期刊
PROGRESS IN INDUSTRIAL MATHEMATICS AT ECMI
卷 39, 期 -, 页码 349-355出版社
SPRINGER INTERNATIONAL PUBLISHING AG
DOI: 10.1007/978-3-031-11818-0_46
关键词
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We develop a machine-learning image segmentation pipeline to detect ductile fracture in metal materials. The validity of our approach is demonstrated by using a set of images representing fracture surfaces from cold-spray deposits. The machine-learning method shows good predictive capabilities comparable to human expert segmentation.
We develop a machine-learning image segmentation pipeline that detects ductile (as opposed to brittle) fracture in fractography images. To demonstrate the validity of our approach, use is made of a set of fractography images representing fracture surfaces from cold-spray deposits. The coatings have been subjected to varying heat treatments in an effort to improve their mechanical properties. These treatments yield markedly different microstructures and result in a wide range of mechanical properties that combine brittle and ductile fracture once the materials undergo rupture. To detect regions of ductile fracture, we propose a simple machine learning network based on a 32-layers U-Net framework and trained on a set of small image patches. These regions most often contain small dimples and differ by the surface roughness. Overall, the machine-learning method shows good predictive capabilities when compared to segmentation by a human expert. Finally, we highlight other possible applications and improvements of the proposed method.
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