A device for examining the interior of a pipe using multi-element ultrasound technology, finding application in the detection of defects in the wall of a tubular pipe or the verification of the characteristics of the wall of a tubular pipe is disclosed. The device is designed to be placed inside a fluid transport pipe and to move under the action of the transported fluid, to detect defects in, or check characteristics of, the wall of the pipe. The device has a circumference and comprises a plurality of ultrasonic sensors distributed over its circumference and each formed by a plurality of transmitters and a plurality of reception antennas. The device also includes an electronic controller configured to control each sensor and to receive and record the information measured by the sensors.

An ultrasonic transverse wave is transmitted or ultrasonic longitudinal wave and transverse wave are transmitted in a perpendicular direction to a bonding interface between materials by transmission such as a probe. A reflection signal of the transmitted transverse wave reflected by the bonding interface and/or a transmission signal of the transmitted transverse wave transmitted through the bonding interface and the longitudinal wave, a reflection signal of the transmitted longitudinal wave reflected by the bonding interface and/or a transmission signal of the transmitted longitudinal wave transmitted through the bonding interface are received by reception such as the probe. A physical quantity of the reflection signal or the transmission signal of the transverse wave, out of the received signals, and the longitudinal wave, a joined state of the bonding interface is evaluated by analysis evaluation, utilizing a predetermined physical quantity of the reflection signal or the transmission signal of the longitudinal wave.

To provide a method for evaluating a corroded part, the method making it possible to specify only a waveform reflected by a corroded part and to evaluate the waveform. When a transmission unit (2) is moved on the surface of a metal pipe (60) and the distance between a corroded part (5) and the transmission unit (2) is changed, only a waveform portion A of ultrasonic waves reflected by the corroded part (5) moves toward the left or right along an X axis, and only the intensity of a noise waveform portion B included in a received wave changes upward or downward along a Y axis, which makes it possible to separate the waveform portion A and the noise waveform portion B of a longitudinal-wave surface wave reflected by the corroded part (5) and evaluate the waveform portion A in detail.

Various embodiments include methods for creating an analysis data set for an evaluation of an ultrasonic test of an object comprising: providing a first and second measurement data set, each based on an ultrasonic measurement of a region of the object and a SAFT analysis thereof; associating a first equivalent defect size with a volume element of the first measurement data set associated with at least a portion of the region; associating a second equivalent defect size with a volume element of the second measurement data set associated with at least the portion of the region; creating the analysis data set having at least one volume element which is associated with at least the portion of the region; and associating a third equivalent defect size with the volume element of the analysis data set, wherein the third is formed from the maximum of the first and second sizes.

Various embodiments include a method for ultrasonic testing using a selection of probes. In some embodiments, the method includes: ascertaining a set of shortest required respective latencies between two successive pulses for all possible firing sequences; calculating an optimized firing sequence of the shortest possible test cycle of the probes; and controlling the probes based on the optimized firing sequence to conduct an ultrasonic test.

An acoustic microscope system is described that includes a container for holding a medium with an object to be measured. Compressional waves are generated by a probe into the medium. The compressional waves travel along an acoustic axis to interact with the object. Shear waves are generated by a shear wave source into the medium. The shear waves travel along a secondary axis which intersects with the acoustic axis at the object with a non-zero angle. The shear waves are configured to cause shear wave oscillations directed transverse to the secondary axis and at least partially directed along the acoustic axis. A measurement of the object is determined based on the compressional waves having interacted with the object as a function of the generation of the shear waves.

An experimental device for studying the propagation characteristics of stress wave in jointed rock mass at high temperatures. The device includes a launch system, a loading system, a measuring system and a heating device. The heating device can be heated in sections to meet complicated test requirements. The measuring system includes two sets of measuring devices to ensure test accuracy. One measuring device uses a strain gauge to measure the local displacement of rock, thus obtaining the change of wave velocity; this method can be used when sample temperature is low. The other device adopts digital image processing technology. The experimental device can control the initial wave form and initial wave velocity, which can better meet the test requirements. The position of the sample can be fine-tuned to avoid the impact of errors left by rock processing on the test results.

An improved ultrasonic waveguide for an ultrasonic thermometry system is provided. The waveguide includes a series of sensing zones, each of which is tuned to a specific narrow frequency band. The waveguide is acoustically coupled to a transducer, which launches a longitudinal elastic wave of desired waveform and frequency. The wave propagates down the waveguide, and is reflected from the sensing zone that is tuned to that frequency. Each sensing zone is designed to be highly reflective to a narrow frequency band while being transparent to other frequencies.

The present disclosure related to an experimental device for studying the propagation characteristics of stress wave in jointed rock mass at high temperature. It comprises a launch system, a loading system, a measuring system and a heating device. The heating device can be heated in sections to meet complicated test requirements. The measuring system includes two sets of measuring systems, one measuring device uses a strain gauge to measure the local displacement of rock, thus obtaining the change of wave velocity, this method can be used when sample temperature is low. The other device adopts digital image processing technology. The invention is easy to operate and can control the initial wave form and initial wave velocity, which can better meet the test requirements. The position of sample can be fine-tuned to avoid impact of errors left by rock processing on test results. The heating device can be heated in sections to meet complicated test requirements. Two sets of measuring system are adopted to ensure the test accuracy.

An environmental condition may be measured with a sensor (10) including a wire (20) having an ultrasonic signal transmission characteristic that varies in response to the environmental condition by sensing ultrasonic energy propagated through the wire using multiple types of propagation, and separating an effect of temperature on the wire from an effect of strain on the wire using the sensed ultrasonic energy propagated through the wire using the multiple types of propagation. A positive feedback loop may be used to excite the wire such that strain in the wire is based upon a sensed resonant frequency, while a square wave with a controlled duty cycle may be used to excite the wire at multiple excitation frequencies. A phase matched cone (200, 210) may be used to couple ultrasonic energy between a waveguide wire (202, 212) and a transducer (204, 214).