ASTM D3332 PDF
This standard is issued under the fixed designation D ; the 1 These test methods are under the jurisdiction of ASTM Committee D on. ASTM D Standard Test Methods for Mechanical-Shock Fragility of Products , Using Shock Machines. Shock Machine Testing. Shock testing was performed on a shock machine that is in compliance with the following standard: ASTM D −
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Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM Headquarters. The betweenlaboratory or reproducibility standard deviation was 5. NOTE 1—The points at which the? None will be more severe than those produced by the trapezoidal shock pulse.
Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. The test surface shall be guided to fall vertically without rotation or translation in other directions. Calculation that assumes the shock pulse to be a perfect geometric?
In these cases, the test will have shown that the unmodi? Site design by Softnet.
It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Each trapezoidal shock pulse had a faired acceleration level incrementally higher than the previous shock pulse.
Common practice is to de? Quality Foam can fabricate our foams to your exact specifications, whether working from our own in-house design or customer-supplied drawings.
Shock pulses having values outside the shaded area will not damage the product. An SRS plot is a graph of the absolute value of the maximum response accelerations of each spring-mass system, plotted at their various natural frequencies. Method B is used when drop heights are known with great certainty.
Alternatively, it can be measured by photodiode-type devices that measure shock table impact and rebound velocity. This is sufficient to characterize and indicate the signi? For example, an increment of 5 g may be appropriate for most products but unacceptable for high-value products.
This may be a device that integrates the area electronically under the shock pulse waveform. The damage boundary of a trapezoidal-shock pulse envelops damage boundaries produced by other waveforms. The accelerometer is fastened to the carriage in this case, and a rigid mass weighing the same as the product is subjected to a series of shock pulses.
Two test methods are outlined, as follows: This fragility information may be used in designing shipping containers for transporting the products. Unit or consumer packages, which are transported within an outer container, are considered to be the product for the purposes of these test methods.
For example, if a half sine shock pulse waveform is used, a deeply scalloped critical acceleration line is produced and the test data become meaningless. This is required to avoid the rounded intersection of the critical velocity change and critical acceleration lines. Drop height control shall be provided to permit reproducibility within Since they are relatively easy to control, shock pulses having a half sine shock waveform are normally used.
The procedure of A4. Unit or consumer packages, which are transported within an outer container, are considered to be the product for the purposes of these test methods. The instrumentation system shall have sufficient response to permit measurements in the following ranges. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility.
The maximum acceleration at which product damage first occurs is the fragility of the product in the direction tested. As more product samples become available, the test results should be re? Link to Active This link will always route to the current Active version of the standard.
When a second sample of such a product is subjected to a single shock pulse at the same level that caused the? This point is shown as Test No.
Damage can render the product unacceptable because it becomes inoperable or fails to meet performance speci? This fragility information may be used in designing shipping containers for transporting the products.
Safety equipment may be required, and its use must be understood before starting the test. Then, when the carriage is dropped, the product is examined for product damage.
ASTM D | Rycobel
Under all three methods, the test product is fastened to the carriage of a shock test machine. A factor of 2 or more is normally used for an added safety margin. Complete details and descriptions of SRS may be found in the literature Historical Version s – view previous versions of standard. Two test methods are outlined, as follows: Accept3 able increment size is in? ASTM D outlines three test methods A-C for determining the fragility of products to be packaged for shipment in the distribution environment.
A superscript epsilon e indicates an editorial change since the last revision or reapproval. Multidirectional tests are recommended since most products have different fragilities in different orientations.
ASTM D Foam Test Methods
Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. Method A is used when information on drop heights d3323 limited.
It will fail only when it is subjected to even higher level shocks. A number in parentheses indicates the year of last reapproval.