Evaluation of Fiber-Reinforced Composites Using a Non-Contact Laser/Air-Transducer System
Date
1995
Authors
Wright, W.
Hutchins, D.
Gachagan, A.
Hayward, G.
Major Professor
Advisor
Committee Member
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
Ultrasonic evaluation of materials using a non-contact system is sometimes desirable, for example when the material is moving too quickly to allow conventional fluid couplants to be used, is contained in a hostile environment, or the material itself is absorbent or toxic. In such situations, a pulsed laser is ideal for generating a variety of ultrasonic transients [1], as longitudinal, shear, surface (Rayleigh) waves and plate (Lamb) waves are generated simultaneously. Several types of non-contact detector are also available, including various optical devices [2] such as interferometers and beam deflectors. The disadvantages of an entirely laser based system are cost, and the optical quality of the test material must be reasonably high.
Series Number
Journal Issue
Is Version Of
Versions
Academic or Administrative Unit
Type
event
Comments
Rights Statement
Copyright
Sun Jan 01 00:00:00 UTC 1995