Journal ArticleDOI
Identification of an open crack model in a beam based on force–response measurements
TLDR
In this article, a general identification algorithm has been developed to estimate crack flexibility coefficients and the crack depth based on the force-response information, which is extended to overcome practical limitations of measuring number of degrees of freedom (dofs).About:
This article is published in Computers & Structures.The article was published on 2004-01-01. It has received 51 citations till now. The article focuses on the topics: System identification & Degrees of freedom (mechanics).read more
Citations
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Journal ArticleDOI
The strain energy release approach for modeling cracks in rotors: A state of the art review
TL;DR: In this paper, the strain energy release rate (SERR) theory is applied to a rotating crack and gives good results, and different methods of crack identification are presented as well as those for multi-crack identification.
Journal ArticleDOI
Analysis of free and forced vibration of a cracked cantilever beam
TL;DR: In this article, free and forced vibration analysis of a cracked beam were performed in order to identify the crack in a cantilever beam, and the results suggest that free vibration analysis provides suitable information for the detection of single and two cracks, whereas forced vibration can detect only the single crack condition.
Journal ArticleDOI
Identification of multiple cracks in beams under bending
TL;DR: In this paper, a local compliance matrix of two degrees of freedom, bending in the horizontal and the vertical planes is used to model the rotating transverse crack in the shaft and is calculated based on the available expressions of the stress intensity factors and the associated expressions for the strain energy release rates.
Journal ArticleDOI
Multivariable wavelet finite element-based vibration model for quantitative crack identification by using particle swarm optimization
Xingwu Zhang,Xingwu Zhang,Robert X. Gao,Ruqiang Yan,Ruqiang Yan,Xuefeng Chen,Chuang Sun,Zhibo Yang +7 more
TL;DR: In this article, a methodology for quantitative crack identification is proposed based on multivariable wavelet finite element method and particle swarm optimization, which can achieve more accurate vibration analysis results because it interpolates all the solving variables at one time.
Journal ArticleDOI
Crack localisation and sizing in a beam based on the free and forced response measurements
TL;DR: In this paper, a method of the crack localisation and sizing in a beam from the free and forced response measurements is developed, which gives crack flexibility coefficients as a by-product.
References
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Book
The stress analysis of cracks handbook
TL;DR: The Stress Analysis of Cracks Handbook as mentioned in this paper provides a comprehensive, easy-to-access collection of elastic stress solutions for crack configurations, along with other relevant information, such as displacements, crack opening areas, basic stress functions source references, accuracy of solutions, and more.
Journal ArticleDOI
A summary review of vibration-based damage identification methods
TL;DR: In this paper, the authors provide an overview of methods to detect, locate, and characterize damage in structural and mechanical systems by examining changes in measured vibration response, including frequency, mode shape, and modal damping.
Book
Finite Element Model Updating in Structural Dynamics
TL;DR: A comparison of Numerical Data with Test Results and Iterative Methods Using Modal Data for Model Updating shows that the former is more accurate than the latter.
Journal ArticleDOI
Damage detection from changes in curvature mode shapes
TL;DR: In this article, a new parameter called curvature mode shape is investigated as a possible candidate for identifying and locating damage in a structure, and it is shown that the absolute changes in the curvature shape are localized in the region of damage and hence can be used to detect damage.
Journal ArticleDOI
Detection of structural damage through changes in frequency: a review
TL;DR: The use of natural frequency as a diagnostic parameter in structural assessment procedures using vibration monitoring is discussed in this paper, based on the fact that natural frequencies are sensitive indicators of structural integrity.