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Effects of loading rate on the deformation and cracking of dental multilayers: Experiments and models

Published online by Cambridge University Press:  01 April 2006

Xinrui Niu  and
Wole Soboyejo
Xinrui Niu*
Affiliation:
Princeton Institute of Science and Technology of Materials (PRISM) and the Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, New Jersey, 08544
Wole Soboyejo
Affiliation:
Princeton Institute of Science and Technology of Materials (PRISM) and the Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, New Jersey, 08544
*
a) Address all correspondence to this author. e-mail: [email protected]
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Abstract

The paper presents the results of combined experimental, analytical, and computational studies of contact-induced deformation and cracking in dental multilayers. These include studies of individual layers and composite structures that consist of tri-layers of glass bonded to ceramic-filled polymer foundation with an acrylate-based join material. Loading-rate-dependent Young's moduli of the join and foundation materials were obtained from monotonic compression tests. Critical loads were also determined for the tri-layers from Hertzian contact tests at different loading rates. The fracture onset (sub-surface radial cracking) was detected using an in situ telescope. The measured rate-dependent Young's moduli were then incorporated into a finite element model that was used to predict the rate-dependent critical loads in the tri-layer system. Finally, the paper shows that the observed loading rate-dependence of the critical load (for radial cracking) is due to the combined effects of slow crack growth in glass and rate-dependent Young's moduli in the join and foundation layers.

Keywords

FractureLayeredStress/strain relationship
Type
Articles
Information
Journal of Materials Research , Volume 21 , Issue 4 , April 2006 , pp. 970 - 975
Copyright
Copyright © Materials Research Society 2006

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References

REFERENCES

1.Lee, C., Kim, D.K., Sanchez, J., Miranda, P., Pajares, A., Lawn, B.R.: Rate effects in critical loads for radial cracking in ceramic coatings. J. Am. Ceram. Soc. 85, (8), 2019 (2002).Google Scholar
2.Huang, M., Niu, X., and Soboyejo, W.O.: Creep induced rate effects on radial cracks in multilayered structure. J. Mater. Sci.: Mater. Medi., special issue (in press).Google Scholar
3.Dabbs, T.P., Lawn, B.R., Kelly, P.L.: A dynamic fatigue study of soda-lime and borosilicate glasses using small-scale indentation flaw. Phys. Chem. Glasses 23(2), 58 (1982).Google Scholar
4.Wiederhorn, S.M. Subcritical crack growth in ceramics, in Fracture Mechanics of Ceramics, Vol. 2, edited by Bradt, R.C., Lange, F.F., and Hasselman, D.P.H. (Plenum, New York, 1974), p. 613.CrossRefGoogle Scholar
5.Lawn, B.R., Lee, K.S., Chai, H., Pajares, A., Kim, D.K., Wuttiphan, S., Peterson, I.M., Hu, X.: Damage-resistant brittle coatings. Adv. Eng. Mater. 2(11), 745 (2000).3.0.CO;2-E>CrossRefGoogle Scholar
6.Chai, H., Lawn, B.R., Wuttiphan, S.: Fracture modes in brittle coating with large interlayer modulus mismatch. J. Mater. Res. 14, 3805 (1999).CrossRefGoogle Scholar
7.Rhee, Y.W., Kim, H.W., Deng, Y., Lawn, B.R.: Contact-induced damage in ceramic coatings on compliant substrates: Fracture mechanics and design. J. Am. Ceram. Soc. 18, 1066 (2001).CrossRefGoogle Scholar
8.Chai, H., Lawn, B.R.: Role of adhesive interlayer in transverse fracture of brittle layer structures. J. Mater. Res. 15, 1017 (2000).Google Scholar
9.Timoshenko, S., Woinowsky-Krieger, S.: Theory of Plates and Shells 2nd ed. (McGraw-Hill, New York, 1959).Google Scholar