“Palmqvist method”的意思、由来-开放百科全书

词条

Palmqvist method

释义

Approach
Notes

Materials testing
Palmqvist method
Determined crack lengths from a Vickers indention.
Technical information
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Searched property	Fracture toughness
Year developed	1962^[1]
Practical use	Determination of the fracture toughness for cemented carbides.
Website ISO-standard	ISO 28079:2009, Palmqvist toughness test

The Palmqvist method, or the Palmqvist toughness test, (after Sven Robert Palmqvist) is a common method to determine the fracture toughness for cemented carbides. In this case, the materials fracture toughness is represented by the critical stress intensity factor K_IC.^[2]

Approach

The Palmqvist-method uses the lengths of the cracks from a number of Vickers indentions to determine the fracture toughness.^[2] The critical stress intensity factor is then given by:

with the unit .

Notes

1. ^S. Palmqvist, Occurrence of crack formation during Vickers indentation as a measure of the toughness of hard materials, Arch Eisenhuettenwes, 33 (1962) 629-333.
2. ^¹Detta är hårdmetall {{webarchive|url=https://web.archive.org/web/20160127040808/http://www2.sandvik.com/sandvik/0130/HI/SE03411.nsf/7a5364adb7735b05412568c70034ea1b/4c7827530abfa4e1c1256b0a0034cc36/%24FILE/ATT7Q52S/9100 |date=2016-01-27 }}, Digital compendium - Sandvik, (in Swedish), Retrieved 22 January 2016

1 : Materials testing

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