{"645856":{"#nid":"645856","#data":{"type":"event","title":"PhD Defense by Adrienne Muth","body":[{"value":"\u003Cp\u003E\u003Ca name=\u0022_Hlk64318204\u0022\u003E\u003Cstrong\u003ETHE SCHOOL OF MATERIALS SCIENCE AND ENGINEERING\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nGEORGIA INSTITUTE OF TECHNOLOGY\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nUnder the provisions of the regulations for the degree\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDOCTOR OF PHILOSOPHY\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\non Friday, April 9, 2021\u003Cbr \/\u003E\r\n12:00 PM\u003C\/strong\u003E\u003C\/a\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003Evia\u003C\/strong\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003EBlueJeans Video Conferencing\u003C\/strong\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Ca href=\u0022https:\/\/nam12.safelinks.protection.outlook.com\/?url=https%3A%2F%2Fbluejeans.com%2F396605134\u0026amp;data=04%7C01%7Ctatianna.richardson%40grad.gatech.edu%7C7da07f8b00824032582008d8f2c86e67%7C482198bbae7b4b258b7a6d7f32faa083%7C0%7C0%7C637526289950239676%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000\u0026amp;sdata=%2F3kBNjG%2FcL0sVhrzlW4KjlAb9eezeRwqEQ9yMZ8vraA%3D\u0026amp;reserved=0\u0022 title=\u0022Original URL:\r\nhttps:\/\/bluejeans.com\/396605134\r\n\r\nClick to follow link.\u0022\u003Ehttps:\/\/bluejeans.com\/396605134\u003C\/a\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cbr \/\u003E\r\n\u003Cstrong\u003Ewill be held the\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDISSERTATION\u0026nbsp;DEFENSE\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cbr \/\u003E\r\n\u003Cstrong\u003Efor\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cbr \/\u003E\r\n\u003Cstrong\u003EAdrienne Muth\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u0026quot;A Large Scale Computational Study of Fatigue Hot-spots\u0026quot;\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nCommittee Members:\u003C\/strong\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003EProf. David McDowell Advisor, ME\/MSE\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003EProf. Surya Kalidindi ME\/MSE\/CSE\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003EProf. Richard Neu ME\/MSE\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003EReji John, Ph.D., AF Research Lab, Materials and Manufacturing Directorate\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003EAdam Pilchak, Ph.D., AF Research Lab, Materials and Manufacturing Directorate\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cbr \/\u003E\r\n\u003Cstrong\u003EAbstract:\u003C\/strong\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003EFormation of a fatigue crack at the subgrain scale is a statistically rare event, as plastic deformation at the microscale ranges from highly heterogeneous at low strain to homogeneous at high strain. Fatigue Indicator Parameters (FIPs) for Ti-6Al-4V are computed using crystal plasticity finite element modeling of uniaxial cyclic straining of ensembles of statistical volume elements for a range of distinct microstructures at several strain amplitudes and mean strain conditions.\u0026nbsp; The selection of FIPs is informed by prior experimental studies. The sites of extreme value (EV) FIPs that are most likely to form and grow a fatigue crack are identified in these simulations, and 2-point spatial correlations are applied to investigate the higher dimensional influence of microstructure attributes in the neighborhood of these fatigue hot-spots. To reduce the high dimensionality of the associated 2-point correlations, principal component analysis is applied.\u0026nbsp; A reduced-order model using an artificial neural network is used to classify EV FIP locations based on these neighborhood spatial correlations.\u003C\/p\u003E\r\n","summary":null,"format":"limited_html"}],"field_subtitle":"","field_summary":"","field_summary_sentence":[{"value":"A Large Scale Computational Study of Fatigue Hot-spots"}],"uid":"27707","created_gmt":"2021-03-29 17:16:43","changed_gmt":"2021-03-29 17:16:43","author":"Tatianna Richardson","boilerplate_text":"","field_publication":"","field_article_url":"","field_event_time":{"event_time_start":"2021-04-09T13:00:00-04:00","event_time_end":"2021-04-09T15:00:00-04:00","event_time_end_last":"2021-04-09T15:00:00-04:00","gmt_time_start":"2021-04-09 17:00:00","gmt_time_end":"2021-04-09 19:00:00","gmt_time_end_last":"2021-04-09 19:00:00","rrule":null,"timezone":"America\/New_York"},"extras":[],"groups":[{"id":"221981","name":"Graduate Studies"}],"categories":[],"keywords":[{"id":"100811","name":"Phd Defense"}],"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":"174045","name":"Graduate students"},{"id":"78751","name":"Undergraduate students"}],"affiliations":[],"classification":[],"areas_of_expertise":[],"news_and_recent_appearances":[],"phone":[],"contact":[],"email":[],"slides":[],"orientation":[],"userdata":""}}}