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Experimental investigation on distance effects in repeated low velocity impact on fiber-metal laminates

机译:低速反复冲击对金属纤维叠层的距离影响的实验研究

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摘要

Repeated low velocity impact tests were performed on Glare 5 using a drop impact tower. The effect of impact location distance on plate response, damage parameters and absorbed energy were studied. The damage evolution was evaluated using visual inspection, ultrasonic C-scan, SEM and mechanical sectioning techniques. Plastic deformation, strain hardening and perforation were observed with increasing number of impacts. The role of the metal in repeated impacts is important and becomes evident considering the distance between impact locations. Prior to the appearance of cracks, a decrease in the impact location distance results in an increase of plate stiffness. However, in presence of cracks, the decrease of impact distance results in a decrease of plate stiffness.
机译:使用跌落冲击塔对Glare 5进行了重复的低速冲击试验。研究了冲击位置距离对板响应,损伤参数和吸收能的影响。使用目测,超声C扫描,SEM和机械切片技术评估损伤的演变。随着冲击次数的增加,观察到塑性变形,应变硬化和穿孔。金属在反复撞击中的作用很重要,考虑到撞击位置之间的距离,这种作用变得明显。在出现裂纹之前,冲击位置距离的减小导致板刚度的增加。然而,在存在裂纹的情况下,冲击距离的减小导致板刚度的减小。

著录项

  • 来源
    《Composite Structures》 |2013年第5期|31-40|共10页
  • 作者单位

    Mechanical Properties Research Laboratory, Faculty of Mechanical Engineering, K.N. Toosi University of Technology, Pardis St., Molasdra Ave., Vanak Sq., Tehran, Iran,Center of Excellence for Research in Advanced Materials and Structures, Faculty of Mechanical Engineering, K.N. Toosi University of Technology, Pardis St., Molasdra Ave., Vanak Sq.,Tehran, Iran;

    Structures and Materials Laboratory, Faculty of Aerospace Engineering, Delft University of Technology, P.O. Box 5058, 2600 GB Delft, The Netherlands;

    Mechanical Properties Research Laboratory, Faculty of Mechanical Engineering, K.N. Toosi University of Technology, Pardis St., Molasdra Ave., Vanak Sq., Tehran, Iran;

    Center of Excellence for Research in Advanced Materials and Structures, Faculty of Mechanical Engineering, K.N. Toosi University of Technology, Pardis St., Molasdra Ave., Vanak Sq.,Tehran, Iran;

  • 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

    repeated low velocity impact; glare 5; delamination; C-scan; SEM;

    机译:低速反复冲击;眩光5;分层C扫描扫描电镜;

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