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Estimation of metal surface roughness using fiber optic displacement sensor |
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| Authors: | S W Harun M Yasin H Z Yang Kusminarto Karyono and H Ahmad |
| Institution: | 1.Department of Electrical Engineering, University of Malaya, 50603, Kuala Lumpur, Malaysia ;2.Photonics Research Centre, Department of Physics, University of Malaya, 50603, Kuala Lumpur, Malaysia ;3.Department of Physics, Faculty of Science and Technology, Airlangga University, Surabaya, 60115, Indonesia ;4.Department of Physics, Faculty of Mathematics and Natural Science, Gadjah Mada University, Yogyakarta, 55281, Indonesia ; |
| Abstract: | A fiber optic displacement sensor is proposed to estimate the roughness of metal surface using the intensity modulation technique. A light beam is launched onto the metal surface via a bundled fiber. The reflected light from the surface is collected and then routed to a silicon detector. The level of roughness for aluminum, stainless steel and copper samples are estimated to be approximately 27, 26, and 20% respectively by fixing the object within the linear range of the sensor. The output voltages are measured as a function of lateral distance to estimate the roughness of the surface. |
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