Technical Paper
Development of Compressive Flow Strength Testing for Gasket Materials
1995-02-01
950324
It is highly desirable to have a compression test of gasket materials (which are generally composites of fibers, fillers, and binders) since (1) a gasket tension testing (ANSI/ASTM F 152) does not represent the loading direction the material is used in service (anisotropic properties) and (2) there are generally significant differences between the tensile and compressive flow stress of composite materials. It is recognized that a compression test for axis-symmetric shapes is dominated by friction when low aspect ratio samples are used. It is predicted theoretically that when the sample aspect ratio approaches the interface coefficient of friction it may be possible to observe material flow in compression. Empirical observation of this fact has been made here and elsewhere.
