Fett, Theo ; Kounga Njiwa, Alain Brice ; Rödel, Jürgen (2005)
Crack opening displacements of Vickers indentation cracks.
In: Engineering Fracture Mechanics, 72 (5)
doi: 10.1016/j.engfracmech.2004.07.003
Artikel, Bibliographie
Kurzbeschreibung (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.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2005 |
| Autor(en): | Fett, Theo ; Kounga Njiwa, Alain Brice ; Rödel, Jürgen |
| Art des Eintrags: | Bibliographie |
| Titel: | Crack opening displacements of Vickers indentation cracks |
| Sprache: | Englisch |
| Publikationsjahr: | März 2005 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Engineering Fracture Mechanics |
| Jahrgang/Volume einer Zeitschrift: | 72 |
| (Heft-)Nummer: | 5 |
| DOI: | 10.1016/j.engfracmech.2004.07.003 |
| Kurzbeschreibung (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. |
| Freie Schlagworte: | Crack opening profile; Crack tip toughness; Residual stresses; Vickers crack |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Nichtmetallisch-Anorganische Werkstoffe 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften |
| Hinterlegungsdatum: | 18 Mai 2011 15:19 |
| Letzte Änderung: | 05 Mär 2013 09:47 |
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