Temperature-dependent constant fatigue life diagram for press-formed short carbon fiber reinforced polyamide composite
| Autor: | Masamichi Kawai, S. Funaki, Noriyuki Hirano, Ichiro Taketa |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Materials science Stress ratio Mechanical Engineering Isotropy Composite number Diagram 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Fatigue limit Stress (mechanics) Mechanics of Materials 0103 physical sciences Polyamide Ceramics and Composites Composite material 0210 nano-technology Constant (mathematics) |
| Zdroj: | Advanced Composite Materials. 28:1-28 |
| ISSN: | 1568-5519 0924-3046 |
| Popis: | Fatigue strength of a short carbon fiber reinforced polyamide (SCF/PA) composite fabricated using a press forming technique is examined. Unlike an injection-molded SCF/PA composite, this one exhibits in-plane isotropy as well as through-thickness uniformity. Fatigue tests on the SCF/PA composite are carried out at different stress ratios and temperatures, respectively. The fatigue test results show that the S–N relationship for the SCF/PA composite significantly depends on stress ratio, and fatigue degradation occurs most rapidly at the critical stress ratio, regardless of test temperature. The fatigue stress for a given life decreases with temperature. The reduction in fatigue strength with temperature correlates well with the reduction in static strength with temperature. Accordingly, the effect of temperature on fatigue life for each of different constant values of stress ratio can approximately be removed by normalizing fatigue stress with respect to static strength. The full shape of constant fatigue... |
| Databáze: | OpenAIRE |
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