Abstract
To test coefficient sensitivity of underwater shockwave pressure sensor, dynamic calibration is conducted using traceable standard bench sensor and PCB913B02 sensor calibration equipment. In the research, silicon oil of different specification was filled into sealed tank in order to study the relations between silicon oil specification and calibration result of pressure sensor. Explosion tests are conducted using explosives of different formulas and underwater shockwave sensors filled with silicon oils of different specifications. The test result shows such principle and the method of calibration mentioned above could ensure the calibration precision, which therefore certifies the accuracy of shockwave pressure test.
Highlights
In the 8th session of the International Study Group for the Standardization of the Methods of Testing Explosives (EXTEST), the participants discussed the underwater explosion measurement and test method for determining the function of explosives
The sensitivity coefficient of such a sensor changes after repeated use, which greatly affects the reliability of the test results
China’s Zhang Li [2] conducted research in this aspect, using TNT drug pack for dynamic calibration, the calibration is based on the classical pressure calculation formula on underwater TNT explosive shock wave summed up by Cole [3]
Summary
In the 8th session of the International Study Group for the Standardization of the Methods of Testing Explosives (EXTEST), the participants discussed the underwater explosion measurement and test method for determining the function of explosives. The test sensors used in various countries are mainly the ICP type of tourmaline underwater sensors produced by American PCB Company [1]. The sensitivity coefficient of such a sensor changes after repeated use, which greatly affects the reliability of the test results. China’s Zhang Li [2] conducted research in this aspect, using TNT drug pack for dynamic calibration, the calibration is based on the classical pressure calculation formula on underwater TNT explosive shock wave summed up by Cole [3]. It is even convenient to use a traceable dynamic calibration system. The sensor needs to be disassembled during sensor calibration. The sensor's built-in silicone oil is inevitably lost in this process. This requires us to find a viable alternative silicone oil to meet the calibration and use requirements of the sensors
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