Friction sensitiveness, testing

Pendulum, Friction, Apparatus. See under Friction Sensitivity Tests in Vol 6, F204-L to F206-L... 

Pendulum Friction Device Test. See under Friction Sensitivity Tests... 

Marshall 2(1917) Falling Weight Test (Lenze) (p 423) Friction Sensitivity Test (423) Sensitiveness to Detonation (429) Sensitiveness to Heat (434) Ignition Temperature (434) Heat of Explosion (440) Trauzl Test (469) Strength by Ballistic Pendulum (473) Velocity of Detonation by Dautriche Method (479) Brisance Meter of Hess (495)... 

Frictional Impact Test. See under FRICTION SENSITIVITY TESTS in Vol 1, p XIII... 

Friction Sensitivity Tests (Qualitative). Two French tests are briefly described in Vol 1 of Encycl, p XIII. They are fully described in Refs 7 10 listed on p XIV. One Ger test is briefly described on p XIII and more fully in Refs 1, 2 6 listed on p XIV. The Brit test of Dupre is listed on p XIII, but its description is given in BurMinesBull 346(1931). 

Explosive Sampling, Inspection and Testing, Friction Sensitivity Test Method T 510.1, Department of Defense, USA. 

Other Friction Sensitivity Tests are listed and briefly descirbed in Vol 1 of Encycl, p XIII... 

Explosive substances can therefore be classified into three main groups using the results of the impact and friction sensitivity tests. These classes are very sensitive , sensitive and comparatively insensitive . By using the results of the tests carried out on the Rotter Impact Machine, explosive materials can be categorized into these three classifications as shown in Figure 4.2. 

FRICTION SENSITIVITY TESTS(Reibungsempfiudlichkeit Proben, in Ger) (Essais h la friction, in Fr)... 

British Tests. See Physical Tests for Determining Explosive and Other Properties Vol 1 and specifically the following British tests a)Ballistic Pendulum Test, p VII b)Exudation(ot sweating) Tests, p XI c)F7 lest(Figure of Insensitiveness Test) p XII Fragment Gun, p XII d)Friction Sensitivity Tests, p XIII e)Hopkinson s Pressure Bar Test, p XVI and i)Silvered Vessel Test or Waltham Abbey Silver Vessel Test, p XXIV... 

Expls that do not freeze when exposed to temps as low ss 35°F(+ 1.67°) ore called LF(low-freezing), those not freezing at 0°F(—17.78°) are ELF(extra low-freezing) and those not freezing at lower temps are NF(non-freezing). Ref US BureauMinesBull 346, (1931),27—29 Frictional Impact Sensitivity Test. See under Friction Sensitivity Teat Friction Pendulum Tost. See under Friction Sensitivity Tests... 

FRICTION SENSITIVITY TESTS(Reibungsempfindlichkeit Pro ben, in Ger) (Essais i la friction, in Fr) (Pruebas al senaibilidnd al rozamiento, in Span). The tests may be divided into qualitative and quantitative types... 

Fig. 3.120 Test results from small scale gap and BAM friction sensitivity tests...

Fig. 3.121 Test results of mixtures of KC104 - A1 in the drop hammer sensitivity and friction sensitivity tests...

Suzuki, Kato, Fukuda et al. have conducted drop hammer sensitivity tests, friction sensitivity tests, and card gap tests on composite propellants that include nitramine 18 . The authors have conducted safety evaluations in cooperation with engineers from Nippon Oils and Fats Corporation to prove that no detonation propagation exist in composite propellants. We used new evaluating methods 11 131. The outline of our study follows. As new methods were constantly being adopted for the study, our tests were conducted on trial-and-error basis. All of the tests described here are not necessary for the evaluation of the detonating feature in composite propellants. 

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