Dr. Evren Yasa
Head of Additive Manufacturing, University of Sheffield, Advanced Manufacturing Research Centre (AMRC) will present a talk titled:
The Disruptive Potential of Additive Friction Stir Deposition: A Solid-State Alternative to Fusion-Based AM
Abstract: Additive Friction Stir Deposition (AFSD) is reshaping the landscape of advanced manufacturing by offering innovative alternatives to “conventional” fusion-based Additive Manufacturing (AM) methods. AFSD, also known as MELD, leverages bar-type feedstock and frictional-deformational heat to achieve bonding through extensive plastic deformation at temperatures below the material’s melting point. By avoiding melting and rapid solidification, AFSD eliminates key challenges like hot cracking, porosity, and high residual stresses associated with fusion-based processes.
This solid-state approach enables manufacturing in ambient air, high deposition rates, and the production of parts with excellent mechanical properties. These advantages position AFSD as a transformative solution for industries such as aerospace, marine, and energy where large-format castings and forgings often suffer from long lead times. Despite its many benefits, the industrial adoption of AFSD is still limited by its relatively low technology readiness level and the need for a deeper understanding of its process-microstructure-property relationships. This talk will explore the disruptive potential of AFSD as a solid-state alternative to fusion-based AM, offering insights into recent advancements, its role in overcoming current manufacturing challenges, and the ongoing innovations driving its evolution as a transformative technology.
Date: December 6, 2024
Time: 11:00 am
ZOOM Link for virtual attendance:
https://clarkson.zoom.us/j/93541691606?pwd=cggjBnvRrYbr7mPOCqmmThM0lOOzOd.1
You can access this link by going to the Virtual Class & Recordings tab in Moodle.
Bio: Dr. Evren Yasa graduated with her degree in Mechanical Engineering from the Istanbul Technical University (Turkey) and completed her master’s degree at the University of British Columbia (BC, Canada) in volumetric error modeling and compensation. She received her Ph.D. degree with her thesis on “Combined Process of Selective Laser Melting and Selective Laser Erosion/Laser Re-melting” at the Catholic University of Leuven, for which she was awarded the “Emerald Outstanding Doctoral Study-Highly Commended”. After her Ph.D. study, she worked as a senior engineer at TEI, a GE-joint venture company specializing in manufacturing aero-engine parts, where she led Additive Manufacturing projects and facilities. Later, she joined Eskisehir Osmangazi University as an assistant professor and worked as a consultant to aerospace and defense companies to adopt Additive Manufacturing processes. She has been working as an independent expert in the field of laser-based manufacturing on behalf of the European Commission to evaluate proposals and project progress. She joined AMRC, from the University of Sheffield, in July 2022 and works as the Head of Additive Manufacturing leading AM activities and capabilities to address the industrialization of mainly metallic AM processes to widen its scope and applicability to real-world problems.