Using Acoustic Emissions to Detect Damage in Three-Dimensional Braided Composites

• Published in: Dong Hua da xue xue bao. Zi ran ke xue ban. Vol. 27; no. 4; pp. 589 - 592
• Main Author: 李怡 万振凯 李嘉禄
• Format: Journal Article
• Language: English
• Published: School of Textiles,Tianjin Polytechnic University,Tianjin 300160,China%School of Computer Technology and Automation,Tianjin Polytechnic University,Tianjin 300160,China 31.08.2010; Network Centre of Distance Education,Tianjin Polytechnic University,Tianjin 300160,China%Key Labortory of Advanced Textile Composite Materials,Ministry of Education,Tianjin Polytechnic University,Tianjin 300160,China
• Subjects: acoustic emission; three-dimensional (3D) braided composites; fiber fragmentation
• ISSN: 1672-5220

Three-dimensional（3D）braided composites with better properties have been used in some particular industries.Some have had obvious signs of crack when they are braided.Others have had catastrophic failures occuring without warning.A new methodology for the analysis of failure modes in composite materials by means of acoustic emission techniques has been developed.The occurrence of fiber-breakage during tensile loading tests has been observed by the acoustic emission technology.Using acoustic emission technology is investigated as a means of monitoring 3D braided composites structures,detecting damage,and predicting impending damage.Some of the findings of the research project were presented.