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Title: Method and apparatus for evaluating structural weakness in polymer matrix composites

A method and apparatus for evaluating structural weaknesses in polymer matrix composites is described. An object to be studied is illuminated with laser radiation and fluorescence emanating therefrom is collected and filtered. The fluorescence is then imaged and the image is studied to determine fluorescence intensity over the surface of the object being studied and the wavelength of maximum fluorescent intensity. Such images provide a map of the structural integrity of the part being studied and weaknesses, particularly weaknesses created by exposure of the object to heat, are readily visible in the image. 6 figs.
Inventors:
;
Issue Date:
OSTI Identifier:
170471
Assignee:
Martin Marietta Energy Systems, Inc., Oak Ridge, TN (United States) PTO; SCA: 420500; PA: EDB-96:029484; SN: 96001517572
Patent Number(s):
US 5,483,338/A/
Application Number:
PAN: 8-248,802
Contract Number:
AC05-84OR21400
Resource Relation:
Other Information: PBD: 9 Jan 1996
Research Org:
Lockheed Martin Energy Syst Inc
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES; COMPOSITE MATERIALS; NONDESTRUCTIVE TESTING; MEASURING INSTRUMENTS; DESIGN; EQUIPMENT; RELIABILITY; TEMPERATURE DEPENDENCE

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