[{"@context":"https:\/\/schema.org\/","@type":"Article","@id":"https:\/\/www.arnnex.cz\/balisticka-ochrana\/#Article","mainEntityOfPage":"https:\/\/www.arnnex.cz\/balisticka-ochrana\/","headline":"Balistick\u00e1 ochrana","name":"Balistick\u00e1 ochrana","description":"Ochrana t\u011bla p\u0159ed \u00fatoky je zn\u00e1m\u00e1 ji\u017e odnepam\u011bti. D\u0159\u00edve lid\u00e9 vyu\u017e\u00edvali jako ochranu r\u016fzn\u00e1 brn\u011bn\u00ed. N\u011bco jako nepr\u016fst\u0159eln\u00e9 vesty se za\u010daly objevovat u\u017e v\u00a0obdob\u00ed I. Sv\u011btov\u00e9 v\u00e1lky. Piloti byli chr\u00e1n\u011bni pomoc\u00ed kovov\u00fdch desti\u010dek, pohybliv\u011b spojen\u00fdch k\u00a0sob\u011b. \u0160lo ale o velmi t\u011b\u017ek\u00e9 brn\u011bn\u00ed, a proto se neujalo. Za II. Sv\u011btov\u00e9 v\u00e1lky pokra\u010dovali ve v\u00fdvoji. \u00a0 Vesta &hellip; <div class=\"link-more\"><a href=\"https:\/\/www.arnnex.cz\/balisticka-ochrana\/\" class=\"more-link\">Read More<span class=\"screen-reader-text\"> \"Balistick\u00e1 ochrana\"<\/span><\/a><\/div>","datePublished":"2019-12-19","dateModified":"2023-05-02","author":{"@type":"Person","@id":"https:\/\/www.arnnex.cz\/author\/#Person","name":"","url":"https:\/\/www.arnnex.cz\/author\/","identifier":1,"image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/f3f77307dfb7a1a6ad06d8ef95ed6ed296a0507575d3814dc8c8630c3a7fa477?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/f3f77307dfb7a1a6ad06d8ef95ed6ed296a0507575d3814dc8c8630c3a7fa477?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"arnnex.cz","logo":{"@type":"ImageObject","@id":"\/logo.png","url":"\/logo.png","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/www.arnnex.cz\/wp-content\/uploads\/img_a364507_w4387_t1577279708.jpg","url":"https:\/\/www.arnnex.cz\/wp-content\/uploads\/img_a364507_w4387_t1577279708.jpg","height":0,"width":0},"url":"https:\/\/www.arnnex.cz\/balisticka-ochrana\/","about":["V\u011bda"],"wordCount":508,"articleBody":"Ochrana t\u011bla p\u0159ed \u00fatoky je zn\u00e1m\u00e1 ji\u017e odnepam\u011bti. D\u0159\u00edve lid\u00e9 vyu\u017e\u00edvali jako ochranu r\u016fzn\u00e1 brn\u011bn\u00ed. N\u011bco jako nepr\u016fst\u0159eln\u00e9 vesty se za\u010daly objevovat u\u017e v\u00a0obdob\u00ed I. Sv\u011btov\u00e9 v\u00e1lky. Piloti byli chr\u00e1n\u011bni pomoc\u00ed kovov\u00fdch desti\u010dek, pohybliv\u011b spojen\u00fdch k\u00a0sob\u011b. \u0160lo ale o velmi t\u011b\u017ek\u00e9 brn\u011bn\u00ed, a proto se neujalo. Za II. Sv\u011btov\u00e9 v\u00e1lky pokra\u010dovali ve v\u00fdvoji. \u00a0Vesta byla vyrobena z\u00a0pr\u00e1v\u011b vynalezen\u00e9ho nylonu a byla vyztu\u017eena kovov\u00fdmi desti\u010dkami. P\u0159esto\u017ee v\u00e1ha ji\u017e takov\u00e9to vesty byla ni\u017e\u0161\u00ed, st\u00e1le \u0161lo o pom\u011brn\u011b t\u011b\u017ekou ochranu. Zlom nastal a\u017e na po\u010d\u00e1tku 70.let, kdy bylo p\u0159edstaveno vl\u00e1kno Kevlar od spole\u010dnosti DuPont. N\u00e1sledoval vznik dal\u0161\u00edch nov\u00fdch materi\u00e1l\u016f.P\u0159ev\u00e1\u017en\u00e1 v\u011bt\u0161ina materi\u00e1l\u016f pro mechanicky odoln\u00e9 textilie je polymern\u00edch a vykazuj\u00ed speci\u00e1ln\u00ed vlastnosti, dle \u00fa\u010delu pou\u017eit\u00ed. U nepr\u016fst\u0159eln\u00fdch vest je d\u016fle\u017eit\u00e1 energetick\u00e1 absorpce, mez pevnosti a tuhost materi\u00e1lu. Dnes se vyr\u00e1b\u011bj\u00ed r\u016fzn\u00e9 kategorie vest, dle jejich ochrany. Zjednodu\u0161en\u011b ji m\u016f\u017eeme rozd\u011blit na ochranu proti \u201en\u00edzko\u201c rychlostn\u00ed kulce (se zaoblenou hlavou), kde je dostate\u010dn\u00e1 textiln\u00ed ochrana, kter\u00e1 kulku deformuje, a\u017e ji zastav\u00ed a proti vysokorychlostn\u00ed kulce (s ostrou hlavou), kde nelze kulku zastavit pouze textili\u00ed, jeliko\u017e kulka velmi snadno proch\u00e1z\u00ed velmi vl\u00e1kny d\u00edky hrotu.KevlarJde o aromatick\u00fd polyamid, kdy vl\u00e1kno je vyroben\u00e9 z\u00a0polyamidu s\u00a0dlouh\u00fdm uhlovod\u00edkov\u00fdm \u0159et\u011bzcem, kter\u00fd obsahuje aromatick\u00e1 j\u00e1dra. Uv\u00e1d\u00ed se, \u017ee tento textiln\u00ed materi\u00e1l je 5x pevn\u011bj\u0161\u00ed ne\u017e ocel p\u0159i stejn\u00e9 hmotnosti. D\u00e1le m\u00e1 tento materi\u00e1l vysokou teplotn\u00ed odolnost a vysok\u00fd Yong\u016fv modul pru\u017enosti (\u0159\u00edk\u00e1 n\u00e1m, jak moc se vl\u00e1kno deformuje v tahu). Pr\u00e1v\u011b kevlar je asi nejv\u00edce vyu\u017e\u00edvan\u00fd materi\u00e1l v\u00a0balistick\u00e9 ochran\u011b, p\u0159esto\u017ee existuj\u00ed i jin\u00e9 alternativy.Po\u017eadavky na ochranuVesta mus\u00ed zastavit nejen vyst\u0159elen\u00fd projektil, ale tak\u00e9 minimalizovat trauma efekt (po\u0161kozen\u00ed t\u011bla v\u00a0d\u016fsledku energetick\u00e9ho n\u00e1razu projektilu). Tak\u00e9 by m\u011bla b\u00fdt co nejv\u00edce lehk\u00e1 a komfortn\u00ed p\u0159i no\u0161en\u00ed. A pro\u010d je vesta p\u0159ev\u00e1\u017en\u011b z\u00a0polymern\u00edch materi\u00e1l\u016f? Kdy\u017e vyst\u0159elen\u00fd projektil naraz\u00ed na vestu, za\u010dne si razit cestu d\u00e1l skrz materi\u00e1ly (po\u010det vrstev textili\u00ed z\u00e1vis\u00ed na tom, jak bude vesta pou\u017eita). Vlivem pru\u017enosti materi\u00e1lu je \u010d\u00e1ste\u010dn\u011b energie rozpt\u00fdlena do plochy. T\u00edm, jak kulka nar\u00e1\u017e\u00ed do jednotliv\u00fdch vl\u00e1ken se deformuje (zplo\u0161\u0165uje) a brzd\u00ed. Textiln\u00ed materi\u00e1l m\u00e1 tedy pot\u0159ebn\u00e9 parametry pro zastaven\u00ed \u010di zbrzd\u011bn\u00ed projektilu, a nav\u00edc je velmi lehk\u00fd a poddajn\u00fd oproti kovov\u00fdm pl\u00e1t\u016fm. V\u00a0p\u0159\u00edpad\u011b vysokorychlostn\u00edch kulek je k\u00a0zastaven\u00ed (deformaci) zapot\u0159eb\u00ed dal\u0161\u00ed vrstva jako nap\u0159\u00edklad keramick\u00e9 pl\u00e1ty.\u00a0                                                                                                                                                                                                                                                                                                                                                                                        3.7\/5 - (9 votes)        "},{"@context":"https:\/\/schema.org\/","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Balistick\u00e1 ochrana","item":"https:\/\/www.arnnex.cz\/balisticka-ochrana\/#breadcrumbitem"}]}]