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In situ ply strengths - An initial assessmentThe in situ ply strengths in several composites were calculated using a computational procedure developed for this purpose. Laminate fracture data for appropriate low modulus and high modulus fiber composites were used in the laminate analysis in conjunction with the method of least squares. The laminate fracture data were obtained from tests on Modmor-I graphite/epoxy, AS-graphite/epoxy, boron/epoxy and E-glass/epoxy. The results obtained show that the calculated in situ ply strengths can be considerably different from those measured in unidirectional composites, especially the transverse strengths and those in angleplied laminates with transply cracks.
Document ID
19780049314
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Chamis, C. C. (NASA Lewis Research Center Cleveland, OH, United States)
Sullivan, T. L. (NASA Lewis Research Center Cleveland, Ohio, United States)
Date Acquired
August 9, 2013
Publication Date
March 1, 1978
Subject Category
Composite Materials
Meeting Information
Meeting: Conference on Composite Materials: Testing and Design
Location: New Orleans, LA
Start Date: March 20, 1978
End Date: March 23, 1978
Sponsors: American Society for Testing and Materials
Accession Number
78A33223
Distribution Limits
Public
Copyright
Other

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