Unexploded bomb successfully defused with laser

Share this on social media:

A 500-pound unexploded bomb has successfully been defused using a laser in a field trial that marks the end of the DELFAG project.

The project was undertaken by the Laser Zentrum Hannover (LZH), its spin-off company Laser on Demand and the Hamburg ordnance clearance service.

Within the project, a defusal method was developed in which a 2kW solid-state laser is used to create a notch along the casing of a bomb, which is then deflagrated in a controlled way.

 

The laser-based approach could provide more security for explosive ordnance disposal technicians in the future.

In the field trial, instead of a large detonation, the shell exploded along the predetermined notch, with only a small part of the explosive actually exploding. The chemical detonator then popped out of the bomb casing (pictured below).

The otherwise unpredictable chemical detonator simply popped out after the controlled ignition with the laser. (Photo: LZH) 

A low-cost, 3D-printed laser processing head with standard optical components was used in the trial, developed by the LZH and Laser on Demand to withstand exposure to strong heat and pressure.

Next step: Underwater use

The promising results of the field trial will now be the basis for further research projects. For example, the partners want to adapt the process and the system technology for underwater use, as more than 1.5 million tonnes of World War II ammunition is still suspected to be in the North and Baltic Seas.

Navigation

Navigation

Navigation

Navigation

Navigation

Navigation

Jan Keuntje and Peter Jäschke have developed a macroscopic finite element model to help establish laser cutting in serial CFRP component production

29 September 2022

Lasers offer a non-contact, fast, flexible and cost-effective tool for cutting sheets across a range of industries. (Shutterstock/Parilov)

04 October 2022

A high-power laser cleaning steel. (Image: University of Bristol)

10 November 2021

Integration of AI into laser cutting and welding could increase their overall efficiency by 25 per cent. (Image: Fraunhofer ILT)

07 November 2022

The new system features a 24kW disk laser capable of cutting up to 80% more metal sheets per hour. (Image: Trumpf)

14 October 2022

Learn about some of the latest technology developments taking place in the exciting field of tube processing

12 October 2022