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Frequency-based experimental and theoretical identification of multiple cracks in straight pipes filled with fluid

DSpace at IIT Bombay

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Title Frequency-based experimental and theoretical identification of multiple cracks in straight pipes filled with fluid
 
Creator MURIGENDRAPPA, SM
MAITI, SK
SRIRANGARAJAN, HR
 
Subject elastic moduli
natural frequencies
vibrations (mechanical)
stress intensity factors
 
Description A technique based on measurement of change of natural frequencies has been employed to detect multiple cracks in long pipes containing fluid at different pressures. The cracks have straight fronts and are non-leaking. Both theoretical and experimental results are presented. Two different materials, aluminium and mild steel, have been examined. The fluid considered is water; three (gauge) pressures in the range 0–981 kPa, and crack size to thickness ratio in the range 0.19–0.64 are studied. Two simultaneous cracks are considered in the experiments. The crack locations are predicted with an error less than 4.3%. Results on crack-equivalent rotational spring stiffness, which can be useful in the calculation of natural frequencies and crack size predictions, are reported.
 
Publisher Elsevier
 
Date 2009-04-21T14:11:25Z
2011-11-25T21:11:07Z
2011-12-26T13:08:49Z
2011-12-27T05:34:10Z
2009-04-21T14:11:25Z
2011-11-25T21:11:07Z
2011-12-26T13:08:49Z
2011-12-27T05:34:10Z
2004
 
Type Article
 
Identifier NDT & E International 37(6), 431-438
0963-8695
http://dx.doi.org/10.1016/j.ndteint.2003.11.009
http://hdl.handle.net/10054/1196
http://dspace.library.iitb.ac.in/xmlui/handle/10054/1196
 
Language en