Journal ArticleDOI
Crack detection in beams using changes in frequencies and amplitudes of frequency response functions
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TLDR
In this paper, two sets of aluminum beams were used for this experimental study each set consisted of seven beams, the first set had fixed ends, and the second set was simply supported Cracks were initiated at seven different locations from one end to the other end (along the length of the beam) for each set, with crack depth ratios ranging from 01 d to 07 d (d is the beam depth) in steps of 01, at each crack location.About:
This article is published in Journal of Sound and Vibration.The article was published on 2003-07-31. It has received 282 citations till now. The article focuses on the topics: Response Frequency & Frequency response.read more
Citations
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Journal ArticleDOI
Identification of multiple cracks in a beam using natural frequencies
TL;DR: In this paper, a simple method to identify multiple cracks in a beam is presented, where cracks are modeled as rotational springs and the forward problem is solved using the finite element method.
Journal ArticleDOI
A study of the vibro-acoustic modulation technique for the detection of cracks in metals
TL;DR: In this article, the sensitivity of the vibro-modulation technique is investigated systematically on a set of mild steel beams with cracks of different sizes and shapes A damage index was measured for each crack The correlation obtained between the crack size and the strength of the modulation is fairly poor.
Journal ArticleDOI
A review on the vibration analysis for a damage occurrence of a cantilever beam
TL;DR: In this paper, the effects of a crack on the cantilever steel beam with circular cross section were investigated and a finite element method (FEA) software was used in developing the model.
Journal ArticleDOI
Detection of crack location and size in structures using wavelet finite element methods
TL;DR: In this article, a wavelet finite element (WFEM) method is used to detect cracks in a free-free beam, where the frequency response functions, function of crack location and size, are approximated by means of surface-fitting techniques.
Journal ArticleDOI
The use of intelligent computational tools for damage detection and identification with an emphasis on composites – A review
Guilherme Ferreira Gomes,Yohan Alí Diaz Mendéz,Patricia da Silva Lopes Alexandrino,Sebastião Simões da Cunha,Antonio Carlos Ancelotti +4 more
TL;DR: The use of computational and intelligent techniques for structural monitoring in the form of a review with emphasis on composite materials is discussed, to help engineers and researchers find a starting point in developing a better solution to their specific structural monitoring problems.
References
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ReportDOI
Damage identification and health monitoring of structural and mechanical systems from changes in their vibration characteristics: A literature review
TL;DR: A review of the technical literature concerning the detection, location, and characterization of structural damage via techniques that examine changes in measured structural vibration response is presented in this article, where the authors categorize the methods according to required measured data and analysis technique.
Journal ArticleDOI
The location of defects in structures from measurements of natural frequencies
Peter Cawley,Robert D. Adams +1 more
TL;DR: In this article, a method of non-destructively assessing the integrity of structures using measurements of the structural natural frequencies is described, where measurements made at a single point in the structure can be used to detect, locate and quantify damage.
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One-dimensional theory of cracked Bernoulli-Euler beams
S. Christides,A.D.S. Barr +1 more
TL;DR: In this paper, the authors derived the differential equation and associated boundary conditions for a nominally uniform Bernoulli-Euler beam containing one or more pairs of symmetric cracks and achieved the reduction to one spatial dimension using integrations over the cross-section after plausible stress, strain, displacement and momentum fields are chosen.
Journal ArticleDOI
Identification of cracks in welded joints of complex structures
TL;DR: In this article, the influence of a crack in a welded joint on the dynamic behavior of a structural member is discussed and the relation between the change in natural frequency of vibration of a cantilever beam and the crack depth that appears at the built-in edge which is clamped by way of a weld is investigated.