Sage Journals: Discover world-class research

Abstract

The Goodrich block fatigue test is commonly used to determine the (compression) fatigue behavior of tire cord in rubber. An investigation has been conducted into the origin of the loss of cord strength under different load conditions and at different running times. To this end the retained strengths and the force-strain curves of the fatigued cords were measured. The location of the cord fractures and a SEM analysis provided valuable extra information about the fatigue mechanism. The strength loss of the cords appeared to be mainly caused by the strength loss of the filaments. Changes in cord geometry and filament interaction occurring during the fatigue process play no or a very small role in the loss of cord strength. Depending on the load, the filaments show bending, tension-tension, and fretting fatigue damage. The severest fatigue load seems to be high tension combined with a certain amount of compression.

Get full access to this article

View all access options for this article.

References

Bunsell, A.R. , and Hearle, J.W.S. , The Fatigue of Synthetic Polymeric Fibers , J. Appl. Polym. Sci. 18, 267-291 (1974).

Butterworth, G.A.M. , and Platt, M.M. , Tire Cord Deformation and Failure Phenomenon, AICHE: 6th Annual Synth. Fibres Symp., Williamsburg, April 1969.

Butterworth, G.A.M. , Platt, M.M. , Erlandson, R.E. , Hoenshell, S.D. , and Barish, L. , Phenomenological Research into Failure Mechanisms of Cord Reinforced Rubber Systems, Fabric Research Laboratories, Inc. Dedham, Massachusetts 02026, report no. DOT/HS-800 637, May 1971.

de Jong, M.C. , and Winkler, E.M. , Numerical Prediction of the Aramid Cord Load in the Goodrich Block Fatigue Test, Rubber Chem. Technol . (submitted for publication).

Dobb, M.G. , Johnson, D.J. , and Saville, B.P. , Compressional Behaviour of Kevlar Fibres, Polymer 22, 960-965 (1981).

Lomas, B. , and Hearle, J.W.S. , Failure of Fibres used in Rubber, Rubber World 6, 27-35 (1987).

Müller, H. , Untersuchungen über das Ermüdungsverhalten von Reifencord, Faserforsch . Textiltech. 10, 438-444 (1959).

Oudet, C. , and Bunsell, A.R. , Effects of Structure on the Tensile, Creep and Fatigue Properties of Polyester Fibres, J. Mater. Sci. 22, 4292-4298 (1987 ).

Oudet, C. , Bunsell, A.R. , Hagege, R. , and Sotton, M. , Structural Changes in Polyester Fibers during Fatigue, J. Appl. Polym. Sci. 29, 4363-4376 (1984 ).

10.

Van Blokland, P.G.H.M. , Visualization of Textile Reinforcing Materials in Cord-Rubber Composites after Dissolution of the Rubber with Peracids , Rubber Chem. Technol. 59, 574-579 (1986).

11.

Williams, K.R. , Hannell, J.W. , and Swanson, J.M. , Characterization of Cord Fatigue in Tires , Ind. Eng. Chem. 45, 796-800 (1953).

12.

Wilson, M.W. , Tire-Cord Compression Fatigue, Textile Res. J. 21, 47-54 (1951).

13.

Winkler, E.M. , and de Jong, M.C. , Finite Element Calculations on the Stress of an Aramid Cord in a Clamped and Elongated Goodrich Block Fatigue Specimen , Rubber Chem. Technol. 63, 223-233 (1990).

14.

Winkler, E.M. , and Wiegerinck, M.J.J. , Simulating the Bending Energy Losses in the Aramid or Steel Cord Reinforced Sidewall of a Tyre, Kautsch. Gummi Kunstst. 43, 978-980 (1990).

15.

Zimmerman, J. , Tyre Cord Fatigue, Textile Manuf. 101, 49-51 (1974).

An Investigation into the Fatigue Mechanism of PET Tire Cord in the Goodrich Block Fatigue Test

Abstract

Get full access to this article

References