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Stiffness mapping and calculation of fracture toughness of fused silica

Posted: 02 Aug 2011     Print Version  Bookmark and Share

Keywords:Fracture toughness  Nanoindentation  mechanical behaviour 

The determination of mechanical properties for small volumes of material is becoming increasingly important for many facets of science and technology, both industrial and academic. Nanoindentation equipment from Agilent Technologies has been used in a variety of ways to study the mechanical behaviour of materials. Fracture toughness is an important property that can be evaluated with an Agilent nanoindenter. Fracture toughness, represented by the symbol KIC, is the critical value of the stress-intensity factor at a crack tip necessary to produce catastrophic failure under plane-strain conditions. Lower values of KIC indicate a greater tendency towards catastrophic failure due to a pre-existing flaw.

The Stiffness Mapping method from Agilent Technologies provides a platform for evaluating fracture toughness by nanoindentation.

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