Notch Effect on Discontinuous Fiber Reinforced Thermoplastic Composites

Abstract:

Increasing utilization of thermoplastic composites in the structural application necessitates understanding of damage tolerance characteristics. In this work, unreinforced, 20 % short, 20 % long glass fiber reinforced polypropylene were injection molded and considered. Test specimens with different notch sizes were tested under static as well as fatigue loading conditions. Under static load condition, short fiber reinforced and unreinforced test material exhibited notch strengthening effect; whereas long fiber reinforced material exhibited notch weakening effect. Failure morphology under fatigue condition exhibited the influence of notch size and length of reinforced fibers over performance. Significant difference between notched and unnotched specimens is observed at low cycle fatigue and very less difference in performance is observed at high cycle fatigue condition.

• Periodical: Key Engineering Materials (Volumes 471-472)
• Pages: 173-178
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.471-472.173
• Online since: February 2011
• Authors: Amit Kumar Haldar, S. Senthilvelan
• Keywords: Damage Tolerance, Failure, Fatigue, Thermoplastic Composite

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