Lub tshuab kuaj cov ntaub ntawv yog cov cuab yeej siv los txiav txim siab cov khoom siv kho tshuab, cov yam ntxwv ua haujlwm, thiab cov khoom siv tsis raug (xws li hlau, tsis yog{0}} hlau, thiab cov khoom sib xyaw), cov khoom siv tshuab, thiab cov qauv tsim vaj tsev nyob rau hauv ntau yam xwm txheej thiab ib puag ncig; Nws kuj tseem siv los ntsuas qhov dynamic unbalance nyob rau hauv rotating qhov chaw. Cov tshuab no yog cov cuab yeej tseem ceeb rau kev tshawb fawb thiab kev tsim kho nrog cov ntaub ntawv tshiab, txheej txheem, thev naus laus zis, thiab cov qauv tsim. Lawv tau siv dav rau kev sim thiab tshuaj xyuas cov cuab yeej zoo li qub-xws li tensile, compressive, flexural, shear, tev, tear, load- tuav, so, thiab cyclic tests- ntawm cov hlau thiab tsis yog-hlau (suav nrog cov khoom sib xyaw). Lawv tuaj yeem suav cov ntsuas ntsuas xws li ReH, ReL, Rp0.2, Fm, Rt0.5, Rt0.6, Rt0.65, Rt0.7, Rm, thiab E, thaum ua cov kev sim thiab tsim cov ntaub ntawv raws li cov qauv hauv tebchaws thiab thoob ntiaj teb (xws li GB, ISO, DIN, ASTM, JIS).
Cov khoom siv kuaj tshuab yog siv los ntsuas cov khoom siv kho tshuab- xws li lub zog tensile, compression, dabtsi yog khoov, shear, thiab kua muag tsis kam- ntawm cov ntaub ntawv xws li roj hmab, yas, textiles, waterproofing cov ntaub ntawv, xov hlau thiab cables, thiab hlau. Nrog rau qhov sib ntxiv ntawm cov khoom siv tshwj xeeb, lawv tuaj yeem ua cov kev sim flexural. Lawv ua haujlwm zoo tshaj plaws rau kev soj ntsuam cov cuab yeej rau cov koom haum tshawb fawb, tsev kawm qib siab, kev lag luam thiab kev lag luam mining, nrog rau cov chaw ua haujlwm saib xyuas kev lag luam, tshuaj xyuas cov khoom, thiab kev txiav txim siab.