Assessment of fracture process of engineered cementitious composite (ECC) by time-frequency analysis of acoustic emission signals
Author(s): |
Wentao Wang
Mingfeng Xu Yi Bao |
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Medium: | journal article |
Language(s): | English |
Published in: | Smart Materials and Structures, 2 March 2023, n. 4, v. 32 |
Page(s): | 044003 |
DOI: | 10.1088/1361-665x/acc1ba |
Abstract: |
Engineered cementitious composite (ECC), also known as strain-hardening cementitious composite, exhibits high ductility and high toughness. The high ductility and high toughness of ECC are associated with finely-tuned matrix cracking, fiber rupture, and fiber-matrix debonding. This study investigates the fracture process of ECC through a time-frequency analysis of acoustic emission (AE) signals. The frequency characteristics of individual AE hits were used to evaluate different types of damage throughout the fracture process. The evolution of damage was assessed, and the AE energy was calculated. The effects of matrix flaw and fiber content on the fracture process were investigated. The test results revealed that different damage stages featured different AE frequency characteristics, which were used to classify damage types. ECC showed high energy absorption along with the high toughness. This research enhances the understanding of the fracture process of ECC and advances the capability of assessing the damages. |
Copyright: | © 2023 Wentao Wang, Mingfeng Xu, Yi Bao |
License: | This creative work has been published under the Creative Commons Attribution 4.0 International (CC-BY 4.0) license which allows copying, and redistribution as well as adaptation of the original work provided appropriate credit is given to the original author and the conditions of the license are met. |
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10707637 - Published on:
21/03/2023 - Last updated on:
07/02/2024