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- W2068647531 abstract "Abstract— In order to study the catastrophic disruption of porous bodies such as asteroids and planetesimals, we conducted several impact experiments using porous gypsum spheres (porosity: 50%). We investigated the fragment mass and velocity of disrupted gypsum spheres over a wide range of specific energies from 3 times 103 J/kg to 5 times 104 J/kg. We compared the largest fragment mass (m1/Mt) and the antipodal velocity (Va) of gypsum with those of non-porous materials such as basalt and ice. The results showed that the impact strength of gypsum was notably higher than that of the non-porous bodies; however, the fragment velocity of gypsum was slower than that of the non-porous bodies. This was because the micro-pores dispersed in the gypsum spheres caused a rapid attenuation of shock pressure in them. From these results, we expect that the collisional disruption of porous bodies could be significantly different from that of non-porous bodies." @default.
- W2068647531 created "2016-06-24" @default.
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- W2068647531 date "2009-12-01" @default.
- W2068647531 modified "2023-09-23" @default.
- W2068647531 title "Experimental study on the collisional disruption of porous gypsum spheres" @default.
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- W2068647531 doi "https://doi.org/10.1111/j.1945-5100.2009.tb02004.x" @default.
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