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DTSTAMP:20260825T180541Z
UID:https://www.mpie.de/events/3586/3755656
DTSTART:20151117T121500Z
DTEND:20151117T130000Z
CLASS:PUBLIC
CREATED:20151119T121152Z
DESCRIPTION:The lifetime of aerospace engineering components is often limit
 ed by fatigue. Traditional management strategies presuppose an existing de
 fect length and estimate time to failure through short crack growth and pr
 opagation methods\, using empirical approaches such as fitting of a Paris
 ’ law. New advances in material processing and production render this ar
 gument insufficient to exploit tackle the next generation clean and well-e
 ngineered materials\, as these growth based empirical studies are too cons
 ervative for effective engine management. In this talk\, I will outline ou
 r recent work focussing on exploiting the next generation of characterisat
 ion tools\, such as high (angular) resolution electron backscatter diffrac
 tion\, high (spatial) resolution digital image correlation\, combined with
  geometrically faithful and relatively simple (i.e. limited free parameter
 s) lengthscale based crystal plasticity approaches. These have been brough
 t to bear on a experimental and modelling campaign that focusses on tracki
 ng deformation and damage accumulation in single\, directionally solidifie
 d\, polycrystalline and polycrystalline Ni-superalloys with inclusions. In
  this talk I will outline some highlights from this body work which includ
 e: a comparison of ability of HR-DIC and HR-EBSD to recover components of 
 the deformation tensor\; understanding accumulated damage and the onset of
  cracking near non-metallic inclusions\; and predicting and understanding 
 accumulated slip in fatigue.\nSpeaker: Dr. Ben Britton
LAST-MODIFIED:20180214T113530Z
LOCATION:Max-Planck-Institut für Eisenforschung GmbH\, Room: Seminar Room 
 1
ORGANIZER;CN=Prof. Gerhard Dehm   :mailto:
SUMMARY:Understanding fatigue crack initiation in Ni superalloys: a study w
 ith HR-EBSD\, HR-DIC and CP-FEA
URL;VALUE=URI:https://www.mpie.de/events/3586/3755656
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