Akwai manyan hanyoyi guda biyar don gano lahanin murabba'i da rectubes na tangular:

1. Eddy halin yanzu dubawa

Gwajin Eddy na yanzu ya haɗa da ainihin gwajin eddy na yanzu, gwajin eddy na yanzu mai nisa, gwajin eddy na yanzu mai yawan mitoci, da gwajin bugun jini guda ɗaya.Yin amfani da firikwensin eddy na yanzu don jawo kayan ƙarfe ta hanyar maganadisu, nau'in da siffar lahani na saman bututun rectangular zai haifar da nau'ikan siginar bayanai daban-daban.Yana da fa'idodi na babban daidaiton dubawa, babban kulawar dubawa, da saurin dubawa.Yana iya bincika saman da ƙananan yadudduka na bututun da aka gwada, kuma ba zai cutar da shi ba ta hanyar raguwa kamar tabon mai a saman bututun ƙarfe da aka gwada.Rashin hasara shi ne cewa yana da sauƙin rarrabe sassa marasa lahani a matsayin lahani, ƙimar gano ƙarya yana da girma, kuma ƙudurin allon dubawa ba shi da sauƙin daidaitawa.

2. Gwajin Ultrasonic

Lokacin da duban dan tayi ya shiga wani abu kuma ya sami aibi, wani yanki na mitar sauti yana haifar da fili mai haske.Ayyukan maƙasudi da yawa na karɓa da aikawa na iya yin nazarin raƙuman saman da ke nunawa, kuma zai iya gano kurakuran daidai da daidai.Ana amfani da gwajin Ultrasonic sosai wajen duba simintin ƙarfe.Hankalin dubawa yana da girma, amma bututun mai rikitarwa ba shi da sauƙin dubawa.An kayyade cewa saman bututun rectangular da za a duba yana da wani matakin kyalkyali, kuma tazarar da ke tsakanin kamara da saman da aka duba an toshe shi da wani silane coupling agent.

3. Hanyar duba barbashi Magnetic

Ainihin ka'ida na Magnetic barbashi dubawa hanya ne don kammala electromagnetic filin a cikin albarkatun kasa na square karfe bututu.Dangane da hulɗar da ke tsakanin ɗigogi na filin lantarki da na'urar bincike na maganadisu, lokacin da aka sami katsewa ko lahani a cikin shimfidar ƙasa ko kusa da saman, layin filin maganadisu zai zama wani ɓangare na nakasar inda babu ci gaba ko lahani, sakamakon haka filin maganadisu.Amfaninsa shine ƙarancin saka hannun jari a ayyukan injina da kayan aiki, babban kwanciyar hankali da hoto mai ƙarfi.Lalacewar ita ce ainihin farashin aiki yana ƙaruwa, rarrabuwar lahani ba daidai ba ne, kuma saurin dubawa yana da ɗan jinkiri.

4. Ganewar infrared

Dangane da babban mitar maganadisu induction electromagnetic coil, an haifar da ƙarfin lantarki a saman bututun murabba'in.Ƙarfin wutar lantarki da aka jawo zai sa yankin da ba shi da ƙarfi ya cinye makamashin lantarki mai yawa, yana haifar da zafin jiki na wasu sassa.Yi amfani da shigar da infrared don bincika zafin wasu sassa don gano zurfin lahani.Ana amfani da na'urori masu auna firikwensin gabaɗaya don duba lahani na saman, kuma ana amfani da rashin jin daɗi don duba kayan ƙarfe marasa daidaituwa a saman.

5. Duban kwararar ruwan Magnetic

Hanyar duba leka mai juyi maganadisu tana da kama da tsarin binciken barbashi na maganadisu, kuma filin aikace-aikacensa, azanci da kwanciyar hankali sun fi ƙarfin binciken ƙwayar maganadisu.