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UID:DSC-23045
DTSTART;TZID=Europe/Berlin:20260914T130000
SEQUENCE:1789364279
TRANSP:OPAQUE
DTEND;TZID=Europe/Berlin:20260914T140000
URL:https://www.dresden-science-calendar.de/calendar/de/detail/23045
LOCATION:IPF\, Hohe Straße 601069 Dresden
SUMMARY:Multiaxial Fracture of Elastomers: Energetic Criteria and Biaxialit
 y-Controlled Structural Transformations
CLASS:PUBLIC
DESCRIPTION:Speaker: n.n.\nInstitute of Speaker: \nTopics:\nPhysik\, Chemie
 \, Materialien\n Location:\n  Name: IPF (Conference Hall )\n  Street: Hohe
  Straße 6\n  City: 01069 Dresden\n  Phone: \n  Fax: \nDescription: Elasto
 mer fracture is often described by a critical energy release rate from uni
 axial tests\, but its relevance under multiaxial loading and evolving micr
 ostructure is unclear. We quantify crack-growth onset in biaxially stretch
 ed sheets using energetic analysis and near-tip deformation measurements. 
 For elastic elastomers without deformation-induced structural evolution\, 
 cracks initiate at a material-specific critical energy release rate indepe
 ndent of biaxiality. Strain-induced crystallizing elastomers such as natur
 al rubber break this universality. Their response is controlled by a biaxi
 ality-dependent transition near the crack tip: below a critical deformatio
 n state\, crystallization stays confined and adds little resistance\; abov
 e it\, crystallization spreads around the tip\, reinforcing the material a
 nd increasing crack-opening displacement and critical energy release rate.
  Thus\, fracture resistance is no longer an intrinsic material constant\, 
 but set by the crystallized zone\, guiding robust elastomer design includi
 ng tires\, soft robotics\, and biomedical devices.
DTSTAMP:20260921T083753Z
CREATED:20260721T053618Z
LAST-MODIFIED:20260914T053759Z
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