effective fragment

effective fragment

[ə¦fek·tiv ′frag·mənt]
(ordnance)
In terminal ballistics, a fragment whose mass, velocity, and form, upon impact with the target are such as to enable the fragment to accomplish the desired effect.
References in periodicals archive ?
Bearing in mind that the gunner's intention is to cover as wide a target area with effective fragments, when the payload detonates the HE M107 body produces an unpredictable number and spread of fragments that may vary in size from large chunks to useless dust.
This type of steel is guaranteed to break up into a large number of small but effective fragments that will travel a more predictable distance from the point of detonation.