Cylinder test long-term

B) US Bullet Impact MetbodfModification). According to Stein Pollack(Ref 16,p 1), the nipple bomb described above is not very satisfactory because the bullet strikes the curved surface thereby introducing undesirable variables which are inherent in a curved surface. To eliminate this problem a new bomb was designed which presents a flat surface perpendicular to the line of fire. This new bomb, however, retains a major deficiency of impact testing in that the explosive reaction is only described qualitatively in terms of detonation complete or incomplete), burning, smoke,or unaffected. The new bomb consist s of a metal cylinder 3 long and 2 diam. The ends of the bomb are closed... 

Fig. 8.7. View of the test equipment for long-term load plate tests. Load is applied over a lever arm, the steel container is covered with a glass cylinder, temperature is controlled and measured continuously. Settlement in the stmcture is recorded over a displacement gauge. This test equipment enables miming tests of > 10,000 h. Reaction of oxidative degradation, stress crack formation on the protective effect, influence of swelling chemicals or creep behaviour can be investigated...

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