[1]滕晓娟,刘昱清,刘鹏,等.弯曲荷载诱发微型梁开裂演化过程可视分析[J].深圳大学学报理工版,2018,35(5):460-466.[doi:10.3724/SP.J.1249.2018.05460]
 TENG Xiaojuan,LIU Yuqing,LIU Peng,et al.Visual analysis for cracking evolution of micro-beam under three-point bending[J].Journal of Shenzhen University Science and Engineering,2018,35(5):460-466.[doi:10.3724/SP.J.1249.2018.05460]
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弯曲荷载诱发微型梁开裂演化过程可视分析()
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《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
第35卷
期数:
2018年第5期
页码:
460-466
栏目:
土木建筑工程
出版日期:
2018-09-25

文章信息/Info

Title:
Visual analysis for cracking evolution of micro-beam under three-point bending
作者:
滕晓娟1刘昱清1刘鹏1洪舒贤1董必钦1邢锋1
深圳大学土木工程学院,广东省滨海土木工程耐久性重点实验室,深圳市土木工程耐久性重点实验室,广东深圳 518060
Author(s):
TENG Xiaojuan1 LIU Yuqing1 LIU Peng1 HONG Shuxian1 DONG Biqin1 and XING Feng1
Department of Civil Engineering, Guangdong Province Key Laboratory of Durability for Marine Civil Engineering, Shenzhen Key Laboratory on Durability of Civil Engineering, Shenzhen University, Shenzhen 518060, Guangdong Province, P.R.China
关键词:
结构工程三点弯曲裂缝扩展过程裂缝长度三维可视化X射线微观层析成像
Keywords:
structural engineering three-point bending crack propagation process crack length 3D visualization X-ray microcomputed tomography technology
分类号:
TU 501
DOI:
10.3724/SP.J.1249.2018.05460
文献标志码:
A
摘要:
传统的三点弯曲试验无法对试样内部裂缝进行可视量化分析.为了直观地观察三点弯曲下试样开裂演化过程,采用X射线微观层析成像(X-ray microcomputed tomography,X-ray μCT)技术对三点弯曲荷载作用下微型梁的开裂过程进行原位追踪监测,基于试样的二维/三维的形貌特征图对孔隙和裂缝进行可视量化分析.结果表明,X-ray μCT测试技术是一种有效的非破坏性的原位跟踪方法,可以获得试样内部孔隙与裂缝三维可视化图,获取三点弯曲试验的试样裂缝扩展全过程,并可进一步对试样的裂缝与孔隙进行定量分析,获得X-ray μCT测试裂缝长度变化曲线与裂缝体积柱状图.研究表明,裂缝长度值与体积随着加载呈上升趋势.
Abstract:
The traditional three-point bending test couldn’t make visible and quantitative analysis of sample internal crack. In order to observe the crack evolution process, we, in-situ, track and monitor the micro-beam cracking process under the three-point bending by X-ray microcomputed tomography technology (X-ray μCT). We analyze quantitatively the pore and crack of micro-beam by 2D/3D visualization of their morphology characteristics. Experimental results show that X-ray μCT technology test is an effective nondestructive and in-situ tracking method; Pore and crack of three-dimensional can be visualized; the crack propagation is obtained under three-point bending test; moreover, crack and pore quantitative analysis can be obtained. We find that the crack length and its volume are increasing with loading.

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更新日期/Last Update: 2018-08-21