Quantitative evaluation of induced porosity reference samples implemented by drill hole in CFRP using XCT and various segmentation parameters
Publikation, 2016
Outline
G. Rao, B. Plank, C. Heinzl, J. Kastner - Quantitative evaluation of induced porosity reference samples implemented by drill hole in CFRP using XCT and various segmentation parameters - ECCM17 - 17th European Conference on Composite Materials, Munich, Deutschland, 2016, pp. 1-11
Abstract
Determination of porosity in carbon fibre reinforced polymers (CFRP) using X-ray computed tomography
(XCT) is an important reference method for quality control in aerospace industry. The main objective of
this work is to create reference samples of carbon fibre reinforced polymer (CFRP) and evaluate porosity
quantitatively using X-ray computed tomography (XCT). Artificial porosity was induced in three nonporous
CFRP laminates by multiple cylindrical holes drilled with a diameter of 200 and 300 μm. These
plates were arranged in different permutations to obtain various combinations of a pre-determined void
content. The combinations of CFRP plates were scanned using XCT for porosity determination. The
diameters of the drilled cylinders implanted were measured with voxel size of 5 μm3 XCT scans with an
accuracy of 295 ± 2.75 μm and 196 ± 2.75 μm to obtain reference porosity limits. The reference samples
results show a void content ranging from 0.96 up to 4.81vol. %.
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