Location

Seattle, WA

Start Date

1-1-1996 12:00 AM

Description

Laser-based ultrasonics (LBU), i.e. the generation of ultrasound by laser illumination and the measurement of ultrasonic signals by laser interferometric techniques, has many advantages for applications to nondestructive evaluation (NDE). These include non-contact generation and detection, remote placement of equipment using fiber-optics, easy scanning, absolute displacement calibration, both broad band-and narrow band signal generation, wide frequency band measurements, and applicability to curved surfaces. Both laser generation of ultrasound and the subsequent detection of the ultrasonic waves using a laser interferometry are areas of active research [1-6].

Volume

15A

Chapter

Chapter 2: Emerging Inspection Technologies

Section

Laser Ultrasonics

Pages

645-650

DOI

10.1007/978-1-4613-0383-1_83

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

Fiberized Sagnac Interferometer for Ultrasound Measurement

Seattle, WA

Laser-based ultrasonics (LBU), i.e. the generation of ultrasound by laser illumination and the measurement of ultrasonic signals by laser interferometric techniques, has many advantages for applications to nondestructive evaluation (NDE). These include non-contact generation and detection, remote placement of equipment using fiber-optics, easy scanning, absolute displacement calibration, both broad band-and narrow band signal generation, wide frequency band measurements, and applicability to curved surfaces. Both laser generation of ultrasound and the subsequent detection of the ultrasonic waves using a laser interferometry are areas of active research [1-6].