Dynamic compressive mechanical properties of cancellous bone from human lumbar spine

Honglei Ma*, Xiaodong Yu, Chengwen Tan, Chuanxin Liu, Bingkun Liu, Yu Zhu, Hongwei Ma*, Longxi Ren

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Citation (Scopus)

Abstract

Human lumbar spine is vulnerable and often experiences injury in common instances of impact-related trauma. However, the properties of cancellous bone from human lumber vertebra under impact loading remains unclear. The purpose of the present study was to investigate the high strain rate effects on the mechanical properties of human lumber vertebra cancellous bone using the SHPB method, provide new experimental bases for predicting the dynamic mechanical behavior under high strain rates. In this study, the microstructures of cancellous bone was detected by environment scanning electron microscope (ESEM). And the regular quasi-static mechanical experiments were conducted on a standard material testing machine. With the help of split Hopkinson pressure bar (SHPB), the dynamic responses of cancellous bone were observed. The ESEM results shown that the microstructure of concellous bone from L1 to L5 fragments are similar, they should has the same dynamic mechanical characterization. In comparison with other porous composites, concellous bone exhibits brittle characteristics under quasi-static compressive condition. The SHPB experiments shown that the compressive strength and strain rate sensitivity increased with the increasing strain rates and without experience the compaction course. These results of concellous bone under high strain rate are useful to guide the establishing of the medical tolerance or evolution criterion to impact-related trauma.

Original languageEnglish
Title of host publication61st International Astronautical Congress 2010, IAC 2010
Pages2816-2822
Number of pages7
Publication statusPublished - 2010
Event61st International Astronautical Congress 2010, IAC 2010 - Prague, Czech Republic
Duration: 27 Sept 20101 Oct 2010

Publication series

Name61st International Astronautical Congress 2010, IAC 2010
Volume4

Conference

Conference61st International Astronautical Congress 2010, IAC 2010
Country/TerritoryCzech Republic
CityPrague
Period27/09/101/10/10

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