The Effect Of Reinforced-Epoxy Coating On The Bending Modulus Of Micro-Cantilever Using Phase-Shift Shadow Moiré.

Applying an accurate bending modulus value of the material is important in the design and analysis of the reinforced-epoxy coated PET cantilevers. This is because the accurate bending modulus value is important in evaluating the effect of the various coatings onto the micro-cantilever. This resea...

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Main Author:	Lim, Jiunn Hsuh
Format:	Thesis
Language:	English
Published:	2012
Subjects:	TJ1-1570 Mechanical engineering and machinery
Online Access:	http://eprints.usm.my/36875/1/LIM_JIUNN_HSUH_24_Pages.pdf
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id	my-usm-ep.36875
record_format	uketd_dc
spelling	my-usm-ep.368752019-04-12T05:26:25Z The Effect Of Reinforced-Epoxy Coating On The Bending Modulus Of Micro-Cantilever Using Phase-Shift Shadow Moiré. 2012 Lim, Jiunn Hsuh TJ1-1570 Mechanical engineering and machinery Applying an accurate bending modulus value of the material is important in the design and analysis of the reinforced-epoxy coated PET cantilevers. This is because the accurate bending modulus value is important in evaluating the effect of the various coatings onto the micro-cantilever. This research is aimed at applying the phase-shift shadow moiré method (PSSM) for the deflection measurement of reinforced-epoxy coated PET micro-cantilevers in order to determine the bending modulus of the micro-cantilever material. The PSSM was initially developed to measure the deflection of a miniaturized copper cantilever and the feasibility of the method was studied to measure micro-deflection. The PSSM was then modified and improved using image processing techniques to enhance the poor visibility moiré fringes before applying it to measure the deflection of a silicon micro-cantilever. The silicon micro-cantilever specimen was fabricated using surface micro-machining technique. The improved PSSM method was successfully applied to process poor visibility fringe patterns and deflection data was extracted. A study on the effect of different coating materials in the reinforced-epoxy coated PET micro-cantilever was then carried out. The samples were fabricated by applying the aluminum-epoxy and graphite-epoxy coatings on PET sheets through a mold. The micro-cantilevers specimens were then released by cutting the PET with coating according to the patterns of the mold. The various types of the reinforced-epoxy coatings were found xviii to affect the bending modulus of the coated PET micro-cantilevers. The bending modulus increased as the percentages of the aluminum and graphite reinforcement in the epoxy increased. The study of the effect of the coating materials were extended by using the finite element analysis (FEA). The bending modulus values of the various types of coating materials determined from experimental work were applied as the input parameter and the thickness of the coatings were altered. The investigation from the FEA suggested that the optimum thickness of reinforcedepoxy coating is about 180 μm based on the increment of the stiffness. The research work was focused on the specimen preparation and improvement of the PSSM method with image enhancement technique, as well as the study of the effect of the coating on PET cantilever. The research shows that the improved PSSM method is capable of measuring the micro-deflection with minimum error and the bending modulus of the micro-cantilever can be altered by using different coating materials. Without changing the major dimensions of the micro-cantilever, the bending modulus of the composite cantilever material can be varied and therefore microcantilevers with different sensitivities can be produced. 2012 Thesis http://eprints.usm.my/36875/ http://eprints.usm.my/36875/1/LIM_JIUNN_HSUH_24_Pages.pdf application/pdf en public phd doctoral Universiti Sains Malaysia Pusat Pengajian Kejuruteraan Mekanikal
institution	Universiti Sains Malaysia
collection	USM Institutional Repository
language	English
topic	TJ1-1570 Mechanical engineering and machinery
spellingShingle	TJ1-1570 Mechanical engineering and machinery Lim, Jiunn Hsuh The Effect Of Reinforced-Epoxy Coating On The Bending Modulus Of Micro-Cantilever Using Phase-Shift Shadow Moiré.
description	Applying an accurate bending modulus value of the material is important in the design and analysis of the reinforced-epoxy coated PET cantilevers. This is because the accurate bending modulus value is important in evaluating the effect of the various coatings onto the micro-cantilever. This research is aimed at applying the phase-shift shadow moiré method (PSSM) for the deflection measurement of reinforced-epoxy coated PET micro-cantilevers in order to determine the bending modulus of the micro-cantilever material. The PSSM was initially developed to measure the deflection of a miniaturized copper cantilever and the feasibility of the method was studied to measure micro-deflection. The PSSM was then modified and improved using image processing techniques to enhance the poor visibility moiré fringes before applying it to measure the deflection of a silicon micro-cantilever. The silicon micro-cantilever specimen was fabricated using surface micro-machining technique. The improved PSSM method was successfully applied to process poor visibility fringe patterns and deflection data was extracted. A study on the effect of different coating materials in the reinforced-epoxy coated PET micro-cantilever was then carried out. The samples were fabricated by applying the aluminum-epoxy and graphite-epoxy coatings on PET sheets through a mold. The micro-cantilevers specimens were then released by cutting the PET with coating according to the patterns of the mold. The various types of the reinforced-epoxy coatings were found xviii to affect the bending modulus of the coated PET micro-cantilevers. The bending modulus increased as the percentages of the aluminum and graphite reinforcement in the epoxy increased. The study of the effect of the coating materials were extended by using the finite element analysis (FEA). The bending modulus values of the various types of coating materials determined from experimental work were applied as the input parameter and the thickness of the coatings were altered. The investigation from the FEA suggested that the optimum thickness of reinforcedepoxy coating is about 180 μm based on the increment of the stiffness. The research work was focused on the specimen preparation and improvement of the PSSM method with image enhancement technique, as well as the study of the effect of the coating on PET cantilever. The research shows that the improved PSSM method is capable of measuring the micro-deflection with minimum error and the bending modulus of the micro-cantilever can be altered by using different coating materials. Without changing the major dimensions of the micro-cantilever, the bending modulus of the composite cantilever material can be varied and therefore microcantilevers with different sensitivities can be produced.
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Lim, Jiunn Hsuh
author_facet	Lim, Jiunn Hsuh
author_sort	Lim, Jiunn Hsuh
title	The Effect Of Reinforced-Epoxy Coating On The Bending Modulus Of Micro-Cantilever Using Phase-Shift Shadow Moiré.
title_short	The Effect Of Reinforced-Epoxy Coating On The Bending Modulus Of Micro-Cantilever Using Phase-Shift Shadow Moiré.
title_full	The Effect Of Reinforced-Epoxy Coating On The Bending Modulus Of Micro-Cantilever Using Phase-Shift Shadow Moiré.
title_fullStr	The Effect Of Reinforced-Epoxy Coating On The Bending Modulus Of Micro-Cantilever Using Phase-Shift Shadow Moiré.
title_full_unstemmed	The Effect Of Reinforced-Epoxy Coating On The Bending Modulus Of Micro-Cantilever Using Phase-Shift Shadow Moiré.
title_sort	effect of reinforced-epoxy coating on the bending modulus of micro-cantilever using phase-shift shadow moiré.
granting_institution	Universiti Sains Malaysia
granting_department	Pusat Pengajian Kejuruteraan Mekanikal
publishDate	2012
url	http://eprints.usm.my/36875/1/LIM_JIUNN_HSUH_24_Pages.pdf
_version_	1747820649230893056

The Effect Of Reinforced-Epoxy Coating On The Bending Modulus Of Micro-Cantilever Using Phase-Shift Shadow Moiré.

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