Procedure for Determining the Crack Resistance Behaviour Using the Instrumented Charpy Impact Test

  • W. Grellmann
  • S. Seidler
  • W. Hesse
Part of the Engineering Materials book series (ENG.MAT.)


The instrumented Charpy impact test is used for determining properties related to the impact strength of plastics. It is an addition to the conventional pendulum impact test described in ISO 179 [1]; it is carried out on razor-blade-notched specimens. The plastics on which it can be used range from brittle thermosets to high-impact polymer blends. Both the load and the deflection signals are recorded, and the impact energy is divided into an elastic and a plastic part. If the requirements on the specimen size and on the notch are satisfied, geometry-independent material parameters can be calculated. These parameters can be used for control and for quality assurance as well as for research and development.


Charpy Impact Test Stable Crack Growth Initial Crack Length Dynamic Fracture Toughness Dynamic Yield Stress 
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  1. 1.
    DIN EN ISO 179: Plastics — Determination of Charpy Impact Properties — Part 1 (2000): Non-Instrumented Impact Test. Part 2 (2000): Instrumented Impact TestGoogle Scholar
  2. 2.
    ASTM E 399 (1990): Standard Test Method for Plane-Strain Fracture Toughness of Metallic Materials. Annual Book of ASTM Standards, Philadelphia Vol. 03. 01Google Scholar
  3. 3.
    Sumpter J. D. G., Turner C. E. (1976): Cracks and fracture. In: ASTM STP 601: 3-18Google Scholar
  4. 4.
    Merkle J. G., Corten H. T. (1974): f-integral analysis for the compact specimen, considering axial force as well as bending effects. J. Pressure Vessel Technol. 96, 4: 286 - 292Google Scholar
  5. 5.
    Hoffmann H., Grellmann W., Zilvar V. (1986): Instrumented impact studies of some thermoplastic composites. In: 28th Microsymposium on Macromolecules and Polymer Composites, Prague, July 1985. Walter de Gruyter, Berlin, New York: 233 - 242Google Scholar
  6. 6.
    Grellmann W., Jungbluth M. (1987): Application of the crack-opening displacement concept for determining geometry-independent fracture mechanical parameters in the instrumented Charpy impact Test. In: Fracture Mechanics, Micromechanics and Coupled Fields (FMC) Series No. 37, Institut fir Mechanik, Berlin, Chemnitz: 186 - 192Google Scholar
  7. 7.
    Grellmann W. (1982): Problems and results of instrumented Charpy impact test of polymers. In: Fracture Mechanics, Micromechanics and Coupled Fields (FMC) Series, No. 3, Institut fur Mechanik, Berlin, Chemnitz: 102 - 111Google Scholar
  8. 8.
    Grellmann W. (1982): Problems to investigate fracture loads and inertial forces for the determination of dynamic fracture toughness of polymers. In: Fracture Mechanics, Micro-mechanics and Coupled Fields (FMC) Series, No. 3, Institut für Mechanik, Berlin, Chemnitz: 142 - 151Google Scholar
  9. 9.
    Grellmann W., Sommer J.-P., Hoffmann H., Michel B. (1987): Application of different J-integral evaluation methods for a description of toughness properties of polymers. In: Proceedings of the 1st Conference on Mechanics, Prague, Czech, June 29-July 3, Vol. 5: 129 - 133Google Scholar
  10. 10.
    Grellmann W, Che M. (1997): Assessment of temperature-dependent fracture behavior with different fracture mechanics concepts on example of unoriented and cold-rolled polypropylene. J. Appl. Polym. Sci. 66: 1237-1249Google Scholar
  11. 11.
    Grellmann W., Seidler S. (1991): Application of ESIS-procedure for determining the fracture resistance of plastics. In: Proceedings of the 10th Congress on Material Testing, Budapest, Hungary, October 7-11, Vol. II: 385 - 390Google Scholar
  12. 12.
    Seidler S., Grellmann W. (1999): Determination of geometry independent J-integral values on tough polymers. Int. J. Fracture, Lett. Fract. Micromech. 96: 117-122Google Scholar
  13. 13.
    Grellmann W., Seidler S., Bierögel C. (1997): Geometry-independent fracture mechanics values as a requirement for toughness optimization of polymers. In: Proceedings of the 9th International Conference on Fracture (ICF 9), Sydney, Australia, April 1-5, Vol. 2: 1013 - 1020Google Scholar
  14. 14.
    Seidler S., Grellmann W (1995): Application of the instrumented impact test to the toughness characterization of high impact thermoplastics. Polym. Test. 14: 453-469Google Scholar
  15. 15.
    Sunderland P., Kausch H. H. (1988): The application of fracture mechanics to the impact behaviour of rubber-toughened polyamides. Macromol. Chem., Macromol. Symp. 16: 365-378Google Scholar
  16. 16.
    Savadori A., Bramuzzo M., Marega C. (1984): J integral analysis of ductile fracture of PP/EP rubber blends. Polym. Test. 4: 73-89Google Scholar
  17. 17.
    Grellmann W., Seidler S., Schierjott U., Rufke B. (1988): Anordnung zur Bestimmung des JTJ-gesteuerten Rißwachstums bei schlagartiger Beanspruchung. German Patent DD 275 - 113Google Scholar
  18. 18.
    Standard Draft ESIS TC 4 (1995): A Testing Protocol for Conducting J-Crack Growth Resistance Curve Tests on PlasticsGoogle Scholar
  19. 19.
    Pavan A. (1998): ESIS TC 4 activity on high rate testing of plastics. In: Proceedings of the 12th European Conference on Fracture, September 14-18, Sheffield, U.K., Vol. III: 1363 - 1368Google Scholar
  20. 20.
    Will P., Michel B., Schaper M. (1990): Justification of non linear J-resistance curves. Engng. Fract. Mech. 37, 2: 275 - 281CrossRefGoogle Scholar
  21. 21.
    Will P. (1994): R-curves of energy dissipative materials. J. Mat. Sci. 29: 2335 - 2340CrossRefGoogle Scholar
  22. 22.
    Paris P. C., Tada H., Zahoor A., Ernst H. (1977): The theory of instability of tearing mode of elastic-plastic crack growth. In: ASTM STP 668: Elastic plastic fracture: 5-36Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2001

Authors and Affiliations

  • W. Grellmann
    • 1
  • S. Seidler
    • 1
  • W. Hesse
    • 1
  1. 1.MerseburgGermany

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