Fracture Failure Analysis on Main Wheel Hole of Escalator Step

4th International Conference on Applied Materials and Manufacturing Technology

材料科学;机械制造

Ren, Facai^1 ; Song, Yu^1 ; Liang, Xiao^1

Shanghai Institute of Special Equipment Inspection and Technical Research, Shanghai

200062, China^1

关键词: Chemical composition analysis;    Fracture failure;    Fracture mode;    Porosity defects;    Support rod;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/423/1/012053/pdf
DOI  :  10.1088/1757-899X/423/1/012053

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The escalator steps used in a building fractured during applications. The cause for escalator step fracture has been investigated systemically. The supporting rod main wheel hole of escalator step was studied by means of chemical composition analysis, scanning electron microscope and optical microscope.The results indicate that there are some porosity defects in the support rod of escalator step.The fracture mode of main wheel hole is overload brittle fracture.