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https://doi.org/10.1016/j.ijimpeng.2013.04.004
Title: | La-based bulk metallic glass failure analysis under static and dynamic loading | Authors: | Liu, J. Shim, V.P.W. |
Keywords: | Bulk metallic glass Modelling of temperature evolution Pressure Bar (SHPB) Shear band Split-Hopkinson Strain rate effects |
Issue Date: | 2013 | Citation: | Liu, J., Shim, V.P.W. (2013). La-based bulk metallic glass failure analysis under static and dynamic loading. International Journal of Impact Engineering 60 : 37-43. ScholarBank@NUS Repository. https://doi.org/10.1016/j.ijimpeng.2013.04.004 | Abstract: | Samples of La-based bulk metallic glass were tested under both static and dynamic compression, and their failure analysed. The strain rates imposed ranged from 10-4/s to 103/s. Quasi-static compression was performed using an Instron universal testing machine and dynamic compression was applied by means of a Split-Hopkinson Pressure Bar (SHPB). This study focuses on: (1) Shear band characteristics under static and dynamic compression. A high-speed optical camera was used to capture visual images of shear band initiation; fracture surfaces were also examined by SEM; (2) Modelling of shear band temperature evolution within the specimen, with the aid of high-speed infrared camera images, to capture the temperature profile of the shear bands; (3) Effect of strain rate on response of La-based BMG. It is postulated that the negative strain rate dependence observed arises from the non-uniform direction of stress within the material, and stress concentration inside specimens. © 2013 Elsevier Ltd. All rights reserved. | Source Title: | International Journal of Impact Engineering | URI: | http://scholarbank.nus.edu.sg/handle/10635/85343 | ISSN: | 0734743X | DOI: | 10.1016/j.ijimpeng.2013.04.004 |
Appears in Collections: | Staff Publications |
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