X-ray methods for testing of sewed carbon fiber performs

摘要

Different X-ray methods are investigated for their suitability for inline inspection of carbon fiber preforms in order to monitor the production process. For the verification of correct layer stacking and orientation as well as the detection of foreign materials or low fiber content, different X-ray setups as well as radioscopic and tomosynthesis methods are evaluated and accordingly optimised. The performance of these methods is shown on a set of test samples. Three dimensional computed tomography (CT) techniques are developed for quantitative determination of the carbon fiber content, which is used to estimate the influence of different sewing parameter settings to the local fiber content within the carbon fiber preforms.