Kev Tiv Thaiv Kev Tshawb Fawb - Kev Tshawb Fawb Txog Kev Tshawb Fawb Txog Kev Tshawb Fawb Txog Kevlar, Muaj Peev Xwm Sib Txawv thiab Cov Txheej Txheem, Nrog 9 Mm Projectiles

2.1.Ballistic gel

Lub ballistic gel yog tsim los ntawm unflavoured gelatine.Qhov ceev thiab sib xws ntawm cov gel yuav tsum zoo ib yam li uas tau siv los ntawm Tsoom Fwv Teb Chaws Saib Xyuas Kev Tshawb Fawb (FBI).Txhawm rau ua tiav qhov sib xws, cov lus qhia tau muab hauv Ref.[30] tau ua raws thiab nws tau raug sim tawm tsam cov qauv piav qhia hauv Ref.[31].

8 khob (250 ml) ntawm unflavoured gelatine hmoov (kwv yees li 1.25 kg) yog tov nrog 8 L dej (1 feem gelatin rau txhua 4 qhov chaw ntawm dej) kom txog thaum tag nrho cov hmoov yog yaj.Tom qab cov tshuaj tau nchuav rau hauv cov thawv (2 × 5 L ntim tau siv rau cov khoom sib xyaw saum toj no), 5 tee ntawm cov roj tseem ceeb (cinnamon nplooj tseem ceeb roj) tau nchuav rau hauv cov tshuaj thiab maj mam nplawm rau hauv nws.Yog vim li cas rau cov roj yam tseem ceeb yog tso cai rau cov npuas nyob rau hauv cov tshuaj kom dissipate, thiab muab cov ballistic gel ib tug txhim kho tsw.Cov tshuaj tau muab tso rau hauv cov thawv tso rau hauv lub tub yees.Lub ballistic gel tau npaj siv 36 teev tom qab nws tau tsim thiab tom qab ntawd nws tau qhwv hauv cellophane qhwv.Ib daim vis dis aus qhia cov ntsiab lus los ua kom lub ballistic gel yog muaj los ntawmhttps://www.youtube.com/watch?v=0nLWqJauFEw.

Qhov ceev ntawm lub ballistic gel yog xam raws li 996 km / m3(99.6% dej ntom).Qhov nruab nrab ntom ntom ntawm tib neeg cov ntshav, rog thiab nqaij [32], uas yog qhov sib xws ntawm tib neeg lub cev, yog 1004 kg / m3.Qhov sib txawv ntawm 0.8% ntawm qhov ntom yog suav tias yog qhov tsim nyog rau cov gels ballistic kom rov ua dua cov nqaij ntawm tib neeg lub cev.

2.2.Kevlar cov qauv

Peb qhov hnyav ntawm Kevlar npuag tau siv rau hauv kev sim, uas yog, 160 GSM, 200 GSM thiab 400 GSM.Txij li Kevlar tuaj yeem siv los ua cov khoom siv woven, lub zog siab tshaj plaws ntawm cov khoom siv tuaj yeem siv nyob rau hauv 0-90 orientation.Cov qauv tau muab tso nrog −45 / + 45 (quasi-isotropic) kev taw qhia uas absorbs ntau zog raws li qhov cuam tshuam tshaj 0-90 orientations stacked rau ib leeg [33].Cov qauv uas tau siv nyob rau hauv qhov kev ntsuam xyuas tau ua nyob rau hauv ntau ntawm 3 txheej uas txhua tus qauv tau muab tso rau hauv qhov kev txiav txim ntawm 90 / ± 45 / 90.Thaum ob los yog peb cov qauv tau muab tso rau saum toj ntawm ib leeg, nws tau ua tiav xws li cov txheej txheem kawg ntawm ib qho qauv tau muab tso rau ntawm 45 ° mus rau txheej tom ntej ntawm cov qauv tom ntej.

Cov nplooj ntawv Kevlar tau muab faib thiab txiav rau hauv A4 cov ntawv loj los npaj lawv ua ke nrog kev pom zoo epoxy resin thiab hardener.Cov qauv raug tso tseg kom qhuav.Cov qauv raug txiav tom qab cov resin tau teem thiab bolted rau ib leeg thiab muab tso rau hauv txoj hauj lwm rau cov kev ntsuam xyuas yuav tsum tau ua.

Kev ntsuam xyuas ballistic tau ua tiav siv ob hom mos txwv, uas yog lub tsho hlau tag nrho (FMJ) thiab tsho hollow point (JHP) ntawm 9 hli Parabellum (P lossis Para luv luv) calibre.Cov txheej txheem siv los kuaj cov qauv yog piav qhia hauv qab no:

• 1)

• Cov phom chronograph tau teeb tsa los ntsuas cov mos txwv ceev.Lub chronograph tau muab tso rau 2 m los ntawm muzzle ntawm rab phom kom tiv thaiv cov nplaim taws kom muab cov ntawv nyeem tsis raug.

• 2)

• Qhov kev ntsuam xyuas hauv paus tau ua los txiav txim siab lub mos txwv tshaj tawm ncaj qha mus rau hauv lub ballistic gel.Lub kinetic zog sib npaug
  E=(1/2)mv2

  tau siv los txiav txim siab lub zog thiab qhov deb ntawm kev nkag mus rau hauv lub ballistic gel.

• 3)

• CovKevlarcov qauv tau muab tso rau pem hauv ntej ntawm lub ballistic gel thiab qhov no tau muab tso rau 1 m deb ntawm chronograph.Yog vim li cas rau qhov kev ncua deb ntawm 1 m yog rov ua dua qhov xwm txheej phem tshaj plaws uas ib tus neeg lossis cov khoom raug tua nyob ze.

• 4)

• Cov qauv raug tua nrog lub projectile mus los ntawm chronograph los txiav txim siab nws thawj zaug.Tom qab ntawd, tus qauv yog nkag mus thiab qhov projectile yog lodged nyob rau hauv lub ballistic gel.Lub nrawm ntawm cov kev xeem tau siv los ua kom tau ib qhonruab nrab ceevnyeem ntawv uas tau siv los hloov kho cov txiaj ntsig hauv qib 2.

• 5)

• Qhov kev ncua deb ntawm kev nkag mus rau hauv lub ballistic gel tau ntsuas thiab kaw.

• 6)

• Kauj Ruam 2 tau rov ua dua rau txhua hom mos txwv siv hauv kev sim.Kauj ruam 3 txog qib 5 tau rov ua dua rau txhua tus qauv Kevlar.Ib qho kev sim nrog cov mos txwv tshwj xeeb tau rov ua dua yog tias qhov projectile tsis taug kev ncaj nraim hauv lub ballistic gel, lossis yog tias nws nkag mus rau Kevlar tus qauv hauv thaj chaw uas tau txiav txim siab tsis yog lub suab zoo.

Nrog rau cov qauv 3 txheej, 9 hli Parabellum FMJ projectiles taug kev me ntsis hauv kev sib piv rau cov ntaub ntawv uas tsis muaj Kevlar.Lub hollow point projectiles tau mus ntxiv raws li piv rau tsis muaj Kevlar rooj plaub.Lub 9 hli Parabellum projectile (tus naj npawb 4) tsis deform ntau, tab sis lub tsho tooj dag pib rub tawm ntawm qhov projectile.

Cov kev ntsuam xyuas uas tau ua nrog 6 txheej ntawm 160 GSM Kevlar qhia tias 9 hli Parabellum hollow point projectiles mus ntxiv piv rau tsis muaj Kevlar nkag mus rau qhov projectile tooj 4 mus yuav luag tib qhov deb li ntawm FMJ projectile.

Nrog rau 9 txheej ntawm 160 GSM Kevlar, qhov sib txuas mus los ntawm qhov projectiles hauv cov gel pom tias cov xov tooj 1, 3 thiab 4 tau mus ntxiv tom qab nws mus dhau 9 txheej ntawm 160 GSM Kevlar, piv rau cov phiaj xwm tua rau hauv ballistic. gel (tsis muaj Kevlar).

Cov kev ntsuam xyuas tau ua nrog 12 txheej ntawm 160 GSM Kevlar qhia tias txhua qhov projectiles qhia txog kev txo qis ntawm kev nkag mus rau qhov tob piv rau 9 txheej.

Raws li pom hauvFig. 3, qhov tob tob ntawm qhov projectiles fluctuate nrog qhov tob raws li tus naj npawb ntawm cov khaubncaws sab nraud povtseg nce, tab sis ib tug txo yog pom los ntawm 9 mus rau 12 txheej nyob rau hauv txhua rooj plaub.Nws tau pom tias qhov hollow point projectiles nkag mus rau Kevlar txheej thiab hauv cov txheej txheem hollow point tau thaiv nrog Kevlar cov khoom.Thaum cov hollow point projectiles ncav cuag lub ballistic gel, lawv ua tib yam li FMJ projectile.Vim yog qhov laj thawj uas tau hais los saum toj no nrog Kevlar cov qauv siv, cov phiaj xwm nkag mus ntxiv rau hauv cov gel ballistic piv rau cov kev sim ua tsis muaj Kevlar.Tsuas yog ib zaug txaus cov khaubncaws sab nraud povtseg ntawm Kevlar tau nkag mus rau nqus lub zog txaus, puas yog qhov projectile qhia cov yam ntxwv ntawm kev nkag mus rau hauv lub ballistic gel.Cov yam ntxwv no tau pom nyob rau hauv lwm qhov kev xeem, nrog rau qhov sib txawv hnyav Kevlar raws li tau hais hauv daim ntawv no.

3.4.200 GSMKevlar

200 GSM Kevlar xeem tau ua nrog cov qauv ntawm 3, 6, 9, 12 thiab 15 txheej.Txij li thaum 200 GSM Kevlar feem ntau yog siv rau cov tsho tiv thaiv mos txwv, nws tau txiav txim siab ua qhov kev sim nrog 15 txheej.Cov txiaj ntsig ntawm kev nkag mus rau hauv ballistic gel yog qhia hauvDaim duab 4.

Cov kev ntsuam xyuas tau ua nrog 3 txheej ntawm 200 GSM Kevlar qhia tau hais tias 9 hli Parabellum FMJ projectiles tau dhau los ntawm ballistic gel thiab qhov kev ncua deb uas lawv tau mus hauv kev sib piv nrog rau qhov tsis muaj Kevlar rooj plaub tsis raug txo.Lub 9 hli Parabellum hollow point projectiles nce siab raws li qhov xav tau, thiab 9 hli Parabellum projectile tus naj npawb 4 muaj lub tsho tooj dag lodged rau hauv ballistic gel, tab sis cov hlau lead projectile txuas ntxiv thiab nres raws li sau tseg hauvDaim duab 4.

Nrog 6 txheej ntawm 200 GSM Kevlar, nws tau pom tias qhov kev nkag mus deb ntawm qhov projectile 1 mus rau hauv lub ballistic gel poob qis thaum projectiles 2, 3 thiab 4 mus ntxiv rau hauv ballistic gel piv rau qhov tsis muaj Kevlar.

Cov kev ntsuam xyuas tau ua nrog 9 txheej ntawm 200 GSM Kevlar qhia tau hais tias qhov projectile 2 tau mus ntxiv rau hauv cov gel ballistic piv rau qhov tsis muaj Kevlar.Nws tau pom tias qhov projectiles 3 thiab 4 muaj Kevlar thaiv nyob rau hauv lub hollow point uas tiv thaiv nws los ntawm nceb.Projectiles 3 thiab 4 tau taug kev ntxiv mus rau hauv lub ballistic gel tom qab nkag mus rau 9 txheej ntawm 200 GSM Kevlar piv rau qhov tsis muaj Kevlar.

Nrog rau kev ntsuam xyuas nrog 12 txheej ntawm 200 GSM Kevlar, nws tau pom tias 9 hli Parabellum FMJ projectiles, tus naj npawb 1 thiab 2, muaj lub taub hau zoo tom qab nkag mus.Projectile tus naj npawb 4, txawm tias tsis nce mus ntau nrog lub hollow point thaiv nrog Kevlar, tau flattened ntau nyob rau hauv lub taub hau.Projectile tooj 3 tsis nce mus ntau, tab sis muaj pov thawj ntawm lub taub hau deformed.

Cov kev ntsuam xyuas tau ua nrog 15 txheej ntawm 200 GSM Kevlar, muaj ob qho tib si FMJ projectiles qhia cov cim ntawm nceb.Cov naj npawb 1 thiab 2 qhia txog qhov txo qis hauv qhov tob tob rau hauv cov gel ballistic piv rau qhov tsis muaj Kevlar.Hauv qhov xwm txheej tam sim no, qhov projectiles 3 thiab 4 tau nres los ntawm Kevlar txheej.

Raws li pom hauvDaim duab 4, thaum qhov nruab nrab nruab nrab ntawm cov ntsiab lus raug txiav txim siab, nws zoo li qhia tau hais tias ib qho kev sib tw ntawm kev txo qis nkag mus rau hauv ballistic gel tshwm sim, ib zaug lub ncov ntawm kwv yees li 6 txheej ntawm 200 GSM Kevlar tau mus txog.Lub 200 GSM Kevlar tau qhia qhov ua tau zoo dua hauv kev sib piv rau 160 GSM Kevlar, raws li xav tau.Ntawm 15 txheej ntawm 200 GSM Kevlar, qhov projectiles naj npawb 3 thiab 4 tau raug tso tseg, tab sis tsis yog qhov projectiles tus naj npawb 1 thiab 2. Ua raws li qhov nruab nrab gradient, nws kwv yees tias qhov projectiles naj npawb 1 thiab 2 yuav tsum tsis txhob siv tej zaum 18 thiab 21 txheej. 200 GSM Kevlar, feem.

• 400 GSM Kevlar kev xeem tau ua tiav siv cov qauv ntawm 3, 6, 9 thiab 12 txheej, raws li qhia los ntawm cov txiaj ntsig tau pom hauvDaim duab 5.

4. Kev tshuaj xyuas thiab kev sib tham txog cov txiaj ntsig

Daim duab 6qhia qhov sib piv ntawm qhov tob tob ntawm qhov sib txawv projectiles rau hauv 3 txheej ntawm 160 GSM, 200 GSM thiab 400 GSM Kevlar.Raws li pom hauvDaim duab 6, nrog rau 9 hli Parabellum hollow point projectiles, 3 txheej ntawm 200 GSM Kevlar nres lub projectiles nyob rau hauv lub shortest deb.3 txheej ntawm 400 GSM thiab 160 GSM Kevlar nres qhov projectiles 1 thiab 2 feem ntau, feem.

Daim duab 7,Daim duab 9qhia tias tsis muaj cov yam ntxwv zoo sib xws nrog cov phiaj xwm sib txawv rau ob qhov sib txawv ntawm cov khaubncaws sab nraud povtseg ntawm GSM zoo sib xws.Ib qho piv txwv yog 12 txheej ntawm 200 GSM Kevlar thiab 6 txheej ntawm 400 GSM Kevlar.Ob qho piv txwv no muaj tag nrho ntawm 2400 GSM Kevlar txhua.Thaum muab piv rau ob qhov qauv sib txawv, lawv tsis txo qhov kev ncua deb ntawm qhov projectiles los ntawm qhov sib xws.Cov kev sib raug zoo sib xws thiab cov lus xaus tuaj yeem pom los ntawm 3 txheej ntawm 400 GSM Kevlar thiab 6 txheej ntawm 200 GSM Kevlar.Txhua qhov xwm txheej no muaj 1200 GSM cov qauv, tab sis tsis muaj cov yam ntxwv zoo sib xws hauv cov txiaj ntsig.

Qhov nruab nrab nkhaus rau qhov projectiles 1 thiab 2, qhia hauvDaim duab 4, qhia tias qhov projectiles yuav nres nrog 6 thiab 7 ntau ntawm 3 txheej ntawm 200 GSM Kevlar, raws li (xws li 18 thiab 21 txheej ntawm 200 GSM Kevlar).Muaj ib qho kev sib piv uas kwv yees li ob npaug ntawm cov txheej ntawm Kevlar uas xav tau, piv rau Kevlar puas tsuaj tiag tiag kom nres qhov projectiles.Nrog 18 thiab 21 txheej ntawm 200 GSM Kevlar, nws yuav ua rau cov phiaj xwm 1 thiab 2 nres hauv kwv yees li 9 thiab 10 txheej ntawm Kevlar.Tus naj npawb ntawm cov khaubncaws sab nraud povtseg no cuam tshuam nrog cov txheej txheem ntawm Kevlar uas cov khoom lag luam muaj Kevlar-tsuas yog cov mos txwv pov thawj vests muaj.

Qee cov khoom rau koj siv:

https://www.senkencorp.com/bullet-proof-vest/military-vip-police-concealable-light-weight.html

https://www.senkencorp.com/bullet-proof-vest/high-quality-military-use-tactical-armor.html

https://www.senkencorp.com/bullet-proof-vest/military-ballistic-nij-iia-pe-or-kevlar.html

https://www.senkencorp.com/bullet-proof-vest/bulletproof-vest-fdy3r-sk15.html

Video rau koj siv:

https://www.youtube.com/watch?v=Zc-HYAXSaqs

https://www.youtube.com/watch?v=YtBaebU7CTw

5. Cov lus xaus

Kev sib piv ntawm 160 GSM, 200 GSM thiab 400 GSMKevlarnyob rau hauv cov kev cuam tshuam ballistic tau ua nrog cov kev sim ballistic ua nrog 9 mm Parabellum mos txwv thiab nrog ntau tus lej ntawm Kevlar txheej.Nws tau pom tias ob peb txheej ntawm Kevlar tsis muaj txiaj ntsig hauv kev tso tseg cov phiaj xwm, tab sis theej yuam cov phiaj xwm taug kev mus ntxiv rau hauv cov gel ballistic.Tsuas yog thaum tus naj npawb ntawm cov khaubncaws sab nraud povtseg tau nce, qhov txo qis hauv qhov projectile nkag mus rau hauv ballistic gel tau pom.Yog vim li cas rau qhov ncov no hauv kev nkag mus, tshwj xeeb tshaj yog nrog cov hollow point projectiles, yog vim lub qhov ntim nrog Kevlar cov khoom thiab ua rau nws ua tau raws li FMJ projectile.Zoo sib xws qhov nruab nrab qhov tsis zoo gradients tau pom ntawm FMJ thiab hollow point projectiles, thaum lub ncov tau mus txog.

Summary ntawm cov nyiaj pab ntawm daim ntawv no, nws yuav xaus lus:

• 1)

• Kev ua tau zoo ntawm cov txheej txheem sib txawv ntawm 160 GSM, 200 GSM thiab 400 GSM qib ntawm Kevlar txheej nrog ballistic gel tau tshawb xyuas, thiab nws tau pom tias 200 GSM Kevlar tau ua haujlwm zoo dua rau kev tso tseg 9 hli Parabellum projectile.

• 2)

• Nws tau pom tias tsis muaj kev sib raug zoo ntawm ob hom Kevlar sib txawv nrog qhov hnyav sib txawv (xws li 200 GSM thiab 400 GSM Kevlar), muab tso rau hauv ib txoj hauv kev uas lawv muaj qhov hnyav ua ke.

• 3)

• Plaub yam sib txawv ntawm 9 mm Parabellum mos txwv tau sim, thiab lawv qhov tob tob rau hauv cov gel ballistic tau txheeb xyuas rau ntau txheej ntawm Kevlar.

• 4)

• Nws tau soj ntsuam tias rau 9 hli Parabellum mos txwv, uas feem ntau siv thoob ntiaj teb, 21 txheej ntawm 200 GSM Kevlar yuav tsum yog qhov tsawg kawg nkaus kom nres qhov projectile.Nws raug pom zoo tias, raws li kev ceev faj txog kev nyab xeeb, muaj kev nyab xeeb ntxiv yog suav nrog vim qhov kev nkag mus rau qhov projectile profile.

Raws li cov txiaj ntsig tau hais los saum toj no rau cov yam ntxwv ntawm Kevlar cov khaubncaws sab nraud povtseg ntawm qhov hnyav sib txawv, nws cia siab tias cov yam ntxwv no tuaj yeem siv los tsim thiab tsim cov tsho tiv thaiv zoo thiab muaj txiaj ntsig zoo.

Cov qauv dav dav uas xav tau ob npaug ntawm cov txheej txheej ntawm Kevlar yog xav tau piv rau qhov tseeb ntawm cov khaubncaws sab nraud povtseg, yuav tsim nyog los tshawb nrhiav hauv kev tshawb fawb ntxiv nrog cov mos txwv sib txawv.Cov kev tshawb fawb yav tom ntej kuj tseem tuaj yeem qhia txog qhov kev nkag mus rau qhov me me caliber projectiles thiab mos txwv muaj ntawm Kevlar piv rau cov mos txwv 9 mm Para.Ib yam li ntawd, kev tshawb fawb yav tom ntej yuav tuaj yeem txheeb xyuas seb cov mos txwv sib txawv thiab cov phiaj xwm sib txawv li cas nkag mus rau 200 GSM Kevlar xws li Kevlar siv tsuas yog hauv cov tsho tiv thaiv mos txwv.Nrog rau cov yam ntxwv pom nrog lub hollow point projectiles nkag mus tob rau hauv lub ballistic gel, tom qab lub hollow point yog thaiv nrog Kevlar, kev tshawb fawb yav tom ntej yuav tso cai rau txheeb xyuas seb cov txiaj ntsig zoo sib xws yuav raug ntsib hauv qhov xwm txheej uas qhov projectile nkag mus rau khaub ncaws, ua ntej nkag mus rau hauv lub cev. .

Kev lees paub

Cov kev tshawb fawb tau ib feem nyiaj los ntawm covNational Research Foundation.Cov tuam txhab thiab cov tib neeg hauv qab no tau lees paub rau lawv txoj kev pab, kev taw qhia, thiab kev siv ntawm lawv cov chaw, raws li cov tsiaj ntawv: Borrie Bornman, John Evans, Cov Kev Ntsuas Hluav Taws Xob thiab Chaw Ua Haujlwm (+27 39 315 0379;fcatc1@webafrica.org.za), Henns Arms (Tus Neeg Muag Khoom Phom thiab Phom Phom;www.hennsarms.co.za;info@hennsarms.co.za), River Valley Farm & Nature Reserve (+27 82 694 2258;https://www.rivervalleynaturereserve.co.za/;info@jollyfresh.co.za), Marc Lee, David thiab Natasha Robert, Simms Arms (+27 39 315 6390;https://www.simmsarms.co.za;simmscraig@msn.com), Sab Qab Teb Ntuj Kev Ua Haujlwm (+27 31 579 4141;www.skyops.co.za;mike@skyops.co.za), Louis thiab Leonie Stopforth.Nws yuav tsum raug sau tseg tias cov kev xav ntawm cov neeg sau ntawv hauv daim ntawv no tsis tas yuav yog cov kev xav ntawm cov tuam txhab, cov koom haum thiab cov tib neeg tau hais los saum toj no.Cov kws sau ntawv tsis tau txais nyiaj txiag tau txais txiaj ntsig rau qhov kev xeem ua.