Velocity — Critical and Limiting Diameter Relationships

Detonation Velocity-Critical and Limiting Diameter Relationships 

Critical diameter is the minimum diameter at which a steady regime of detonation is possible for an explosive-charge properly initiated. This diameter is influenced by density of chargej its degree of confinement, particle size distribution, and some other factors 

A steady high-order velocity of detonation reaches its lowest value at critical diam and is known as critical detonation velocity. Below the critical diam value of charge there is either failure or so-called low-regime of detonation which usually does not proceed at steady state 

With an increase of charge diameter, velocity increases until it reaches a certain limiting value and either remains steady or starts to decrease. This diameter is known as limiting diameter (predel nyi in Rus) and the corresponding velocity is called limiting (or maximum velocity of detonation) 

For determination of critical diameters, the test s described under Detonation Velocity-Charge Diameter and Density Relationships, Experimental Procedures can be used 

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Critical Diameter and Limiting Diameter-Detonation Velocity Relationships. See Detonation Velocity-Critical and Limiting Diameter Relationships... 

Detonation Velocity-Confinement and Obturation Relationship (pp D657-L to D660-L) Detonation Velocity - Critical and Limiting Diameter Relationship (p D66Q-L R)... 

Detonation velocity-critical and limiting diameter relationship 4 D660... 

Detonation-Critical and Limiting Charge Densities, Charge Diameters and Detonation Velocity Relationships. See under DETONATION VELOCITY-CHARGE DIAMETER-DENSITY RELATIONSHIPS... 

In detonation of weak explosives like mixtures contg large amounts of nonexplosive ingredients (such as AN, K chlorate, carbonaceous material, etc), there also are critical and limiting densities, diameters and detonation velocities, but curves of their relationships have different shapes than those for HE s... 

Relationships between diameters and particle size) 287-89 (Influence of confining medium on limiting detonation velocity and limiting critical diameters) 289-95 (Influence... 

Limiting (or Critical) Charge Density-Diameter of Explosive Charges. See Detonation Velocity-Charge Diameter and Density Relationship in Encycl 4 (1969), D641-L to D656-L... 

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