理化检验-物理分册2017，Vol.53Issue(1)：42-45,4.DOI:10.11973/lhjy-wl201701010
往复耐久试验中办公椅构件断裂失效分析
Analysis on Fracture Failure of Office Chair Components in Reciprocating Durability Test
陈叶青 1吴欢 2茅晔辉 2吴益文1
作者信息
- 1. 上海大学 材料科学与工程学院，上海 200072
- 2. 上海出入境检验检疫局，上海 200135
- 折叠
摘要
Abstract
During the reciprocating durability test of a batch of the office chairs,the chair backs fractured to failure.By means of fracture analysis, chemical composition analysis, hardness testing, inclusion inspection, metallographic inspection,scanning electron microscope (SEM)and energy spectrum (EDS)analysis,the reasons why internal springs of office chair backs fractured in reciprocating durability test were analyzed.The results show that:the hardness distribution of the spring surface was uneven,and there were surface decarburization on surface and the inclusions in subsurface;these defects destroyed the continuity of the matrix,leading to the crack source during reciprocating durability test;the cracks propagated rapidly under the multiple stress condition,and finally fatigue fracture occurred to the springs.关键词
办公椅/弹簧/疲劳断裂/夹杂物/带状组织Key words
office chair/spring/fatigue fracture/inclusion/banded structure分类
矿业与冶金引用本文复制引用
陈叶青,吴欢,茅晔辉,吴益文..往复耐久试验中办公椅构件断裂失效分析[J].理化检验-物理分册,2017,53(1):42-45,4.
