以電腦斷層掃描量測大地材料內部裂縫與組構;Measuring inner Crack and Construction of Geo-Material by using Computed Tomography Scan

NCUIR > Engineering College > Graduate Institute of Civil Engineering > Electronic Thesis & Dissertation > Item 987654321/53616

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/53616

Title:	以電腦斷層掃描量測大地材料內部裂縫與組構;Measuring inner Crack and Construction of Geo-Material by using Computed Tomography Scan
Authors:	呂彥標;Liu,Yan-Biao
Contributors:	土木工程研究所
Keywords:	粒徑分佈;體積比;影像處理;裂縫寬度;電腦斷層掃描;particle size distribution.;block volumetric fraction;image processing;crack width;Computed Tomography Scan
Date:	2012-07-22
Issue Date:	2012-09-11 18:03:44 (UTC+8)
Publisher:	國立中央大學
Abstract:	本研究使用了微米電腦斷層掃描將骨材材料試體和某工程墩柱之混凝土鑽心試體進行掃描，此儀器利用X光能穿透物體之特性，掃描出試體每一層斷面的灰階影像，接著以影像處理(Image Processing)技術分離出內部裂縫和組構，再配合自行撰寫之Matlab程式，計算出內部裂縫寬度及骨材顆粒尺寸、比例和粒徑分佈，並將得出之結果進行定量分析，最後再將全部的斷層影像串聯，建構出內部構造之3D立體模型，以利於觀察裂縫和顆粒整體之分佈情形。This study use Micro CT Scan to obtain every cross-section image of the in-situ drill core and man-made specimens and then separate crack and aggregate segments by image processing. After image processing, we can measure the crack width and the size, proportion and the particle size distribution of aggregate with the Matlab and then produce the quantification analysis result. Finally, we can use these cross-section images to build 3D reconstruction models for observing the orientation and distribution of crack and aggregate.
Appears in Collections:	[Graduate Institute of Civil Engineering] Electronic Thesis & Dissertation

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