DYNAMIC ELECTRO-MECHANICAL PROPERTIES OF WET BONE

尽管干骨和部分水化骨的机电性能 已经被几个调查人员测量过了，很少有信息是 可对湿骨的动态压电行为进行研究。在这 研究中，我们计划测量复压电系数(d‘ij和 D“ij)。在第二年，类似的性能 松质骨也将被测量。信号的频率依赖关系 将在较宽的频率范围内评估压电特性 (最高100 kHz)。机电行为之间的关系 骨骼的显微结构和矿物质含量也将 探索过了。在第三年，我们将尝试开发一种技术来 测量小骨活检标本的机电性能。 预计我们的结果将有助于：1)理解 骨中应变产生电位的机制，2)数学 骨的机电行为模拟，3)新技术的发展 诊断设备，以及4)在表征不同的 正常病变骨标本的机电性能。

Although electromechanical properties of dry and partially hydrated bone have been measured by several investigators, little information is available on the dynamic piezoelectric behavior of wet bone. In this study, we plan to measure the complex piezoelectric coefficients (d'ij and d"ij) of fully wet compact bone. In the second year, similar properties of cancellous bone will also be measured. The frequency dependance of the piezoelectric characteristics will be evaluated for a wide frequency range (up to 100 KHz). The relationship between the electromechanical behavior of bone with it - microstructure and mineral content will also be explored. During the third year, we will attempt to develop a technique to measure the electromechanical properties of small bone biopsy specimens. It is expected that our results will be helpful in: 1) understanding the mechanisms of the strain generated potentials in bone, 2) mathematical modeling of the electromechanical behavior of bone, 3) development of new diagnostic devices, and 4) in characterizing differences in the electromechanical properties of normal diseased bone samples.