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CATEGORIES:Wolfson Research Event 2016
SUMMARY:A Design Tool for Micro-Architected Adhesive Joint
 s - Kevin Maloney – Doctoral Researcher\, Departme
 nt of Engineering\, Wolfson College
DTSTART;TZID=Europe/London:20160304T143000
DTEND;TZID=Europe/London:20160304T144000
UID:TALK64987AThttp://talks.cam.ac.uk
URL:http://talks.cam.ac.uk/talk/index/64987
DESCRIPTION:Adhesive joints offer several advantages over trad
 itional joints (welds\, rivets)\, including reduce
 d weight\, excellent surface finish and the abilit
 y to bond dissimilar materials (i.e. metal to poly
 mer).  Adhesive technology is particularly relevan
 t to applications incorporating lightweight materi
 als such as composites and aluminium\, which are o
 f increasing interest in the transportation indust
 ry. Adhesives are finding applications in the nava
 l industry\, but adoption is limited by an incompl
 ete understanding of the mechanics of adhesive joi
 nts. How do failure strength\, toughness and damag
 e tolerance vary with the thickness of an adhesive
  layer? Can these properties be improved\, or vari
 ed to meet specific design requirements? To addres
 s these questions\, a variety of quasi-static test
 s have been conducted on adhesive joints composed 
 of aluminium and a rubber-like MS-polymer adhesive
 . Butt joints and double-lap shear joints were stu
 died and the observed failure mechanisms are discu
 ssed. Joints with novel interface geometries\, suc
 h as “square wave” periodic interlocking interface
 s\, have also been studied. A design tool has been
  developed which predicts the peak strength and wo
 rk of fracture of square wave interfaces as functi
 ons of geometric parameters. A performance map is 
 presented\, which can be used to guide the design 
 of future interfaces according to design requireme
 nts.
LOCATION:Lee Hall\, Wolfson College
CONTACT:Francisco Orozco
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