Effects of Frequency on the Mechanical Response of Two Composite Materials to Fatigue Loads

WW Stinchcomb; KL Reifsnider; LA Marcus; RS Williams

doi:10.1520/STP33168S

SYMPOSIA PAPER Published: 01 January 1975

STP33168S

Effects of Frequency on the Mechanical Response of Two Composite Materials to Fatigue Loads

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A new class of mechanical response characteristics in composite materials is reported. These characteristics were found to come about because of a nonlinear dependence of the fatigue response of biasply boron-aluminum and boron-epoxy flawed plate specimens on the frequency of load (or strain) oscillation. This nonlinear frequency effect was found to alter such properties as fatigue strength, stiffness, residual strength, and energy dissipation by as much as an order of magnitude. Several conceptual interpretations are developed and compared with data correlations.

Author Information

Stinchcomb, WW

Virginia Polytechnic Institute and State University, Blacksburg, Va.

Reifsnider, KL

Virginia Polytechnic Institute and State University, Blacksburg, Va.

Marcus, LA

Virginia Polytechnic Institute and State University, Blacksburg, Va.

Williams, RS

Virginia Polytechnic Institute and State University, Blacksburg, Va.

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Details

Developed by Committee: E08

Pages: 115–129

DOI: 10.1520/STP33168S

ISBN-EB: 978-0-8031-4652-5

ISBN-13: 978-0-8031-0346-7

Effects of Frequency on the Mechanical Response of Two Composite Materials to Fatigue Loads

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