The micro-mechanics of strength, durability and damage tolerance in composites: new insights from high resolution computed tomography

37th Risø International Symposium on Materials Science

Spearing, S. Mark^1 ; Sinclair, Ian^1

Faculty of Engineering and the Environment, University of Southampton, SO17 1BJ, United Kingdom^1

关键词: Carbon fibre composites;    Cluster formations;    Damage mechanism;    High-resolution computed tomography;    High-resolution X-ray tomography;    Impact damage resistance;    Materials evaluation;    Model prediction;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/139/1/012007/pdf
DOI  :  10.1088/1757-899X/139/1/012007

来源: IOP

【 摘 要 】

Recent work, led by the authors, on impact damage resistance, particle toughening and tensile fibre failure is reviewed in order to illustrate the use of high-resolution X-ray tomography to observe and quantify damage mechanisms in carbon fibre composite laminates. Using synchrotron and micro-focus X-ray sources resolutions of less than 1 μm have been routinely achieved. This enables individual broken fibres and the micromechanisms of particle toughening to be observed and quantified. The data for fibre failure, cluster formation and overall tensile strength are compared with model predictions. This allows strategies for future model development to be identified. The overall implications for using such high-resolution 3-D measurements to inform a "data-rich mechanics" approach to materials evaluation and modeling is discussed.