Kev Saib Xyuas Kev Pom
1. Nto hnav: yog tias pom tseeb grooves, tawg, lossis ntug kua muag tshwm, hloov tam sim ntawd.
2. Deformation / hardening: Yog tias nws tsis hlav rov qab tom qab raug nias lossis saum npoo yog whitin thiab ci, nws qhia tias cov khoom laus laus.
Tuab thiab elasticity
1. Thickness txo: yog tias nws tsawg dua 30% ntawm tus qauv qub (piv txwv li, 30 hli yog tsawg dua 21mm), nws yuav tsum tau hloov.
2. Kev Ntsuas Elasticity: Yog tias nws rov qab los rau nws cov duab qub tom qab muab ib qho khoom hnyav, nws qhia tias tsis muaj teeb meem.
Kev khiav hauj lwm xwm txheej
1. Lub suab nrov txawv: lub suab tsis zoo lossis nquag sib txawv thaum lub sijhawm ua haujlwm yuav qhia tau cov txheej txheem sab hauv.
2. Slippage / loosening: tsis txaus nro ua rau muaj lub zog sib kis; kev hloov kho lossis hloov chaw.
Kev Kuaj Xyuas Ntxuav
1. Cov kab nrib pleb
