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Until now, it has proven tricky for blast sensor technology to record blast pressure impulse (pressure over time) in extreme harsh environments. There has also been a lack of clarity in measurements between the impact from air pressure and debris. Current options on the market are unprotected in harsh environments, and therefore are prone to damage. A new innovation overcomes these limitations and broadens measurement possibilities, providing a sturdy solution that can be longer-lasting – reducing costs and streamlining equipment needed.
Many fields require the ability to measure the safety of buildings, structures, and materials during explosive impact with a high degree of accuracy and reliability. However, the current equipment used during test explosions to perform these measurements are sensitive and delicate pieces of equipment. These can be piezoelectric pressure sensors or piezoresistive transducers – which convert the level of pressure recorded to an electrical signal that can be read by computer equipment. These are prone to damage if exposed to debris during explosions and are costly to replace.
The current equipment used also has capability limitations. During a blast, an isolated sensor cannot differentiate between the effects of the pressure waves and the debris propelled by the fast-moving air.
A more robust solution was needed that would not be damaged during explosions, and to overcome the capability limitations of current options on the market.
Developed by engineers at the UK’s Defence Science and Technology Laboratory (Dstl), the Blast Pressure Impulse Gauge technology provides a solution to these key issues. This innovative technology unlocks new measurement capabilities: both measuring blast impulse pressure over time (as opposed to measuring peak pressure), and enabling users to differentiate between blast air pressure (from an explosion) and the impact of particles and fragments (debris).
Blast pressure impulse is an important measurement to capture as this is a key factor in damage caused by explosions. This measurement is enabled by incorporating multiple COTS (commercial off the shelf) pressure sensors in the technology. In addition, the impact of high velocity debris can be just as, if not more, damaging than the blast itself. This technology improves precision in blast measurements by removing ambiguity between the effects of air pressure and the impact of debris on the object or building of interest that is being tested. This is a new measurement specification that has not been possible before.
This technology also ensures the survival and protection of sensitive measurement equipment in these potentially extreme environments. This robust innovation can be used repeatedly over multiple explosion tests – mitigating the cost and equipment requirements of the previous technologies for this purpose.
Users can benefit from the hardy and longer lasting pressure gauge, ensuring accuracy and repeatability in testing. Both enhanced measurement capabilities and lower costs can be gained.
This includes EOD – bomb disposal. Blasting operations must be conducted without putting the involved personnel and the surroundings at risk.
This also includes blast testing for under-vehicle explosions. This technology improves user understanding of performance to ensure that occupants would remain safe during explosive impact.
Users can ensure equipment meets specifications to keep users and bystanders safe. The testing process can measure the explosion level and risk of materials in industrial or factory settings, and can validate the safety of the equipment being tested and its performance level.
If you would like to discuss this technology or collaboration opportunities with our team, please get in touch below.
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© Ploughshare Innovations Ltd 2025. Registered in England and Wales No. 04401901