. Another surface 22b of the acoustic matching layer 22 opposite to the one surface 22a is inclined with respect to the one surface 22a on which the piezoelectric element is attached, and is formed to be parallel with the outer surface of the bumper 31.

Abstract: An active ultrasonic room occupancy sensor with the output amplitude of the transmitter controlled by the amplitude of power applied to the transmitter to control the zone of coverage for a sensor. An adjustable voltage regulator under control of a microcontroller applies controlled amplitude voltage to the transmitter to adjust the output amplitude of the transmitter. The adjustable amplitude transmitter allows an occupancy sensor to have its total output energy adjusted to conform to the area to be covered. Lowering the total ultrasonic energy in the monitored space lowers the sensitivity of the receiver to inappropriate activations. Lowering the input power to the transmitter also lowers the total internal system noise and provides an improved signal to noise ratio in the receiver. Alternatively, the power applied to the receiver may also be controlled by an adjustable voltage regulator under control of the microcontroller to improve receiver efficiency.

Abstract: An apparatus for measuring the strength of concrete using a surface wave velocity including an ultrasonic transmission and reception probe is provided. The apparatus is configured to include a surface wave velocity measurement device including an ultrasonic transmission probe and an ultrasonic reception probe. Further, a method of constructing the slip form of a concrete column member is provided. The method is capable of reducing the construction period by raising a concrete form rapidly and safely using a method of determining the slip-up time of the slip form based on the strength of concrete measured by the apparatus.

Abstract: A system and method for inspecting a part to be monitored that is arranged inside a mechanical member, said part to be monitored including a plane wall and a curved wall presenting an angle between them. The system comprises a probe endoscope (20) carrying a head (30), said head (30) presenting a plane face (31) that is suitable for being pressed against said plane wall, said head (30) having an ultrasound probe (35) and at least one magnet (36) flush with said plane face (31), said head (30) having a curved face (32) that is perpendicular to the plane face (31) and that matches the shape of the curved wall of the part to be monitored, the plane face (31) and the curved face (32) forming an L-shaped structure that is suitable for being held against the part to be monitored via each magnet (36), while allowing said part to be monitored to rotate relative to said head (30).

Abstract: The invention relates to a detection device (2) intended to be positioned in a conveyor (1) which comprises conveying rollers (100) arranged between two lateral uprights (10, 11) to convey goods in a conveying direction (D), the device comprising: an elongate support extending over its length along a longitudinal axis (X), said support supporting a number of detectors (40) distributed along its longitudinal axis (X) to detect the goods borne by the conveyor (1), said support being intended to be positioned between two conveying rollers (100), fixed between the two lateral uprights (10, 11) of the conveyor (1), transversally relative to the conveying direction (D).

Abstract: An ultrasonic transmitting and receiving device is provided for measuring the transmission and/or reflection of ultrasonic waves on a thin material sheet, in particular on a foil sheet. The device may include a plurality of ultrasonic transmitters, a plurality of ultrasonic receivers, wherein the number of the ultrasonic transmitters corresponds to the number of the ultrasonic receivers, and one receiver electronics respectively for each of the ultrasonic receivers or each a group receiver electronics respectively for a predetermined number of ultrasonic receivers. A method is provided for ultrasonic absorption and/or transmission measurement, in which signals are emitted by multiple ultrasonic transmitters at the same time or nearly at the same time which are received by ultrasonic receivers and in which the received signals are evaluated in parallel.

Abstract: This disclosure provides systems, methods and apparatus related to an ultrasonic sensor for detecting ultrasonic energy. In some implementations, the ultrasonic sensor includes a piezoelectric receiver layer bonded with an adhesive to an array of pixel circuits disposed on a substrate, each pixel circuit in the array including at least one thin film transistor (TFT) element and having a pixel input electrode electrically coupled to the pixel circuit. Methods of forming ultrasonic sensors include bonding piezoelectric receiver layers to TFT arrays.

Abstract: This disclosure describes embodiments of a probe device that can replace the multiple probes now required to perform inspection of hollow targets. These embodiments can generate acoustic waves as both shear waves and compression waves. Moreover, configurations of the probe devices below can direct the acoustic waves across an angular range that accommodates for the position of potential anomalies in the hollow target.

Abstract: This disclosure describes embodiments of a probe assembly and an inspection system for ultrasonic inspection. Designs for the probe assembly package components to fit into a bore of a hollow target. These designs may incorporate electronics to generate waves and to detect a wide selection of anomalies (e.g., transversal crack, longitudinal crack, and volumetric flaws) that can form in the hollow target. The probe assembly provides support structure to manipulate and operate these electronics in the bore. This support structure facilitates communication of signals, e.g., from transducer elements that operate as a phased array. The probe assembly also includes a fluid circulating system and coupling system that permits the probe device to detach and reattach to match the probe device (and other parts of the probe assembly) to the size of the bore. These systems allow for fluid and electrical signals to circulate through the probe assembly.

Abstract: A method for checking a value document of a specified value-document type has a window which has a foil region. The measurement values for an ultrasound transmission of the value document are established in a spatially resolved manner, and it is checked while employing the measurement values whether for a specified number of locations in a specified checking region the ultrasound transmission according to a specified criterion is greater than a specified minimum ultrasound transmission that is characteristic of a specified portion, lying outside the checking region, of at least one value document of the specified value-document type.

Abstract: This disclosure relates to detecting fluid in medical tubing. In certain aspects, a method is performed by a data processing apparatus. The method includes controlling repetitive activation of the ultrasonic transmitter. The method also includes receiving a signal from the ultrasonic receiver during an activation of the ultrasonic transmitter. The method also includes determining that fluid is absent or present in a portion of the medical fluid tube based on a comparison between the signal and a threshold value.

Abstract: Ultrasonic detection methods are disclosed. The method includes providing an ultrasonic detection system having a transmitting phased array device and a receiving phased array device. A phased array wave is transmitted through a revolutionary body from the transmitting phased array device to the receiving phased array device, thereby obtaining ultrasonic detection information about the revolutionary body. In another embodiment, the method includes positioning the transmitting phased array device and the receiving phased array device on a periphery of a turbine rotor, transmitting a phased array wave into the turbine rotor, the phased array wave not reflecting off of a reflecting feature, adjusting the positioning of the transmitting phased array devices on the periphery of the turbine rotor, and transmitting the phased array wave into the turbine rotor, the phased array wave reflecting off of a reflecting feature. The reflected phased array wave is received by the receiving phased array device.

Abstract: There is described a method for checking a value document of a specified type for the suspected presence of a forgery, in particular of a pieced-together forgery, wherein at least one ultrasonic property of the value document is captured in a spatially resolved manner so as to form location-dependent measuring data, wherein while employing the location-dependent measuring data it is checked whether there are present in a specified checking region of the value document two areal regions whose ultrasonic properties deviate from each other according to a specified difference criterion, and wherein there is formed an authenticity signal which represents the result of the check. Further, a corresponding checking device is described.

Abstract: The present invention relates to an ultrasound therapy system using high-intensity focused ultrasound. The present invention improves ultrasound and heat release characteristics and provides an ultrasound probe which easily performs manufacturing and maintenance processes. According to the present invention, a housing is recessed on the inward side around the upper-part edge. A plurality of mounting holes are uniformly formed from the outside at a constant radius to the edge in the center of the upper part. And a plurality of probe units are respectively installed to the plurality of mounting holes to form a sphere in the upper part of the housing wherein a first connection pin is protruded to the lower part of the housing in the lower part of a copper connection bar and a rear block, a piezoelectric wafer, and an acoustic matching layer are sequentially stacked on the upper part of the connection bar.

Abstract: In a device for detecting a basis weight of a recording material, an initial measurement is performed by using ultrasonic waves that have passed through the recording material, and the recording material is roughly classified first. By changing the number of pulses of the driving signal in accordance with a result of the initial measurement, the basis weight of the recording material can be detected by using ultrasonic waves suitable for the recording material, so that the detection accuracy of the basis weight of the recording material can be increased.

Abstract: A photoacoustic imaging apparatus includes a signal processor. The signal processor includes an adding unit configured to add received signals obtained by acoustic wave detecting devices to obtain a summed signal, a normalizing unit configured to normalize the summed signal for each acoustic wave detecting device with reference to an amplitude value in the received signal in the acoustic wave detecting device at the time when a maximum amplitude value in the summed signal is obtained to obtain a normalized signal, a reducing unit configured to subtract the normalized signal from the received signal for each acoustic wave detecting device to obtain a reduced signal in which the amplitude value in the received signal at the time when the maximum amplitude value in the summed signal is obtained is reduced, and an imaging unit configured to generate image data using the reduced signals.

Abstract: An airborne ultrasonic sensor is obtained in which a sensor body and a housing have an integrated structure, and which can reduce spurious waves which propagate through the housing to arrive at the sensor body. The sensor is provided with the sensor body that radiates ultrasonic waves into air and at the same time receives reflected waves from a reflection source which exists in the air, a transmission and reception device that drives the sensor body and at the same time obtains a distance to the reflection source or a propagation speed of sound based on the reflected waves, and the housing that has the sensor body fixedly secured thereto with an integrated structure. The housing has groove portions which are different in acoustic impedance from their surroundings. The groove portions are arranged obliquely regarding either one of a horizontal direction or a vertical direction of the sensor body.

Abstract: An array of ultrasonic transducers in a conical formation emits pulses of ultrasonic simultaneously so that an anomaly of any orientation in a test object can be detected efficiently.

Abstract: An ultrasonic probe and a method for the nondestructive testing of a test specimen are described, which are activatable individually or in groups as phased array for the emission or reception of ultrasonic plate waves in a predefinable propagation direction in the test specimen wall to be tested. At least one ultrasonic transducer segment with at least two segment parts emits an ultrasonic plate wave field into the test specimen and which are activatable jointly and simultaneously as a phased array. The at least two segment parts are arranged along a common plane so that the ultrasonic wave fields provided from or received by the at least two segments mutually overlap and each have a main propagation direction which encloses an acute angle ? in a projection of the plane.