Browsing Waterloo Research by Author "Butcher, C."
Now showing items 1-13 of 13
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Assessing strain fields in unbalanced unidirectional non-crimp fabrics
Trejo Sandoval, Eleazar Alberto; Ghazimoradi, Mehdi; Butcher, Clifford; Montesano, John (Elsevier, 2020-03)Automation of fabric preforming for resin transfer moulded composite parts motivates the need to characterize the response of dry fabric, which is required for the development of simulation models to predict potential ... -
A comparative investigation into the influence of the constitutive model on the prediction of in-plane formability for Nakazima and Marciniak tests
Noder, Jacqueline; Butcher, C. (Elsevier, 2019-11)The present study investigates the use of both Marciniak and Nakazima tests to generate the forming limit curves (FLCs) for a power-law hardening dual phase steel, DP980, and an aluminum-magnesium alloy, AA5182, that ... -
Constitutive characterization of a rare-earth magnesium alloy sheet (ZEK100-O) in shear loading: Studies of anisotropy and rate sensitivity
Abedini, Armin; Butcher, Clifford; Nemcko, Michael J.; Kurukuri, Srihari; Worswick, Michael J. (Elsevier, 2017-08-01)Rare-earth magnesium alloys such as ZEK100-O offer improved ductility over other conventional magnesium alloys at room temperature; however, they exhibit significant anisotropy and complex yield behaviour. In this work, a ... -
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 ... -
Evaluation and calibration of anisotropic yield criteria in shear Loading: Constraints to eliminate numerical artefacts
Abedini, Armin; Butcher, Clifford; Rahmaan, M. Taamjeed; Worswick, Michael J. (Elsevier, 2017-06-24)Many anisotropic phenomenological yield functions have been proposed in the literature in which their predictive capabilities strongly depend on the experimental calibration data as well as the calibration procedure to ... -
Experimental fracture characterisation of an anisotropic magnesium alloy sheet in proportional and non-proportional loading conditions
Abedini, Armin; Butcher, Clifford; Worswick, Michael J. (Elsevier, 2018-07)A comprehensive experimental investigation was performed to characterize the fracture behaviour of a rare-earth magnesium alloy sheet, ZEK100-O, under both proportional and non-proportional loading conditions. This material ... -
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 ... -
Fracture Characterization of Rolled Sheet Alloys in Shear Loading: Studies of Specimen Geometry, Anisotropy, and Rate Sensitivity
Abedini, Armin; Butcher, Clifford; Worswick, Michael J. (Springer, 2017-01-01)Two different shear sample geometries were employed to investigate the failure behaviour of two automotive alloy rolled sheets; a highly anisotropic magnesium alloy (ZEK100) and a relatively isotropic dual phase steel ... -
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, ... -
Predicting the axial crush response of CFRP tubes using three damage-based constitutive models
Cherniaev, Aleksandr; Butcher, Clifford; Montesano, John (Elsevier, 2018-08)Availability of newly developed rapid manufacturing processes may in the near future enable the integration of continuous fiber composites into vehicles while maintaining the volume production rates typical for the automotive ... -
Process parameters for hot stamping of AA7075 and D-7xxx to achieve high performance aged products
Omer, Kaab; Abolhasani, Atekeh; Kim, Samuel; Nikdejad, Tirdad; Butcher, Clifford; Wells, Mary; Esmaeili, Shahrzad; Worswick, Michael (Elsevier, 2018-07)This work examines the necessary process parameters for die quenching (DQ) during hot stamping and subsequent age hardening and paint bake cycle (PBC) response for two alloys: AA7075 and a developmental 7xxx alloy (referred ...