The demand for reinforced plastics has been increasing in the U.S. over the past several years. Fibre-reinforced thermoplastics specifically have experienced a significant growth in the automotive industry, because they can often provide lower cost and weight, as well as design and manufacturing versatility compared to their metal counterparts. These materials are being used in applications such as body panels, structural components and underhood components - applications which are load bearing and often in high temperature and corrosive environments. For any material used in a load bearing application, it is necessary to understand its long-term performance under load, such as creep under predominantly sustained loads, or fatigue under predominantly cyclic loads. This understanding of long-term performance is perhaps even more important for engineering plastics because of their strong viscoelastic behaviour. The current study presents fatigue data for long glass fibre reinforced polypropylene (LGFR-PP), having an initial fibre length of 10 mm. Data was obtained under strain control at the application temperature of 120 deg C. For many years, metals have been characterized by the strain life fatigue approach. The objective of this study is to determine whether the strain control and half-life approach used for metals can be applied to a fibre-reinforced thermoplastic material.
Strain-life fatigue approach applied to glass fibre reinforced polypropylene
Dehnung-Lebensdauer-Lösungsansatz zur Materialermüdung, angewandt auf glasfaserverstärktes Polypropylen
2008
11 Seiten, 9 Bilder, 15 Quellen
Conference paper
Storage medium
English
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