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Détail de l'auteur
Auteur Le-Hua Qi
Documents disponibles écrits par cet auteur
Affiner la rechercheCarbon-fiber reinforced paper-based friction material / Jie Fei in Transactions of the ASME . Journal of tribology, Vol. 130 N° 4 (Octobre 2008)
[article]
in Transactions of the ASME . Journal of tribology > Vol. 130 N° 4 (Octobre 2008) . - 7 p.
Titre : Carbon-fiber reinforced paper-based friction material : study on friction stability as a function of operating variables Type de document : texte imprimé Auteurs : Jie Fei, Auteur ; He-Jun Li, Auteur ; Le-Hua Qi, Auteur Année de publication : 2015 Article en page(s) : 7 p. Note générale : Tribology Langues : Anglais (eng) Mots-clés : Pressure Stability Friction Temperature Friction materials Braking Flow (Dynamics) Carbon fibers Torque Résumé : Carbon-fiber-reinforced paper-based friction material (CFRPF), as a new type of wet friction material for automatic transmission, was prepared by a paper-making process. The frictional response of CFRPF is highly complex under a set of dynamically variable operating conditions. To better understand the effect of operating factors (braking pressure, rotating speed, oil temperature, and oil flow rate) on friction stability of the material, tests were carried out using a single ingredient experiment and the Taguchi method. Experimental results show that the braking stability and the dynamic friction coefficient (μd) decrease as braking pressure, rotating speed, oil temperature, and oil flow rate increase. The influence of braking pressure on μd is largest among the four operating factors. μd declines gradually during the first 3000 repeated braking cycles and changes very little subsequently due to the surface topography change in friction material. En ligne : http://tribology.asmedigitalcollection.asme.org/article.aspx?articleid=1468123 [article] Carbon-fiber reinforced paper-based friction material : study on friction stability as a function of operating variables [texte imprimé] / Jie Fei, Auteur ; He-Jun Li, Auteur ; Le-Hua Qi, Auteur . - 2015 . - 7 p.
Tribology
Langues : Anglais (eng)
in Transactions of the ASME . Journal of tribology > Vol. 130 N° 4 (Octobre 2008) . - 7 p.
Mots-clés : Pressure Stability Friction Temperature Friction materials Braking Flow (Dynamics) Carbon fibers Torque Résumé : Carbon-fiber-reinforced paper-based friction material (CFRPF), as a new type of wet friction material for automatic transmission, was prepared by a paper-making process. The frictional response of CFRPF is highly complex under a set of dynamically variable operating conditions. To better understand the effect of operating factors (braking pressure, rotating speed, oil temperature, and oil flow rate) on friction stability of the material, tests were carried out using a single ingredient experiment and the Taguchi method. Experimental results show that the braking stability and the dynamic friction coefficient (μd) decrease as braking pressure, rotating speed, oil temperature, and oil flow rate increase. The influence of braking pressure on μd is largest among the four operating factors. μd declines gradually during the first 3000 repeated braking cycles and changes very little subsequently due to the surface topography change in friction material. En ligne : http://tribology.asmedigitalcollection.asme.org/article.aspx?articleid=1468123