A system and method of ultrasonically inspecting coiled wire includes a wire drawer, a first power feeder, an ultrasonic inspection device, and a re-coiler. The wire drawer receives wire that is unspooled from a first coil of wire that has not been internally inspected for defects. The wire is then fed through the first power feeder, which straightens the wire. The straightened wire is then fed through the ultrasonic inspection device to detect internal defects of the wire. The inspected wire is then re-coiled into a second coil of wire that has been ultrasonically inspected for internal defects. Accordingly, raw and uninspected wire coils can be continuously conditioned and inspected and then re-coiled, and may be certified for use in specific manufacturing processes, without having to inspect individual cut and separated sections of wire.

According to an exemplary embodiment in the present disclosure, a crack measurement device and a crack measurement method are provided. The crack measurement device according to an exemplary embodiment in the present disclosure includes: an ultrasonic sensor irradiating a first ultrasonic wave in a direction perpendicular to a bottom surface of an object to be inspected, so as to be focused on the bottom surface of the object to be inspected and receiving a reflected wave, reflected from the bottom surface of the object to be inspected; and a monitoring unit providing information on a crack on the basis of intensity of the reflected wave.

An opto-acoustic metrology device is configured to measure or inspect structures in a sample using both vertical and lateral transient perturbations. Multiple probe beams that have different locations of incidence may detect both the vertical and lateral transient perturbations produced by a pump beam, or a single probe beam may detect both the vertical and lateral transient perturbations produced by multiple pump beams that have different locations of incidence. The multiple probe beams or multiple pump beams are modulated with orthogonal waveforms, which allow the measurement of the different locations without interference from one another. The received signals are demodulated based on the orthogonal waveforms to recover the contributions to the received signals associated with each of the multiple probe beams or each of the multiple pump beams.

One aspect of a process of inspecting a joint that connects two parts includes directing an ultrasonic beam from an ultrasonic beam transmitter at a joint that connects two parts, the ultrasonic beam forming an angle between at least 14 degrees and at most 21 degrees with a joint axis of the joint, wherein the ultrasonic beam passes through a joint thickness of the joint. The process also includes determining a quality of the joint based, in part, on a difference between a strength of the ultrasonic beam directed at the joint and a strength of a portion of the ultrasonic beam that passed through the joint thickness.