{"685580":{"#nid":"685580","#data":{"type":"event","title":"PhD Proposal by Ruoqi (Rosie) Gao","body":[{"value":"\u003Cp\u003E\u003Cstrong\u003ERuoqi (Rosie) Gao\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003Ewill propose a doctoral thesis entitled,\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003ETexture-Aware Modeling and Experimental Investigation of Residual Stress and Microstructure Evolution in Laser Powder Bed Fusion\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003Eon\u003C\/p\u003E\u003Cp\u003EThursday, October 9th at 2:30 PM\u003C\/p\u003E\u003Cp\u003Ein\u003C\/p\u003E\u003Cp\u003ELove Manufacturing Building Room 210 and\/or \u003Ca href=\u0022https:\/\/teams.microsoft.com\/l\/meetup-join\/19%3ameeting_YjNhMWFjNjYtOTVjZS00ZDM0LWJkYzgtYzExMTE3ZmFiMjU3%40thread.v2\/0?context=%7b%22Tid%22%3a%22482198bb-ae7b-4b25-8b7a-6d7f32faa083%22%2c%22Oid%22%3a%22e7720adf-9abf-4c92-bb25-8ab8a09d754c%22%7d\u0022 target=\u0022_blank\u0022 title=\u0022Meeting join link\u0022\u003E\u003Cstrong\u003EVirtually via Microsoft Teams\u003C\/strong\u003E\u003C\/a\u003E\u003C\/p\u003E\u003Cp\u003EMeeting ID: 228 679 736 166 8\u003C\/p\u003E\u003Cp\u003EPasscode: Nu7bW2Cs\u003C\/p\u003E\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\u003Cp\u003ECommittee:\u003C\/p\u003E\u003Cp\u003EProf. Hamid Garmestani \u2013 School of Materials Science and Engineering (Advisor)\u003C\/p\u003E\u003Cp\u003EProf. Steven Y. Liang \u2013 School of Mechanical Engineering\u003C\/p\u003E\u003Cp\u003EProf. Preet Sigh \u2013 School of Materials Science and Engineering\u003C\/p\u003E\u003Cp\u003EProf. Aaron Stebner \u2013 School of Mechanical Engineering\u003C\/p\u003E\u003Cp\u003EProf. Sa\u00efd Ahzi \u2013 School of Materials Science and Engineering\u0026nbsp;\u003Cbr\u003E\u0026nbsp;\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003EAbstract\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003EMetal additive manufacturing (AM) has emerged as a transformative innovation, redefining modern manufacturing through its design freedom and ability to produce lightweight, high-performance, and complex parts beyond the limits of conventional processes. These advantages have enabled critical applications in aerospace, biomedical, automotive, and energy industries. However, the extreme processing conditions in metal AM \u2013 characterized by steep temperature gradients, rapid cooling rates (103 \u2013 106 K\/s), and repeated thermal cycling \u2013 often generate unique non-equilibrium microstructures, anisotropic materials properties, and significant residual stresses in printed parts. These characteristics pose challenges but also create opportunities for tailoring microstructure and materials performance through process parameter optimization and post-processing. Among metal AM technologies, laser powder bed fusion (LPBF) stands out for its high manufacturing precision and broad range of printable materials, yet persistent issues \u2013 particularly residual stresses, part defects, and limited process control \u2013 limit its broader adoption.\u0026nbsp;\u003C\/p\u003E\u003Cp\u003EThis thesis addresses these challenges by developing a texture-aware modeling framework for process-structure-property-residual stress linkages in LPBF. An analytical thermo-mechanical model is developed to predict texture-induced residual stresses by explicitly incorporating anisotropic elastic properties informed by crystal plasticity. This modeling framework establishes a clear mechanistic pathway linking process parameters, melt pool geometry, crystallographic texture, anisotropic elasticity, and residual stress evolution in LPBF IN718. The novelty of this work lies in the explicit integration of crystallographic texture and property anisotropy \u2013 factors largely overlooked in previous residual stress studies \u2013 while maintaining the computational efficiency of analytical models. Planned experimental investigations of microstructure, residual stress, and defects in as-built LPBF samples will serve both to validate the modeling framework and to provide deeper insights into the underlying process physics.\u0026nbsp;\u003C\/p\u003E\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E","summary":"","format":"limited_html"}],"field_subtitle":"","field_summary":[{"value":"\u003Cp\u003E\u003Cstrong\u003ETexture-Aware Modeling and Experimental Investigation of Residual Stress and Microstructure Evolution in Laser Powder Bed Fusion\u003C\/strong\u003E\u003C\/p\u003E","format":"limited_html"}],"field_summary_sentence":[{"value":"Texture-Aware Modeling and Experimental Investigation of Residual Stress and Microstructure Evolution in Laser Powder Bed Fusion"}],"uid":"27707","created_gmt":"2025-10-07 19:12:33","changed_gmt":"2025-10-07 19:13:13","author":"Tatianna Richardson","boilerplate_text":"","field_publication":"","field_article_url":"","field_event_time":{"event_time_start":"2025-10-09T14:30:40-04:00","event_time_end":"2025-10-09T16:30:40-04:00","event_time_end_last":"2025-10-09T16:30:40-04:00","gmt_time_start":"2025-10-09 18:30:40","gmt_time_end":"2025-10-09 20:30:40","gmt_time_end_last":"2025-10-09 20:30:40","rrule":null,"timezone":"America\/New_York"},"location":"Love Manufacturing Building Room 210 and\/or Virtually via Microsoft Teams","extras":[],"groups":[{"id":"221981","name":"Graduate Studies"}],"categories":[],"keywords":[{"id":"102851","name":"Phd proposal"}],"core_research_areas":[],"news_room_topics":[],"event_categories":[{"id":"1788","name":"Other\/Miscellaneous"}],"invited_audience":[{"id":"78771","name":"Public"}],"affiliations":[],"classification":[],"areas_of_expertise":[],"news_and_recent_appearances":[],"phone":[],"contact":[],"email":[],"slides":[],"orientation":[],"userdata":""}}}