Ib hnub yav tom ntej dyes nyob rau hauv hluav taws xob motors yuav qhia tau hais tias thaum cable rwb thaiv tsev yog ua tsis yooj yim sua thiab lub cev muaj zog yuav tsum tau hloov.Cov txheej txheem tshiab tau tsim ua kom cov dyes tau ncaj qha mus rau hauv lub rwb thaiv tsev.Los ntawm kev hloov xim, nws yuav qhia ntau npaum li cas cov insulating resin txheej nyob ib ncig ntawm cov xov tooj ntawm lub cev muaj zog tau degraded.

Cov dyes xaiv glows txiv kab ntxwv nyob rau hauv UV teeb, tab sis thaum ntsib cawv nws hloov mus rau lub teeb ntsuab.Cov xim sib txawv tuaj yeem txheeb xyuas los ntawm cov khoom siv tshwj xeeb uas tau teeb tsa hauv lub cav.Nyob rau hauv txoj kev no, tib neeg tuaj yeem pom tias yuav tsum tau hloov pauv, tsis tas yuav qhib lub cav.Vam tias nws tuaj yeem zam qhov tsis tsim nyog hloov lub cev muaj zog yav tom ntej.