Title :
Basic study on the application of parametric spline function to holographic pattern measuring system (HPMS)
Author :
Tsuchiya, Takasi ; Taniguchi, Masanari ; Akasai, Isamu ; Takagi, Tasuku
Author_Institution :
Fac. of Sci. & Technol., Meijo Univ., Nagoya, Japan
Abstract :
The authors have developed a new measuring system (HPMS) for quantitative measurement of microscopic displacement and mechanical vibration with high precision. In this study, to get high accurate smooth curve of fringe pattern from holographic interferograms, the parametric spline function was applied to HPMS, and the relationship between the number of sample data and the error rate was investigated along with some experiment. We reached the result that the error can be neglected if the number of sampled data are more than 10 in the one circle, then the first and last processing method (FLPM) was used to get quantitative pattern of the surface displacement of the vibrating test sample
Keywords :
acoustic intensity measurement; curve fitting; displacement measurement; holographic interferometry; optical images; splines (mathematics); vibration measurement; 3D graphic image; HPMS; accurate smooth curve; error rate; fringe pattern; holographic interferograms; holographic pattern measuring system; mechanical vibration; microscopic displacement; parametric spline function; quantitative measurement; quantitative pattern; sample data; sampled data; sound pressure; surface displacement; time average method; vibrating test sample; vibration patterns; Area measurement; Displacement measurement; Holography; Lighting; Mechanical variables measurement; Optical interferometry; Radio interferometry; Spline; Time measurement; Vibration measurement;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 1997. IMTC/97. Proceedings. Sensing, Processing, Networking., IEEE
Conference_Location :
Ottawa, Ont.
Print_ISBN :
0-7803-3747-6
DOI :
10.1109/IMTC.1997.603926
