Education

Academic Degrees

• Ph.D. Mechanical Engineering, University of Wisconsin-Madison

Courses Taught

• MECH 472/872 - Additive Manufacturing (Fall 2023, Fall 2024)
• MECH 370 - Manufacturing Methods and Processes (Spring 2024, Spring 2025)

About Qilin Guo

Guo's research interests are at the intersection of additive manufacturing, materials science, and advanced in-situ characterization. He is a pioneer in the use of synchrotron-based in-situ X-ray imaging and diffraction to study the physical dynamics of metal additive manufacturing processes, including the formation and evolution of defects such as spatter, porosity, and cracks, as well as heat and mass transfer and phase transformation.

During his Ph.D. studies, Guo focused on characterizing and quantifying the fundamental physics that govern highly dynamic metal additive manufacturing processes, thereby revealing the mechanisms underlying their physical dynamics. His major accomplishments include the characterization of powder spattering, melt pool evolution, and melt flow evolution in the laser power bed fusion additive manufacturing process. Guo also employed in-situ high-energy X-ray diffraction to study the phase transformation dynamics of 17-4 PH steel during rapid solidification. His research has provided crucial insights into the metal additive manufacturing process and could guide the development of more stable and consistent processes.

Honors and Awards

• 2024 Research Development Fellows Program (RDFP) award, University of Nebraska Foundation
• 2022 APSUO Rosalind Franklin Young Investigator Award, Argonne National Laboratory

Selected Publications

A full list of publications is available on Google Scholar.

• Phase transformation dynamics guided alloy development for additive manufacturing. Additive Manufacturing, 59 (2022) 103068.
• Revealing melt flow instabilities in laser powder bed fusion additive manufacturing of aluminum alloy via in-situ high-speed X-ray imaging. International Journal of Machine Tools and Manufacture, 175 (2022) 103861.
• In-situ full-field mapping of melt flow dynamics in laser metal additive manufacturing. Additive Manufacturing, 31 (2020) 100939.
• In-situ characterization and quantification of melt pool variation under constant input energy density in laser powder-bed fusion additive manufacturing process. Additive Manufacturing, 28 (2019) 600-609.
• Transient dynamics of powder spattering in laser powder bed fusion additive manufacturing process revealed by in-situ high-speed high-energy X-ray imaging. Acta Materialia, 151 (2018) 169-180.
• Controlling process instability for defect lean metal additive manufacturing. Nature Communications, 13 (2022) 1-8. 
• Bulk explosion induced metal spattering during laser processing. Physical Review X, 9 (2019) 021052.
• Pore elimination mechanisms during 3D printing of metals. Nature Communications, 10 (2019) 1-8.