| Issue |
EPJ Web Conf.
Volume 250, 2021
DYMAT 2021 - 13th International Conference on the Mechanical and Physical Behaviour of Materials under Dynamic Loading
|
|
|---|---|---|
| Article Number | 06001 | |
| Number of page(s) | 6 | |
| Section | Non Metallic Materials | |
| DOI | https://doi.org/10.1051/epjconf/202125006001 | |
| Published online | 09 September 2021 | |
https://doi.org/10.1051/epjconf/202125006001
Effect of stress pulse shape on the dynamic fracture of soda-lime glass
Institute of Thermomechanics, Czech Academy of Sciences, Prague, Czech Republic
* Corresponding author: buchar@mendelu.cz
Published online: 9 September 2021
The goal of this paper is to evaluate the tensile strength and fracture behavior of the soda lime glass under static and dynamic loading using Brazilian tests. The evaluation of the static tensile strength was performed using the universal testing machine; the fracture behavior under dynamic loading was studied using the Hopkinson Split Pressure Bar (HSPB) Technique. The dynamic loading is realized using the stress pulses of the different shape. In order to obtain the different loading stress pulses impact strikes made from four different materials (Steel, Teflon, Beech, and Polymer) were used. The high-speed camera in both static and dynamic tests was used to obtain some detail view on the failure process of specimens. Experimental results showed that the dynamic tensile strength was at least three times higher than the static one. The initiation of the dynamic fracture occurs when some parameters of the loading stress pulse reaches critical values. These parameters are independent on the stress pulse shape.
© The Authors, published by EDP Sciences, 2021
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