BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Penn Engineering Events - ECPv6.15.18//NONSGML v1.0//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
X-WR-CALNAME:Penn Engineering Events
X-ORIGINAL-URL:https://seasevents.nmsdev7.com
X-WR-CALDESC:Events for Penn Engineering Events
REFRESH-INTERVAL;VALUE=DURATION:PT1H
X-Robots-Tag:noindex
X-PUBLISHED-TTL:PT1H
BEGIN:VTIMEZONE
TZID:America/New_York
BEGIN:DAYLIGHT
TZOFFSETFROM:-0500
TZOFFSETTO:-0400
TZNAME:EDT
DTSTART:20200308T070000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:-0400
TZOFFSETTO:-0500
TZNAME:EST
DTSTART:20201101T060000
END:STANDARD
BEGIN:DAYLIGHT
TZOFFSETFROM:-0500
TZOFFSETTO:-0400
TZNAME:EDT
DTSTART:20210314T070000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:-0400
TZOFFSETTO:-0500
TZNAME:EST
DTSTART:20211107T060000
END:STANDARD
BEGIN:DAYLIGHT
TZOFFSETFROM:-0500
TZOFFSETTO:-0400
TZNAME:EDT
DTSTART:20220313T070000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:-0400
TZOFFSETTO:-0500
TZNAME:EST
DTSTART:20221106T060000
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20210809T120000
DTEND;TZID=America/New_York:20210809T130000
DTSTAMP:20260406T184806
CREATED:20210520T140513Z
LAST-MODIFIED:20210520T140513Z
UID:10006797-1628510400-1628514000@seasevents.nmsdev7.com
SUMMARY:PSOC Webinar: Benjamin Emert & Kuangzheng (Peter) Zhu
DESCRIPTION:Join Zoom Meeting: \nhttps://upenn.zoom.us/j/99334915941?pwd=eDRXV1lITDlySXFyRHUyUzdmRldoQT09 \nMeeting ID: 993 3491 5941 \nPasscode: 189247 \nPSOC@Penn Summer Webinars 2021 \nContact manu@seas.upenn.edu with any questions \nBenjamin Emert 12:00-12:30 PM \nPeter Zhu 12:30-1:00 PM
URL:https://seasevents.nmsdev7.com/event/psoc-webinar-benjamin-emert-kuangzheng-peter-zhu/
LOCATION:https://upenn.zoom.us/j/96715197752
CATEGORIES:Seminar,Doctoral,Graduate,Student,Alumni
ORGANIZER;CN="PSOC":MAILTO:manu@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20210810T103000
DTEND;TZID=America/New_York:20210810T120000
DTSTAMP:20260406T184806
CREATED:20210803T133708Z
LAST-MODIFIED:20210803T133708Z
UID:10006842-1628591400-1628596800@seasevents.nmsdev7.com
SUMMARY:MEAM Seminar: "Accelerated Design of Heterogeneous Materials for Improved Failure Characteristics"
DESCRIPTION:Nature provides countless examples of the use of heterogeneity to enhance the failure properties of materials. Many biological materials\, such as bone\, marine shells\, and fish scales\, are extremely resilient to fracture and failure. These often consist of regions that are highly mineralized and stiff and regions of biopolymers that are extremely soft. In practice\, combining such disparate materials in synthetic systems is fraught with difficulties\, such as poor interfacial adhesion. However\, as we show in our work\, other types of heterogeneities lead to similar enhancements to failure characteristics\, including voids (inspired by bamboo) and spatial variations in fiber orientation (inspired by many materials\, such as aorta). With the rise of 3D printing technology\, it is possible to arbitrarily place materials with spatially-varying microstructure to mimic biological materials\, ultimately with the goal of achieving comparable improvements to failure properties in synthetic materials. \nIn this talk\, I will discuss three different types of heterogeneities that can be easily introduced to enhance failure characteristics. First\, inspired by the microstructure of the Mantis shrimp club\, we show how process defects that are intrinsic to extrusion-based additive approaches (voids and weak interfaces) can be spatially arranged in a helical (Bouligand) pattern to produce complex crack patterns and enhanced energy absorption. Next\, we show how arrangements of voids (inspired by conch shells) can deflect cracks and enhance energy dissipation during fracture. Finally\, we show how spatial variations in fiber orientation (inspired by aorta) can be produced using direct ink writing (DIW)\, leading to soft composites with high toughness and fatigue threshold. \nHeterogeneities in materials\, and the 3D printing processes used to create them\, introduce a large number of parameters into the material design process\, such as infill layer angle\, fiber orientation\, void placement\, etc. Bio-inspiration provides a starting point and some basic intuition about how to design heterogeneous materials for improved failure properties\, but it cannot guarantee optimal failure properties. I will therefore conclude the talk with a discussion of the use of Bayesian optimization for the acceleration of the design of architected heterogeneous materials with optimal failure properties. This will include the use of Bayesian optimization to design optimal architectures for energy dissipation using arrangements of voids inspired by conch shells. The second example uses a multi-fidelity Bayesian optimization approach to accelerate the design of heterogeneous triangular lattices with maximal energy absorption during compressive loading.
URL:https://seasevents.nmsdev7.com/event/meam-seminar-accelerated-design-of-heterogeneous-materials-for-improved-failure-characteristics/
LOCATION:Zoom – Email MEAM for Link\, peterlit@seas.upenn.edu
CATEGORIES:Seminar
ORGANIZER;CN="Mechanical Engineering and Applied Mechanics":MAILTO:meam@seas.upenn.edu
END:VEVENT
END:VCALENDAR