Use of laser for non-contact measurement of micro-components, insects, and biological specimens

• Main Author: Hillary Assan, Anak Liam
• Format: Final Year Project Report
• Language: English; English
• Published: Universiti Malaysia Sarawak (UNIMAS) 2017
• Subjects: T Technology (General); TJ Mechanical engineering and machinery
• Online Access: http://ir.unimas.my/id/eprint/25734/1/Use%20of%20laser%20for%20non-contact%2024pgs.pdf; http://ir.unimas.my/id/eprint/25734/4/Hillary.pdf; http://ir.unimas.my/id/eprint/25734/

The use of conventional techniques such micrometer screw gauge or vernier caliper are not suitable for the measurement of micro-components, insects, and biological specimens. Besides, these techniques involve the device come into contact with the specimens thus increases the probability of the specimens being deformed due to the external force exerted by the measuring device. For this reason, a non-contact measuring device is going to be developed and perform a measurement using four samples which are fishing line, hair, goose hair, and a red ant. Two experiments will be done with these four samples. First experiment is for the calibration of the developed device using a fishing line as a reference sample whereas the other three samples will be used for second experiment which is a real experiment. The developed device will work in such a way that a laser is the source of light which will be reflected by two reflecting mirrors with a specimen is being put in between those mirrors. The laser beam will pass through the specimen and will display an image on a screen known as fringe pattern. This image will then process using computer software (MATLAB). Then, the results will be tabulated and discussed.