Paper number 259
|TIME AND TEMPERATURE DEPENDENCE OF STATIC, CREEP, AND FATIGUE BEHAVIOR FOR FRP ADHESIVE JOINTS|
Yasushi Miyano1, Masayuki Nakada1, Toshiaki Yonemori1, Sangwook Sihn2,
and Stephen W. Tsai2
1Materials System Research Laboratory, Kanazawa Institute of Technology,
Yatsukaho, Matto, Ishikawa 924-0838, Japan
2Department of Aeronautics & Astronautics, Stanford University,
Stanford, California 94305-4035, U.S.A.
|Summary||We proposed a prediction method of fatigue life for polymer composite structures under an arbitrary frequency, stress ratio (minimum stress/maximum stress), and temperature from the results of constant strain-rate (CSR) test under various temperatures and loading rates, and fatigue tests at a single frequency under various temperatures. Tensile tests of GFRP/metal adhesive joints for CSR and fatigue loadings were conducted for various temperatures and loading rates. The validity of this method was proven for the tensile fatigue life for the GFRP/metal adhesive joints from these test results. Furthermore, the characteristic time-temperature dependent fatigue behavior of this FRP joints was clarified using this prediction method.
||Keywords|| GFRP, Joints, fatigue strength, life prediction, time-dependent properties.
Theme : Joints ; Bonded joints
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