Using Voxelisation-Based Data Analysis Techniques for Porosity Prediction in Metal Additive Manufacturing

被引:0
|
作者
George, Abraham [1 ]
Mota, Marco Trevisan [1 ]
Maguire, Conor [1 ]
O'Callaghan, Ciara [1 ]
Roche, Kevin [1 ]
Papakostas, Nikolaos [1 ]
机构
[1] Univ Coll Dublin, Sch Mech & Mat Engn, Lab Adv Mfg Simulat & Robot, Dublin D04 V1W8, Ireland
来源
APPLIED SCIENCES-BASEL | 2024年 / 14卷 / 11期
基金
爱尔兰科学基金会;
关键词
additive manufacturing; voxelisation; porosity; in-process monitoring; machine learning; POWDER-BED FUSION; LASER; CLASSIFICATION; OPTIMIZATION; BEHAVIOR;
D O I
10.3390/app14114367
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Featured Application In-process porosity prediction in metal additive manufacturing.Abstract Additive manufacturing workflows generate large amounts of data in each phase, which can be very useful for monitoring process performance and predicting the quality of the finished part if used correctly. In this paper, a framework is presented that utilises machine learning methods to predict porosity defects in printed parts. Data from process settings, in-process sensor readings, and post-process computed tomography scans are first aligned and discretised using a voxelisation approach to create a training dataset. A multi-step classification system is then proposed to classify the presence and type of porosity in a voxel, which can then be utilised to find the distribution of porosity within the build volume. Titanium parts were printed using a laser powder bed fusion system. Two discretisation techniques based on voxelisation were utilised: a defect-centric and a uniform discretisation method. Different machine learning models, feature sets, and other parameters were also tested. Promising results were achieved in identifying porous voxels; however, the accuracy of the classification requires improvement before being applied industrially. The potential of the voxelisation-based framework for this application and its ability to incorporate data from different stages of the additive manufacturing workflow as well as different machine learning models was clearly demonstrated.
引用
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页数:21
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