Fatigue behavior and life prediction of biodegradable composites of starch reinforced with date palm fibers. (October 2017)

• Record Type: Journal Article
• Authors: Saleh, Menna A.; Al Haron, Mohamed H.; Saleh, Aya A.; Farag, Mahmoud
• Is Part Of: International journal of fatigue. Volume 103(2017)
• Page Start: 216
• Page End: 222
• Publication Date: 2017-10
• Subjects: Composites -- Bending strength -- Residual strength -- Fatigue -- Damage index; Materials -- Fatigue -- Periodicals; Materials -- Fatigue; Periodicals; 620.1122
• DOI: 10.1016/j.ijfatigue.2017.06.005
• Languages: English
• ISSNs: 0142-1123

Abstract

Graphical abstract: Highlights: Adding 50 wt% date palm fibers enhanced the fatigue behavior of biodegradable starch. Bending strength had the optimum for 50 wt% composites as well. Fatigue damage was investigated by SEM to study the formation and propagation of crack. Experimental residual strengths were in good agreement with mathematical value. Abstract: This work studies the fatigue behavior of biodegradable composites of thermoplastic starch (TPS) reinforced with different amounts of date palm fibers (DPF) (20, 50, and 70 wt%). Composite with 50 wt% fiber content had higher static and fatigue strengths compared to other composites. The alternating stress at which the composites lasted for 10 7 cycles was about 16% of the flexural strength. Mathematical models following the assumptions of D'Amore et al. (1996) and Mao and Mahadevan (2002) were shown to give a good agreement with experimental results of the residual strengths under various fatigue cycles and of the fatigue damage index at different levels of stresses.