Cunha Filipa G, Santos Telmo G, Xavier José
UNIDEMI, Department of Mechanical and Industrial Engineering, NOVA School of Science and Technology, NOVA University Lisbon, 2829-516 Caparica, Portugal.
Materials (Basel). 2021 Mar 19;14(6):1511. doi: 10.3390/ma14061511.
This paper is a critical review of in situ full-field measurements provided by digital image correlation (DIC) for inspecting and enhancing additive manufacturing (AM) processes. The principle of DIC is firstly recalled and its applicability during different AM processes systematically addressed. Relevant customisations of DIC in AM processes are highlighted regarding optical system, lighting and speckled pattern procedures. A perspective is given in view of the impact of in situ monitoring regarding AM processes based on target subjects concerning defect characterisation, evaluation of residual stresses, geometric distortions, strain measurements, numerical modelling validation and material characterisation. Finally, a case study on in situ measurements with DIC for wire and arc additive manufacturing (WAAM) is presented emphasizing opportunities, challenges and solutions.
本文是对数字图像相关技术（DIC）用于检查和改进增材制造（AM）工艺的原位全场测量的批判性综述。首先回顾了DIC的原理，并系统地探讨了其在不同增材制造工艺中的适用性。重点介绍了增材制造工艺中DIC在光学系统、照明和散斑图案程序方面的相关定制。从基于目标主题的原位监测对增材制造工艺的影响方面给出了一个观点，这些目标主题包括缺陷表征、残余应力评估、几何变形、应变测量、数值建模验证和材料表征。最后，给出了一个关于用DIC对电弧增材制造（WAAM）进行原位测量的案例研究，强调了机遇、挑战和解决方案。
