生物力学等效仿真软质材料超声测量方法的分析与研究

Analysis and Research of Ultrasonic Test Methods of Biomechanical Equivalent Artificial Soft Materials

针对生物力学等效仿真软质材料的特点,在对超声传播性质及其检测原理进行分析研究的基础上,提出了生物力学等效仿真软质材料的超声检测方法,设计了超声测量等效仿真软质材料力学性能的测试分析系统,并对3种不同密度的等效仿真材料的声速,弹性模量和声衰减等参数进行了测算,在基于Labwindows/CVI和MATLAB的平台上对超声回波信号进行了分析处理,实现了生物力学等效仿真软质材料的超声测量。最后对仿真材料的力学性质与超声回波信号之间的关系进行了分析,结果证明了所提方法的可行性。

Based on the analysis of the transmission character and detecting principle of the ultrasonic wave,a ultrasonic test method of biomechanical equivalent artificial soft materials was put forward,and a measurement and analysis system of ultrasonic test for the mechanical properties of the artfical soft materials was designed. The wave speed,elastic modulus,attenuation of three types of biomechanical equivalent artificial soft materials with different density were tested and calculated. Based on the platform of Labwindows/CVI and MATLAB,the ultrasonic echo signalwas decomposed and analyzed in details with many methods. At last,the relationship between the mechanical properties of equivalent artificial soft materials and the ultrasonic echo signal was analyzed. The results indicated that the proposed method is correct and validated.