Friction impact test

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

II) Bullet Impact Test Bullet Frictional Impact Test Bullet Sensitivity Test or Rifie Bullet Test(Called Shooting Test in Ref 1). The purpose of tins test is to Jeter aloe to what extent various ammunition(especially bombs,... 

Molex no s 2 3 are physical mixts of AN 52—84, K perchlorate 0—20, DNT oil 7—12, baked cork 1—10, A1 powd 5—7 Ca carbonate 1%. They exhibited satisfactory sensitivity to impact, friction, flame initiation, and had excellent stability. Philips (Ref 4) reported on tests of Molex B and BB , manufd by the National Explosives Co. They are described as physical mixts of AN 80.77—85.06, flake A1 6.02—6.10, DNT oil 4.32—5.84, activated cork 2.55—4.47, Ca stearate 1.10—1.99 and Ca carbonate 0.83-0.95%. They were shown to be stable, to have fairly high brisance, but to be sufficiently sensitive to expl in the rifle bullet impact test. Byers (Refs 1 3) describes blasting expls similar in compn... 

Impact-Friction Pendulum Test. See Vol 1, p XVII and p A354, Footnote... 

Lead Block and Copper Cylinder Compression Tests (113-15) Ballistic Pendulum Test (115-16) Fragmentation Test (Geschoss-Splitter Probe (118) Impact Test by Falling Weight (118-20) Deflagration Point (Verpuf-fungstemperatur) (120) Friction Test (120-21) Rifle Bullet Test (Beschussprobe) (121)... 

Power by Trauzl Test (142-45), by Compression Test (Ensayo por recalcado) (145-46) and by Ballistic. Pendulum (146) Fragmentation Test (148-49) Impact Test (Ensayo con un pilon) (150-53) Temperature of Deflagration (153) Friction Test (Ensayo de rozamiento) (153-54) Rifle Bullet Test (Ensayo de impacto) (154)... 

Anon, "Military Explosives , PATR 9-1910/TO 11A-1-34(1955) Sensitivity to Impact (pp 43-7) Sensitivity to Friction (47-9) Sensitivity to Frictional Impact, which includes Rifle Bullet Impact Test (49) Sensitivity to Heat and Spark, which includes Explosion Temperature Test (49-52) Sensitivity to Initiation by Sand Test (52-3 Fig 10 on p 54) Stability Determinations, which include 75°C International Test, 100°C Heat Test, Vacuum Stability Test, and Potassium Iodide-Starch (KI)... 

W() Kirk Othmer, Vol 8(1952), pp 654-57 (Section on Testing Exolosives which includes Impact Tests, Explosion Temperature Tests, Sensitivity to Initiation, Pendulum Friction Test, Rifle Bullet Test, Sand Test, Rate of Detonation Determination, Ballistic Pendulum Test, Trauzl Lead Block Test,... 

KL) Anon, "Military Explosives", TM 9-1300-214/TO 11A-1-34 (1967). Chapter 5. Properties and Tests of High Explosives Sensitivity to Frictional Impact (pp 5 1 to 5-3) Sensitivity to Friction (5 3 to 5-6) Sensitivity to Frictional Impact (5-6) Sensitivity to Heat and Spark, which includes Explosion Temperature Test (5-6 to 5-9) Sensitivity to Initiation (5-9) Stability Tests, which include 75° International Test, 100° Heat Test, Vacuum Stability Test and Potassium Iodide—Starch Test (5 9 to 5-15) Brisance Tests which include Sand Test, Plate Dent Test and Fragmentation Test (5 15 to 5-18 and Fig 5 13 on p 5-19) Initiating Value (5-18 5-20) Sympathetic Detonation (5-20 to 5-21) Power which includes Heat of Explosion Test, Ballistic Pendulum Test and Trauzl Lead Block Test (5-21. to 5-24) Blast Effect (5-24 to 5-27) Cratering Effect (5-28 5 29) and Munroe-Neumann Effect (5-29 to 5 35)... 

Explosion Temperature, dec inr5 mins at 200° Friction Pendulum Test — snaps by steel shoe Heat Test at 100°, % Loss — 2.0 after 1st 48 hrs, 0.2 after 2nd 48 hrs and no expln in 100 hrs Heat Test at 120°— salmon pink after 150 mins, red fumes at 300+ and then explodes Hygroscopicity — 6.2% gain at 30°C and 90% RH Impact Sensitivity, BurMinesApparatus, 2kg wt 19cm (comparable to PETN)... 

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. 

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

Impact-Friction Pendulum Test is briefly described, p A354, Note d), under Ammonium Nitrate Ref Spencer Chemical Co, "Safety Data, Kansas City, Mo(l960)... 

Polyolefins. Ultra-High-Molecular-Weight Polyethylene.TIus is easily made by conventional low-pressure coordination polymerization. Hercules Hi-fax 1900 has a molecular weight of 2.5-5.0 million. Its outstanding properties are low coefficient of friction (0.11) abrasion-resistance superior to nylon, polyurethane, and steel unbreakable in the Izod notched impact test and high resistance to most inorganic and many organic chemicals. 

Its other props were Brisance, by Sand Test 90% of TNT Friction, by Pendulum Test - no explns Hygroscopiciry - 2.1%, when exposed to air of 90% RH at 30 Power, by Ballistic Pendulum 96% of TNT Rifle Bullet Impact Test -explns Sensitivity to Initiation - more sensitive than TNT Stability as packed, as shown by longterm storage tests - satisfactory Stability in the 75° International Test - loses 1% of wt but no deterioration Stability at 100° in 96 hrs - volatilization, but no decompn... 

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