Response of notched AS4/PEEK laminates to tension/compression loadingFatigue life, damage-initiation and propagation, and residual strength data are presently examined to ascertain the response of notched AS4/PEEK specimens to fully reversed tension/compression loading. Stiffness measurements made during the low-level fatigue history show that compression stiffness and tension stiffness degrade throughout the fatigue life. Damage to specimens fatigued at higher cyclic stresses developed primarily in the direction perpendicular to the loading. As in the case of specimens fatigued at lower stress levels, residual compressive stress decreased with damage development.
Document ID
19900039680
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Simonds, Robert A. (Virginia Polytechnic Inst. and State Univ. Blacksburg, VA, United States)
Stinchcomb, Wayne W. (Virginia Polytechnic Institute and State University Blacksburg, United States)