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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


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An Investigation into Improved Elongation-to-fracture in AHSS via Continuous Bending Under Tension
Damage Detection of Sheet Metal via Multi-directional Deformation
Development of a Lean Duplex TRIP Steel with a Superior Formability
Effects of Y Concentration on Mechanical Response of Mg-Y Alloys
Evolution of Local Formability Concepts for Advanced High Strength Steels (AHSS)
Experimental Studies into the Role of Cyclic Bending during Stretching of Dual-phase Steel Sheets
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Material Modeling in Biaxial Stress Field and Hole Expansion Simulation of Hot-rolled Steel Sheets
Measuring the Multiaxial Nature of Thermomechanical Constitutive Relationships of Crystalline Materials
Microstructural Response of Stainless Steel Subjected to Biaxial Load Path Changes: In-situ Neutron Diffraction and Multi-scale Modeling
Microstructure Control for Enhanced Multi-step Formability
Modeling Anisotropic Plasticity Under Complex Loading Conditions: Effects of Loading Path Changes on Flow Stress, Springback and Formability of Sheet Metals
Modeling of Hole-expansion of Prestrained Sheets Using Distortional Hardening
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Multiscale Modeling of Self-piercing Riveting Process
Production of Commercially Pure Aluminum Strips via a Single-Step, Machining-based Technique
Strain Localization and Damage in a α+β Titanium Alloy: A Study of Microstructure Heterogeneity and Strain Path Effects

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