W1900
Drop&vibraion test condition according to DELL Part No. 00121 Rev. A04-00
7.0 VIBRATION TESTING
7.1 Equipment
The apparatus shall consist of a vibration machine with a table having a horizontal surface of sufficient strength and rigidity that the applied vibrations are essentially uniform over the entire test surface. The table shall be supported by a mechanism capable of producing a random vibration in the vertical direction. Suitable fixtures shall be provided to prevent the test specimen from losing contact with the table.
7.2 Vibration Test Procedure
Random vibration shall be used at a level of 1.146 grms (truck/air spectrum). The spectrum break points are defined in Table 1 of this specification.
TABLE 1
RANDOM VIBRATION SPECTRUM BREAK POINTS
Frequency G2/Hz
1 Hz .0001
4 Hz .01
100 Hz .01
200 Hz .001
7.2.1 Vibration Test Procedure for Single Container and Palletized Containers Under 250 Pounds
The random vibration levels and break points defined in Table 1 will be used to test the single container. All six of the containers sides will be tested for 30 minutes/side. After testing is completed it is recommended to conduct a visual and functional test on the product for damage.
7.2.2 Vibration Test Procedure for Palletized Containers Weighing more than 250 Pounds
The packaged products shall be secured to the pallet in the same manner as it would for shipment (i.e. stretch wrap or banding). This unitized load shall be placed upon the vibration table with only the pallet being secured to the table. The random vibration levels and break points noted in Table 1 will be use to test the palletized multi-container load on the bottom axis for one hour. After testing it is recommended to conduct a visual and functional test the on product for damage.
7.2.3 Vibration Test Procedure for RMSD/HDD Single Container and Palletized Containers Under 250 Pounds
The random vibration levels and break points defined in Table 2 are intended only for inbound RMSD/HDD suppliers who have been certified by Dell Computer Shock and Vibration Engineering to conduct packaged product testing. The random vibration levels and breakpoints will be used to test the single container. All six of the containers sides will be tested for 30 minutes/side. After testing is completed it is recommended to conduct a visual and functional test on the product for damage. Random vibration shall be used at a level of 1.138 grms (truck/air simulation).
TABLE 2
RMSD/HDD RANDOM VIBRATION SPECTRUM BREAK POINTS
Frequency G2/Hz
5 Hz .01
100 Hz .01
200 Hz .001
8.0 DROP TESTING
8.1 Equipment
The package product shall be tested using free fall drop test equipment such as a drop leaf table or hoist. This equipment should have accurate control of drop height, induce no rotational or side ways motion, and have an impact surface with significant mass and rigidity.
8.2 Drop Test Procedure
The package product should be tested to the criteria set by the package product type and the package product normal mass. The mass of the package product is the total weight of the product, packaging, and accessories that would normally be shipped together.
8.2.1 Product and Container Surface Orientation and Identification
Both product and container orientation should be noted for all drops on the test documentation. Product surface identification is based on the product positioned in normal operating position, when looking at the front of the product. See Figure 1.
FIGURE 1
PRODUCT AND CONTAINER ORIENTATION AND IDENTIFICATION
8.2.2 SRS Profile for Lab Certified Inbound RMSD Suppliers
The SRS spectrum breakpoints, defined in Table 3, are intended only for inbound RMSD suppliers who have been certified by Dell Computer Shock and Vibration Engineering to conduct packaged product testing. Testing is to be conducted using TP3 software and peripheral surrogate technology. The damping ratio and SRS type must be set at 0.05 and composite, respectively.
TABLE 3
DESKTOP AND PORTABLE SRS BREAKPOINTS
Frequency (Hz) Desktop SRS G-Level Not to be Exceed Portables SRS G-level Not to be Exceeded
25 175 175
100 225 225
200 300 650
3000 300 650
Recommended TP3 Window for test: 50ms
8.2.3 Filter Frequency Requirements
Filter frequency should be set at 5000 Hz, unless otherwise specified by Dell Packaging Engineering.
8.2.4 Drop Test Sequence for Single Containers
The non-palletized container should be dropped in the following sequence at drop heights in the category define by the package product mass in Table 4. The assurance level should be agreed upon prior to test. Assurance level 1 is typically for Servers/Storage and Field Service products. Assurance level 2 is typically for Desktop/Workstations or Inbound products. Product and packaging should be visually inspected and the product functionally tested for damage after drop testing.
1) A flat drop on the bottom.
2) A flat drop on the top.
3) A flat drop on the right.
4) A flat drop on the left.
5) A flat drop on the front.
6) A flat drop on the back.
7) A corner drop on the most critical component or product direction. If a critical direction cannot be determined use the bottom corner at the manufacturing joint.
8) One of three radiating edges from the critical corner.
9) A second radiating edge from the critical corner.
10) The third radiating edge from the critical corner.
8.2.5 Drop Test Sequence for Palletized Containers Weighing 45< W< 250 Pounds
The palletized single container shall be dropped in the following sequence at drop heights in the category define by the package product mass in Table 4. Product and packaging should be visually inspected and the product functionally tested for damage after drop testing.
1) A flat drop on the bottom.
2) A flat drop on the top.
3) A flat drop on the right.
4) A flat drop on the left.
5) A flat drop on the front.
6) A flat drop on the back.
8.2.6 Drop Test Sequence for Palletized Containers Weighing 250 lbs or Greater
All drops shall be on the bottom of the pallet. The first drop shall be from the maximum height followed by the next ten drops from the minimum height in Table 4. After drop testing the product and packaging should be visually inspected and the product functionally tested for damage.
TABLE 4
Single Container Drop Height and # Drops(Non-Palletized) Palletize Load Drop Height and # Drops
NUMBER OF DROPS ASSURANCE LEVEL 1 ASSURANCE LEVEL 2 NUMBER OF DROPS Drop Height
PackageProductWeightPounds [Kg]
0 [0.0] < W < 10 [4.5] 10 48”[122cm] 42”[106cm] - -
10 [4.5] < W < 24 [11.0] 10 42”[106cm] 36”[91cm] - -
24 [11.0] < W < 45 [20.5] 10 36”[91cm] 30”[76cm] - -
45 [20.5] < W < 80 [34.0] 10 30”[76cm] 30”[76cm] 6 flats 30”[76cm]
80 [34.0] < W < 100 [45.5] 10 30”[76cm] 24”[61cm] 6 flats 24”[61cm]
100 [45.5] < W < 175 [79.4] 10 24”[61cm] 18”[46cm] 6 flats 24”[61cm]
175 [79.4] < W < 250 [113.4] - - - 6 flats 18”[46cm]
250 [113.4] < W < 500 [226.8] - - - 11BottomOnly 1-12”[1-30.5cm]10-2”[10-5.1cm]
500 [226.8] < W - - - 11BottomOnly 1-6”[1-15.2cm]10-2”[10-5.1cm]
DROP HEIGHTS |
发表于 2006-8-8 19:06:52
发表于 2006-8-13 13:58:29
