Comparison between viscous elastic plastic behaviour of the composites reinforced with plain glass fabric and chopped strand mat

7th International Conference on Advanced Concepts in Mechanical Engineering

Stanciu, M.D.^1 ; Harapu, A.^1 ; Drghicescu, H Teodorescu^1 ; Curtu, I.^1 ; Savin, A.^2

Mechanical Engineering Department, Transylvania University of Brasov, Brasov, Romania^1

National Institute of Resarch and Development for Technical Physics, Nondestructive Testing Department, 47 D.Mangeron Blvd, Iasi

700050, Romania^2

关键词: Characteristic curve;    Chopped strand mat;    Elastic-plastic behaviour;    Electronic microscopes;    Isotropic distributions;    Reinforcement materials;    Visco elastic plastics;    Visco-elastic characteristics;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/147/1/012097/pdf
DOI  :  10.1088/1757-899X/147/1/012097

来源: IOP

【 摘 要 】

Composite structures are used mainly two types of reinforcement materials: woven glass fabric and the chopped strand mat, each contributing either to increase the resistance of the composite whole or in isotropic distribution of stresses. This paper presents a comparison of the visco-elastic characteristics of composites reinforced with glass fabric and the chopped strand mat and the breaking mode of the two types of the composite. The first type of samples contain three layers of chopped strand mat known as MAT with density of 450g/m2and 225g/m2) and the second type is composed of four layers of woven glass fabric type RT500 (density of 500g/m2). Both specimens were cut in accordance with EN ISO 527-2 SR. Characteristic curve of the two types of specimens highlights visco-elastic-plastic behavior which largely depends on the type of reinforcement used as the matrix resin is the same in both cases (orthophthalic polyester resin). Breaking mode of those types of specimens were observed and analyzed by electronic microscope.