Zuloaga-Ramirez, PabloFrövel, MalteBelenguer Dávila, TomásSalazar, Félix2023-06-182023-06-182015-030963-869510.1016/j.ndteint.2014.12.003https://hdl.handle.net/20.500.14352/23242Received 1 July 2014, Revised 2 December 2014, Accepted 7 December 2014, Available online 18 December 2014This work presents the evaluation of a new non-contact technique to assess the fatigue damage state of CFRP structures by measuring surface roughness parameters. Surface roughness and stiffness degradation have been measured in CFRP coupons cycled with constant amplitude loads, and a Pearson׳s correlation of 0.79 was obtained between both variables. Results suggest that changes on the surface roughness measured in strategic zones of components made of the evaluated CFRP, could be indicative of the level of damage due to fatigue loads. This methodology could be useful for other FRP due to similarities in the fatigue damage process.engAtribución-NoComercial-SinDerivadas 3.0 Españahttps://creativecommons.org/licenses/by-nc-nd/3.0/es/journal articlehttps://doi.org/10.1016/j.ndteint.2014.12.003http://www.sciencedirect.com/science/article/pii/S0963869514001431http://oa.upm.es/40826/open access620.1535Fatigue of compositesNon-destructive testNon-contact inspectionOptical inspectionFísica de materialesÓptica (Física)2209.19 Óptica Física