數位反射式光彈法於長銲鋼軌殘留應力之量測

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Title:	數位反射式光彈法於長銲鋼軌殘留應力之量測
Authors:	張奇偉 Chang, Che-Way
Contributors:	土木工程學系 Civil Engineering
Keywords:	反射式光彈法;數位影像差異化處理;殘留應力量測 Reflection Photoelasticity;Digital discrete image processing;Residual Stress
Date:	2012
Issue Date:	2014-06-26 20:22:34 (UTC+8)
Abstract:	本研究運用影像差異化之影像處理技術，決定光彈應力場上之光彈應力條紋級次，減少以往影像過於相近而誤判及數值離散而造成人為判定的誤差，可快速且準確進行光彈應力條紋的分析，並以數位反射式光彈法之影像處理技術，實際應用於長銲鋼軌之釋放殘留應力量測。本方法以鑽孔方式量測長銲鋼軌內之釋放應力，經由光彈貼片影像擷取/平滑化/差異化(條紋級次分離)/二值化/骨骸化處理後，將可預測光彈貼片上長銲鋼軌內之釋放應力分佈，並結合長銲鋼軌理論與數值模擬方式進行驗證與探討，本研究方法可提供實際長銲鋼軌殘餘應力之量測與分析。 A digital image discrete processing photoelastic coatings system is developed to determine the magnitude of the residual stress in a prestressed long welded rail subjected to an uniform uniaxial compression load and expansion stress analysis. Performing d
Appears in Collections:	[Department of Civil Engineering] Seminar Papers

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