Virtual instrument of Wood Vibration System based on Non-Destructive Testing
Data acquisition card and microphone were used to build wood non-destructive testing system based on virtual machines in this paper. Signals of nondestructive vibration experiments was collected and processed by the graphic program of Labview6.1. The dynamic elastic modulus was acquired by the calculation frequency of vibration signals. The static elastic modulus was calculated by the mechanical testing machine. The results showed that the correlation coefficient of dynamic elastic modulus which was acquired by virtual machine method and FFT is 0.958. The correlation coefficient of elastic modulus which was acquired by virtual machine method and the mechanical testing machine is 0.871.Three methods showed a highly degree of linear correlation and the virtual instrument can be applied to calculate the dynamic elastic modulus of wood. The non-destructive testing of wood based on virtual instrument technology has advantages of accurate, simple operation and low cost.
Non-destructive testing virtual instrumentation LabVIEW elastic modulus Fast Fourier Transform(FFT)
Xiao-dong ZHU Jun CAO Feng-hu WANG
Key laboratory of Bio-Based Material Science and Technology of Ministry of Education Northeast Forestry University Harbin,China
国际会议
南京
英文
3-5
2010-08-26（万方平台首次上网日期，不代表论文的发表时间）