Ultrasound monitoring for evaluation of damage in reinforced concrete

Bulletin of the Polish Academy of Sciences. Technical Sciences

M. RuckaCorresponding authorDepartment of Structural Mechanics, Faculty of Civil and Environmental Engineering, Gdansk University of Technology, 11/12 Narutowicza St., 80-233 Gda?sk, PolandEmailOther articles by this author:De Gruyter OnlineGoogle Scholar¹  K. WildeDepartment of Structural Mechanics, Faculty of Civil and Environmental Engineering, Gdansk University of Technology, 11/12 Narutowicza St., 80-233 Gda?sk, PolandOther articles by this author:De Gruyter OnlineGoogle Scholar¹ 

[1] Department of Structural Mechanics, Faculty of Civil and Environmental Engineering, Gdansk University of Technology, 11/12 Narutowicza St., 80-233 Gda?sk, Poland

关键词: Keywords : concrete;    degradation;    micro-cracking;    non-destructive evaluation;    ultrasonic waves;   

DOI  :  10.1515/bpasts-2015-0008

学科分类：工程和技术（综合）

来源: Polska Akademia Nauk * Centrum Upowszechniania Nauki / Polish Academy of Sciences, Center for the Advancement of Science

【 摘 要 】

The paper deals with automated monitoring of damage evolution in concrete elements subjected to three-point bending tests. The monitoring is based on the nonlinear interactions of traveling ultrasonic waves with micro-crack zones inside the concrete specimens and surface-breaking cracks. The developed procedure assumes semi-continuous ultrasonic testing during the element full loading cycle and generation of the power spectral density maps for the on-line assessment of the degradation process. Two damage indicators are introduced to evaluate micro- and macro-damage. The preliminary experimental results show that the proposed automated monitoring system provides an effective method for the evaluation of progressive damage in concrete.

【 授权许可】

Unknown