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Evaluation and Correlation of Dynamic Flow, Failure, and Microstructural Properties of Heat-Treated 4130 Steel

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[Technical Report, Doctoral Thesis]

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An experimental program has been carried out in conjunction with the University of Dayton Research Institute tocharacterize the material constants of the Johnson-Cook constitutive and damage models, and additionally, themicrostructure of the failed specimen has been investigated to observe any association of deformation micromechanics tothe phenomenological development of the Johnson-Cook expression. An Analysis of Variance ANOVA statisticalanalysis was carried out to identify whether temperature or strain rate were signixCcant factors in causing changes tomicromechanical features, and if so, whether the micromechanical properties were related to the Johnson-Cookparameters.

Subject Categories:

  • Mechanics

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[A, Approved For Public Release]