The speed at which an explosive shock wave travels through an explosive substance after initiation is known as the Velocity of Detonation (VoD).
Usually, it is expressed in feet per second (fps) or meters per second (m/s). Numerous factors, such as the explosive material’s density, chemical makeup, and confinement, affect the VoD. The VoD is also influenced by variables like the charge temperature and diameter.
The velocity of detonation (VoD) shown by various explosives varies, ranging from several thousand meters per second to several kilometres per second.
Generally speaking, when charge temperature rises, so does the influence of charge temperature, whereas hole diameter generally decreases with VoD.
The VoD and detonation pressure of explosives are directly influenced by four key factors:
- Number of moles of gaseous detonation products per gram of explosive
- Average molecular mass (g/mol)
- Magnitude of heat release during detonation
- Loading density (g/cc)
VoD measurements assist guarantee safety, accuracy, and efficiency in a variety of operations, making them an essential tool for industries and applications involving explosives and energetic materials.
