Non-contact ultrasonic, enables rapid testing of structures using ultrasonic tests that are not possible via conventional contact transducers. This paper reports on laser ultrasonic and air/gas coupled ultrasonic measurements that are performed remotely, do not require direct access to test area, do not need traditional ultrasonic coupling and do not have traditional C-scan fixture requirements...

Ongoing research at the University of Leeds, being undertaken as part of the DIAMOND university consortium, is exploring the effectiveness of various ultrasonic technologies as in situ probes to characterize and monitor simulant nuclear wastes. Through use of a commercial Ultrasonic Velocity Profiler (UVP) and an Acoustic Backscatter Sensor (ABS) both with 1 – 5 MHz transducers, various propert...

A comprehensive review focusing on advantages of high-power ultrasound in extraction, emulsification, crystallization, defoaming and modification of functional properties of food proteins was conducted to understand the ultrasonic mechanisms, important process parameters and components to consider for scale-up. The effect of highpower ultrasound on the overall extractability of soy proteins, to...

Ultrasonic imaging and scanned acoustic microscopy are terms used to describe similar imaging processes at different magnifications and frequencies. Both processes form images by acquiring spatially correlated measurements of the interaction of high-frequency sound waves with materials. With the exception of the interference measurement, called V (z ), and the gigahertz frequencies used by the ...

The embedded ultrasonic structural radar (EUSR) was developed based on phased array technology. It can interrogate large structural areas from a single location using ultrasonic guided Lamb and Rayleigh waves generated by tuned piezoelectric wafer active sensors (PWAS) that are permanently attached to the structure. This paper brings together several aspects of the implementation and applicatio...

An experimental setup is designed to detect composite delamination damage based on ultrasonic infrared thermography. The ultrasonic infrared thermography system is composed by ultrasonic excitation system, infrared thermal imager and data acquisition system and two damaged composite plate specimens are produced in the experiment. The image processing methods including thresholding, filters, edg...

The University of Dayton Research Institute (UDRI), under contract by the US Air Force, has designed and constructed a fully automated ultrasonic inspection system for the detection of embedded defects in rotating gas turbine engine components. The automated inspection system, designed and developed under the Turbine Engine Sustainment Initiative (TESI), makes use of phased array ultrasonic tec...

We report a quasi-flat and sub-wavelength acoustic lens built using soft matter process for broadband ultrasonic 3D focusing in water. By simple emulsion templating method, porous material with high index relative to water (∼5) has been molded shaped into convergent very low curvature thickness smaller than the working wavelength This kind of metasurface generates narrow focused beam, its focal...