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X-WR-CALNAME:Engineering Seminar: 4-D Printing and Functional Grading via M
 etal Additive Manufacturing
X-WR-TIMEZONE:Central Time (US & Canada)
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DTSTAMP:20260913T055317Z
UID:tag:localist.com\,2008:EventInstance_43950551670164
DTSTART:20230915T180000Z
DTEND:20230915T190000Z
DESCRIPTION:Dr. Ibrahim Karaman\, Chevron Professor and Head of Materials S
 cience and Engineering Department at Texas A&M University will give a semi
 nar titled "4-D Printing and Functional Grading via Metal Additive Manufac
 turing" to the interested faculty and students at Discovery Park.\n\n \n\n
 Abstract\n\nThe flexibility brought about by additive manufacturing (AM) g
 oes beyond the ability to produce components of otherwise excessively comp
 lex geometries. One of the most attractive capabilities of AM is its poten
 tial to produce parts/components with engineered local properties. 4D Prin
 ting\, for example\, enables the fabrication of complex objects––built
  generally from shape memory polymers and (reversibly-swelling) hydrogels 
 that transform over time when subject to external stimuli. Similarly\, res
 earch on Functionally Graded Materials focuses on the spatial tailoring of
  the properties of the fabricated part by controlling feedstock and/or pro
 cess conditions. However\, 4D Printing has never been achieved in metals a
 nd alloys to the best of our knowledge. Moreover\, the combination of 4D p
 rinting and functional grading has not been attempted. Recently\, we combi
 ned these two state-of-the-art techniques to control the voxel level prope
 rties in stimuli-responsive metals. In particular\, we exploit the extreme
  sensitivity of the mechanical and functional response of NiTi shape memor
 y alloys (SMAs) to composition and microstructure––facilitated in turn
  by local process control in AM––to enable the design of new parts wit
 h completely different mechanical responses at different locations\, and c
 apable of actuating at different temperatures in a single monolithic struc
 ture. In this talk\, we introduce 4D printing and its application to NiTi 
 and NiTiHf SMAs and beyond. We further discuss the application of AM NiTi 
 as a sensory material for exploring microstructure-related variability in 
 metallic AM processes. Finally\, we will discuss the simultaneous AM of di
 ssimilar materials and functional grading from one material to another wit
 hout forming detrimental phases.\n\n \n\nBiography\n\nIbrahim Karaman is t
 he Chevron Professor and Department Head of Materials Science and Engineer
 ing at Texas A&M University. He received his Ph.D. from the University of 
 Illinois at Urbana-Champaign in Mechanical Engineering in 2000. He joined 
 the faculty of the Department of Mechanical Engineering at Texas A&M Unive
 rsity in 2000. He served as the Chair of the Interdisciplinary Graduate Pr
 ogram in Materials Science and Engineering (MSEN) from 2010 to 2013. The M
 SEN program became a new department in 2013\, where Dr. Karaman serves as 
 the inaugural head since 2013. His main research interests are processing-
 microstructure-mechanical/functional property relationships in metallic ma
 terials and composites including 1) ultrafine and nanocrystalline material
 s\, and 2) conventional\, high temperature and magnetic shape memory alloy
 s\; micro-mechanical constitutive modeling of crystal plasticity\; twinnin
 g and martensitic phase transformation. He utilizes advanced processing te
 chniques such as metal additive manufacturing\, severe plastic deformation
 \, spark plasma sintering\, and conventional thermomechanical processing t
 o design the microstructure of metallic alloys. Dr. Karaman received sever
 al national and international awards including the NSF CAREER Award\, ONR 
 Young Investigator Award\, The Robert Lansing Hardy Award from The Mineral
 s\, Metals and Materials Society (TMS)\, an Honorable Mention for the Earl
 y Career Faculty Fellow Award from TMS\, Gary Anderson Early Achievement A
 ward from ASME and AIAA\, and TMS 2018 Brimacombe Medalist. He is the Fell
 ow of ASM International. He is an author or co-author of over 350 refereed
  journal articles\, and 8 patents\, 2 of which are licensed by two start-u
 p companies.
GEO:33.253134;-97.148579
LOCATION:Discovery Park Building\, E264
SUMMARY:Engineering Seminar: 4-D Printing and Functional Grading via Metal 
 Additive Manufacturing
URL;VALUE=URI:https://calendar.unt.edu/event/ES_202309151300
CATEGORIES:Lectures & Speakers
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