File:Pannzerung plastische deformation.png
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Summary
| Description |
English: Plastic deformation of steel armour plate as a result of projectile impact. When combining steel armour with passive fire protection materials, even if they have good impact resistance at ambient, it is advisable to consider how brittle and/or compressible passive fire protection materials are once stressed by fire, where such plastic deformation can knock material loose. The combined use of any armour material together with passive fire protection materials must be proven fit for purpose first by fire testing in order to eliminate negative consequences. Under fire conitions, steel first expands and then loses its strength. That means unfireproofed steel armour can tear a fire barrier that is stressed by fire apart and also not work to stop projectiles because the unfireproofed steel armour softens within minutes of the start of a fire. Combustible armour incapable of passing ASTM E136 can actually add fuel to a fire, right on or in the barrier, which would be equally catastrophic. Everything has to be tested together in full scale fire testing to make sure it works as intended when combined.
Deutsch: Panzerstahl Plastizität durch Projektilbeschuss. Wenn man Panzerungen mit baulichen Brandschutzmaterialien kombiniert, selbst wenn diese bei Zimmertemperatur sehr widerstandsfähig sind, ist es sachdienlich die Widerstandsfähigkeit der Brandschutzmaterialien nach oder bei Brand- oder Hitzeeinwirkung zu berücksichtigen, da derartige Deformationen das Brandschutzmaterial beeinträchtigen können indem Material gequetscht, aufgerissen oder losgeschlagen werden kann. Auch muss der Einsatz aller Panzermaterialien zusammen mit Brandschutzmaterial einer Brandprüfung unterzogen werden um die Möglichkeit negativer Konsequenzen auszuschließen. Stahl expandiert zuerst im Feuer und verliert schnell danach seine Härte. Das bedeutet, dass Panzerstahl, oder auch Baustahl, ohne brandschutztechnische Bekleidung, kann eine Brandwand, insbesondere unter Hitzeeinwirkung aufreißen und auch nicht länger Projektilschutz bieten, da der Schutz innerhalb Minuten im Feuer zu sehr erweicht um zu funktionieren. Brennbare Panzerungen, die nicht in der Lage sind eine ASTM E136 Prüfung zu bestehen, können ohne brandschutztechnische Bekleidung nicht nur schmelzen, sondern auch brennen - mit ebenso katastrophalen Auswirkungen wie Stahlpanzerung. Alles muss vorher zusammen in eine Bauteilprüfung. |
| Date | |
| Source | Own work |
| Author | Achim Hering |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 04:41, 18 May 2018 | | 5,963 × 6,782 (50.63 MB) | Achim Hering | {{Information |description ={{en|1=Plastic deformation of steel armour plate as a result of projectile impact. When combining steel armour with passive fire protection materials, even if they have good impact resistance '''at ambient''', it is advisable to consider how brittle and/or compressible passive fire protection materials are once stressed by fire, where such plastic deformation can knock material loose. The combined use of any armour material together with passive fire protection m... |
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