研究生: |
江俊松 CHIANG, CHUN-SUNG |
---|---|
論文名稱: |
圓管壓力容器之非破壞性檢測 NONDESTRUCTIVE INVESTIGATION OF CYLINDRICAL PRESSURE VESSELS |
指導教授: |
王偉中
Dr. WANG, WEI-CHUNG |
口試委員: | |
學位類別: |
碩士 Master |
系所名稱: |
工學院 - 動力機械工程學系 Department of Power Mechanical Engineering |
論文出版年: | 2002 |
畢業學年度: | 90 |
語文別: | 中文 |
論文頁數: | 88 |
中文關鍵詞: | 非破壞性檢測 、圓管壓力容器 、電子剪切光斑干涉術 、影像轉換 、快速傅利葉轉換 |
外文關鍵詞: | NONDESTRUCTIVE INVESTIGATION, CYLINDRICAL PRESSURE VESSELS, ES, TRANSFORMATION OF IMAGE, FFT |
相關次數: | 點閱:60 下載:0 |
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非破壞性檢測已經廣泛的使用工業界中,不論在產品的製造、使用、保養與維修等等過程都有用到。而所謂的非破壞性檢測便是利用物理原理或是機械、電子的方法與技術,在不破壞產品構件材料的情況下,檢測出材料是否有缺陷或是探測材料物理或是機械性質的檢測技術,其最重要的目的之一在於檢測出材料中是否有缺陷,並藉此判斷此缺陷是否構成安全上的考量。
壓力容器不管是大是小或是圓形或是球形,大多是以焊接的方式製造而成。而壓力容器破壞的因素有很多,從破裂力學的角度來看,破壞與結構件所受之外力、材料本身的物理性質、結構件本身是否有瑕疵、裂縫之大小與數目等都有極大的關係。
本文利用具備全域性、非接觸性、可遙測與非破壞性優點的電子剪切光斑干涉術(Electronic Shearography, ES)的光學方法於圓形壓力容器做非破壞性的檢測。此種方法可以量測到物體的位移梯度,進而可以求得應變之分佈情形,而得知缺陷的所在。
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