Real-time measuring methods for transient temperatureunder shock loading

Liu Yong-gui; Tang Zhi-ping; Cui Shi-tang

doi:10.11883/1001-1455(2014)04-0471-05

Volume 34 Issue 4

Sep. 2014

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Liu Yong-gui, Tang Zhi-ping, Cui Shi-tang. Real-time measuring methods for transient temperatureunder shock loading[J]. Explosion And Shock Waves, 2014, 34(4): 471-475. doi: 10.11883/1001-1455(2014)04-0471-05

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Real-time measuring methods for transient temperatureunder shock loading

doi: 10.11883/1001-1455(2014)04-0471-05

CAS Key Laboratory of Mechanical Behavior and Design of Materials, University of Science and Technology of China, Hefei 230027, Anhui, China

Funds: Supported bythe National Natural Science Foundation of China (11072240)

More Information

Corresponding author: Liu Yong-gui, , iuyongg@mail.ustc.edu.cn
Received Date: 2012-11-29
Rev Recd Date: 2013-01-14
Publish Date: 2014-07-25

Abstract

Abstract

An infrared detector system was introduced into the apparatus of the split Hopkinson pressure bar. Real-time temperature of the dynamic deformed specimens of pseudo-elastic TiNi alloy and aluminium alloy was measured with calibrated curves of temperature and voltage. The temperature results varied significantly. During loading, the temperature of two kinds of materials kept to rise. The main difference of temperature evolution of two kinds of specimen appeared during unloading. For specimen of aluminium alloy, temperature during unloading kept constant as the maximum temperature during loading. In contrast, temperature of specimen of TiNi alloy decreased significantly. The difference of temperature evolution of specimens reflects that there are different mechanisms of deformation and temperature variation for two kinds of materials. The measured temperature in the infrared method was in good agreement with the temperature calculated by the principle of energy conservation. It means that the infrared method is adaptable for real-time measurement of transient temperature.
- solid mechanics,
- transient temperature,
- infrared temperature measurement,
- Al alloy,
- real-time,
- shock loading,
- pseudo-elastic TiNi alloy

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References

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