caa a22 4500 463221656 CHVBK 20180405153214.0 cr unu---uuuuu 170326e20070801xx s 000 0 eng 10.1007/s10853-006-1313-z doi (NATIONALLICENCE)springer-10.1007/s10853-006-1313-z Cyclic loading and marine environment effects on the properties of HDPE umbilical cables [Elektronische Daten] [Nelson Cárdenas, Izabel Machado, Edison Gonçalves] This work presents a study of the effects of cyclic loading and marine environment on the mechanical properties of high-density polyethylene (HDPE) used in the external layer of submarine cables. Two different types of samples were tested. The first type was tested in the as-received condition whereas the second one was taken from the cyclic-loaded material. The cyclic-load test was carried out in a device, according to the API 17E standard (API 17E-98, Specification for sub sea production control umbilicas). These samples were submitted to a process of artificial aging. All the specimens were submitted to tensile test and the analysis and comparison of the results showed that HDPE suffered alterations in its mechanical behavior, especially the material submitted to cyclic loading. Both aged and as-received samples were observed by using scanning electron microscopy and their hardness was also measured. The results showed that the cyclic loading, the seawater and the ultraviolet radiations accelerated the degradation process of HDPE. Springer Science+Business Media, LLC, 2007 Cárdenas Nelson Department of Mechatronics and Mechanical System Engineering, Polytechnic School University of São Paulo, Av. Prof. Mello Moraes 2231, CEP-05508900, Sao Paulo, SP, Brazil aut Machado Izabel Department of Mechatronics and Mechanical System Engineering, Polytechnic School University of São Paulo, Av. Prof. Mello Moraes 2231, CEP-05508900, Sao Paulo, SP, Brazil aut Gonçalves Edison Department of Mechatronics and Mechanical System Engineering, Polytechnic School University of São Paulo, Av. Prof. Mello Moraes 2231, CEP-05508900, Sao Paulo, SP, Brazil aut Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/16(2007-08-01), 6935-6941 0022-2461 42:16<6935 2007 42 10853 https://doi.org/10.1007/s10853-006-1313-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-006-1313-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Cárdenas Nelson Department of Mechatronics and Mechanical System Engineering, Polytechnic School University of São Paulo, Av. Prof. Mello Moraes 2231, CEP-05508900, Sao Paulo, SP, Brazil aut NATIONALLICENCE 700 1- Machado Izabel Department of Mechatronics and Mechanical System Engineering, Polytechnic School University of São Paulo, Av. Prof. Mello Moraes 2231, CEP-05508900, Sao Paulo, SP, Brazil aut NATIONALLICENCE 700 1- Gonçalves Edison Department of Mechatronics and Mechanical System Engineering, Polytechnic School University of São Paulo, Av. Prof. Mello Moraes 2231, CEP-05508900, Sao Paulo, SP, Brazil aut NATIONALLICENCE 773 0- Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/16(2007-08-01), 6935-6941 0022-2461 42:16<6935 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer