Holographic Pattern Measurement of Printed Circuit Board (PCB) Vibration due to Mounted Electromagnetic Relay Operation

Masanari TANIGUCHI  Junichi FUKUDA  Tasuku TAKAGI  Isamu AKASAKI  

IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E76-A   No.7   pp.1170-1173
Publication Date: 1993/07/25
Online ISSN: 
Print ISSN: 0916-8508
Type of Manuscript: Special Section LETTER (Special Section of Letters Selected from the 1993 IEICE Spring Conference)
printed circuit board,  vibration measurement,  electromagnetic relay,  holography,  

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The authors developed new measuring system (Holographic Pattern Measuring System [HPMS]), which is composed of both techniques of holography and graphic image processing, was used to measure the vibrations of a printed circuit board (PCB) due to operation of a mounted electromagnetic relay on it. The clear vibration patterns were obtained. By using pattern analysis processor, quantitative vibration patterns of the PCB surface were observed. Both the vibration patterns and displacements were changed by edge fixing way of the PCB.