Browsing Waterloo Research by Author "PATHAK, NIKKY"
Now showing items 1-5 of 5
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Damage Evolution in Complex-Phase and Dual-Phase Steels during Edge Stretching
PATHAK, NIKKY; Butcher, Clifford; Worswick, Michael J.; Bellhouse, Erika; Gao, Jeff (Multidisciplinary Digital Publishing Institute, 2017-03-27)The role of microstructural damage in controlling the edge stretchability of Complex-Phase (CP) and Dual-Phase (DP) steels was evaluated using hole tension experiments. The experiments considered a tensile specimen with a ... -
Experimental Stress State-Dependent Void Nucleation Behaviour for Two 800 MPa Advanced High Strength Steels
PATHAK, NIKKY; Adrien, Jérome; Butcher, Clifford; Maire, Eric; Worswick, Michael J. (2018-04-26)The influence of microstructure and stress state, as defined by the stress triaxiality and Lode parameter, on micro-void nucleation was evaluated experimentally for two 800 MPa Advanced High Strength Steels (AHSS), one a ... -
Experimental Techniques for Finite Shear Strain Measurement within Two Advanced High Strength Steels
PATHAK, NIKKY; Butcher, Clifford; Worswick, Michael J. (2018-04-26)There is a growing need to experimentally characterize local shear deformation in advanced high strength steels (AHSS) for the calibration of stress-state dependent fracture criteria and to better understand sheared edge ... -
Failure parameter identification and validation for a dual-phase 780 steel sheet
Anderson, David; Butcher, Clifford; Pathak, Nikky; Worswick, Michael J. (Elsevier, 2017-10-01)A hybrid experimental-numerical procedure was implemented to determine the failure surface of a dual-phase 780 steel sheet as a function of the effective plastic strain, triaxiality, and Lode parameter using butterfly ... -
Micromechanical Modelling of Edge Failure in 800 MPa Advanced High Strength Steels
PATHAK, NIKKY; Butcher, Clifford; Adrien, Jérome; Maire, Eric; Worswick, Michael J. (2018-04-26)Sheared edge failure is one of the major problems associated with the forming of advanced high strength steels (AHSS) such as dual-phase (DP) steels. To improve the performance of AHSS in industrial forming operations, ...