ELASTIC PROPERTIES OF CANCELLOUS BONE - MEASUREMENT BY AN ULTRASONIC TECHNIQUE
ELASTIC PROPERTIES OF CANCELLOUS BONE - MEASUREMENT BY AN ULTRASONIC TECHNIQUE
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DOI：
10.1016/0021-9290(87)90327-7
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发表时间：
1987-01-01
影响因子：
2.4
通讯作者：
TURNER, CH
中科院分区：
文献类型：
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作者：
ASHMAN, RB;CORIN, JD;TURNER, CH
松质骨的高孔隙率使得传统的力学测试方法难以测量其弹性性能。描述了一种超声技术，利用该技术可以测量各向异性、刚性、多孔材料（如松质骨）的力学性能。该技术利用独特的压电换能器在连续波模式下工作，频率约为50 kHz。纵波和横波都可以用换能器传播和接收，从而允许用该技术确定杨氏模量和剪切模量。用超声波法测得的弹性模量与传统的力学测试法测得的弹性模量进行了比较，结果表明，新方法测定弹性模量的精度较高，（r2 = 0.935，Emech = 1.00 Eult + 23.3 MPa）（r2 = 0.656，Gmech = 1.08 Gult = 3.3 MPa）。
The high degree of porosity of cancellous bone makes elastic property measurement difficult by traditional mechanical testing methods. An ultrasonic technique is described with which mechanical properties of anisotropic, rigid, porous materials, such as cancellous bone, can be measured. The technique utilizes unique piezoelectric transducers operated in a continuous wave mode at a frequency of approximately 50 kHz. Both longitudinal and shear waves can be propagated and received with the transducers allowing both Young''s moduli and shear moduli to be determined with the technique. A comparison between moduli measured with the ultrasonic technique and moduli measured with traditinoal mechanical testing shows the new method to be quite accurate in elastic property determination, (r2 = 0.935, Emech = 1.00 Eult + 23.3 MPa) (r2 = 0.656, Gmech = 1.08 Gult = 3.3 MPa).