流体机械2016，Vol.44Issue(11)：11-14,4.DOI:10.3969/j.issn.1005-0329.2016.11.003
离心式风机含裂纹叶片的试验模态分析
Experimental Modal Analysis on Blade Crack Detection of the Centrifugal Fan
乔社宁 1李兵2
作者信息
- 1. 西安陕鼓动力股份有限公司，陕西西安 710075
- 2. 西安交通大学机械制造系统工程国家重点试验室，陕西西安 710049
- 折叠
摘要
Abstract
Aimed at crack fault features detection in centrifugal fan,an experimental rig of modal analysis and crack extraction was built under freedom constraints state of the impeller.An experimental study was carried out for both crack-free and seven cracked blades with different crack length.The results showed that natural frequency of the impeller decrease with the increase of crack depth,the deeper the crack is,the lower the impeller’s natural frequency is.This paper puts forward some further investiga-tion ideas to identify blade crack.关键词
叶片裂纹/固有频率/试验/模态分析Key words
blade crack/natural frequency/experimental/modal analysis分类
机械制造引用本文复制引用
乔社宁,李兵..离心式风机含裂纹叶片的试验模态分析[J].流体机械,2016,44(11):11-14,4.
