美国十条诫令Crack localization in non-rotating shafts coupled to elastic foundation using nsitivity analysis小剪刀图片
鲁滨逊漂流记内容
青春期孩子techniques
期刊名称： Journal of Quality in Maintenance Engineering
作者： Al‐Qaisia, Ahmad, Catania, Giuppe, Meneghetti, Umberto
年份： 2003年貂蝉铭文>牵头抓总
期号： 第2期
关键词： Practical, Theoretical or Mathematical/ crack detection; dynamic
什么是观察testing; eigenvalues and eigenfunctions; finite element analysis; monitoring;
nsitivity analysis/ crack localization; nonrotating shafts; elastic foundation;
nsitivity analysis; damage detection; crack detection; structural components;
vibrational characteristics; structural integrity monitoring; eigenfrequency
reduction measurement; finite element method; FEM; FEA/ B0590 Materials
testing B0290T Finite element analysis
烧烤调味料摘要：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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