SARDOU SAS has developed highly stressed composites parts for 35 years. SARDOU SAS and QUALITY INDUSTRIAL PRODUCT invented composite coils springs in 2002. Developing composite coils springs, we have faced a big challenge, how to increase the short life expectancy of this highly stressed structure?We have identified that the weak point, in composite coils springs, is its epoxy matrix. In fact, during heavy loading, the matrix undergoes micro cracks. Then, during fatigue, micro cracks propagate and merge, transforming the matrix into a fine powder. The composite coil suspension springs, using, classic epoxy, where ruined after only 100,000 cycles in the best cases. The fact to integrate “functionalized silica aggregates”, in the matrix, enable the springs to exceed 1,000,000 cycles, with the same spring design. In addition, the spring stiffness has increased by 6% and the thermal set has reduced by 1.6%. Based on these results we have worked, over 7 years, to develop, refine, and improve the efficiency and to reduce the cost of our technology.


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    Title :

    EPOSIL® for Automotive Suspension Components, Coils Springs and High Pressure Vessels


    Additional title:

    Sae International Journal of Passenger Cars. Mechanical Systems
    Sae Int. J. Passeng. Cars - Mech. Syst


    Contributors:

    Conference:

    SAE 2015 World Congress & Exhibition ; 2015



    Publication date :

    2015-04-14


    Size :

    7 pages




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    EPOSIL® for Automotive Suspension Components, Coils Springs and High Pressure Vessels

    Sardou, Max / Djomseu, Patricia | British Library Conference Proceedings | 2015


    EPOSIL for automotive suspension components, coil springs and high pressure vessels

    Sardou,m. / Djomseu,P. / Sardou Societe Anonyme,FR et al. | Automotive engineering | 2015


    Hot-coiling automotive suspension springs

    Engineering Index Backfile | 1946


    Titanium Coil Springs for Automotive Suspension Systems

    Sherman, A. M. | SAE Technical Papers | 1980


    Fatigue Design of Automotive Suspension Coil Springs

    Ouakka, A. / Langa, M. / Society of Automotive Engineers | British Library Conference Proceedings | 2002