Effect of Temperature on Crater Formation and Ejecta Composition in Aluminum Alloy Targets

Abstract:

The influence of temperature on crater formation and ejecta composition in thick aluminum alloy targets were investigated for impact velocities ranging from approximately 1.5 to 3.5 km/s using a two-stage light-gas gun. The diameter and depth of the crater increased with increasing temperature. The ejecta size at low temperature was slightly smaller than that at high temperature and room temperature. Temperature did not affect the size ratio of ejecta. The scatter diameter of the ejecta at high temperature was slightly smaller than those at low and room temperatures.

• Periodical: Materials Science Forum (Volumes 706-709)
• Pages: 768-773
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.706-709.768
• Online since: January 2012
• Authors: Masahiro Nishida, Koichi Hayashi, Junichi Nakagawa, Yoshitaka Ito
• Keywords: Cratering, Ejecta, Hypervelocity Impact, Temperature, Thick Target

References

[1] O.L. Valerio-Flores, L.E. Murr, V.S. Hernandez, S.A. Quinodes, Observations and simulations of the low velocity-to-hypervelocity impact crater transition for a range of penetrator densities into thick aluminum targets, J. Mat. Sci. 39 (2004).

DOI: 10.1023/b:jmsc.0000043597.72588.d1

[2] V.S. Hernandes, L.E. Murr, I.A. Anchondo, Experimental observations and computer simulations for metallic projectile fragmentation and impact crater development in thick metal targets, Int. J. Impact Eng. 32 (2006) 1981–(1999).

DOI: 10.1016/j.ijimpeng.2005.06.004

[3] Space Systems-Test procedures to evaluate spacecraft material ejecta upon hypervelocity impact (ISO-CD-11227).

DOI: 10.3403/30237422

[4] K. Sugahara, K. Aso, Y. Akahoshi, T. Koura, T. Narumi, Intact measurement of fragments in ejecta due to hypervelocity impact, Proc. 60th Int. Astronautical Cong., (2009) IAC-09-A6. 3. 06.

[5] J.M. Siguier, J.C. Mandeville, Test procedures to evaluate spacecraft materials ejecta upon hypervelocity impact, Proc. IMechE G 221 (2007) 969–974.

DOI: 10.1243/09544100jaero236

[6] D. Numata, T. Kikuchi, M. Sun, K. Kaiho, K. Takayama, Experiment study of ejecta composition in impact phenomenon, Proc. 26th Int. Symp. Shock Waves, (2007) Part X.

DOI: 10.1007/978-3-540-85181-3_4

[7] Structures and properties of aluminum, Japan Institute of Light Metals ed., 1991 478 (in Japanese).

[8] A. Fujiwara, G. Kamimoto, A. Tsukamoto, Expected shape distribution of asteroids obtained from laboratory impact experiments, Nature 272 (1978) 602–603.

DOI: 10.1038/272602a0

[9] F. Capaccioni, P. Cerroni, M. Coradini, P. Farinella, E. Flamini, G. Martelli, P. Paolicchi, P.N. Smith, V. Zappala, Shapes of asteroids compared with fragments from hypervelocity impact experiments, Nature 308 (1984) 832–834.

DOI: 10.1038/308832a0

[10] T. Michikami, A. Nakamura, N. Hirata, The shape distribution of boulders on Asteroid 25143 Itokawa: Comparison with fragments from impact experiments, Icarus 207 (2010) 277–284.

DOI: 10.1016/j.icarus.2009.10.008

[11] P.C. Thomas, J. Veverka, M.S. Robinson, S. Murchie, Shoemaker crater as the source of most ejecta blocks on the Asteroid 433 Eros, Nature 413 (2001) 394–396.

DOI: 10.1038/35096513