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Crack detection in geometrically segmented beams

DSpace at IIT Bombay

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Field Value
 
Title Crack detection in geometrically segmented beams
 
Creator CHAUDHARI, TD
MAITI, SK
 
Subject natural frequencies
transverse vibration
cantilever beam
location
vibration based detection of crack
finite element analysis
vibration modelling of cracked beam
edge crack
ndt of crack
segmented beam
 
Description In this paper a method for modelling of transverse vibration of a geometrically segmented slender beam of practical importance with and without a crack normal to its axis has been proposed using the Frobenius technique. Two beam configurations have been considered. One configuration deals with three segment beam; the two end segments are of uniform depth of different dimensions and the middle segment is of linearly variable depth. The other is a two segment beam; one segment is uniform and the other has a one edge taper. The thickness is uniform along the whole length. In the presence of a crack, the crack section is represented by a rotational spring. Thereby it is possible to solve both the forward and inverse problems, The results have been compared with the analytical solutions available in the literature wherever possible. A number of numerical examples are presented to demonstrate the accuracy of the method. In the inverse problem, for the first configuration, 3.0% error is observed in the detection of crack location and the maximum error is 20% in size prediction. In the second case the errors are around 1.5% and 21% respectively.
 
Publisher TRANSTEC PUBLICATIONS LTD
 
Date 2011-10-24T05:20:08Z
2011-12-15T09:11:30Z
2011-10-24T05:20:08Z
2011-12-15T09:11:30Z
1999
 
Type Article; Proceedings Paper
 
Identifier DAMAS 99: DAMAGE ASSESSMENT OF STRUCTURES,167-1,343-353
0-87849-839-7
1013-9826
http://dspace.library.iitb.ac.in/xmlui/handle/10054/15337
http://hdl.handle.net/100/2104
 
Source 3rd International Conference on Damage Assessment of Structures (DAMAS 99),DUBLIN, IRELAND,JUN 28-30, 1999
 
Language English