Skip to main content
SpringerLink
Log in

Dynamic fracture mechanics of a RIM polyamide block copolymer reinforced with glass strand mat

  • Published:
Polymer Bulletin Aims and scope Submit manuscript

Abstract

The fracture behavior of a reaction injection molded (RIM) polyamide block copolymer reinforced with randomly arranged continuous glass fiber bundles (glass mats) was studied under dynamic loading conditions at T=RT and T=-40 °C. Dynamic fracture toughness, Kd, and fracture energy, Gd, values were derived from instrumented high-speed impact bending tests carried out on Charpy and Izod specimens of different size and notching direction, respectively. It was established that fracture mechanics data depend on the ligament width of the specimens. It was shown how the “inherent” flaws caused by machining and molding can be determined. Failure mode of the composites was characterized by fractography and possible failure events were summarized. Recommendations were given for further material improvements.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. Williams, J.G.: Fracture Mechanics of Polymers, Ellis Horwood Ltd., Chichester, 1984

    Google Scholar 

  2. Savadori, A.:Polym. Test., 5 (1985), 209

    Article  Google Scholar 

  3. Plati, E. and Williams, J.G.:Polym. Eng. Sci., 15 (1975), 470

    Article  CAS  Google Scholar 

  4. Callear, J.E. and Shortall, J.B.:J. Mater. Sci., 12 (1977), 141

    Article  CAS  Google Scholar 

  5. Karger-Kocsis, J. and Friedrich, K.:Plast. Rubb. Process. Appl., 12 (1989), 63

    CAS  Google Scholar 

  6. Akay, M. and Barkley, D.:Polym. Test., 7 (1987), 391

    Article  CAS  Google Scholar 

  7. Otaigbe, J.U. and Harland, W.G.:J. Appl. Polym. Sci., 37 (1989) 77

    Article  CAS  Google Scholar 

  8. Karger-Kocsis, J.: Structure and fracture mechanics of injection molded composites in “Encyclopedia of Composites” (Ed.: Lee, S.M.), VCH Publ., N.Y., (to be appeared)

  9. Friedrich, K. and Karger-Kocsis, J.: Fracture and fatigue of unfilled and reinforced polyamides and polyesters in “Solid State Behavior of Linear Polyesters and Polyamides” (Eds.: Schultz, J. M and Fakirov, S.), Prentice Hall Inc. Englewood Cliff, 1990, p.248

    Google Scholar 

Download references

Author information

Author notes

  1. J. Karger-Kocsis

    Present address: Polymer and Composites Group, TU Hamburg-Harburg, P.O. Box 901403, D-2100, Hamburg 90, FRG

Authors and Affiliations

  1. Institute for Composite Materials, University of Kaiserslautern, D-6750, Kaiserslautern, Federal Republic of Germany

    J. Karger-Kocsis

Authors
  1. J. Karger-Kocsis
    View author publications

    You can also search for this author in PubMed Google Scholar

Rights and permissions

Reprints and permissions

About this article

Cite this article

Karger-Kocsis, J. Dynamic fracture mechanics of a RIM polyamide block copolymer reinforced with glass strand mat. Polymer Bulletin 24, 341–348 (1990). https://doi.org/10.1007/BF00306585

Download citation

  • Accepted:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF00306585

Keywords

Search

Navigation