Phased-array technology is being more and more adopted in the field of ultrasonic non destructive testing because of its enhanced flexibility over conventional monolithic probes. The most common abilities of steering, focusing and electronic scanning have been largely described; they allow faster inspection times or inspection of components with limited accessibility. Although these techniques ...

Ultrasonic testing systems have been extensively used in medical imaging and non-destructive testing applications. Generally, these systems aim at a particular application or target material. To make these systems portable and more adaptable to the test environments, this study presents a reconfigurable ultrasonic testing system (RUTS), which possesses dynamic reconfiguration capabilities. RUTS...

A 1 × 16 capacitive micro-machined ultrasonic transducer linear array was designed, fabricated, and tested for underwater imaging in the low frequency range. The linear array was fabricated using Si-SOI bonding techniques. Underwater transmission performance was tested in a water tank, and the array has a resonant frequency of 700 kHz, with pressure amplitude 182 dB (μPa·m/V) at 1 m. The -3 dB ...

Non-destructive testing of the root area of a low-pressure (LP) turbine's blades and disks was performed in a restrictive manner. When the turbine blades and disks were disassembled or not, the root area surface was examined by conventional ultrasonic testing (UT), that is, magnetic particle or liquid penetrant testing. Recent developments have led to the use of phased array ultrasonic testing ...

An Actuated Synthetic-Aperture Array (ASA) system is described that is capable of overcoming the technical difficulties in manufacturing an ultrasonic phased array in the 30 to 70 Mhz frequency range. The system is capable of generating images using a linear array of transducers which are of equal quality compared to a 64element phased array while. The array was rapidly and precisely positioned...

Phased array can interrogate large structural areas from a single location using ultrasonic guided waves generated by tuned piezoelectric wafer active sensors that are permanently attached (embedded) to the structure. Various array parameters determine the array beamforming and steering characteristics. This paper aims to bring up several one or two dimension array designs and research on their...

Optical-resolution photoacoustic microscopy (OR-PAM) is an emerging technique that directly images optical absorption in tissue at high spatial resolution. To date, the majority of OR-PAM systems are based on single-focused optical excitation and ultrasonic detection, limiting the wide-field imaging speed. While 1D multifocal OR-PAM (1D-MFOR-PAM) has been developed, the potential of microlens a...

Pb(In1/2Nb1/2)O3–Pb(Mg1/3Nb2/3)O3–PbTiO3 (PIN–PMN–PT) piezoelectric single-crystal rectangular beams with the PIN:PMN:PT ratio of 0.33:0.35:0.32 are prepared, and their mode-coupling effect is investigated both theoretically and experimentally for ultrasonic array transducer applications. The PIN–PMN–PT rectangular beams become a tall-narrow beam and a short-wide plate, and so exhibiting an unc...

Continuum Probe Designer by Acoustic Ideas Inc. is a tool that can help design the “best” phased array ultrasonic transducer for a given inspection task. Given a specific surface geometry for the ultrasonic transducer, one component of Continuum Probe Designer can determine the number of elements, and the required size and shape of each element to meet a list of ultrasonic inspection goals. Usi...