Mechanical testing of selected engineering plastics

Tensile stress-strain curves and tensile creep curves were generated for a number of candidate engineering plastics. Creep testing was performed with a sustained stress of 5000 psi. Both unfilled and filled (fiber-reinforced) plastics were investigated. Nominal fill levels were 30% and 60% of either chopped carbon or glass fibers. 1 fig., 2 tabs.