Damage mechanisms in a short glass fiber reinforced polyamide under fatigue loading

被引：42
作者：
Belmonte, Enrico [1 ,2 ]
De Monte, Matthias [2 ]
Hoffmann, Christian-James [2 ]
Quaresimin, Marino [1 ]
机构：
[1] Univ Padua, Dept Management & Engn, Stradella S Nicola 3, I-36100 Vicenza, Italy
[2] Robert Bosch GmbH, Corp Sect Res & Adv Engn Plast Engn, Robert Bosch Campus 1, D-71272 Renningen, Germany
来源：
INTERNATIONAL JOURNAL OF FATIGUE | 2017年 / 94卷
关键词：
Short fiber reinforced plastics; Damage mechanisms; Fatigue; Electron microscopy; CRACK-PROPAGATION; POLYMER COMPOSITES; BEHAVIOR; FRACTURE; ORIENTATION; MICROSTRUCTURE; TEMPERATURE; ANISOTROPY; STRENGTH; GROWTH;
D O I：
10.1016/j.ijfatigue.2016.09.008
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
This paper presents a damage investigation on a short glass fiber reinforced polyamide (PA66-GF35) under fatigue loading. Plain and notched specimens were tested at room temperature and humidity with load ratio R = 0. Electron microscopy was used to analyze the fracture surface of failed specimens and the crack path of specimens subjected to interrupted fatigue tests. Damage mechanisms were studied investigating the following fractographic features: ductile/brittle matrix fracture behavior, fiber failure/pullout, degree of fibermatrix interfacial adhesion. The aim of the present paper is to understand the nature of damage initiation and propagation in order to lay the foundations for the development of a multi -scale, mechanism-based lifetime prediction model for short fiber reinforced plastics. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：145 / 157
页数：13
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