Qhov cuam tshuam ntawm cov phiaj xwm sib txawv ntawm cov qauv txheej txheem ntawm kev tiv thaiv tawg thiab cov khoom tiv thaiv ballistic
May 25, 2024
Table 4 muab kev sib piv ntawm kev ua haujlwm ntawm cov khoom tawg ntawm ntau lub hom phiaj nrog cov qauv sib txawv. Cov kev sib piv yog raws tag nrho cov ntom ntom ntom ntawm lub hom phiaj phaj (txawv ntawm qhov ntom ntawm ib txheej ntawm lub hom phiaj ntawm lub hom phiaj). Lub fragmentation ceev thaum lub sij hawm sim yog hais txog 600m / s. Raws li kev txheeb cais los ntawm cov peev txheej tsawg, V50 teeb tsa tus nqi ntawm ib tus neeg los tiv thaiv cov khoom tsis sib haum xeeb ntawm ntau lub teb chaws, tshwj xeeb tshaj yog cov khoom siv kaus mom hlau. Cov tub rog Asmeskas lub kaus mom PASGT V50 yog 610m / s, cov tub rog German yog 620m / s, Fabkis pab tub rog yog 680m / s, Kaus Lim Qab Teb yog 609m / s, thiab Tuam Tshoj cov kaus mom hlau tshiab V50 yog 610m / s. Hauv Table 4, cov ntsiab lus ntawm cov kua nplaum ntawm CT709 laminate yog 12%, thiab lwm cov phiaj xwm phaj yog cov laminates yooj yim.
Nws tuaj yeem pom los ntawm cov txiaj ntsig hauv Table 4. Raws li cov xwm txheej uas tag nrho qhov ntom ntom ntawm lub hom phiaj phaj yog qee yam. Tsuas yog nyob rau hauv cov nqe lus ntawm ballistic tsis kam. Cov qauv laminated yooj yim ntawm ultra-siab molecular hnyav polyethylene fiber ntau orthogonally nteg cov khoom sib xyaw (spectra shielded Plus LCR) muaj peev xwm tiv thaiv kev tawg ntau tshaj. Qhov no yog ua raws li CT709 laminated fabrics thiab laminates. Muab lub hom phiaj ntxiv rau kev sib xyaw ua ke ntawm daj thiab dawb flakes. Qhov phem tshaj plaws yog ib qho daj nti laminated phiaj phaj.
Txhawm rau tiv thaiv kev tawg, cov ntaub ntawv hauv qab no thiab kev sib tham kuj tuaj yeem tau txais los ntawm Table 4:
Lub axial tensile mechanical zog ntawm ultra-high molecular hnyav polyethylene Spectra2000 fiber ntau yog ntau tshaj 2 npaug siab dua li ntawm para-aromatic polyamide fiber. Txawm li cas los xij, anti-fragment V50 ntawm laminated dawb zaj duab xis nrog tib qhov ntom ntom ntom ntom ntawm lub hom phiaj tsuas yog kwv yees li 16% siab dua li ntawm laminated daj zaj duab xis. Lub laminated dawb zaj duab xis tsuas yog 2% siab dua li CT709 laminated ntaub. Qhov no qhia tau hais tias qhov zoo heev tensile mechanical zog ntawm ultra-high molecular hnyav polyethylene fiber tsis tau siv tag nrho. Qhov no muaj feem xyuam nrog cov khoom siv hluav taws xob tsawg (compression thiab shear) ntawm ultra-high molecular hnyav polyethylene fibers thiab lawv qhov kub thiab txias.
Nyob rau hauv tib lub hom phiaj ntom ntom ntom ntom ntom nti, anti-fragic muaj peev xwm ntawm zaj duab xis daj yooj yim yog qhov zoo li cov CT709 Laminated ntaub. Qhov laj thawj tseem ceeb yog tias lub hom phiaj daj yog cov khoom siv sib xyaw ua ke nrog cov ntsiab lus ntawm ntau dua 20%, thiab cov ntsiab lus fiber ntau sib npaug yog qis dua li CT709 laminated ntaub. Txawm hais tias cov fiber ncaj ncaj hauv daim ntawv daj yog siab dua li ntawm cov ntaub laminated, nws lub zog fiber ntau diffusion muaj peev xwm siab dua li ntawm cov ntaub laminated. Txawm li cas los xij, nws lub zog fiber ntau pab txhawb qis dua li ntawm cov ntaub laminated, thiab cov txiaj ntsig zoo ntawm cov mos txwv yog qhov sib xyaw ntawm ob yam.
Piv nrog CT709 npuag laminated composite cov ntaub ntawv thiab CT709 laminated fabrics nrog tib lub zuag qhia tag nrho nto ntom ntom ntawm lub hom phaj, lub peev xwm los tiv thaiv fragmentation ntawm ob yog qhov zoo tib yam. Txawm hais tias cov ntaub ntawv laminated composite thiab laminated npuag phiaj phaj muaj tib tus naj npawb ntawm cov txheej txheej, cov khoom tiv thaiv V50 ntawm tus qub yog 50-70M / S siab tshaj qhov tom kawg (saib Table 3). Qhov no kuj qhia tau hais tias cov ntaub los yog fiber ntau yog lub ntsiab yog vim li cas rau kev txhim kho ntawm anti-fragmentation muaj peev xwm, thaum lub koom haum ntawm matrix rau anti-fragmentation muaj peev xwm yog txwv.
Los ntawm kev sib xyaw ua ke ntawm cov flakes daj thiab dawb flakes, superior anti-fragmentation zog tau muab piv rau daj flakes ib leeg. Txawm hais tias cov yeeb yaj kiab dawb huv muaj qhov zoo dua los tiv thaiv tawg los yog muaj peev xwm nkag mus. Txawm li cas los xij, nws yog qhov loj thiab kim, thiab nws cov khoom siv tensile zoo heev tsis tau siv tag nrho. Yog li tsuas yog laminating cov nplooj ntawv dawb tsis yog txoj kev xaiv cov khoom zoo. Thiab ob cov ntaub ntawv (daj zaj duab xis thiab zaj duab xis dawb) tuaj yeem ua tiav qhov zoo tshaj plaws ntawm kev ua tau zoo, qhov hnyav thiab tus nqi. Rau kev sib xyaw ua ke ntawm cov yeeb yaj kiab dawb nyob rau hauv pem hauv ntej thiab daj zaj duab xis nyob rau hauv lub nraub qaum, nws lub peev xwm los tiv thaiv kev tawg yog qis dua li kev sib xyaw ntawm cov yeeb yaj kiab daj nyob rau hauv pem hauv ntej thiab cov yeeb yaj kiab dawb hauv qab. Lub ntsiab yog vim li cas yog tias lub ultra-high molecular hnyav polyethylene nyob rau hauv pem hauv ntej ntawm lub phiaj phaj yuav undergone tsis-tensile puas vim lub zos siab, yog li nws zoo heev tensile mechanical zog tsis tuaj yeem siv tag nrho. Lwm qhov laj thawj yog tias ultra-high molecular hnyav polyethylene fiber ntau nrog lub zog ntau dua, kev hloov pauv thiab elongation ntawm kev tawg tuaj yeem ua rau nws lub zog tensile mechanical zog tom qab. (Nws tuaj yeem pom los ntawm kev soj ntsuam ntawm qhov kev puas tsuaj morphology tias fiber ntau tawg nyob rau tom qab ntawm lub hom phiaj phaj yog feem ntau yog tensile tawg hom). Ntawm qhov tod tes, qhov kev ntxhov siab yoj mus ceev hauv cov high modulus thiab qis molecular fibers yog siab tshaj qhov uas muaj kev sib txawv ntawm kev ntxhov siab (lim hiam).
