A Simple Methodology to Measure the Dynamic Flexural Strength of Brittle Materials |
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Authors: | A Belenky D Rittel |
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Institution: | (1) Faculty of Mechanical Engineering Technion, Israel Institute of Technology, 32000 Haifa, Israel; |
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Abstract: | A simple methodology is proposed for measuring the dynamic flexural strength of brittle materials. The proposed technique
is based on 1-point impact experimental setup with (unsupported) small beam specimens. All that is needed is a measurement
of the prescribed velocity as a boundary condition and the fracture time for a failure criterion, both to be input in a numerical
(FE) model to determine the flexural strength. The specimen was modeled numerically and observed to be essentially loaded
in bending until its final inertial failure. The specimen’s geometry was optimized, noting that during the very first moments
of the loading, the specimen length does not affect its overall response, so that it can be considered as infinite. The use
of small beam specimens allow large scale testing of the flexural strength and comparison between static and dynamic loading
configurations. Preliminary experiments are presented to illustrate the proposed approach. |
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Keywords: | |
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