ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
An effort has been made in the present investigation to evaluate the wear resistance ofnuclear fuel rods with a variation of the supporting spring shapes and their stiffness by conductingfretting wear tests in room temperature air and water. With increasing slip amplitude, the wearvolume and maximum wear depth are increased with increasing slip amplitude. However, these arenot linearly increased with increasing spring stiffness. After the wear test, the worn surfaces wereobserved to investigate the debris behavior and wear mechanism by using an optical microscope(OM). The results indicated that almost all of the wear debris remained between the contactingsurfaces and the wear debris layers were well developed in room temperature air. Besides, some ofthe debris also remained on the worn surface in room temperature water. This result shows that theremaining debris effect on the worn surface was more dominant than the spring stiffness one. So, inorder to improve the fretting wear resistance of a nuclear fuel rod, it is necessary to consider thedebris behavior between contacting surfaces even though the supporting spring shape wasoptimized by considering the contact mechanics, material compatibility, etc. From the experimentalresults, the fretting wear mechanisms and the effect of spring properties were discussed
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/54/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.345-346.1365.pdf
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