{"659441":{"#nid":"659441","#data":{"type":"event","title":"PhD Proposal by Mike Standish ","body":[{"value":"\u003Cp\u003E\u003Cstrong\u003ETHE SCHOOL OF MATERIALS SCIENCE AND ENGINEERING\u003C\/strong\u003E\u202f\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u202f\u202f\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003EGEORGIA INSTITUTE OF TECHNOLOGY\u003C\/strong\u003E\u202f\u202f\u202f\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u202f\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003EUnder the provisions of the regulations for the degree\u003C\/strong\u003E\u0026nbsp;\u003Cbr \/\u003E\r\n\u202f\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003EDOCTOR OF PHILOSOPHY\u003C\/strong\u003E\u0026nbsp;\u003Cbr \/\u003E\r\n\u202f\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003Eon Wednesday, August 17, 2022\u003C\/strong\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003E10:00 AM\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003Evia\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cbr \/\u003E\r\n\u003Cstrong\u003EZoom Videoconferencing\u0026nbsp;\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003E\u003Ca href=\u0022https:\/\/gatech.zoom.us\/j\/91234247085?pwd=OTB6QUYrQ0pxeUZNdEM1VlNvUFRrdz09\u0022\u003Ehttps:\/\/gatech.zoom.us\/j\/91234247085?pwd=OTB6QUYrQ0pxeUZNdEM1VlNvUFRrdz09\u003C\/a\u003E\u0026nbsp;\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003EMeeting ID: 912 3424 7085\u0026nbsp;\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003EPasscode: 184501\u0026nbsp;\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003Ewill be held the\u003C\/strong\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u202f\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003EDISSERTATION PROPOSAL DEFENSE\u003C\/strong\u003E\u0026nbsp;\u003Cbr \/\u003E\r\n\u0026nbsp;\u003Cbr \/\u003E\r\n\u003Cstrong\u003Efor\u003C\/strong\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u202f\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003EMike Standish\u003C\/strong\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u202f\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003E\u0026quot;Self-consistent Modeling and Material Property Analysis of an Additively Manufactured Polycrystalline Material\u0026quot;\u003C\/strong\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u202f\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003ECommittee Members:\u003C\/strong\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u202f\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003EProf. Hamid Garmestani, Advisor, MSE\u0026nbsp;\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003EProf. Steven Liang, ME\u0026nbsp;\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003EProf. David L. McDowell, ME\/MSE\u0026nbsp;\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003EProf. Preet Singh, MSE\u0026nbsp;\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003EProf. Sa\u0026iuml;d Ahzi, MSE\u0026nbsp;\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003Cstrong\u003EAbstract:\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003EMaterial testing is a cornerstone to understanding how a given material will perform when used in an engineering application.\u0026nbsp; The procedure for investigating properties begins with manufacturing a physical structure, rigorously testing replicates either destructively or non-destructively, and then analyzing material\u0026#39;s properties using microscopy. This process is both labor intensive and financially burdensome so recent studies have cut the number of samples and overall scope of study that determines how a material can best be utilized.\u0026nbsp; Conducting simulations of material microstructures provides a cost-effective method of maximizing data. The simulations can be linked to experimental data to form useful and flexible models.\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003EThis research expands on material modeling in the field of Additive Manufacturing (AM) by selecting the manufacturing method (Selective Laser Melting (SLM)), choosing a multi-phase crystalline structure of extreme relevance to the manufacturing industries, and focusing on generating a realistic texture microstructural representation of the material by combining process parameters with statistical continuum mechanics theory. Once the material nature is distilled under the continuum, it can be expanded into a full-size structure with common occurring defects and inelastic strain effects by mimicking experimental data studied on samples produced in a similar manner.\u0026nbsp; The bulk material structure can then be expanded into an AM part and its microstructure linked with a desired material property.\u0026nbsp; This study utilizes a self-consistent model to generate a representative texture with the final goal of predicting inelastic properties of the polycrystalline material Titanium-6Al -4V.\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003EThis model builds upon extensive research done by Garmestani et al.\u0026nbsp;\u0026nbsp; His previous work successfully modeled a single-phase body-center-cubic (BCC) structure representing the Ti-beta phase via melt pool thermal evolution using the Rosenthal model.\u0026nbsp; Since then, I have expanded the model to represent two phases, adding the hexagonal close-packed (HCP) structure representative of the Ti-alpha phase by modeling secondary-phase precipitation tied to the cooling of the microstructure.\u0026nbsp; This was accomplished via Bunge texture and microstructure analysis methods.\u0026nbsp; The model controls the texture by generating and then manipulating Euler angles to create unique electron backscatter diffraction (EBSD) and orientation distribution functions (ODF) data.\u0026nbsp; \u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003EThe outlook of this research will add one- and two-dimensional defects as well as incorporate process parameter effects with the intension of constructing a final texture that can be expanded into a fully simulated AM SLM part.\u0026nbsp; The final goal of this project is to formulate a relationship between the generated material texture and the material property of inelastic strain.\u0026nbsp; In accomplishing this endeavor, the model will be easily tailorable towards other properties as well as different crystalline materials. This study aims to better understand a multitude of properties without the financial impact of manufacturing and testing physical samples. This model could assist in predicting the properties of a given material in advance and offer modifications to manufacturing process parameters to achieve a desirable microstructure that will perform as intended.\u003C\/p\u003E\r\n","summary":null,"format":"limited_html"}],"field_subtitle":"","field_summary":"","field_summary_sentence":[{"value":"Self-consistent Modeling and Material Property Analysis of an Additively Manufactured Polycrystalline Material"}],"uid":"27707","created_gmt":"2022-07-15 23:40:36","changed_gmt":"2022-07-15 23:40:36","author":"Tatianna Richardson","boilerplate_text":"","field_publication":"","field_article_url":"","field_event_time":{"event_time_start":"2022-08-17T11:00:00-04:00","event_time_end":"2022-08-17T13:00:00-04:00","event_time_end_last":"2022-08-17T13:00:00-04:00","gmt_time_start":"2022-08-17 15:00:00","gmt_time_end":"2022-08-17 17:00:00","gmt_time_end_last":"2022-08-17 17:00:00","rrule":null,"timezone":"America\/New_York"},"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":"78761","name":"Faculty\/Staff"},{"id":"78771","name":"Public"},{"id":"78751","name":"Undergraduate students"}],"affiliations":[],"classification":[],"areas_of_expertise":[],"news_and_recent_appearances":[],"phone":[],"contact":[],"email":[],"slides":[],"orientation":[],"userdata":""}}}