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Fracture of epoxies subjected to uniaxial and triaxial stress fields
Luleå tekniska universitet.
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.ORCID-id: 0000-0003-0630-2037
1994 (Engelska)Ingår i: Deformation, yield and fracture of polymers: 9th International conference : Papers, Institute of Materials , 1994Konferensbidrag, Publicerat paper (Refereegranskat)
Abstract [en]

The uniaxial fracture properties of dogbone specimens are often used to estimate the performance of polymers in other loading situations, e.g. composite matrices. Although triaxial stress states are likely to affect the fracture behavior, this effect is difficult to quantify. In the present study, a method previously used for rubbers (the poker-chip method) was used to subject epoxies to a triaxial tension stress field. The method was successfully used and its validity supported by stress analysis and fractography. Results showed the fracture behavior of the poker-chip specimen to be dramatically different compared to the uniaxial case. A general decrease in strain to failure was observed for the triaxial test data. Yield criteria, shown to predict yielding in epoxies for biaxial stress states, suggest some other mechanism to control failure of the poker-chip specimen

Ort, förlag, år, upplaga, sidor
Institute of Materials , 1994.
Nationell ämneskategori
Kompositmaterial och -teknik
Forskningsämne
Polymera konstruktionsmaterial
Identifikatorer
URN: urn:nbn:se:ltu:diva-30899Lokalt ID: 4e2acf70-c845-11dd-941d-000ea68e967bOAI: oai:DiVA.org:ltu-30899DiVA, id: diva2:1004128
Konferens
Deformation, yield and fracture of polymers : 11/04/1994 - 15/04/1994
Anmärkning
Godkänd; 1994; 20081212 (andbra)Tillgänglig från: 2016-09-30 Skapad: 2016-09-30 Senast uppdaterad: 2018-06-14Bibliografiskt granskad

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Asp, Leif

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Totalt: 84 träffar
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