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Title: Characterisation of dynamic behaviour of alumina ceramics: evaluation of stress uniformity
Authors: Wang, Zhiyong
Li, Peifeng
Issue Date: 2015
Source: Wang, Z., & Li, P. (2015). Characterisation of dynamic behaviour of alumina ceramics: evaluation of stress uniformity. AIP Advances, 5(10), 107224-.
Series/Report no.: AIP Advances
Abstract: Accurate characterisation of dynamic behaviour of ceramics requires the reliable split-Hopkinson pressure bar (SHPB) technique and the condition of uniaxial homogeneous specimen deformation. In this study, an experimentally validated 3D finite element model of the full scale SHPB experiment was developed to quantitatively evaluate the wave propagation in the bars and the stress distribution/evolution in the alumina specimen. Wave signals in both the SHPB experiments and the finite element model were analysed to characterise the dynamic behaviour of alumina. It was found that the equilibrium of both stresses within the specimen and forces at the specimen ends can be established in the intermediate stage of deformation. The validity of stress uniformity in the alumina specimen supports the assumption of uniaxial homogeneous specimen deformation in the SHPB and validates the characterisation of dynamic behaviour of alumina ceramics.
ISSN: 2158-3226
DOI: 10.1063/1.4934793
Schools: School of Mechanical and Aerospace Engineering 
Rights: © 2015 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution 3.0 Unported License.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MAE Journal Articles

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