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handle: 10261/4484
[ES] Se estudia la influencia en la formación del encastre (“clinching”) del espesor de adhesivo en uniones híbridas a solape, para adhesivos con y sin capacidad de relleno -poliuretanos y cianoacrilatos - en chapas galvanizadas y prepintadas. Los resultados en ensayos estáticos y mecanismos de rotura son también influidos por el espesor de los adherentes. En los análisis de fracturas, realizados por microscopia óptica y electrónica, las características de fatiga son difícilmente observables para los poliuretanos, mostrándose, por el contrario, con bastante evidencia para los cianoacrilatos. Los análisis de los comportamientos en fatiga fueron muy satisfactorios, con límites de fatiga del orden del 40% al 50% de las correspondientes resistencias a carga estática, según los casos.
[EN] In this work it is studied the influence on the spot clinching formation of the adhesive thickness for hybrid lap joints of adhesives with and without capability of full up –polyurethanes and cyanoacrylates - applied on galvanised and painted sheets. The results of static tests and the mechanisms of fracture are also influenced by the adherents thickness. In fracture analysis, performed with optical and electronic microscopy, fatigue characteristics are very difficult to observe on polyurethanes, but they can be seen, on the contrary, with quite evidence on cyanoacrylates. Fatigue behaviour analysis were very satisfactory, with fatigue limits over the range of 40% to 50% of the respective static resistance, depending on the cases.
Peer reviewed
adhesive, fatiga, Autorremachado, Fatiga, Clinching, Adhesive, Clay industries. Ceramics. Glass, Hybrid joints, Adhesivos, Uniones híbridas, TP785-869, clinching, fatigue, autorremachado, Fatigue
adhesive, fatiga, Autorremachado, Fatiga, Clinching, Adhesive, Clay industries. Ceramics. Glass, Hybrid joints, Adhesivos, Uniones híbridas, TP785-869, clinching, fatigue, autorremachado, Fatigue
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