In-process monitoring and non-destructive evaluation for metal additive manufacturing processes
Abstract
The rapid pace of maturation of metal additive manufacturing (AM) technologies, makes them an excellent candidate for the fabrication of nuclear power plant (NPP) components. However, the current levels of process variations create numerous challenges yet to be overcome for industrial acceptance of AM for NPP applications. One of those challenges is associated with the qualification and certification of fabricated components for mission-critical applications such as NPPs. To reduce the cost of qualification and certification, in-process monitoring and in-process non-destructive evaluation (NDE) are considered essential tools. This report aims to support the efforts of the U.S. Nuclear Regulatory Commission (NRC) to meet the challenges of the certification of the NPP components fabricated by AM technologies. It provides a review of the current state-of-the-art in the areas of in-process monitoring and in-process NDE methods, instruments, and relevant standards, identifying gaps in knowledge, technologies, and standards to achieve the goal of using them as robust tools for the AM process and part qualification.
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