Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
권호 표지

Contact Damage and Fracture of Poreclain/Glass-Infiltrated Alumina Layer Structure for Dental Application

치아 응용을 위한 /유리침윤 알루미나 이중 층상구조의 접촉손상 및 파괴

  • 정연길 (한양대학교 무기재료공학과) ;
  • 여정구 (한양대학교 무기재료공학과) ;
  • 최성설 (한양대학교 무기재료공학과)
  • Published : 1998.12.01
Download PDF
⟨ Previous Next ⟩

Abstract

Hertzian contact tests were used to investigate the evolution of fracturedamage in the coating layer as functions of contact load and coating thickness by studying crack patterns in porcelain on glass-infiltrated alumina bilayer system conceived to simulate the crown structure of a tooth. Cone cracks initiated at the coating top surface without delamination at interface and crack propagation to substrate. Preferentially the cracks made multi-cracks at the coating top surface rather than proceeding to interface. The cracks were highly stabilized with wide ranges between the loads to initiate first cracking and to cause final failure im-plying damage-tolerant capability. Finite element modelling was used to evaluate the stress distribution. Maximum tensile stress were responsible for the cracking at the coating layer and had a profound influence on the crack pattern and fracture damage in the layered structure materials.

Keywords

References

  1. Ann. Rev. Mater. Sci. v.27 Ceramics in Restorative and Prosthetic Dentistry J. R. Kelly
  2. Compendium v.17 no.8 Dental Ceramic Restorative Systems R. A. Giordano
  3. Ph. D. Dissertation Strength and Fracture Toughness of Alumina-Glass Dental Composites Prepared by Melt Infiltration W. D. Wolf
  4. J. Am. Ceram. Soc. v.79 no.3 Crack Suppression in Strongly-Bonded Homogeneous/Heterogeneous Laminates: A Study on Glass/Glass-Ceramic Bilayers S. Wuttiphan;B. R. Lawn;N. P. Padture
  5. J. Mater. Res. v.11 no.1 Damage-Resistant Alumina-Based Layer Composites L. An;H. M. Chan;N. P. Padture;B. R. Lawn
  6. J. Am. Ceram. Soc. v.81 no.3 Contact-Induced Transverse Fiactures in Brittle Layers on Soft Substrates: A Study on Silicon Ntride Bilayers K. S. Lee;S. Wuttiphan;X. Z. Hu;S. K. Lee;B. R. Lawn
  7. J. Am. Ceram. Soc. v.79 no.7 Contact Damage in Plasma-Sprayed Alumina-Based Coating A. Pajares;L. Wei;B. R. Lawn;C. C. Bemdt
  8. J. Dent. Res. v.76 no.66 Effect of Glass-Ceramic Thickness on Hertzian and Bending Stresses During Loading K. J. Anusavice;Y. L. Tsai
  9. J. Dent. Res. Mechanical Characterization of Dental Ceramics Using Hertzian Contacts I. M. Peterson;A. Pajares;B. R. Lawn;V. P. Thompson;E. D. Rekow
  10. J. Am. Ceram. Soc. v.77 no.7 Effect of Grain Size on Hertzian Comtact in Alumina F. Guiberteau F.;N. P. Padture;B R. Lawn
  11. J. Am. Ceram. Soc. v.79 no.10 Stress Analysis of Contact Deformation in Quasi-Plastic Ceramics A. C. Fischer-Cripps;B. R. Lawn
  12. J. Mater. Res. v.11 no.4 Microstructure of a High Strength Alumina Glass Composite H. Homberger;P. M. Marquis;S. Christiansen;H. P. Strunk
  13. Symposium on Dynamic Modulus Measurements The Pulsed Ultrasonic Velocity Method for Determining Material Dynamic Elastic Moduli G. V. Blessing;Wolfenden A.(ed.)
  14. Hardness of Metals D. Tabor
  15. J. Am. Ceram. Soc. v.64 no.19 A Critical Evaluation of Indentation Techniques for Measuring Fracture Toughness: 1. Direct Crack Measurements G. R. Anstis;P. Chantikul;D. B. Marshall;B. R. Lawn
  16. J. Phys. D:Appl. Phys. v.9 Indentation Plasticity and the Ensuing Fracture of Glass M. V. Swain;J. T. Hagan
  17. J. Am. Ceram. Soc. v.79 no.10 Stress Analysis od Elastic-Plastic Contact Damage in Ceramic Coating on Metal Substrates A. C. Fischer-Cripps;B. R. Lawn;A. Pajares;L. Wei
  18. Int. J. Fract. v.44 Behavior of Indentation Cracks Near Free Surfaces and Interfaces T. J. Lardner;J. E. Ritter;M. L. Shiao;M. R. Lin