It is widely believed or speculated that higher pad compressibility leads to reduced brake squeal and that caliper design can affect brake squeal. After encountering anecdotal contradictory cases, this investigation was undertaken to systematically generate basic data and clarify the beliefs or speculations. In order to adjust pad compressibility, it is common to modify pad molding temperatures, pressures and times, which in addition to changing the compressibility, changes friction coefficient and physical properties of the pad at the same time. In order to separate these two effects, NAO disc pads were prepared under the same molding conditions while using different thicknesses of the underlayer to achieve different compressibilities, thus changing the compressibility only without changing the friction coefficient and physical properties of the pad. Test results show brake squeal occurrences increasing with increasing compressibility and increasing damping, contrary to the common belief. A combination of higher compressibility pads and higher caliper stiffness leads to increased brake squeal occurrences. The inner pad and outer pad wear rate difference affects disc squeal or caliper-knuckle assembly squeal generation. As the differential becomes smaller and smaller, more disc squeals occur and as the differential pad wear becomes larger, more caliper-knuckle squeals occur. There are indications that when the inner pad high pressure point is well matched against the outer pad high pressure point, in-plane disc squeals occur and when not matched, out-of-plane disc squeals occur.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Disc Brake Squeal vs. Disc Pad Compressibility-Caliper Stiffness Interactions: Low-Frequency Squeal and High-Frequency Squeal vs. Differential Pad Wear


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Park, Byeongkyu (Autor:in) / Jeon, JeSung (Autor:in) / Jeong, JooSeong (Autor:in) / Rhee, Seong Kwan (Autor:in) / Lee, Seongjoo (Autor:in) / Kim, ShinWan (Autor:in) / Kim, ShinWook (Autor:in) / Lee, Wan Gyu (Autor:in) / Cho, Young sun (Autor:in)

    Kongress:

    Brake Colloquium & Exhibition - 35th Annual ; 2017



    Erscheinungsdatum :

    2017-09-17




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch


    Schlagwörter :


    Disc Brake Squeal vs. Disc Pad Compressibility-Caliper Stiffness Interactions: Low-Frequency Squeal and High-Frequency Squeal vs. Differential Pad Wear

    Lee, Seongjoo / Jeon, JeSung / Jeong, JooSeong et al. | British Library Conference Proceedings | 2017


    Disc Brake Squeal

    Tarter,J.H. / Bendix,Automot.Mater.Technol.Cent.,US | Kraftfahrwesen | 1983


    Disc Brake Squeal

    Tarter, James H. | SAE Technical Papers | 1983


    Disc brake squeal

    Tarter, J.H. | Tema Archiv | 1983


    TGV disc brake squeal

    Lorang, X. | Online Contents | 2006