Structural Health Monitoring and Damage Detection of Structures by Wavelet Analysis

سال انتشار: 1395
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 846

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شناسه ملی سند علمی:

RCEAUD02_740

تاریخ نمایه سازی: 16 شهریور 1395

چکیده مقاله:

Damages, such as cracks and delaminations, are inevitable in aerospace, aeronautical, mechanical and civil engineering structures during their service life. To ensure the structure integrity and prevent the structure damages from the deterioration at an alarm rate, advanced structural health monitoring (SHM) techniques are required and have been widely studied during last few decades. This paper presents numerical applications of the wavelet transform for damage detection in a cantilever beam subjected to static analysis. The modeling of damage is done in finite elements using ABAQUS 6.13 program. The technical computing software MATLAB R2007a is employed for the data processing and wavelet transform in our study. The static response (in displacement) of the structure with simulated damage is used in the analysis to detect the location of damage using the wavelet transform. The results of analysis are presented and discussed in this paper. The wavelet detection technique makes it possible to detect cracks which require minimal input data, i.e. only the response of the structure. The main advantage gained by using wavelets is the ability to perform local analysis of a signal which is capable of revealing some hidden aspects of the data that other signal analysis techniques fail to detect.

نویسندگان

S.Mohammad Reza Mortazavi

Shahid Rajaee Teacher Training University

Mohammad Mahdi Shamooshaki

Imam Hossein Comprehensive University

Behrouz Zaeimdar

Shahid Rajaee Teacher Training University