Laser ultrasonics

Laser - ultrasonics uses lasers to generate and detect ultrasonic waves. The obvious advantage of using laser ultrasound is that it can be totally remote over relatively large distances. TWI has been developing laser - ultrasonic testing techniques for many years and is now able to provide services harnessing this relatively nascent technology to members.

Laser ultrasonic testing (LUT) combines the sensitivity of ultrasonic inspection with the flexibility of optical systems to deal with complex inspection challenges. It has advantages for testing metals, composite materials, ceramics, and liquids.

It can remotely and rapidly inspect curved surfaces on fixed or moving parts.

Depending on the power density, ultrasonic waves are generated by ablation or by thermoelastic expansion.

The type of wave generation influences the propagation direction and energy of the ultrasonic . The symposium is dedicated to the latest scientific , methodological and technological advancements, and applications of Laser Ultrasound. The next logical step in the course of the assessment of laser - ultrasonics for the non- destructive inspection of composite aircraft structures was to inspect the composite structure of an intact aircraft. On-site tests were conducted at Bombardier Inc.

Canadair (Defense. System Division) at the Montreal International Airport in . A non-contact laser ultrasound measuring system for material properties of high- strength steels was developed. For this purpose, a light equalizing device is applied to the . In this paper we present two possible applications of in situ laser ultrasonics : one is the detection of voids in tendon duct with the impact echo metho the other is the use of surface waves to recover mechanical properties of the first centimetres of concrete structures (here after called cover concrete). The coming venue will be at Swerea KIMAB in Stockholm, Sweden This event will open to all . Non-contact laser - ultrasonics characterization. After over years, Rotoweld is still the only truly automated pipe spool welding . Among various nonlinear ultrasonic techniques, the proposed laser nonlinear wave modulation . The Optech line of laser ultrasonic inspection products includes receiver systems and full inspection systems.

The core technology in these systems is the Optech adaptive laser ultrasonic receiver. We offer several receiver options so as to meet the broadest range of customer requirements. This practical book focuses mainly on the possible applications of the . Laser -Based Ultrasonics : Applications at APL.

Baldwin onventional ultrasonic techniques have long been recognized for their usefulness in the nondestructive testing of materials and structures. These techniques, based on launch- ing ultrasonic or high-frequency acoustic waves into a . When conventional ultrasound cannot do the job, when remote inspection of moving parts is neede laser ultrasound may be the solution. At the core of laser ultrasound system is the laser ultrasonic receiver. For many years, a primary target for LUT has been aircraft and structural composites.

Discover the possibilities of flexible laser - ultrasonics from detection in lab settings to inspection in industrial on-line use. Laser Doppler Vibrometer is used to experimentally validate the numerical of the wave .