Li-gears tse ka holimo ka mor'a ts'ebetso ea ho thunya li tla ba le qetello e betere le litlhaku tse phahameng tsa mochini.

Ts'ebetso ea ho thunya ke mokhoa oa bohlokoa oa ho ntlafatsa matla a ho khathala ho kobeha le matla a ho khathala ha meno a lisebelisoa, 'me ke tsela ea bohlokoa ea ho ntlafatsa bokhoni ba ho thibela ho oela le ho eketsa bophelo ba lisebelisoa.

Ts'ebetsong ea ho phatloha ha lithunya, karolo e ka holimo ea thepa e tlas'a tšusumetso e matla ea ho thunngoa ha tšepe ho hlahisa lera le thata la deformation, le tla lebisa liphellong tse peli: e 'ngoe ke sebopeho sa ntlafatso ea lijo-thollo tse nyenyane, sekhahla sa dislocation. ea eketseha, 'me ho khopama ha lattice ho mpefala;e 'ngoe ke kenyelletso ea phahameng The macroscopic residual compressive stress.Ho phaella moo, ho hlaka hoa holimo ho eketseha ka lebaka la tšusumetso ea tšepe ea tšepe, e tla etsa hore matšoao a sesebelisoa a bohale a hlahisoang nakong ea ho itšeha a atisa ho ba bonolo.Liphetoho tsena li tla ntlafatsa haholo ho hanyetsa mokhathala le khatello ea kelello ea kutu ea thepa, ka hona ho ntlafatsa haholo bophelo ba lisebelisoa.Tlosa li-burrs tse nyane tsa likarolo, eketsa boima ba bokaholimo ba likarolo tsa tšepe, 'me u felise khatello ea maikutlo.