Affiliation:
1. Northwestern University
Abstract
Transient stress waves offer a powerful approach for non-destructive condition evaluation of concrete structures. However, currently used stress-wave-generating techniques are limited by poor controllability and/or penetrating ability. Stress wave generation must therefore be improved so that the application of existing and new ultrasonic and sonic non-destructive testing techniques to concrete structures will be more effective. This paper first summarizes the existing, traditional stress-wave-generating techniques for testing concrete structures. A method by which electromagnetic and piezoelectric-based sources are driven by AM burst signals is then introduced, fully detailed and shown to be appropriate for concrete tests in place of traditional sources. The performance of these sources is demonstrated through the results of impact-echo tests and spectral analysis of surface waves performed on a Portland cement concrete structure.
Subject
General Materials Science,Building and Construction,Civil and Structural Engineering
Cited by
12 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献