Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
권호 표지

The Effects of Sealing Materials in Cone Crack Formation of Soda-lime Glass by Ball Impact

볼 충격을 받는 유리의 콘크랙형성에 대한 실링재료의 영향

  • 김문생 (부산대학교 기계공학부) ;
  • 허진 (부산대학교 대학원 기계설계공학과) ;
  • 이현철 (두원공과대학 컴퓨터응용설계학과) ;
  • 김호종 (두원공과대학 컴퓨터응용설계학과)
  • Published : 2003.05.01
Download PDF
⟨ Previous Next ⟩

Abstract

In order to investigate the possibility of punching process of brittle material by ball impact, the effects of sealing materials about impact damage of soda-lime glass by small spheres were evaluated experimentally. The using of sealing materials in the development of perfect cone crack was more effective than no using of sealing materials. At the sealing materials condition, in the case of 5mm-thick specimen, Copper and PMMA sealing were more effective in producing a perfect cone formation than the other sealing materials. And in the case of 8mm-thick specimen, Aluminum sealing was most effective in producing a perfect cone formation. The impact velocity range over which perfect cones were formed was influenced by both the thickness of specimen and sealing materials. By a proper selection of sealing materials, the application fur industrial technology for hole (or nozzle) punching process of brittle materials is expected.

Keywords

References

  1. Frank, F. C. and Lawn, B. R., 'On the Theory of Hertzian Fracture,' Proc. R. Coc., Vol. A299, pp. 291-306, 1967
  2. Knight, C. G. K., Swain, M. V. and Chaudhri, M. M., 'Impact of Small Spheres on Glass Surface,' J Mater Sci. Vol. 12, pp. 1573-1586, 1977 https://doi.org/10.1007/BF00542808
  3. Chaudhri, M. M. and Kurkjian, C. R., 'Impact of Small Steel Sphere on the Surfaces of Normal and Anomalous Glasses,' J Am Ceram Soc., Vol. 69, pp. 404-410, 1986 https://doi.org/10.1111/j.1151-2916.1986.tb04769.x
  4. Fields, J. E., Sun, Q. and Townsend, D., 'Ballistic Impact of Ceramic,' Inst Phys Conf Ser, Vol. 102, pp. 387-393, 1989
  5. Persion, J., Breder, K. and Rowcliffe, D. J., 'Loading Rate Effects during Indentation and Impact on Glass with Small Spheres,' J. Mater. Sci., Vol. 28, pp. 6484-6489, 1993 https://doi.org/10.1007/BF01352218
  6. Woo, S. C., Kim, M. S., Shin, H. S. and Lee, H. C., 'Impact Damage on Brittle Materials with Small Spheres(Ⅰ),' Trans KSPE, Vol. 18, No. 11, pp. 93-100, 2001
  7. Kim, M. S., Shin, H. S., Lee, H. C. and Woo, S. C., 'Impact Damage of Brittle Materials by Small Spheres (Ⅱ),' Trans KSME A, Vol. 26, No. 1, pp. 153-159, 2002 https://doi.org/10.3795/KSME-A.2002.26.1.153
  8. Nojima, T. and Sakaguchi, K., 'A Study of Fracture Behaviors in Ceramic Plates by Impact Load and Its Application to Development of Hole-Punching Technique,' Proceeding of the IUTAM Symposium CRHVHRSR, Noda, pp. 233-240, 1995
  9. Nojima, T., Sakaguchi, K., Sugiyama, F., 'Blanking of Engineering Ceramic Plate by Press-Working,' Trans JSME, C-62, pp. 346-352, 1995
  10. Shin, H. S.;Kim, C. H.;Oh, S. Y. Development of Experimental Setup for Impact Punching in Brittle Materials and Analysis of Punching Mechanism Trans KSME A