Effect of loading path on fatigue degradation and stress-strain response of glass fabric composites under tension/torsion biaxial cyclic loading
- Suzuka Coll., Mie (Japan). Dept. of Mechanical Engineering
- Doshisha Univ., Kyo-Tanabe, Kyoto (Japan). Dept. of Mechanical Engineering
It has been well recognized that the fatigue failure characteristics of fiber reinforced composites under tension/torsion biaxial loading are different from those under uniaxial loading. In many cases, biaxial loads are proportionally applied to specimens and their loading path is shown as a straight line on the normal and shear stresses map. However, innumerable loading paths exist which give the same final stress state under non-proportional biaxial loading. It was revealed in the previous research of the authors that the difference in loading mode and sequence of shear stress under tension/torsion biaxial loading apparently affects the fatigue characteristics such as stress-strain relation and fatigue life. Therefore, it is also anticipated that the fatigue failure characteristics of fiber reinforced composites are strongly influenced not only by loading mode and sequence but also by loading path under multi-axial loading. However, there are few studies on the effect of loading path on the fatigue characteristics including stress-strain response and microscopic internal damage accumulation for fiber reinforced composites. The objective of the present work is to show the effect of loading path on the fatigue of a plain-woven glass fabric polymer composite under tension/torsion biaxial loading. Three different loading paths are applied to the material including proportional loading.
- OSTI ID:
- 357778
- Report Number(s):
- CONF-980213--
- Country of Publication:
- United States
- Language:
- English
Similar Records
Fatigue degradation and life prediction of glass fabric polymer composites under tension/torsion biaxial loadings
Effect of loading path on stress-strain relation and progressive damage of a polymer matrix composite under tension/torsion biaxial loading