Use of agar/glycerol and agar/glycerol/water as a translucent brain simulant for ballistic testing

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• 作者：Lisa Falland-Cheung^a ; ^{falland.ohio@gmail.com} ; J. Neil Waddell^a ; Milad Soltanipour Lazarjan^b ; Mark C. Jermy^b ; Taylor Winter^a ; Darryl Tong^a ; Paul A. Brunton^a
• 关键词：Brain simulant ; Kinetic energy loss ; Ballistics
• 刊名：Journal of the Mechanical Behavior of Biomedical Materials
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：65
• 期：Complete
• 页码：665-671
• 全文大小：1010 K
• 卷排序：65

文摘

The suitability of agar/glycerol/water and agar/glycerol mixtures as brain simulants was investigated. Test specimens (n=15) (50x27×37mm) were fabricated for these different mixtures and conditioned to 12 °C, 22 °C, and 26 °C prior to testing. For comparison, fresh deer brain specimens (n=20) were sourced and prepared to the same dimensions as the agar/glycerol(/water) mixtures and conditioned to 12 °C and 37 °C. High impact tests were carried out with a 0.22-caliber air rifle pellet and a high-speed camera was used to record the projectile as it passed through the specimens, allowing for energy loss and vertical displacement velocity calculation. Although the agar/glycerol/water mixture presented with similar vertical expansion and contraction of the specimens to the warm and cold deer brains, a two-fold decrease of the vertical expansion and contraction was noticed with the agar/glycerol specimens. Also considerably less extrusion of this mixture out of the exit and entry sides after specimen penetration was observed. Of the simulants tested, agar/glycerol/water was the most suitable brain simulant for ballistic testing and impact studies.