Fracture analysis of dental composites

R. M V Pidaparti, W. A. Boehmer, Mark W Beatty

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Three dental composite materials were tested in three-point bending to determine fracture toughness using the stress intensity factor approach. Finite element analysis was used to model the specimens and the fracture toughness was calculated using the J integral and crack closure methods. The effects of tension, compression, and tension-compression moduli on the fracture toughness are presented and discussed. For each material, the plain strain J integral results were independent of Young's modulus. Crack closure results were found to be very sensitive to the type of mesh used to define the Δa a ratio at the crack tip. The results from J integral and crack closure methods were in good agreement with experimental data for the three dental composites considered.

Original languageEnglish (US)
Pages (from-to)51-59
Number of pages9
JournalEngineering Fracture Mechanics
Volume45
Issue number1
DOIs
StatePublished - Jan 1 1993

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Dental composites
Crack closure
Fracture toughness
Dental materials
Stress intensity factors
Crack tips
Elastic moduli
Finite element method
Composite materials

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials

Cite this

Fracture analysis of dental composites. / Pidaparti, R. M V; Boehmer, W. A.; Beatty, Mark W.

In: Engineering Fracture Mechanics, Vol. 45, No. 1, 01.01.1993, p. 51-59.

Research output: Contribution to journalArticle

Pidaparti, R. M V ; Boehmer, W. A. ; Beatty, Mark W. / Fracture analysis of dental composites. In: Engineering Fracture Mechanics. 1993 ; Vol. 45, No. 1. pp. 51-59.
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