Study on Static and Dynamic Brazilian Splitting Test of Artificial Stones

GU Chunmiao; LIU Guanlin; ZHOU Fenghua; LI Kebin

doi:10.11858/gywlxb.20240738

Volume 38 Issue 5

Sep 2024

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Chinese Journal of High Pressure Physics > 2024 > 38(5): 054105.

GU Chunmiao, LIU Guanlin, ZHOU Fenghua, LI Kebin. Study on Static and Dynamic Brazilian Splitting Test of Artificial Stones[J]. Chinese Journal of High Pressure Physics, 2024, 38(5): 054105. doi: 10.11858/gywlxb.20240738

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GU Chunmiao, LIU Guanlin, ZHOU Fenghua, LI Kebin. Study on Static and Dynamic Brazilian Splitting Test of Artificial Stones[J]. Chinese Journal of High Pressure Physics, 2024, 38(5): 054105. doi: 10.11858/gywlxb.20240738

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Study on Static and Dynamic Brazilian Splitting Test of Artificial Stones

doi: 10.11858/gywlxb.20240738

1.
Key Laboratory of Impact and Safety Engineering, Ministry of Education, Ningbo University Ningbo 315211, Zhejiang, China
2.
The First Affiliated Hospital of Ningbo University, Ningbo 315211, Zhejiang, China

Received Date: 29 Feb 2024
Rev Recd Date: 20 Mar 2024
Issue Publish Date: 29 Sep 2024

Abstract

Abstract

This article aims to explore the mechanical properties of artificial stones under different conditions. Firstly, dental plaster samples with different ratios (hardness, porosity, powder-to-water ratio, and protein content) were prepared as artificial stones to study the splitting behavior. Secondly, quasi-static Brazilian splitting test were conducted on artificial stones. Finally, a $\varnothing$40 mm split Hopkinson pressure bar (SHPB) was used for dynamic loading, combined with high-speed cameras, digital image correlation (DIC) and other testing methods to observe the damage process during sample splitting and the evolution law of the strain field, and then obtain the strain time history curve of the sample was obtained. Test results show that the quasi-static tensile strength of artificial stones is directly proportional to the hardness and powder-to-water ratio, and inversely proportional to the porosity. And the protein content has little effect on the tensile strength of the material, but it does affect its ductility and brittleness. Under dynamic loading, the artificial stone specimen has an obvious strain rate strengthening effect. There is a linearly increasing relationship between the dynamic enhancement factor for tensile strength and the logarithm of the strain rate. This article provides an effective test method and analysis technique for studying the mechanical properties of artificial stones.
- artificial stones,
- Brazilian splitting,
- strain rate,
- split Hopkinson pressure bar,
- digital image correlation,
- dynamic increase factor

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References(28)

References

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