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A Comparison of Tension and Compression Creep in a Polymeric Composite and the Effects of Physical Aging on Creep BehaviorExperimental and analytical methods were used to investigate the similarities and differences of the effects of physical aging on creep compliance of IM7/K3B composite loaded in tension and compression. Two matrix dominated loading modes, shear and transverse, were investigated for two load cases, tension and compression. The tests, run over a range of sub-glass transition temperatures, provided material constants, material master curves and aging related parameters. Comparing results from the short-term data indicated that although trends in the data with respect to aging time and aging temperature are similar, differences exist due to load direction and mode. The analytical model used for predicting long-term behavior using short-term data as input worked equally as well for the tension or compression loaded cases. Comparison of the loading modes indicated that the predictive model provided more accurate long term predictions for the shear mode as compared to the transverse mode. Parametric studies showed the usefulness of the predictive model as a tool for investigating long-term performance and compliance acceleration due to temperature.
Document ID
19960045294
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Authors
Gates, Thomas S. (NASA Hampton, VA United States)
Veazie, David R. (Clark-Atlanta Univ. GA United States)
Brinson, L. Catherine (Northwestern Univ. Evanston, IL United States)
Date Acquired
September 6, 2013
Publication Date
August 1, 1996
Subject Category
Composite Materials
Report/Patent Number
NASA-TM-110273
NAS 1.15: 110273
Accession Number
96N32261
Funding Number(s)
PROJECT: RTOP 505-63-50-18
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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