Experimental Analysis of the Influence of Structural Parameters on the Behavior of Glass-Fiber Reinforced Polypropylene Composites

• Дата: 2001
• Автори: Bounouas, L., Benmedakhene, S., Laksimi, A., Neumann, F., Imad, A., Azari, Z.
• Формат: Стаття
• Мова: English
• Опубліковано: Інститут проблем міцності ім. Г.С. Писаренко НАН України 2001
• Назва видання: Проблемы прочности
• Теми: Научно-технический раздел
• Онлайн доступ: http://dspace.nbuv.gov.ua/handle/123456789/46557
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Цитувати: Experimental Analysis of the Influence of Structural Parameters on the Behavior of Glass-Fiber Reinforced Polypropylene Composites / L. Bounouas, S. Benmedakhene, A. Laksimi, F. Neumann, A. Imad, Z. Azari // Проблемы прочности. — 2001. — № 1. — С. 68-82. — Бібліогр.: 15 назв. — англ.

In a composite material reinforced by short random fibers, damage results from different elementary failure mechanisms such as matrix micro-cracking, fiber pull out, failure of fiber/matrix interface, failure of fibers, etc. These damages have a large influence on the macroscopic behavior of composite materials. To obtain a good mechanical performance of a composite material, it is important to optimize the fiber ratio and the quality of the fiber/matrix interface, which have a direct influence on the damage mentioned above. The main objective of this study is to determine the influence of structural parameters on the evolution of damage for two types of polypropylene glass-fiber reinforced composites. In parallel with a classical approach of the mechanical theory of damage, which consists in load-unload tensile tests, the use of acoustic emission allows one to follow in real time the character and the importance of damage mechanisms in the course of loading. In addition, fractographic analysis makes it possible to confirm different assumptions and conclusions from this study.