Impulsive Tension of Ethanol under Shock Loading |
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Authors: | A. V. Utkin V. A. Sosikov |
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Affiliation: | (1) Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, 142432, Russia |
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Abstract: | This paper reports results from experimental studies of the strength of ethanol under impulsive tension due to interaction of a triangular compression pulse with the free surface. The experiments were performed in the range of strain rates 4 ⋅ 104-4 ⋅ 105 sec−1. It is established that the failure of ethanol is a two-stage process. In the first stage at a negative pressure of about 14 MPa, pore formation begins, which proceeds at a rather low rate and is manifested as an inflection on the free-surface velocity profile. In the second stage, the porosity growth rate increases, resulting in formation of a spalling pulse. The possibility of using the model of homogeneous nucleation to interpret experimental data is discussed.__________Translated from Prikladnaya Mekhanika i Tekhnicheskaya Fizika, Vol. 46, No. 4, pp. 29–38, July–August, 2005. |
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Keywords: | ethanol cavitation spalling shock waves impulsive tension |
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