Exact Damage Identification of Plate-Like Structure using Mode Shapes
Siva Sankara Babu Chinka1, G. Jyosthana Surya Kumari2, M. Guna Sahithi3, S. Mahesh4, M. R. Krishna Mohan5
1Siva Sankara Babu Chinka*, Mechanical Engineering, Lakireddy Bali Reddy College of Engineering, Mylavaram, Andhra Pradesh, India.
2G. Jyosthana Surya Kumari, Mechanical Engineering, Lakireddy Bali Reddy College of Engineering, Mylavaram, India.
3M. Guna Sahithi, Mechanical Engineering, Lakireddy Bali Reddy College of Engineering, Mylavaram, India.
4S. Mahesh, Mechanical Engineering, Lakireddy Bali Reddy College of Engineering, Mylavaram, India.
5M. R. Krishna Mohan, Mechanical Engineering, Lakireddy Bali Reddy College of Engineering, Mylavaram, India
Manuscript received on March 15, 2020. | Revised Manuscript received on March 28, 2020. | Manuscript published on April 10, 2020. | PP: 1264-1272 | Volume-9 Issue-6, April 2020. | Retrieval Number: F4066049620/2020©BEIESP | DOI: 10.35940/ijitee.F4066.049620
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: In this paper, Mode Shape Based Damaged Detection Technique (MSBDT) has been applied for plate-like structures to recognize the damage location and quantify the damage length. Two alternative approaches are exclusively used to extract damage indexes through mode shapes of undamaged plate (i.e. reference data) and damaged plate. The absolute difference of mode shapes used in first approach and mode shape curvatures used in second approach of undamaged and damaged plates. Healthy Aluminium plate was tested in the laboratory for accurate material properties and considered three different damage cases by changing the crack orientation and location for successfully implementation of above approaches. In order to make certain the sensitivity of the proposed approaches, natural frequencies and corresponding mode shapes for first six modes in transverse direction of a plate are obtained by Finite Element Modal Analysis (FEMA) in ANSYS 18.1 and validated by Experimental Modal Analysis (EMA) in virtual instrumentation environment using LabView software.
Keywords: Plate-like Structures, Experimental Modal Analysis, Mode Shape, Damage Identification, Mode Shape Curvature
Scope of the Article: Predictive Analysis