Journal article
Dynamic fatigue and strength characterization of three ceramic materials
Journal of materials science. Materials in medicine, Vol.18(6), pp.1219-1224
06/2007
DOI: 10.1007/s10856-007-0131-4
PMID: 17277977
Abstract
Fracture strength and fatigue parameters of three ceramic materials submitted to dynamic fatigue were evaluated. A machinable leucite-reinforced dental ceramic, aluminum oxide, and yttria-stabilized zirconia (YSZ) were tested. The inert strength of the materials was determined in air (25 °C) at stressing rates of 70, 250, 400 MPa/s for Porcelain, Alumina and YSZ respectively. The data was analyzed using a two-parameter Weibull distribution. The Weibull modulus (m) and the characteristic of fracture (σ
0) parameters were determined for each material. Specimens were also tested in 3-point bending at different stressing rates in distilled/deionized water at 37 °C (dynamic fatigue) in order to calculate the fatigue parameters n and ln B. The strength for each material was characterized using Strength–Probability–Time (SPT) diagrams for 1 day, 1 year and 10 years. YSZ showed a high-fracture strength σ
0 (1,459 MPa) at a failure probability of 63.2% and high resistance to subcritical crack growth. YSZ and alumina showed better resistance to slow crack growth than porcelain, indicating less susceptibility to strength degradation by stress corrosion. Lifetime predictions after 10 years indicate a reduction of 50%, 36% and 29% in strength for porcelain, alumina and YSZ respectively. YSZ seems to be a very promising material for long-term dental and biomedical applications.
Details
- Title: Subtitle
- Dynamic fatigue and strength characterization of three ceramic materials
- Creators
- Erica Teixeira - School of Dentistry University of North Carolina Chapel Hill NC 27599 USAJeffrey Piascik - RTI International, Center for Materials and Electronic Technologies Research Triangle Park Chapel Hill NC 27709 USABrian Stoner - RTI International, Center for Materials and Electronic Technologies Research Triangle Park Chapel Hill NC 27709 USAJeffrey Thompson - School of Dentistry University of North Carolina Chapel Hill NC 27599 USA
- Resource Type
- Journal article
- Publication Details
- Journal of materials science. Materials in medicine, Vol.18(6), pp.1219-1224
- Publisher
- Kluwer Academic Publishers-Plenum Publishers; New York
- DOI
- 10.1007/s10856-007-0131-4
- PMID
- 17277977
- ISSN
- 0957-4530
- eISSN
- 1573-4838
- Language
- English
- Date published
- 06/2007
- Academic Unit
- Operative Dentistry
- Record Identifier
- 9984065701402771
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