TWO CRACK DETECTION IN TAPERED CANTILEVER BEAM USING NATURAL FREQUENCY AS BASIC CRITERION
| Main Author: | Deepak Kute*1 & Hredeya Mishra2 |
|---|---|
| Format: | Article Journal |
| Terbitan: |
, 2018
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| Subjects: | |
| Online Access: |
https://zenodo.org/record/1311656 |
Daftar Isi:
- Crack in a vibrating component changes the physical characteristics of a structure which in turn alter its dynamic response characteristics. Crack depth and crack location are main parameters for analysis. In this project a method has been proposed for the detection of open cracks based on frequency measurements on tapered cantilever beams. The present method enables one to detect a crack in a beam without the help of the massless rotational spring model. Both forward and inverse problems are solved and results are presented.In forward problem,the natural frequencies are determined by FEA software i.e. Ansys 18.1. In the experimental study, on cracked tapered cantilever beam Experimental Modal Analysis was performed and measuring the frequency changes. Good agreement is obtained between numerical and experimental natural frequencies. To identify the crack, contours of normalized frequency in terms of crack location and depth are plotted. The error between numerical and experimental is well within the limit, which validates the crack model.