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Impact resistance of hybrid-fiber engineered cementitious composite panels

机译：混杂纤维工程水泥基复合板的抗冲击性

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摘要

This paper investigates experimentally the impact resistance of a new hybrid-fiber Engineered Cementitious Composite (ECC) material reinforced with 1.75% polyvinyl alcohol fiber and 0.58% steel fibers. The ECC panels were subjected to impact from a small ogive-nose steel projectile, which was fired from a gas gun, travelling with an initial impact velocity ranging from 300 m/s to 657 m/s. A computer controlled high speed camera was used to record the impact process, the track of the projectile during impact, and the residual velocity of the projectile after perforation. The magnitude of the impact damage to the panels was evaluated from the measured damage parameters such as crater diameter, penetration depth and scabbing diameter after the impact testing. To evaluate the impact resistance capability of the new ECC material, the impact response of plain concrete panels, high strength concrete panels and hybrid-fiber ECC panels made of an ECC mix, which was recommended to be the most promising impact resistance material, were also tested. In addition to single impact tests, double impacts were conducted. The present study showed that the new hybrid-fiber ECC material has an excellent impact resistance to projectile penetration, evidenced by a number of capacities such as the greater absorption of the impact energy from a projectile, the higher fiber bridging capability and the better durability under multiple impacts.
机译：本文通过实验研究了一种新型混合纤维工程胶结水泥复合材料（ECC），该材料由1.75％的聚乙烯醇纤维和0.58％的钢纤维增强。 ECC面板受到小型钝齿钢弹丸的撞击，该弹丸由气枪发射，其初始撞击速度为300 m / s至657 m / s。使用计算机控制的高速相机记录冲击过程，冲击过程中弹丸的轨迹以及射孔后弹丸的残留速度。根据冲击试验后测得的损伤参数，如弹坑直径，穿透深度和划伤直径，评估对板的冲击损伤的大小。为了评估新型ECC材料的抗冲击能力，还推荐了由ECC混合料制成的普通混凝土板，高强度混凝土板和混合纤维ECC板的冲击响应，被推荐为最有前途的抗冲击材料。经过测试。除了单次冲击测试外，还进行了两次冲击。目前的研究表明，新型混合纤维ECC材料具有出色的抗弹丸穿透性，其表现为多种能力，例如弹丸对冲击能量的吸收更大，纤维桥联能力更高，在高温下具有更好的耐久性。多重影响。

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  • 来源
    《Composite Structures》 |2013年第10期|320-330|共11页
  • 作者

    Khin T. Soe; Y.X. Zhang; L.C. Zhang;

  • 作者单位

    School of Engineering and information Technology, The University of New South Wales, Australia Defence Force Academy, Canberra, ACT 2600, Australia;

    School of Engineering and information Technology, The University of New South Wales, Australia Defence Force Academy, Canberra, ACT 2600, Australia,School of Engineering and Information Technology, The University of New South Wales, Building No. 20, Canberra, ACT 2600, Australia;

    School of Mechanical and Manufacturing Engineering, The University of New South Wales, Sydney, NSW 2052, Australia;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Engineered cementitious composite (ECC); Impact; Hybrid fiber; Projectile; Panel;

    机译：工程水泥复合材料（ECC）;影响;混合纤维弹丸面板;

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