DESIGN OF A FLEXURAL-FATIGUE FIXTURE FOR UNIDIRECTIONAL FIBER-REINFORCED COMPOSITES

An attempt is made to identify the shortcomings of currently available flexural-fatigue fixtures for testing unidirectional composites, to design a new type of flexural-fatigue fixture which eliminates spurious failure modes, and to verify the concept experimentally. The four-point-bend- fatigue-fix...

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Bibliographic Details
Published in:Experimental techniques (Westport, Conn.) Conn.), 1988-10, Vol.12 (10), p.14-18
Main Author: Shih, G.C.
Format: Article
Language:English
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Summary:An attempt is made to identify the shortcomings of currently available flexural-fatigue fixtures for testing unidirectional composites, to design a new type of flexural-fatigue fixture which eliminates spurious failure modes, and to verify the concept experimentally. The four-point-bend- fatigue-fixture design is described in detail. The flexural-fatigue test was carried out on an MTS mechanical testing machine, operated in the 'stroke-control' mode. There was no sudden drop in the load degradation curve within the first several hundred cycles nor was there any microscopic evidence of shear-crack formation. (K.K.)
ISSN:0732-8818
1747-1567
DOI:10.1111/j.1747-1567.1988.tb02150.x