Liquid crystals thermography is an effective technique for detecting flaws in fiberglass composites. A complete nondestructive evaluation system must combine a flaw detection technique with geometric and structural characterization of a detected flaw. Here, a liquid crystals kit capable of providing quantitative assessments of the structural integrity of fiberglas boats is developed. TeEnsile tests, four-point bending tests, and surface pressure tests are performed on specimens of SMC-R50 containing a wide variety of machined flaws. SMC-R50 is a sheet-molded fiberglass composite similar in constituents and mechanical properties to materials used in fiberglass boat construction. For the types of flaws considered, it is found that the tensile strength of a flawed specimen depends only on the reduction of cross-sectional area caused by the flaw.
A liquid crystals kit for structural integrity assessment of fiberglass watercraft
Eine Fluessigkristall-Ausruestung fuer die Abschaetzung der strukturellen Ganzheit von Wasserfahrzeugen aus Glasfaser
Materials Evaluation ; 41 , 2 ; 202-210
1983
9 Seiten, 14 Bilder, 2 Tabellen, 20 Quellen
Aufsatz (Zeitschrift)
Englisch
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