论文标题
激光激发超级分辨率的热成像，以无损检查内部缺陷
Laser excited super resolution thermal imaging for nondestructive inspection of internal defects
论文作者
论文摘要
提出了一种光热超级分辨率技术，以改善内部缺陷的检查。为了评估基于激光的热力计技术的潜力，使用了具有紧密间隔内腔的添加性制造的不锈钢样品。研究了四种不同的实验构型在传播，反射，逐步和连续扫描中。应用的图像后处理方法基于压缩传感，并利用来自多个测量事件的块稀疏性。实验测量策略和数值优化的这种一致方法可以使内部缺陷和表现胜过常规的热力学检查技术。
A photothermal super resolution technique is proposed for an improved inspection of internal defects. To evaluate the potential of the laser-based thermographic technique, an additively manufactured stainless steel specimen with closely spaced internal cavities is used. Four different experimental configurations in transmission, reflection, stepwise and continuous scanning are investigated. The applied image post-processing method is based on compressed sensing and makes use of the block sparsity from multiple measurement events. This concerted approach of experimental measurement strategy and numerical optimization enables the resolution of internal defects and outperforms conventional thermographic inspection techniques.
