A study on ductile fracture

Title

A study on ductile fracture

 Author

Broek, D.

Institution

National Aerospace Laboratory NLR

 Date

1971-02-10

 Abstract

Electron microscopical examination of fracture surfaces and micro-structure of thirteen different aluminium alloys revealed that ductile rupture is initiated at small inclusions. The average dimple spacing is equal to the average inclusion distance. Void initiation is probably the critical event in ductile fracture; it is immediately followed by spontaneous growth and coalescence of the voids. A dislocation model is developed compatible with this point of view. Evaluation of this dislocation model yields a relation between the fracture strain and the volume fraction of the inclusions. The analysis also leads to a relation between the fracture toughness and the structural parameters.

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 Publisher

Nationaal Lucht- en Ruimtevaartlaboratorium

 Access restriction

Campus only

 Source

NLR-TR 71021 U

 Part of collection

Aerospace Engineering Reports

 Document type

report

 Rights

(c) 1971 National Aerospace Laboratory NLR
Files
PDF NLR_TR_71021_U.pdf 41.78 MB
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