First Article Tests for the 40"x48" Recycled Plastic Pallet with Cartridge, 20MM with 24 M548 Metal Boxes, Manufactured by Rotational Molding from Brigham City, Utah, in Accordance with MIL-STD-1660, "Design Criteria for Ammunition Unit Loads"
ARMY DEFENSE AMMUNITION CENTER MCALESTER OK VALIDATION ENGINEERING DIV
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The U.S. Army Defense Ammunition Center DAC, Validation Engineering Division SJMAC-DEV conducted First Article Tests for the 40 x 48 Recycled Plastic Pallets with Cartridges, 20MM with 24 M548 metal boxes, manufactured by Rotational Molding from Brigham City, Utah, in accordance with MIL-STD-1660, Design Criteria for Ammunition Unit Loads. Three test units were tested with a load of 4,030 lbs each. The tests that were to be accomplished on the test units were the stacking, repetitive shock, drop, incline impact, forklift handling, and disassembly tests. Test Units 1 and 2 were tested in accordance with MIL-STD-1660 at ambient temperature, both test units failed during the first orientation of the repetitive shock test. The recycled plastic material could not withstand the heat generated by the friction created during the repetitive shock tests. The pallet posts were weakened from the heat and collapsed under the weight of the test load. Also, plastic deformation of the skids occurred as a result of the repetitive impacting of the skids to the vibration table. Test Unit 3 was drop tested, incline impacted, forklift hazard course tested, and disassembled for engineering evaluation purposes only. Test Unit 3 minimally passed the evaluation testing which excluded the stacking and repetitive shock tests. The pallet posts showed signs of failure from the weight of the test load. It should also be noted that the current pallet design is not a winged pallet. The current design of the 40 x 48 Recycled Plastic Pallet manufactured by Rotational Molding from Brigham City, Utah, does not meet the requirements of MIL-STD-1660, and is not recommended for the unitization of ammunition loads.
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