Searched for: author%3A%22Walters%2C+C.L.%22
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Walters, C.L. (author), Wallin, K. (author)
This paper gives the theoretical basis for a new method of using Charpy data to estimate fracture toughness in the transition region by using both fracture surface appearance and the traditional Charpy energy. Prior research has shown that the Charpy energy and fracture surface appearance can be used to estimate the upper-shelf J-integral [1]....
conference paper 2013
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Walters, C.L. (author)
An experimental approach for determining the effect of machining the gage section of specimens for quasi-static, biaxial tension/shear testing of sheet steels is described. This method is demonstrated by comparing the results found by an existing testing method with a reduced thickness (Mohr and Oswald Exp Mech 48:65–77, 2008) to that of full...
article 2013
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Walters, C.L. (author), Voormeeren, L.O. (author), Janssen, M. (author), Wallin, K. (author)
Standards have traditionally required that fracture toughness specimens be the full thickness of the base material. However, this requirement may be unnecessary, especially if minimum specimen size dimensions based on plastic zone are met and the subsized specimens are statistically adjusted for the size effect. The current paper presents the...
conference paper 2013
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Walters, C.L. (author), Kofiani, K. (author), Nonn, A. (author), Wierzbicki, T. (author), Kalwa, C. (author)
This paper provides results from a comprehensive study on mechanical characterization of high-strength pipeline steel, grade X100 using experimental and numerical methods. The material was characterized for anisotropic plasticity, fracture initiation for various states of stress, (pre-cracked) fracture toughness and uncracked ductility. The...
public lecture 2012
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Walters, C.L. (author)
This paper describes the effect of impacts on the possible reduction of the structural characteristics and damage growth of graphite-epoxy specimens. The considered specimens are undamaged specimens and specimens impacted with two different energy levels. In particular, barely visible impact damage and visible impact damage are investigated....
article 2012
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Walters, C.L. (author), Schipperen, J.H.A. (author)
More than any other application, simulation of crash events depends on the precise representation of fracture. At the same time, practical considerations typically force the crash analyst to use shell elements for many types of thin-walled structures, such as cars, aircraft, and ships. For these reasons, improving the reliability of fracture for...
conference paper 2012
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Walters, C.L. (author)
public lecture 2011
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Walters, C.L. (author), TNO Bouw en Ondergrond (author)
A high strength steel (DP780was characterized for fracture with the Modified Mohr Coulomb (MMCaccumulated damage approach. Two different methods were used for the characterization and are compared in this paper. The first method, which is representative of procedures used in the sheet metal forming industry, features specimens being membrane...
conference paper 2010
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