RETTmobil 2018

••• 11 ••• Innovationen Defusing World War bombs more safely Project “DEFLAG”: Scientists use a laser-based process to deactivate dangerous weapons U nexploded bombs are and will remain a serious threat to civil security in many parts of the world. To be able to deactivate these bombs more safely in the future, the Laser Zentrum Hanno- ver e.V. (LZH) is working on a laser- based defusing together with an industry partner and the Kampf- mittelräumdienst Hamburg (KRD). 60,000 tons are still in the ground The challenges and dangers of conventional defusing methods are enormous and still highly topi- cal: The amount of weapons hid- den underground in Germany is difficult to predict, but according to KRD estimates, about 60,000 tons are still in the ground. During the defusing process there is an extremely high risk of unwanted detonation, especially in complex ignition systems. Often blowing up the dud remains as a last resort. In the DEFLAG project, the pro- ject partners LZH and the indus- try partner are working on a pro- cedure to defuse the bombs by targeted deflagration. In contrast to a detonation, a lower pressure wave is created during deflagra- tion and the explosive is con- verted only to a small extent. The project partners notch the bomb casing with laser radiation and trigger the deflagration in a sec- ond step. In cooperation with the KRD, a field-compatible and auto- mated processing platform is to be created – to safely defuse even dangerous unexploded bombs. Essential for the project is not to exceed a critical temperature limit on the underside of the ma- terial, to drive out material from the ablation groove and to en- sure process mobility. Scientists at the LZH have so far been able to notch up to 25 mm thick steel sheets using a combined melting and flame removal process. In do- ing so, they achieve an ablation depth of up to 16 mm with an ex- ternal gas supply. Background The DEFLAG project “Safe Defla- gration of Duds by Laser Technol- ogy” is being funded by the Ger- man Federal Ministry of Education and Research within the scope of the Federal Administrations “Re- search for Civil Security 2012-2017” programme. The fire department Hamburg / bomb disposal team is the Associated Partner. As an independent, non-profit research institute, the Laser Zen- trum Hannover e. V. (LZH) stands for innovative research, develop- ment and consulting. The LZH is supported by the Lower Saxony Ministry for Economics, Labour and Transport and is dedicated to the selfless promotion of applied research in the field of photonics and laser technology. With a laser-based process, the deactivation of unexploded bombs is to become safer. Photo: LZH Anzeige ZZZ KRYHU DW LQIR#KRYHU DW 7UDJHQWLVFK PLW HOHNWURPRWRULVFKHU %HODGHKLOIH IU DOOH JlQJLJHQ 5ROO ,Q )DKUWUDJHQ 'DPLW DXFK GLH :LUEHOVlXOH GHU +HOIHU JHVFKW]W ZLUG 1DWUOLFK PLW /XIWIHGHUXQJ +|KHQHLQVWHOOXQJ XQG 4XHUYHUVFKLHEXQJ +DOOH 6WDQG +29(5%2$5' Arbeitsgemeinschaft der Feuerwehren in Deutschland Deutsches Feuerwehr-Museum Fulda e.V. www.dfm-fulda.de Halle: R • Stand: Bühne GSG Arbeitsschutz Geilenkothen Fabrik für Schutzkleidung GmbH www.gsg-schutzkleidung.de Halle: F • Stand: 1219 Freigelände 10 Hoverboard www.hover.at Halle: 2 • Stand: 204 Johanniter-Unfall-Hilfe e.V. Landesverband Hessen/Rheinland-Pfalz/Saar www.johanniter.de Halle: 2 • Stand: 206 SmartEm GmbH www.smartem.de Halle: G • Stand: 1309 Nichtaussteller: T.ESS GmbH www.tessmunich.com Top Trock Handelsgesellschaft mbH www.toptrock.com Tourismus Fulda www.tourismus-fulda.de Messetelegramm Anzeige