GMW3172_Packaging Tests_RandomVibration通用包装随机震动测试.pdf

GM WORLDWIDE ENGINEERING STANDARDS Template For ENG STDS GMW3172 GM Confidential Copyright 2015 General Motors Company All Rights Reserved June 2015Page 100 of 116 10.2 Electrical. There are no new Electrical procedures for PV. All Electrical procedures are defined in the Development and Design Validation sections. See Table 5 Summary of A/D/V Activities for applicable procedures for PV. 10.3 Mechanical. Shipping Vibration is the only new Mechanical procedure for PV. All other Mechanical procedures are defined in the Development and Design Validation sections. See Table 5 Summary of A/D/V Activities for applicable procedures for PV. 10.3.1 Shipping Vibration. Purpose: This test shall verify the robustness of the component together with the packaging during shipping. Applicability: All components (with and without surfaces visible to customers) where the component supplier is responsible for container design. Note: When GM is responsible for container design, the component supplier is responsible to provide components and any applicable supplier designed inserts to be tested. Operating Type: 1.1 Monitoring: Not applicable Procedure: Use a vibration test fixture that allows the shipping container to move freely in the vertical axis of the vibration table. One possible fixture consists of a base plate with four upright posts that are slightly larger than the shipping container. Provisions shall be made to allow placement of the shipping container in all three directions. 1Vibrate the shipping container for 24 h in each of the three mutually perpendicular directions using the methods outlined in ASTM D4728, Standard Test Method for Random Vibration Testing of Shipping Containers. If a supplier can use a vibration table with 6 Degrees Of Freedom, then the test can be run for 24 h only once. This test shall be performed on one fully-populated container of production-intent components in their final shipping container. The shipping container shall include all interior packing material. Use the Random Vibration Profile shown in Table 47 and Figure 41. 2Inspect all components for structural damage, degradation of surfaces visible to customers, and for debris from the packaging materials both inside and outside of the component. 3Select components (6 samples as a default) from the highest stress area of the shipping container to perform the 5-Point Functional/Parametric Check. Figure 41: Random Vibration Profile for Shipping Effective Acceleration = 9.81 m/s2 = 1.0 GRMS GM WORLDWIDE ENGINEERING STANDARDS Template For ENG STDS GMW3172 GM Confidential Copyright 2015 General Motors Company All Rights Reserved June 2015Page 101 of 116 Table 47: Random Vibration Profile for Shipping FrequencyPower Spectral Density 10 Hz0.096170 (m/s2)2/Hz = 0.00100 g2/Hz 12 Hz0.963627 (m/s2)2/Hz = 0.01002 g2/Hz 100 Hz0.963627(m/s2)2/Hz = 0.01002 g2/Hz 200 Hz0.000962 (m/s2)2/Hz = 0.00001 g2/Hz 300 Hz0.000962 (m/s2)2/Hz = 0.00001 g2/Hz Note: This test is not a life fatigue test for vibration, but rather an evaluation of the ability of the shipping container to provide adequate transport of the component(s) without damaging them. The Vibration with Thermal Cycle test is the life test for the component to demonstrate reliability and confidence for vibration fatigue. This test does not prove vibration fatigue reliability. Criteria: Functional Status Classification shall be C. Additionally, during the Visual Inspection and Dissection DRBTR, there shall be no external visible damage to any of the components. And there shall be no internal damage to the 6 selected components that were functionally tested. Additionally report any debris from the packaging materials either inside or outside the components. 10.4 Climatic. There are no new Climatic procedures for PV. All Climatic procedures are defined in the Development and Design Validation sections. See Table 5 Summary of A/D/V Activities for applicable procedures for PV. 10.5 Enclosure. There are no new Enclosure procedures for PV. All Enclosure procedures are defined in the Development and Design Validation sections. See Table 5 Summary of A/D/V Activities for applicable procedures for PV. 10.6 Material. None. 11 Provisions for Shipping Not applicable. 12 Notes 12.1 Glossary. Component: A level of hardware made up of various parts that are combined to perform an electrical/electronic function and it is the focus of the GMW3172 Component Environmental Test Plan (CG3043). Part: An element that is used to construct a component such as a transistor, circuit board, housing, motor, and potting material, etc. Note: Some items, such as a motor, may be considered to be a “component” or a “part” depending on its application and test requirements. 12.2 Acronyms, Abbreviations, and Symbols. AAmpere A/D/VAnalysis/Development/Validation ASTMAmerican Society for Testing & Material CEMENTComponent EMC and ENvironmental Test Database cmCentimeter CTECoefficient of Thermal Expansion CTSComponent Technical Specification CVEComponent Validation Engineer DRBTR Design Review Based on Test Results