Quantity Effect of Radial Cracks on the Cracking Propagation Behavior and the Crack Morphology

被引：12

作者：

Chen, Jingjing ^{[1
]}

Xu, Jun ^{[1
]}

Liu, Bohan ^{[1
]}

Yao, Xuefeng ^{[2
]}

Li, Yibing ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Automot Engn, State Key Lab Automot Safety & Energy, Beijing 100084, Peoples R China

[2] Tsinghua Univ, Sch Aerosp, Beijing 100084, Peoples R China

来源：

PLOS ONE | 2014年 / 9卷 / 07期

基金：

中国国家自然科学基金;

关键词：

DYNAMIC CRACK; WINDSHIELD CRACKING; PEDESTRIAN HEAD; RESISTANCE; FRACTURE; SUBJECT;

D O I：

10.1371/journal.pone.0098196

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

In this letter, the quantity effect of radial cracks on the cracking propagation behavior as well as the circular crack generation on the impacted glass plate within the sandwiched glass sheets are experimentally investigated via high-speed photography system. Results show that the radial crack velocity on the backing glass layer decreases with the crack number under the same impact conditions during large quantities of repeated experiments. Thus, the "energy conversion factor'' is suggested to elucidate the physical relation between the cracking number and the crack propagation speed. Besides, the number of radial crack also takes the determinative effect in the crack morphology of the impacted glass plate. This study may shed lights on understanding the cracking and propagation mechanism in laminated glass structures and provide useful tool to explore the impact information on the cracking debris.

引用

页数：7

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