| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Material Behavior Characterization via Multi-Directional Deformation of Sheet Metal
|
| Presentation Title |
Damage Detection of Sheet Metal via Multi-directional Deformation |
| Author(s) |
Brahmananda Pramanik, John Becker, Jared Schmidlin, Wednesday Rehm |
| On-Site Speaker (Planned) |
Brahmananda Pramanik |
| Abstract Scope |
The accurate diagnosis of hidden damage within a sheet metal component (SMC) is the focus of the current research. Vibration test approach is ever challenging and needs serious attention. There is relatively less research on developing non-destructive structural-damage diagnosis technique by analyzing the vibrational mode shapes of the SMC at the operational frequency range. An engineering structure can be modeled as Multi-Degree-Of-Freedom (MDOF) vibration system which has a definite natural frequency corresponding to the degree of freedom. This research collected frequency data, damping parameters, and mode shape data of two typical 2D plates resembling an SMC; one was pristine and other was with known damage. The mode shapes of both plates were compared using an in-house developed MATLAB routine. The two-dimensional coordinate locations of the discrepancy on the mode shapes were considered to determine the location of the damage. Finally, the method was evaluated with a previously unknown damaged specimen. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |