NDLI: Digital-Image-Correlation Technique versus Infinitely Small Element Technique for Crack Analysis of Pipe with Crevice

Content Provider	IEEE Xplore Digital Library
Author	Wen-Pei Sung Ming-Hsiang Shih Chung-Huan Sui
Copyright Year	2009
Abstract	Conduits of water pipelines are subjected to huge internal pressure for conveying water. Cracks induced by water pollution, material defects and seismic excitation may be forming on a conduit to cause damage. This phenomenon generating stress concentration threatens the safety of a conduit. Thus, techniques to monitor the strain variation of a cracked member are essential. Based on the assumption of linear elastic material, the application of the infinitely small element analysis in a crack problem for numerical simulation was validated. Herein, this research reveals that Digital Image Correlation, DIC, technique is a new manner of surveying the practical strain distribution of a member. By the cracked cylindrical pipe test, the DIC method is used to observe the strain variation in the micro-region surrounding the crack tip. Additionally, to utilize the skills of meshing digital image into subimages increases the precision of analyzing a crack problem via the DIC method. According to the experiment in this research, the capacity of DIC method for capturing a crack progress is validated.
Starting Page	105
Ending Page	109
File Size	369061
Page Count	5
File Format	PDF
ISBN	9780769537351
DOI	10.1109/FSKD.2009.419
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-08-14
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	infinitely small element Digital images Pipelines digital image correlation Capacitive sensors crack analysis Stress Image analysis Numerical simulation Water pollution Safety Monitoring Testing
Content Type	Text
Resource Type	Article

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