We present a deep learning approach for quantifying and localizing ex-situ porosity within Laser Powder Bed Fusion fabricated samples utilizing in-situ thermal image monitoring data. Our goal is to build the real time porosity map of parts based on thermal images acquired during the build. The quantification task builds upon the established Convolutional Neural Network model architecture to predict pore count and the localization task leverages the spatial and temporal attention mechanisms of the novel Video Vision Transformer model to indicate areas of expected porosity. Our model for porosity quantification achieved a $R^2$ score of 0.57 and our model for porosity localization produced an average IoU score of 0.32 and a maximum of 1.0. This work is setting the foundations of part porosity "Digital Twins" based on additive manufacturing monitoring data and can be applied downstream to reduce time-intensive post-inspection and testing activities during part qualification and certification. In addition, we seek to accelerate the acquisition of crucial insights normally only available through ex-situ part evaluation by means of machine learning analysis of in-situ process monitoring data.

使用深度学习方法基于热图像进行反演定位激光粉床熔化成型制件外置孔隙率，该研究的目标是建立基于成型过程中获得的热图像的实时孔隙分布图。通过卷积神经网络模型来预测孔隙计数和通过视频视觉Transformer模型的时空注意机制来指示预期孔隙存在的区域。本研究在添加制造监测数据上奠定了基于部件孔隙率的“数字孪生”的基础，可以用于减少部件质量认证过程中耗时的后期检测和测试工作。此外，我们通过对成型过程监测数据的机器学习分析，希望加快获得通常仅通过外置部件评估获得的重要洞察。

ThermoPore: 基于热像的深度学习预测零件多孔性