This standard is issued under the fixed designation D ; the number 1 These test methods are under the jurisdiction of ASTM Committee D on. Find the most up-to-date version of ASTM D at Engineering ASTM D Standard Test Methods for Vibration (Vertical Linear Motion) Test of Products 产 1. Scope These test methods cover.
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The determination of the resonant frequencies of the product may aid the packaging d33580 in determining the proper packaging system to provide adequate protection for the product, as well as providing an understanding of the complex interactions between the components of the product as they relate to expected transportation vibration inputs.
Whenever sufficient products are available, five or more replicate samples should be tested to improve the statistical reliability of the data obtained see practice E Starting at 3 Hz, vary the frequency of vibration at a continuous logarithmic rate of 0. Sensor s may be applied as appropriate to measure data points of interest with the minimum possible alteration of the test specimen.
Therefore, the means used to fasten the product to the test surface must be of sufficient strength to keep it adequately secured. Stop the test method immediately if a dangerous condition should develop.
Record any resonant responses of the product, repeat the cycle if necessary. Use a stroboscope; sensors and readouts; and visual, auditory, or other means as applicable to determine these resonances. Any resonances with transmissibilities of 2 or greater may be considered significant. Caution is necessary to avoid excessive pressure or mounting methods that could influence the characteristics of the product. The instantaneous magnitudes of random vibration are not prescribed for any given instant in time, but instead are prescribed by a probability distribution function, the integral of which over a given magnitude range will give the probable percentage of the time that the magnitude will fall within that range.
It is possible that tests using random vibration may be more representative of the transport environment and may be conducted more quickly than sine tests. Relative motion between the test surface and the specimen mounting interface shall not be permitted.
ASTM D3580 – 95(2015)
Since vibration damage is most likely to occur at product resonant frequencies, these resonances may be thought of as potential asmt fragility points.
No other units of measurement are included in this standard. The mounting devices shall not have significant resonances in the test frequency range. Acceleration levels sufficient to excite resonance normally range from 0.
ASTM D 产品振动实验的试验方法(垂直正弦曲线运动)_百度文库
The two test methods are not necessarily equivalent and may not produce the same results. Parts and surfaces of the specimen may be marked for identification and reference.
The test surface shall be driven to move only in vertical linear motion throughout the desired range of amplitudes and frequencies.
Active view current version of standard. Since vibration damage is most likely to occur at product resonant frequencies, these resonances may be thought of as potential product fragility points.
Referenced Documents purchase separately The qstm listed below are referenced within the subject standard but are not provided as part of the standard.
Since vibration damage is most likely to occur at product resonant frequencies, these resonances may be thought of as potential product fragility points. If more applicable or accurate data are available, they should be substituted. Link to Active This link will always route to the current Active version of the standard. See Section 6 for specific precautionary statements.
ASTM D – 95() Standard Test Methods for Vibration (Vertical Linear Motion) Test of Products
Operating personnel shall remain alert to potential hazards and take necessary precautions for their safety. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
Dwell time, acceleration level, and damage criteria are to be specified by the user. If more applicable or accurate data are available, they should be substituted.
By convention, acceleration is typically specified in terms of zero-to-peak amplitude, while displacement is specified in terms of peak-to-peak amplitude.
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. Other, more suitable test procedures should be used for this purpose.
Two alternate test methods are presented: Astk stroboscope or video system may be beneficial for visual examination of the specimen under test. Significance and Use 4. Two alternate test methods are presented: They shall rigidly mount the product in a manner similar to the way in which it will be supported in its shipping container.
When necessary to observe interior components of the product during tests, holes may be cut in noncritical area or noncritical panels may be removed.
Record any resonant responses of the product. For sine testing, the frequency sweep may be interrupted or reversed if necessary for short time periods in order to properly identify a resonating component. R3580 sine testing, if different frequencies are recorded for d350 resonating component on the upsweep as compared to the downsweep a typical situationrecord both frequencies and the corresponding sweep direction. D Terminology of Packaging and Distribution Environments.
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.
Link to Active This link will always route to the current Active version of the standard. In the exclusive case of a sine wave, the rms value is 0. It is recommended that tests be initiated at least 6 dB below full level and incremented in one or more subsequent steps to full test level. This time is dependent upon the characteristics of the vibration test machine and control system, the setup, and the weight and characteristics of the test specimen.
For spectrum examples, see Two alternate test methods are presented: