lesson15-文庫(kù)吧
2025-07-02 15:22 本頁(yè)面
【正文】 wing machines, machine tools 1525 g39。s 2540 g39。s 4060 g39。s 85115 g39。s 6085 g39。s 115 g39。s and up Step 1 Determine Product Fragility ? The highest deceleration, which did not cause damage, is then known to be the product’s gfactor. ? It may be necessary to determine fragility levels for a product in various orientations. ? If the gfactor is estimated too high, and the product is unable to survive as much shock as anticipated, the packaging will be underdesigned and significant shipping damage is likely to occur. ? If the gfactor is estimated too low, and the product can actually withstand more shock than anticipated, the packaging will be overdesigned and unnecessarily expensive. Step 2 Determine Conditions ? Drop heights are generally established by the product39。s weight, which usually reflect how the product will be handled(Table ). Step 2 Determine Conditions Table Typical drop heights Weight Range Type of Handling Drop Height Gross Weight in lbs. in inches 010 1 person throwing 42 1020 1 person carrying 36 2050 1 person carrying 30 50100 2 person carrying 24 100250 Light equipment 18 250+ Heavy equipment handling 12+ Note: Palletized products may receive drops of up to six inches. Step 3 Calculate Cushion Requirements ? To determine the amount of functional cushioning material which will provide adequate protection for the packaged item. ? By functional cushioning material, we mean that portion of the design which directly supports the load and functions to absorb shock during impacts. Step 3 Calculate Cushion Requirements Determining Cushion Thickness 24 drop height, 25 drop average Step 3 Calculate Cushion Requirements Determining Static Loading Range 24 drop height, 25 drop average Step 3 Calculate Cushion Requirements Figure Typical dynamic cushioning curve Step 3 Calculate Cushion Requirements Using Dynamic Cushioning Curves (Figure ) An Overview ? Curves are generated by dropping a series of known weights onto a cushion sample from a specified height and measuring the amount of shock experienced by the weights as they impact the foam. ? In simple terms, this testing represents a product dropping on a cushion from a height likely to be encountered during shipment. ? The horizontal axis represents a range of static loading
環(huán)評(píng)公示相關(guān)推薦
鄂ICP備17016276號(hào)-1