TU Darmstadt / ULB / TUbiblio

Crack opening displacements of Vickers indentation cracks

Fett, Theo and Kounga Njiwa, Alain Brice and Rödel, Jürgen (2005):
Crack opening displacements of Vickers indentation cracks.
72, In: Engineering Fracture Mechanics, (5), pp. 647-659, ISSN 00137944, [Online-Edition: http://dx.doi.org/10.1016/j.engfracmech.2004.07.003],
[Article]

Abstract

Vickers indentation cracks are an appropriate tool to determine the crack-tip toughness KI0 and, possibly, the bridging relation of ceramics with an R-curve behaviour from the total crack opening displacements. Two contributions to the total crack opening displacement field are addressed. First, the residual stresses occurring in the uncracked body are considered and then, the contact stresses generated by preventing crack face penetration are computed. The COD solution resulting from the superposition of residual and contact displacements is given and an analytical expression is provided. Near-tip displacements are represented by the first terms of series expansions. As an example of application, an evaluation of the actual stress intensity factor is presented for a window glass 1 h after Vickers indentation.

Item Type: Article
Erschienen: 2005
Creators: Fett, Theo and Kounga Njiwa, Alain Brice and Rödel, Jürgen
Title: Crack opening displacements of Vickers indentation cracks
Language: English
Abstract:

Vickers indentation cracks are an appropriate tool to determine the crack-tip toughness KI0 and, possibly, the bridging relation of ceramics with an R-curve behaviour from the total crack opening displacements. Two contributions to the total crack opening displacement field are addressed. First, the residual stresses occurring in the uncracked body are considered and then, the contact stresses generated by preventing crack face penetration are computed. The COD solution resulting from the superposition of residual and contact displacements is given and an analytical expression is provided. Near-tip displacements are represented by the first terms of series expansions. As an example of application, an evaluation of the actual stress intensity factor is presented for a window glass 1 h after Vickers indentation.

Journal or Publication Title: Engineering Fracture Mechanics
Volume: 72
Number: 5
Uncontrolled Keywords: Crack opening profile; Crack tip toughness; Residual stresses; Vickers crack
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Nonmetallic-Inorganic Materials
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences
Date Deposited: 18 May 2011 15:19
Official URL: http://dx.doi.org/10.1016/j.engfracmech.2004.07.003
Identification Number: doi:10.1016/j.engfracmech.2004.07.003
Export:
Suche nach Titel in: TUfind oder in Google
Send an inquiry Send an inquiry

Options (only for editors)

View Item View Item