Controlled Explosions

Controlled explosions are the deliberate release of explosive energy under engineered conditions to produce a predictable effect while limiting unintended damage. Engineers regulate factors such as explosive placement, confinement, initiation timing, and surrounding materials so that rapidly expanding gases generate directed pressure waves and controlled rock or structural fracture. This approach supports mining, excavation, construction, demolition, quarrying, and specialized engineering research. Careful design, modeling, monitoring, and safety procedures help control vibration, air overpressure, debris, and environmental impacts, making controlled explosions valuable when conventional mechanical methods are inefficient or impractical.

Controlled Explosions - Related Videos

Research

JoVE Journal - Engineering
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Research and Development of High-performance Explosives

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Cited by 2 •

2016

Developmental testing of high explosives for military applications involves small-scale formulation, safety testing, and finally detonation performance tests to verify theoretical calculations. This paper will share typical development tests associated with the measurement of detonation velocity and detonation pressure.

Research

JoVE Journal - Chemistry

Minimum Burning Pressures of Water-based Emulsion Explosives

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2017

We present an apparatus based on hot-wire ignition in a pressurized enclosure and an associated methodology to measure the minimum pressure required to induce sustained combustion in water-based emulsion explosives. This method improves product characterization to allow one to use them more safely during pumping and mixing operations.

Coulomb Explosion Imaging as a Tool to Distinguish Between Stereoisomers

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Cited by 5 •

2017

For small chiral species, Coulomb Explosion Imaging provides a new approach to determine the handedness of individual molecules.

Research

JoVE Journal - Engineering
Free Sample

Standardized Method for Measuring Collection Efficiency from Wipe-sampling of Trace Explosives

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Cited by 7 •

2017

Optimized sampling protocols and the development of new wipe materials can be facilitated by standardized measurements of collection efficiency from wipe-sampling. Our approach for sampling trace explosives uses an automated device to control speed, force, and distance during wipe-sampling followed by extraction of collected explosives.

Education

JoVE Core - Electrical Engineering

Control System Problem

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2024

In an open-loop system, such as a basic thermostat, the poles of the transfer function influence the system's response but do not determine its stability. However, when feedback is introduced to form a closed-loop system, such as an advanced thermostat that adjusts heating based on room temperature, stability is governed by the new poles of the closed-loop transfer function. When forming a closed-loop system, issues can arise if the poles cross into the unstable region, leading to potential...

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