Experimental Analysis of Monotonic and Cyclic Pull-Out of Steel Fibres by Means of Acoustic Emission and X-ray Microfocus Computed Tomography

Proceedings

Wilder, Kristof De¹  Smedt, Maure De²  Verstrynge, Els³ 

[1] Author to whom correspondence should be addressed.;Department of Civil Engineering, KU Leuven, 3000 Leuven, Belgium;Presented at the 18th International Conference on Experimental Mechanics, Brussels, Belgium, 1–5 July 2018

关键词: acoustic emission technique;    X-ray computed tomography;    pull-out behavior;    steel fibre reinforced concrete;   

DOI  :  10.3390/ICEM18-05226

学科分类：社会科学、人文和艺术（综合）

来源: mdpi

【 摘 要 】

This research aims to investigate the monotonic and cyclic pull-out behavior of steel fibres by means of advanced non-destructive testing methods (NDT). Forty individually embedded steel fibres in a concrete matrix are tested in a pull-out setup with continuous acoustic emission monitoring and X-ray microfocus computed tomography is applied before, during and after testing. The developed setup allows to improve and to better control the experiments. The combination of NDT methods leads to a deeper insight compared to the traditional pull-out tests, by inspection of deviating results, detection of the pull-out stages, and localization of internal damage combined with visualization of the internal structure.

【 授权许可】

CC BY