Dynamic calibration of pressure sensors by small-scale explosive experiments in an explosion containment vessel

Xue Bing; Ma Hong-hao; Shen Zhao-wu; Yu Yong

doi:10.11883/1001-1455(2015)03-0437-05

Volume 35 Issue 3

Jun. 2015

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Xue Bing, Ma Hong-hao, Shen Zhao-wu, Yu Yong. Dynamic calibration of pressure sensors by small-scale explosive experiments in an explosion containment vessel[J]. Explosion And Shock Waves, 2015, 35(3): 437-441. doi: 10.11883/1001-1455(2015)03-0437-05

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Dynamic calibration of pressure sensors by small-scale explosive experiments in an explosion containment vessel

doi: 10.11883/1001-1455(2015)03-0437-05

Department of Modern Mechanics, University of Science and Technology of China, Hefei 230026, Anhui, China

Received Date: 2014-03-28
Rev Recd Date: 2014-07-06
Publish Date: 2015-05-25

Abstract

Abstract

Air blast experiments of small-scale charges were conducted in an explosion containment vessel.The shock wave velocity was measured by sensor series.And the approximately theoretic peak pressure was determined from the shock wave velocity by using the Rankine-Hugoniot relationship. The sensor was then calibrated, and the relative error of the sensitivity was small.The shock wave parameters were measured and post processed by using the modified-Friedlander equation.The results show that the nonlinear regression by fixing the overpressure is close to the physical fact, and the fitting by fixing the duration has a high precision.Error analysis reveals that the sensor properties and the post-processing methods can produce errors.Experimental results display that the shock wave parameter measuring and post-processing method suggested has a high precision.By this suggested method, the sensor calibration and parameter measurement can be conducted simultaneously.
- mechanics of explosion,
- dynamic calibration,
- air explosion,
- pressure sensor,
- blast vessel,
- shock wave,
- sensor series

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References(7)

References

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