Machines. Technologies. Materials.
Vol. 13 (2019), Issue 1, pg(s) 53-59

Crack resistance evaluation for Al+3.5% Mg alloys by measurments of ultrasonic velocities and hardness

  • 1 Institute of Mechanics - BAS, Sofia, Bulgaria
  • 2 Institute of Metal Science, Eqipment, and Technologies - BAS,Sofia, Bulgaria

Abstract

The crack resistance in fracture mechanics is defined as critical value of stress intensity factor in the plane-strain fracture toughness. A mechanical test is used to assess it under certain conditions. This is a complicated, long and expensive procedure. In practice, it is of interest to determine the crack resistance for construction elements by means non-destructive evaluations (NDE).

Keywords

References

  1. Georgiev M., Ju. Simonov, Crack resistance in Fe-C alloys, BULVEST 2000, Sofia, 2011. /in Bulgarian/.
  2. Kernshtein I.M., &, Fundamentals of experimental fracture mechanics, Moscow University, Moscow, 1989. /in Russian/.
  3. Selivanov V.V, Fracture mechanics for solid bodies, Moscow, State Technical University "Bawman", 2006. /in Russian/ .
  4. Hellan K., Introduction to Fracture Mechanics, Mc-Graw - Hall Book Company, New York, 1984.
  5. Siratori M.,T.Meysi, H.Micusyta, Computational fracture mechanics, MIR,Moscow,1986./in Russian/
  6. Malkin J., Tetelman A.S. Relation between KIC and microscopic strength for low alloy steels, Engng. Fract. Mech. – 1971.V. 3. № 2. ,р.151–167.
  7. Andreykiv А.Е., Spatial tasks in the theory of cracks, Naukova dumka, Kiev, 1982. /in Russian/ .
  8. Armstrong R.W, Hall-Petch relationship use in characterizing Properties of Aluminum and Aluminum Alloys, In Encyclopedia of Aluminum and it Alloys; G.E. Totton and M. Tiryakioglu, editors; Taylor&Francis Group Publishers, U.K., 2016.
  9. Trefilov V.I. In: Deformation strengthen and destruction of polycrystalline materials, Kiev, Naukova dumka, 1987. /Russian/ .
  10. Markovitc, M.P, Non-samples methods for determining the mechanical properties of metals, MPEI, Moscow, 1983. /in Russian/ .
  11. Forsythe G.E. &, Computer Methods for Mathematical Computations, Prentice-Hall Inc. New York , 1977.
  12. G.R.Irwin. Crack-Extension Force for a Part-Through Crack in a Plate, Journal of Applied Mechanics, Vol. 29(4), 651 - 654, 1962. DOI: 10.1115/1.3640649.
  13. J. C. Newman and I. S. Raju. An empirical stress-intensity factor equation for the surface crack. Engineering Fracture Mechanics, 15(1):185–192, January 1981. doi: 10.1016/0013-7944(81)90116-8.

Article full text

Download PDF