Casting Microstructure Inspection Using Computer Vision: Dendrite Spacing in Aluminum Alloys

被引:15
|
作者
Nikolic, Filip [1 ,2 ,3 ]
Stajduhar, Ivan [4 ]
Canadija, Marko [1 ]
机构
[1] Univ Rijeka, Fac Engn, Dept Engn Mech, Rijeka 51000, Croatia
[2] CIMOS Dd Automot Ind, Res & Dev Dept, Koper 6000, Slovenia
[3] Elaphe Prop Technol Ltd, CAE Dept, Ljubljana 1000, Slovenia
[4] Univ Rijeka, Fac Engn, Dept Comp Engn, Rijeka 51000, Croatia
关键词
secondary dendrite arm spacing; convolutional neural network; casting microstructure inspection; deep learning; aluminum alloys; MECHANICAL-PROPERTIES; LEARNING APPROACH; STEEL; CLASSIFICATION;
D O I
10.3390/met11050756
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
This paper investigates the determination of secondary dendrite arm spacing (SDAS) using convolutional neural networks (CNNs). The aim was to build a Deep Learning (DL) model for SDAS prediction that has industrially acceptable prediction accuracy. The model was trained on images of polished samples of high-pressure die-cast alloy EN AC 46000 AlSi9Cu3(Fe), the gravity die cast alloy EN AC 51400 AlMg5(Si) and the alloy cast as ingots EN AC 42000 AlSi7Mg. Color images were converted to grayscale to reduce the number of training parameters. It is shown that a relatively simple CNN structure can predict various SDAS values with very high accuracy, with a R2 value of 91.5%. Additionally, the performance of the model is tested with materials not used during training; gravity die-cast EN AC 42200 AlSi7Mg0.6 alloy and EN AC 43400 AlSi10Mg(Fe) and EN AC 47100 Si12Cu1(Fe) high-pressure die-cast alloys. In this task, CNN performed slightly worse, but still within industrially acceptable standards. Consequently, CNN models can be used to determine SDAS values with industrially acceptable predictive accuracy.
引用
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页数:13
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