ASTM D4728 PDF

ASTM D Standard Test Method for Random Vibration Testing of Shipping Containers has been released. It revises and replaces the. This standard is issued under the fixed designation D ; the number immediately 1 This test method is under the jurisdiction of ASTM Committee D10 on. ASTM D Standard Test Method for Random Vibration Testing of Shipping Containers.

Author: Kazirg Arashibar
Country: Equatorial Guinea
Language: English (Spanish)
Genre: Marketing
Published (Last): 24 October 2017
Pages: 279
PDF File Size: 19.51 Mb
ePub File Size: 3.92 Mb
ISBN: 476-2-82466-435-4
Downloads: 74032
Price: Free* [*Free Regsitration Required]
Uploader: Vogis

Any attempt to do so should be done with caution.

D Terminology of Packaging and Distribution Environments. However, different test levels may be utilized for each axis depending on wstm In this way, many product and container resonances are simultaneously excited. Refer to Practice D for recommended random vibration tests.

This test allows analysis of the interaction between these components. Creating a Random Vibr Vibration exposure affects the shipping container, its interior packing, means of closure, and contents. Therefore, unrealistic fatigue damage due to s4728 buildup is minimized.

ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard.

A superscript epsilon e indicates an editorial change since the last revision or reapproval. Design modification to one or all of these components may be used to achieve optimum performance in the shipping environment.

For more information visit www. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

Dummy test loads are acceptable if testing the actual product might be hazardous or cost prohibitive.

  FROM PLAYBOY TO PAPA BY LEANNE BANKS PDF

ASTM-D4728

Approximating the actual damage, or lack of damage, experienced in real life may require subjecting the container and its contents to random vibration tests. Equivalent tests between sine and random, in a general sense, are difficult to establish due to nonlinearities, damping and product response characteristics. Random vibration contains no periodic or quasi-periodic constituent. NOTE 2—Random vibration systems typically create a drive signal that follows the Gaussian distribution.

When possible, confidence levels may be improved by comparing laboratory test results with actual field shipment effects. Link to Active This link will always route to the current Active version of the standard. The test duration is the asgm at full test level.

ASTM D – 06 Standard Test Method for Random Vibration Testing of Shipping Containers

For drive clipping at the 3 sigma level, the maximum amplitude will not exceed 3 times the rms value. This actual data, from Ref 7represents a leaf spring trailer with a 40 lb 18 kg load traveling at 55 mph on a concrete interstate expressway.

Approximating the actual damage, or lack of damage, experienced in real life may require subjecting the container and its contents to random vibration tests.

Exact situations must be veri? Users of this standard are expressly advised that determination of the validity of any such patent rights, and the d47228 of infringement of such rights, are entirely their own responsibility.

For the purposes of this test method, the bandwidth may be considered equivalent to the frequency resolution of a spectrum analysis. The number of DOF is determined by the analysis bandwidth frequency resolution and total time of the sample determined by frequency resolution and number of averages. Adjust the restraining devices to permit free movement of the specimen of approximately 10 mm 0.

  ASTERIX AND SOOTHSAYER PDF

ASTM-D – Medical Package Testing

For example, if the laboratory test does not produce a asm level of damage, then adjustments should be made. Such tests may be used to assess the performance of a container with its interior packing and means of closure in terms of its ruggedness and the protection that it provides the contents when subjected to random vibration inputs.

Very steep slopes require smaller bandwidths to maintain control to 63 dB. Sources of axtm information are listed in the Reference section 1- Sensors and transducers should be applied with minimum possible alteration of the test specimen to obtain data on the container or packaged item. Therefore, control analysis based on monitoring table motion rather than actual package response is recommended.

This enables the closed loop control system to complete its equalization at lower test levels and provides the operator adequate opportunity to visually verify that the test specimen and? Random vibration may be conducted in any axis vertical or horizontal or in any package orientation. Such tests may be used to assess the performance of a container with its interior packing and means of closure in terms of its ruggedness and the protection that it provides the contents when subjected to random vibration inputs.

Individual reprints single or multiple copies ast, this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm.