Wavelet Analysis of Acoustic Emissions during Tensile Test of Carbon Fibre Reinforced Polymer Composites

World Multidisciplinary Civil Engineering-Architecture-Urban Planning Symposium - WMCAUS

土木建筑工程

wit, Grzegorz^1 ; Adamczak, Anna^1 ; Krampikowska, Aleksandra^1

Kielce University of Technology, Aleja 1000-lecia P.P. 7, Kielce

25-314, Poland^1

关键词: Acoustic emission method;    Carbon fibre reinforced polymer;    Destructive process;    Fibre composite materials;    Material structure;    Mechanical degradation;    Polymer composite;    Traditional Construction Materials;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/245/2/022031/pdf
DOI  :  10.1088/1757-899X/245/2/022031

学科分类：土木及结构工程学

来源: IOP

【 摘 要 】

The increase of the interest in polymer composites in technology and in people's everyday lives has been noticed in the recent years. Producing new materials with polymer matrix of particular properties that cannot be achieved by traditional construction materials contributed to high interest in fibre composite materials. However, a wider use of these materials is limited because of the lack of detailed knowledge about their properties and behaviour in various conditions of exposure under load. Mechanical degradation of polymer composites, which is caused by prolonged permanent loads, is connected with the changes of the material structure that are local or that include the whole volume of the element's body. These changes are in the form of various types of discontinuity, including: deboning, matrix and fibers cracks and delamination. The article presents the example of the application of acoustic emission method based on the analysis of the waves through the use of wavelet analysis for the evaluation of the progress of the destructive processes and the level of the degradation of composite tapes that were subject to tensile testing.