BEGIN:VCALENDAR VERSION:2.0 PRODID:icalendar-ruby CALSCALE:GREGORIAN X-WR-CALNAME:Understanding the High Cycle Fatigue of Additively Manufacture d Metallic Materials X-WR-TIMEZONE:Central Time (US & Canada) BEGIN:VEVENT DTSTAMP:20260814T192421Z UID:tag:localist.com\,2008:EventInstance_44871531546084 DTSTART:20231129T213000Z DTEND:20231129T223000Z DESCRIPTION:You're invited to a seminar with Dr. Shuai Shao\, an Associate Professor of Mechanical Engineering at Auburn University\, titled "Underst anding the High Cycle Fatigue of Additively Manufactured Metallic Material s."\n\nAbstract: The uncertainties surrounding the fatigue\, especially hi gh cycle fatigue (HCF)\, of additively manufactured (AM) metallic material s have been a major roadblock for their adoption in the safety-critical\, structural applications. Even in the fully machined and polished condition \, the HCF life of these materials is not only often inferior to their wro ught counterparts but also exhibits significantly more scatter\, making th e prediction of fatigue life a challenge. This behavior originates from th e unique micro-/defect-structural characteristics of AM materials\, strong ly influencing the initiation of fatigue cracks\, which constitutes a majo r fraction of the total life. While many reports in the literature highlig ht the detrimental role of volumetric defects\, including gas-entrapped po res\, key holes\, and lack-of-fusion defects\, the fatigue of AM materials is much more complex. On one hand\, the fatigue failure of certain AM mat erials in machined surface condition\, such as Ti-6Al-4V\, can almost alwa ys be traced back to one or a group of volumetric defects. On the other ha nd\, the fatigue crack initiation of some other AM alloys\, such as Incone l 718\, is known to be less sensitive to the presence of defects. For defe ct-sensitive materials\, the size\, shape\, and location of volumetric def ects may\, to a large degree\, dictate the initiation of fatigue cracks an d therefore the fatigue life. For defect-insensitive ones\, fatigue failur e is often seen to initiate from microstructural features\, such as those leading to the operation of persistent slip bands. Accordingly\, this talk is divided into two parts and presents knowledge recently generated by th e National Center for Additive Manufacturing Excellence (NCAME) regarding the HCF behavior of these two material classes\, with emphasis on Ti-6Al-4 V and Inconel 718.\n\nBiography: Dr. Shuai Shao received his Ph.D. in Mech anical Engineering from Washington State University in 2012. He worked in the Los Alamos National Laboratory as a post-doc for over three years afte r graduation. In Feb 2016\, Dr. Shao joined the Center for Advanced Vehicu lar Systems (CAVS) at Mississippi State University as a post-doc\, where h e acquired his current research interest in additive manufacturing. In Jan 2017\, he joined the Department of Mechanical and Industrial Engineering of Louisiana State University as an assistant professor. Since Fall 2019\, he has been an Associate Professor and subsequently a tenured Associate P rofessor of Mechanical Engineering at Auburn University\, where he is also a core faculty member of NCAME. Dr. Shao’s overall research theme conce rns with understanding the role of generalized defects (including both man ufacturing-induced and crystallographic) in the deformation and degradatio n of metallic materials\, especially the ones fabricated via advanced manu facturing technologies. Over his academic career of 6 years\, he has autho red/co-authored 100+ peer-reviewed articles in prestigious journals and bo ok chapters\, which have resulted in 3600+ citations. He has been actively organizing scientific symposia at international conferences including TMS \, MS&T\, and ASTM ICAM. He has served/is serving as the PI and Co-PI of m ultiple research projects funded by DOE\, NASA\, NSF\, DOD\, NIST\, and FA A. Most of his research activities focus on understanding and modeling syn ergistic effects of microstructure and defects on the deformation and degr adation of additively manufactured metallic materials. He has been privile ged to serve on the proposal review panels and as a reviewer for several n ational and international agencies\, including NSF\, Swiss National Scienc e Foundation\, and Austrian Science Fund. Notable awards won by Dr. Shao i nclude “2023 Auburn Alumni Engineering Council Research Awards for Excel lence (Senior Category)”\, “2020 ASTM Additive Manufacturing Young Pro fessional Award”\, “2019 LSU Mechanical Engineering Outstanding Teache r Award”\, and “2019 LSU Alumni Association Faculty Research Award.” GEO:37.954213;-91.774099 LOCATION:Toomey Hall\, 140 SUMMARY:Understanding the High Cycle Fatigue of Additively Manufactured Met allic Materials URL;VALUE=URI:https://calendar.mst.edu/event/seminar_by_dr_shuai_shao_from_ auburn_university CATEGORIES:Lectures & Conferences END:VEVENT END:VCALENDAR