Composites Science and Engineering ›› 2019, Vol. 0 ›› Issue (11): 100-104.

• APPLICATION RESEARCH • Previous Articles     Next Articles

STUDY ON THE EFFECT OF OPENING HOLE ON THE RECIPROCATING IMPACT RESISTANCE OF THERMOPLASTIC COMPOSITE LAMINATES

PENG Pi, WANG Ji-hui*, CHEN Hong-da, LUO Chuan-long   

  1. School of Material Science and Engineering, Wuhan University of Technology, Wuhan 430070, China
  • Received:2019-01-14 Online:2019-11-28 Published:2019-11-28

Abstract: In this paper, the effect of the distance between the hole and the impact point on the repeated impact resistance of the glass fiber reinforced polypropylene composite (GFRPP) laminate is studied. GFRPP laminates were prepared by hot press forming. Repeated impact on laminates were performed by drop hammer impact tester. Until it is completely penetrated, the relevant data of the impact response is obtained. The results show that the distance d between the hole and the impact point has a significant effect on the repeated impact resistance of the GFRPP laminate. For a single impact, the larger the distance is, the larger the maximum contact force of the impact response, and the smaller the displacement and the absorption energy. Compared with non-hole laminates, the number of times of d=5 mm, 10 mm, 15 mm, 20 mm perforated plates against repeated impacts decreased by 88.1%, 57.6%, 20.3%, and 3.3%, respectively. During the repeated impact process, the maximum contact force of the d=5 mm and d=10 mm aperture plates has a peak point, which promotes the absorption energy of the laminate, and the absorption energy of each impact increases slowly with the increase of the number of impacts.

Key words: composite material, holes, anti-repetitive impact

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