Fatigue behaviour and modelling of talc-filled and short glass fibre reinforced thermoplastics, including temperature and mean stress effects
Abstract
Effects of temperature and mean stress on fatigue behaviour of talc-filled polypropylene (PP-T) and short glass fibre reinforced polypropylene (PP-G), polyamide-66 (PA66), and a blend of polyphenylene ether and polystyrene (PPE/PS) were investigated. Load-controlled fatigue tests were conducted under positive stress ratios (R = 0.1 and 0.3) and at several temperatures (T = 23, 85 and 120 °C). Larson–Miller parameter was used and a shift factor of Arrhenius type was developed to correlate fatigue data at various temperatures. Effect of mean stress on fatigue life was significant for some of the studied materials; however, for the PPE/PS blend no effect of mean stress was observed. Modified Goodman and Walker mean stress equations were evaluated for their ability to correlate mean stress data. A general fatigue life prediction model was also used to account for the effects of mean stress, temperature, anisotropy and frequency.
Publication Title
Fatigue and Fracture of Engineering Materials and Structures
Recommended Citation
Eftekhari, M., & Fatemi, A. (2017). Fatigue behaviour and modelling of talc-filled and short glass fibre reinforced thermoplastics, including temperature and mean stress effects. Fatigue and Fracture of Engineering Materials and Structures, 40 (3), 333-348. https://doi.org/10.1111/ffe.12497
