High energy x-rays from a synchrotron source, such as the Advanced Photon Source at the Argonne National Laboratory, can be utilized to perform variety of in-situ and ex-situ material characterizations. This presentation will provide an overview of the various techniques and their applicability in the Additive Manufacturing (AM) for transportation applications. Specifically, the focus of the talk will be on the feed stock materials such as the powders used. Size, size distributions, and morphologies of metal powders used for additive manufacturing are some of the key parameters determining the quality of produced part. Virgin and recycled Ti6Al4V and Ni 718 alloys were investigated using high energy x-rays. High energy x-rays allow for rapid characterization of size and size distributions in a statistically meaningful manner. Further, x-ray tomography technique was used to perform 3D-characterization of powder particles to establish their 3D shapes and their internal porosity. Data from virgin and recycled powders were compared to understand the changes in the powder quality with the number of recycling runs and its potential impact on the part builds.
Dileep Singh, "Application of high-energy x-rays in additive manufacturing process optimizations (Conference Presentation)," Proc. SPIE 10599, Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XII, 1059911 (Presented at SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring: March 07, 2018; Published: 3 April 2018); https://doi.org/10.1117/12.2299696.5763080578001.
Conference Presentations are recordings of oral presentations given at SPIE conferences and published as part of the conference proceedings. They include the speaker's narration along with a video recording of the presentation slides and animations. Many conference presentations also include full-text papers. Search and browse our growing collection of more than 14,000 conference presentations, including many plenary and keynote presentations.
Study of self-shadowing effect as a simple means to realize nanostructured thin films and layers with special attentions to birefringent obliquely deposited thin films and photo-luminescent porous silicon