relation: http://eprints.imtlucca.it/1936/ title: Size-scale effects on the friction coefficient creator: Carpinteri, Alberto creator: Paggi, Marco subject: TJ Mechanical engineering and machinery description: An overview of the classical friction laws holding at the macro-scale and the new developments at the nano-level are proposed. Furthermore, two opposite phenomena are addressed: the former concerning the apparent weakness of the San Andreas fault, the latter regarding the strong frictional behavior which appears at the nano-scale. An interpretation of these size effects on the friction coefficient is attempted making use of the renormalization group procedure which allows to explain the frictional phenomena over all the scales. publisher: Elsevier date: 2005 type: Article type: PeerReviewed identifier: Carpinteri, Alberto and Paggi, Marco Size-scale effects on the friction coefficient. International Journal of Solids and Structures, 42 (9–10). 2901 - 2910. ISSN 0020-7683 (2005) relation: http://www.sciencedirect.com/science/article/pii/S0020768304005670 relation: 10.1016/j.ijsolstr.2004.10.001