A device and a method for detecting at least one defect in a test object (2). At least one test head (1) radiates an ultrasonic signal at different measuring points (MP) into the test object (2) with each point at an insonation or radiation angle (α) in order to ascertain multiple measurement data sets (MDS). The angle is constant for each data set (MDS). An analyzing unit (4) carries out an SAFT (Synthetic Aperture Focusing Technique) analysis for each ascertained measurement data set (MDS) using a common reconstruction grid (RG) inside the test object (2) in order to calculate an SAFT analysis result for each measurement data set (MDS). The analyzing unit (4) superimposes the calculated SAFT analysis results in order to calculate an orientation-independent defect display value (S.sub.RP) for each reconstruction point (RP) of the common reconstruction grid (RG).

A method for structural component crack testing comprising: a) identifying a structural component hole and inserting a probe thereinto; b) for different emission directions, automatically performing the following: b1) controlling a probe ultrasound beam emission; b2) measuring a probe signal; b3) if the measured signal amplitude is above a predetermined threshold: determining a distance between the probe and a structural component discontinuity point; recording a data set comprising at least the distance between the probe and the discontinuity point, together with a data element corresponding to the probe emission angular direction, c) automatically searching for data sets corresponding to characteristic discontinuity points, and consequently establishing a correspondence between the probe emission angular directions and an angular reference frame linked to the component; d) based on the recorded data sets, automatically determining the discontinuity point positions; e) determining a dimensional characteristic of a crack based on the discontinuity point positions.

Disclosed is an ultrasonic inspection probe assembly comprising a water wedge and a flexible probe array assembly having a flexible acoustic module. The wedge is machined to match a test surface to be inspected and is configured to shape the acoustic module so that the active surface of the acoustic module is parallel to the test surface. Different wedges may be machined to match different test surfaces, but the same flexible probe array assembly may be used for all such surfaces.

A multimode ultrasonic probe tip and transducer integrated into a micro tool, such as a nano indenter or a nano indenter interfaced with a Scanning Probe Microscope (SPM) is described. The tip component may be utilized to determine mechanical properties or characteristics of a sample, including for example, complex elastic modulus, hardness, friction coefficient, and strain and stress at nanometer scales and high frequencies. The tip component is configured to operate at multi-resonant frequencies providing sub-nanometer vertical resolution. The tip component may be quasi-statistically calibrated and contact mechanics constitutive equations may be utilized to derive mechanical properties of a sample. Contact mechanical impedance and acoustic impedance may also be compared.

Disclosed is an inspection probe of an inspection system that includes an ultrasonic probe that is freely movable on a test object and irradiates the test object with an ultrasonic wave to detect a reflected wave, and a calculation unit that executes arithmetic processing according to a detection result according to the ultrasonic probe to acquire a flaw detection result of the test object. The inspection probe includes a chassis that is freely movable on a sheet material where a two-dimensional pattern disposed on the test object and indicating a position on the test object is drawn. The ultrasonic probe is fixed to the chassis so that an incident point of an ultrasonic wave that is incident onto an opposing surface of the test object from the ultrasonic probe is within an angle of view of the reader which reads the two-dimensional pattern.

A cover unit includes: a body to which an ultrasound generator adapted to generate ultrasound is coupled; first slits disposed at a lower portion of the body in the form of multiple rings having different radii and spaced apart from each other, the first slits having a first width; second slits depressed from an upper surface of the body to communicate with the first slits and having a second width smaller than the first width; third slits depressed from the upper surface of the body and each disposed between adjacent second slits, the third slits having a third width smaller than the first width; a bottom formed under the first slits; a first sidewall formed between adjacent first slits; and a second sidewall formed between the second slit and the third slit.

A multi-material inspection system and velocity measurement method of critically refracted longitudinal wave based on single-angle wedges belong to the field of nondestructive testing of high-end equipment. The method includes the following steps: designing a transmitting wedge and a receiving wedge with the same inclination angle, and building phased array ultrasonic-based inspection systems of critically refracted longitudinal wave; estimating a longitudinal wave velocity range of a material to be tested, calculating and optimizing a phased array ultrasonic delay law, and building a relation between a longitudinal wave velocity and an amplitude of critically refracted longitudinal wave; reading and interpolating the arrival time of a received signal, and calculating a longitudinal wave velocity of the material to be tested; determining an optimal delay law, and exciting and receiving a critically refracted longitudinal wave.

An ultrasonic monitoring probe for internal service stress of a marine structural component. The probe includes a detection wedge provided with two symmetrically arranged inclined surfaces at its top, two connecting channels vertical to the two inclined surfaces and penetrating through the detection wedge and provided with threaded holes close to the inclined surfaces and water storage cavities far away from the inclined surfaces, two ultrasonic transducers mounted in the threaded holes of the two connecting channels and configured for generating and receiving ultrasonic waves; two bottom rings located at a bottom of the detection wedge and arranged relative to the water storage cavities and configured for attachment to a surface of a detected component, a magnet disposed in a magnet placement hole arranged at a central position between the two connecting passages, and a monitoring device electrically connected with the two ultrasonic transducers.

An ultrasonic measurement apparatus (1) estimates a property/state of a test object (100) that allows an injected ultrasonic wave to propagate as plate waves (UW) of propagation modes. The ultrasonic measurement apparatus (1) includes: a receiver (30) configured to receive a detected signal obtained by detecting the plate waves (UW) propagating through the test object (100) to output a received signal indicating a time-domain waveform of the detected signal; an intensity detector (12) configured to detect the signal intensity of a waveform part corresponding to a first propagation mode, and the signal intensity of a waveform part corresponding to a second propagation mode; and an estimator (13) configured to make a comparison between the signal intensities to estimate a property/state of the test object (100) on the basis of a result of the comparison.

A variable angle transducer interface block apparatus and related systems and methods are disclosed. The variable angle transducer interface block apparatus has an interface block having a mounting receiver. The interface block is positioned proximate to a material wall. A curved mounting structure is movably connected to the mounting receiver. A transducer is mounted on the curved mounting structure, wherein an angle of an acoustic signal transmitted by the transducer into the material wall is adjustable by movement of the curved mounting structure relative to the mounting receiver.