||Additive manufacturing (AM) refers to a suite of transformative technologies that enable production of metallic components with complex shape and geometry and facilitate on-demand fabrication of metal parts under austere field conditions. AM technologies, by definition, are industry- and application- oriented. However, AM technologies are not yet widely deployed in industrial settings, with part qualification and certification presenting major challenges. These challenges, if not properly addressed, will inevitably impede the growth of AM technologies.
These challenges are fundamentally rooted in the various aspects of the nonequilibrium fabrication process, for example, inherent variations in the directionality and magnitude of thermo-mechanical strain and temperature gradients, that lead to the formation of heterogeneous microstructures and subsequently nonuniform mechanical properties. Conventional qualification procedures, such as those related to non-destructive evaluation, are often inadequate to reliably detect geometric and non-geometric anomalies. This calls for advanced characterization techniques, especially those in-situ and in-operando techniques, to provide process monitoring and non-destructive evaluation and to close the feedback loop for fabrication of defect-free AM components. The in-situ data, in turn, can be used to validate and provide input for numerical models to predict process-structure-property relationships geared toward industry.
This symposium invites submissions that focus on the use of advanced characterization techniques to investigate metal AM tailored to or closely aligned with industrial applications. Example techniques include, but not limited to, neutron and synchrotron X-ray techniques, optical imaging, thermal imaging, and acoustic detection. Studies that aim at advancing and transitioning AM applications from the research lab environment to industrial applications are desired. We encourage abstracts in the broad areas of:
1. Monitoring of powder spreading
2. Sensing and monitoring defect formation
3. In-situ monitoring of fabrication of parts with tailored microstructures
4. Advanced characterization of mechanical behavior of AM parts, especially their quasi-static or dynamic behaviors in extreme conditions of pressure and temperature.
5. Industry-oriented modeling and numerical simulation that are validated by in-situ measurements.
The goal of this symposium is to share current progress on the application of state-of-the-art advanced characterization techniques to support industrial commercialization of metal AM and promote exchange between the AM industry and scientific community regarding the industrial needs to meet the qualification and certification requirements.