冲头形状对层合板低能量冲击损伤尺寸及剩余压缩强度的影响

玻璃钢/复合材料 ›› 2018, Vol. 0 ›› Issue (7): 89-92.

冲头形状对层合板低能量冲击损伤尺寸及剩余压缩强度的影响

刘逸众, 李敏, 陈律

长沙航空职业技术学院,长沙 410124

收稿日期:2018-03-23 出版日期:2018-07-25 发布日期:2018-07-20
作者简介:刘逸众(1987-),女,硕士,主要从事复合材料结构修理方面的研究,15371015@qq.com。
基金资助:
湖南省教育厅科学研究项目(14C0007)

EFFECT OF PLUNGER ON DAMAGE DIMENSIONS AND RESIDUAL COMPRESSIVE STRENGTH OF LAMINATES SUBJECTED TO LOW-ENERGY IMPACT

LIU Yi-zhong, LI Min, CHEN Lv

Changsha Aeronautical Vocational and Technical College, Changsha 410124, China

Received:2018-03-23 Online:2018-07-25 Published:2018-07-20

摘要/Abstract

摘要： 为探索冲头形状对层合板低能量冲击损伤尺寸及剩余压缩强度的影响,采用不同形状的冲头对T700/DS1202层合板进行了低能量冲击试验,测量损伤尺寸及其冲击后的剩余压缩强度。结果表明:随着冲击能量等级的增加,锥形冲头造成的损伤更易向深度方向发展,当损伤深度≥0.315 mm时,层合板背部出现裂纹,造成层合板剩余压缩强度退化到90%以下;同时,冲头形状会影响冲击能量门槛值,锥形冲头与圆形冲头的冲击能量门槛值分别为5 J·mm^-1、6.67 J·mm^-1。

关键词: 层合板, 冲头, 损伤尺寸, 剩余压缩强度

Abstract: In order to investigate the effect of plunger on damage dimensions and residual compressive strength of laminates subjected to low-energy impact, the T700/DS1202 laminates were impacted by tapered and round plunger. Then, the dimensions of the damage were measured by superdepth microscope and compressive test. The results show that the damages caused by tapered plunger go deeper when the energy increase, and the damage area of round plunger is larger. When the depth of the damage ≥0.315 mm, the back on laminates will be cracked, which will result in the decreasing of the residual compressive strength to the 90% or below. Meanwhile, the threshold value of impact energy will be effected by the shape of plunger, and the threshold value of the tapered and round plunger is 5 J·mm^-1 and 6.67 J·mm^-1, respectively.

Key words: laminates, plounger, damage dimension, residual compressive strength

中图分类号:

TB332

刘逸众, 李敏, 陈律. 冲头形状对层合板低能量冲击损伤尺寸及剩余压缩强度的影响[J]. 玻璃钢/复合材料, 2018, 0(7): 89-92.

LIU Yi-zhong,LI Min,CHEN Lv. EFFECT OF PLUNGER ON DAMAGE DIMENSIONS AND RESIDUAL COMPRESSIVE STRENGTH OF LAMINATES SUBJECTED TO LOW-ENERGY IMPACT[J]. Fiber Reinforced Plastics/Composites, 2018, 0(7): 89-92.

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