Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7889377 | Composites Part A: Applied Science and Manufacturing | 2018 | 9 Pages |
Abstract
The effect of fiber laser machining (FLM) on multi-directional carbon fiber reinforced plastics (MD-CFRP) with [0/90/45/â45]s lay-up was studied under tension-tension fatigue with stress ratio Râ¯=â¯0.1 for an open hole fatigue (OHF) test configuration. The FLM parameters were chosen to yield a heat affected zone (HAZ) corresponding to a damage factor of approximately 1.4. The growth of this initial damage under tension-tension fatigue was investigated using digital image correlation (DIC), and damage growth characterization was carried out using scanning acoustic microscopy (SAM) and micro computed tomography (micro-CT). The endurance limit of the MD-CFRPs was evaluated by examining the fatigue life at 70, 50 and 30% of its ultimate tensile strength. Results show a strong correlation of damage mode on the applied load levels like conventionally machined samples.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Dinesh Kalyanasundaram, Suhasini Gururaja, Prajakta Prabhune, Dilpreet Singh,