2009
DOI: 10.4028/www.scientific.net/kem.413-414.71
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Xiao Qiang Chen, Hong Ping Zhu, Dan Sheng Wang

Abstract: In this paper, a new time-domain method for detecting structural local damage has been developed, which is based on the measured strain signals. The “pseudo strain energy density (PSED)” is defined and used to build two major damage indexes, the “average pseudo strain energy density” (APSED) and the “average pseudo strain energy density changing rate” (APSEDR). A probability and mathematical statistics technique is utilized to derive a standardized damage index. Afterwards, these indexes are used to establish …

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