Abstract
Blast pressure measurements of a controlled underwater explosion in the sea were carried out. An explosive of 25-kg trinitrotoluene (TNT) equivalent was detonated, and the blast pressures were recorded by eight different high-performance pressure sensors that work at the nonresonant high-voltage output in adverse underwater conditions. Recorded peak pressure values are used to establish a relationship in the well-known form of empirical underwater explosion (UNDEX) loading formula. Constants of the formula are redetermined by employing the least-squares method in two different forms for best fitting to the measured data. The newly determined constants are found to be only slightly different from the generally accepted ones.
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Acknowledgements
This work was carried out as a part of doctoral studies of the first author at Istanbul Technical University.
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Article Highlights
• Pressure measurements of an underwater explosion in the sea are done at eight different gauges.
• Effects of directionality on blast pressures are observed for gauges at equal distances from the charge but in different directions.
• Coefficients of underwater explosion loading formula are redetermined by the use of measured peak pressure values.
• Two different error functions are employed in the application of the least-squares method for determining the coefficients of the loading formula.
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Tatlısuluoğlu, A., Beji, S. Blast Pressure Measurements of an Underwater Detonation in the Sea. J. Marine. Sci. Appl. 20, 706–713 (2021). https://doi.org/10.1007/s11804-021-00230-1
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DOI: https://doi.org/10.1007/s11804-021-00230-1