Tensile strength and fracture surface characterisation of sized and unsized glass fibers
Rent the article at a discountRent now
* Final gross prices may vary according to local VAT.Get Access
The tensile strength of commercial glass fibers is examined by single fiber tensile tests. The fibers are analysed as received from the manufacturer (sized) and after a heat treatment at 500∘C (unsized). Weibull plots of the two series are used for comparison of the strengths of the sized and unsized fibers. It is shown that large sample sizes (over 60 tests) are required to lead to a reliable two-parameter Weibull distribution. The experimental tests clearly indicated that the unsized fibers were weaker in the low strength range, but had similar strength in the high strength range. An investigation of the fracture surfaces in the SEM showed distinct differences in the fracture patterns for high and low strength fibers. Fracture mechanics were applied to estimate the original flaw size and relate the observed fracture mirror surface to the fiber strength. Based on the observation of surface flaws, a “healing” mechanism by the sizing is considered likely for this type of fiber and sizing, thereby effectively increasing the strength of the fiber in the presence of larger surface flaws.
- W. WEIBULL, The Royal Swedish Institute for Engineering Research, Stockholm, 1939, No. 151.
- P. ZINCK, M. F. PAYS, R. REZAKHANLOU and J. F. GERARD, J. Mat. Sci. 34 (1999) 2121.
- T. H. CHENG, F. R. JONES and D. WANG, Comp. Sci. Techn. 48 (1993) 89.
- F. M. ZHAO and N. TAKEDA, Comp. Part A. 31 (2000) 1203.
- P. ZINCK, E. MAEDER and J. F. GERARD, J. Mat. Sci. 36 (2001) 5245.
- S. FEIH, J. WEI, P. K. KINGSHOTT and B. F. SOERENSEN, Comp. Part A 36 (2005) 245.
- P. K. GUPTA, in “Fibre Reinforcements for Composite Materials,” edited by A. R. Busnell (Elsevier Science Publishers A.V., 1988) p. 19.
- S. M. WIEDERHORN, J. Am. Ceram. Soc. 50 (1967) 407.
- E. B. SHAND, ibid. 42 (1959) 474.
- J. J. MECHOLSKY, R. W. RICE and S. W. FREIMAN, ibid. 57 (1974) 440.
- R. J. CASTILONE, G. S. GLAESEMAN and T. A. HANSON, in Proceedings of SPIE 4639 on Optical Fiber and Fiber Component Mechanical Reliability and Testing II, 2002, p. 11.
- M. D. THOULESS, O. SBAIZERO, L. S. SIGL and A. G. EVANS, J. Am. Ceram. Soc. 72 (1989) 525.
- E. CENDRE, S. FEIH and M. STAMPIONI, in “PSI Scientific Report,” (2003) Vol. VII, p. 56.
- H. W. COLEMAN and W. G. STEELE, in “Experimentation and Uncertainty Analysis for Engineers” (John Wiley and Sons, Inc., 1999) p. 54.
- A. KHALILI and K. KROMP, J. Mat. Sci. 26 (1991) 6741.
- D. WANG and F. R. JONES, Surf. Interf. Anal. 20 (1993) 457.
- H. ISHIDA, S. NAVIROJ, S. K. TRIPATHY, J. J. FITZGERALD and J. L KOENIG, J. Pol. Sci. Part B. 20 (1982) 701.
- S. M. WIEDERHORN, J. Am. Ceram. Soc. 52 (1969) 99.
- D. A. KROHN and D. P. H. HASSELMAN, ibid. 54 (1971) 411.
- W. T. KOITER, J. Appl. Mech. 32 (1965) 237.
- A. LEVAN and J. ROYER, Int. J. Fract. 61 (1993) 71.
- Tensile strength and fracture surface characterisation of sized and unsized glass fibers
Journal of Materials Science
Volume 40, Issue 7 , pp 1615-1623
- Cover Date
- Print ISSN
- Online ISSN
- Kluwer Academic Publishers
- Additional Links
- Industry Sectors