密质骨力-电效应的实验研究

根据从生理盐水中取出时间的长短模拟干骨和湿骨,采用分离式Hopkinson压杆装置研究不同长度和直径的密质骨试件在冲击载荷作用下的压电电压及相应的滞后时间,从而研究干骨和湿骨分别对压电电压滞后时间以及电压幅值的影响,并分析讨论了产生不同压电电压滞后现象的机理。得到以下结论:湿骨电压滞后现象比干骨更为明显;从试件的几何尺寸分析,试件长度和直径都与压电电压幅值成正比;试件离水时间越长,压电电压幅值越小。

Experimental Study on Electromechanical Properties of Compact Bone

SHPB equipment and experimental techniques were used to analyze and characterize the electromechanical effect in compact bone with different length and diameter under impacting,at the same time,the potential which was induced by strain were recorded.We have studied the relations among the electromechanical effects,the length of the specimen,different diameter and the time from the specimen left physiological solution.The experimental results demonstrate that the electromechanical effect of wet bone was more obvious than that of dry bone;the wet bone's hysteresis time was more obvious.The length of the specimen impact the electromechanical effect,the longer the specimen is,the more obvious of electromechanical effect,the same as diameter of the specimen.