Answer
Mugihe hitabwa cyane kumunaniro wimpeta, urukuta rwa groove mumazu (cyane cyane muri aluminium cyangwa ibyuma byoroshye) narwo rushobora kunanirwa kubera umunaniro. Kuzunguruka kwizunguruka bitera micro-deformasiyo yumusozi wa groove. Igihe kirenze, ibi birashobora kuganisha ku 'gucika intege' no gushiraho umunaniro ukabije munsi yigitereko, kikaba ari ikintu gitera imbaraga ($ K_t \ hafi 3-5 $). Niba urukuta rwa groove rwananiwe, impeta itakaza inkunga kandi inteko irananirana. Kugira ngo ibyo birinde, abajenjeri bagomba kwemeza ko umuvuduko ntarengwa w’itumanaho uri hagati yimpeta n’urukuta rwa ruhago $ p = P / (\ pi D d) $ uri munsi y’umunaniro w’ibikoresho byo mu nzu, kandi bagatekereza uburyo bwo kuvura 'bigoye-anodize' cyangwa 'nitride'.
