3-D localization of flaws in structural ceramics by use of scanning laser acoustic microscopy

Conference · Tue Aug 01 00:00:00 EDT 1989 · Ceramic Engineering and Science Proceedings; (USA)

OSTI ID:6978276

Wey, A C; Kessler, L W

Scanning laser acoustic microscopy (SLAM), which operates in a transmission mode, accomplishes not merely the real-time nondestructive inspection of samples but high-resolution, two-dimensional shadowgraphic imaging of the detailed structure of small objects. Due to diffraction, however, image ambiguities can arise; a digital image-processing technique has accordingly been developed which uses acoustical holography principles in conjunction with wave-field propagation calculations to yield three-dimensional SLAM. Attention is given to the modifications required so that conventional SLAM acquires the amplitude and phase data needed for image reconstruction. 7 refs.

• OSTI ID: 6978276
• Report Number(s): CONF-890130-; CODEN: CESPD
• Journal Information: Ceramic Engineering and Science Proceedings; (USA), Vol. 10; Conference: 13. annual conference on composites and advanced ceramics, Cocoa Beach, FL (USA), 15-18 Jan 1989; ISSN 0196-6219
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
42 ENGINEERING
CERAMICS
NONDESTRUCTIVE TESTING
SCANNING LIGHT MICROSCOPY
HOLOGRAPHY
IMAGE PROCESSING
LASERS
MICROSCOPES
PHOTOGRAPHY
ULTRASONIC TESTING
USES
ACOUSTIC TESTING
MATERIALS TESTING
MICROSCOPY
PROCESSING
TESTING
360200* - Ceramics
Cermets
& Refractories
420500 - Engineering- Materials Testing