Issue link: http://cp.revolio.com/i/617505
25 ista views • December 2015 • www.ista.org Product 2: Automotive Electrical Assembly Packaged in Thermoformed Trays After each of the six vibration tests, the level of damage to each tray was judged based on the number of scuffs and abrasions. The levels of damage ranged from scuffs and abrasions between interlocking points of the trays, wear on the trays created by the movement of the parts within the trays, and wear between the trays and the corrugate that surrounded the unit loads. The current vibration profile produced damage in over twenty locations on the trays in stack one. The highest level of damage occurred on the trays 1.1.3 -1.1.6, Figure 3.7-3.9, at the interlocking points of the trays. Very similar results were seen for the proposed profile. In addition, the current profile experienced damage from contact with the corrugate, Figure 3.10 this damage was not seen in any of the other test. The other five test also produced around twenty points of minor damage the points where the trays interlocked, with most of the damage occurring on trays three through six. The scuffs and abrasions seen from these five tests were not as harsh as those seen during the current vibration profile. 4. Observations: By evaluating multiple product types, it is evident that the run duration and intensity of the vibration profile affect the levels of damage produced in certain products. It is also evident that for other types of products, the level of intensity and run duration of the vibration profile do not result in significantly different damage levels. The Yard Tractor and Automotive Electrical Assembly represent examples of each of these cases. Testing of both products revealed that the current ASTM truck vibration profile produced damage levels in excess of that typically realized in the field. The damage resulting from the other proposed and modified vibration profiles varied in level depending on the product prohibiting general conclusions. Figure 3.7: Example of Damage 1.1.3 Figure 3.8: Example of Damage 1.1.4 Figure 3.9: Example of Damage 1.1.5 Figure 3.10: Corrugate Dust From Current Profile > MORE ON PAGE 26