@inproceedings{ed7c212ed11449ff9f8969ca5aa938cc,
title = "Ex-situ time-lapse x-ray ct study of 3d micro-structural fatigue damage evolution in uni-directional composites",
abstract = "In this study, the progress of damage under tension-tension fatigue of a uni-directional (UD) glass fibre composite made from a non-crimp fabric is studied using transilluminated white light imaging (TWLI) and X-ray computed tomography (CT). TWLI images are automatically captured throughout the fatigue test, and at two damage levels the test is stopped and the sample is examined by X-ray computed tomography. From the TWLI observations it is apparent that part of the measured initial stiffness drop might be caused by edge effects rather than off-axis cracking. Some of the off-axis cracks are seen to initiate already after the first cycle, whereas some grow gradually and others appear suddenly during cycling. The off-axis cracks are observed to saturate after a few thousand cycles. The UD fibre fracture damage in the region observed by X-ray CT is probably already saturated at the first interruption point, as no significant change is seen between the two X-ray images. However, the study indicates how TWLI can be used as an initial indicator to locate damage regions at an early stage for the future ex-situ X-ray CT experiments.",
keywords = "Damage progression, Fibre fractures, Glass fibre reinforced polymer, Micro-tomography, Off-axis cracks",
author = "Jespersen, \{Kristine M.\} and Ying Wang and Jens Zangenberg and Tristan Lowe and Withers, \{Philip J.\} and Mikkelsen, \{Lars P.\}",
note = "Publisher Copyright: {\textcopyright} 2016, European Conference on Composite Materials, ECCM. All rights reserved.; 17th European Conference on Composite Materials, ECCM 2016 ; Conference date: 26-06-2016 Through 30-06-2016",
year = "2016",
language = "英语",
series = "ECCM 2016 - Proceeding of the 17th European Conference on Composite Materials",
publisher = "European Conference on Composite Materials, ECCM",
booktitle = "ECCM 2016 - Proceeding of the 17th European Conference on Composite Materials",
}