Kev tiv thaiv qib ntawm lub phaj ballistic feem ntau yog txiav txim siab los ntawm cov hom kev hem nws tuaj yeem tiv taus raws li kev ntsuas kev ntsuas thiab cov ntaub ntawv xeem tau tshwm sim; nws tsis yog tsuas yog ua haujlwm ntawm lub phaj thickness lossis qhov hnyav. Cov qauv kev tiv thaiv txawv raws lub teb chaws thiab cheeb tsam; Cov piv txwv xws li US NIJ cov qauv thiab ntau yam kev sim hauv cheeb tsam. Txij li cov qauv kev sim, cov xwm txheej, thiab qib kev xaiv tuaj yeem sib txawv ntawm cov qauv, nws yog ib qho tseem ceeb kom paub tseeb tias tus qauv twg cov khoom ua raws li kev sib piv ballistic daim hlau.
Kev tiv thaiv qib raug soj ntsuam raws li cov xwm txheej xws li kev sim mos txwv, qhov tshaj tawm qhov projectile, thiab lwm yam kev cai. Cov theem sib txawv hais txog hom kev hem thawj tshwj xeeb thiab tsim cov kev cai sib xws txog cov khoom siv thiab kev ncaj ncees ntawm cov qauv. Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias NIJ cov qauv tau txais kev kho dua tshiab uas tuaj yeem hloov kho cov kev ntsuas tshwj xeeb; Yog li ntawd, thaum tshuaj xyuas cov khoom specifications, ib tug yuav tsum tau them sai sai mus rau qhov tshwj xeeb version ntawm tus qauv siv, es tsis txhob cia siab rau ib leeg rau cov theem tsim.
Lub ballistic phaj qib kev tiv thaiv kuj cuam tshuam los ntawm nws cov qauv tsim thiab cov khoom muaj pes tsawg leeg. Cov ntaub ntawv xws li ceramics, siab -kev ua tau zoo polyethylene (HPPE), aramid, thiab ntau yam sib xyaw yog siv nyob rau ntau qib kev tiv thaiv. Txawm tias muaj cov khoom siv tib yam, qhov kev ua tau zoo kawg tuaj yeem sib txawv heev nyob ntawm tus qauv tsim thiab kev tsim khoom. Yog li ntawd, qib kev tiv thaiv tiag tiag tsis tuaj yeem txiav txim siab raws li cov khoom siv, thickness, lossis qhov hnyav.
Lub ballistic phaj qib kev tiv thaiv feem ntau qhia txog nws qhov kev ua tau zoo nyob rau hauv cov kev sim tshwj xeeb thiab tsis txhais tau tias muaj peev xwm tiv taus txhua hom kev hem thawj. Rau cov khoom tsim nyog rau daim ntawv thov kev ruaj ntseg tiag tiag, qhov tseem ceeb yuav tsum tau muab rau cov uas tau dhau los ua kev sim thiab qhia meej meej cov qauv siv tau thiab cov kev sim.
