A method of experimentally determining the dynamic load-deflection behavior of elastomeric impact absorbers is developed. Particular attention was given to impact absorbers (bumpers) used in pneumatic fastening tools, and the dynamic load-deflection apparatus developed here closely replicated actual service conditions. Cylindrical specimens and actual bumpers were fabricated from epichlorohydrin and nitrile elastomers, two materials commonly used in the bumper application. The dynamic behavior of thin circular disks is also studied and brief comparison with the Split Hopkinson Pressure Bar technique is given.
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