Crack localization in non-rotating shafts coupled to elastic foundation using nsitivity analysis
techniques
期刊名称： Journal of Quality in Maintenance Engineeringfigure
老爸老妈浪漫史第二季勇敢英文作者： Al‐Qaisia, Ahmad, Catania, Giuppe, Meneghetti, Umberto
年份： 2003年
thursday怎么读期号： 第2期
关键词： Practical, Theoretical or Mathematical/ crack detection; dynamic
testing; eigenvalues and eigenfunctions; finite element analysis; monitoring;
double entendre
nsitivity analysis/ crack localization; nonrotating shafts; elastic foundation;
target是什么意思nsitivity analysis; damage detection; crack detection; structural components;
for one more dayvibrational characteristics; structural integrity monitoring; eigenfrequencymirage
agenda什么意思
reduction measurement; finite element method; FEM; FEA/ B0590 Materials
chopsticks
testing B0290T Finite element analysis
摘要：The problem of damage and crack detection in structural components has acquired an important role in recent years. Since the prence of cracks in a structure may alter its vibrational characteristics, the estimation of such variations can be ud to detect cracks and damage, and to monitor the integrity of structures. The u of fast, easy and inexpensive non-destructive testing is thus a major task. In this paper, nsitivity analysis by measurement of the reduction of eigenfrequencies was utilized to localize a crack in a non-rotating shaft coupled to an elastic foundation. The shaft was modeled by the finite element method and coupled to an experimentally identified foundation model. The detection of a crack with different depths and orientations was verified experimentally and a good agreement between actual and
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