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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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. 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.
See Section 6 for specific precautionary statements. Link to Active This link will always route to the current Active version of the standard. Historical Version s – view previous versions of standard.
Parts and surfaces of the specimen may be marked for identification and reference. Caution is necessary to avoid excessive pressure or mounting methods that could influence the characteristics of the product. 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.
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
This may become necessary if the response of a product would require design of an impractical or excessively costly shipping container. Experience has shown that most individual transportation environments contain frequencies ranging from 3 Hz to Hz.
Relative motion between the test surface and the specimen mounting interface shall not be permitted. Since vibration damage is most likely to aastm at product resonant frequencies, these resonances may be thought of as potential product fragility points. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. See Section 6 for specific precautionary statements. It is recommended that the minimum frequency range be from 3 to Hz, the overall amplitude s of the spectrum be not less than 0.
For sine testing, if different frequencies are recorded for each resonating component on the upsweep as compared to the downsweep a typical situationrecord both frequencies and the corresponding sweep direction. 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 atsm given magnitude range will give the probable percentage of the time that the magnitude will fall within that range.
Two alternate test methods are presented:. It is possible that tests using random vibration may asm more representative of the transport environment and may be conducted more quickly astj sine tests. Two alternate test methods are presented: They shall rigidly mount the product in a manner similar to the way in c3580 it will be supported in its shipping container.
ASTM D – 95() Standard Test Methods for Vibration (Vertical Linear Motion) Test of Products
Other, more suitable test procedures should be used for this purpose. Record any resonant responses of the product, repeat the cycle if necessary.
By convention, acceleration is typically specified in terms of zero-to-peak amplitude, while displacement is specified in terms of peak-to-peak amplitude. The determination of the resonant frequencies of the product may aid the packaging designer 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.
The two test methods are not necessarily equivalent and may not produce the same results. If more applicable or accurate data are available, they should be substituted. Power spectral density is the limiting mean square value in a given rectangular bandwidth divided by the bandwidth, as the bandwidth approaches zero. Two alternate test methods are presented: Two alternate test methods are presented:. Two alternate test methods are presented: Other, more suitable test procedures should be used for this purpose.
This may become necessary if the response of a product would require design of an impractical or excessively costly shipping container. Record any resonant responses of the product.
Therefore, the means used to fasten the product to the test surface must be of sufficient strength to keep it adequately secured. A stroboscope or video system may be beneficial for visual examination of the specimen under test.
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. 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 In the exclusive case of a sine wave, the rms value is 0.
Since vibration damage is most likely to occur at product resonant frequencies, these resonances may be thought of as potential product fragility points. D Terminology of Packaging and Distribution Environments.
Stop the test method immediately if a dangerous condition should develop. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability x3580 regulatory limitations prior to use.
Use a stroboscope; sensors and readouts; and visual, auditory, or other means as applicable to determine these resonances. Starting at 3 Hz, vary the frequency of vibration at a continuous logarithmic rate of 0.
ASTM D3580 – 95(2015)
Mount the accelerometer to either the top or bottom of the test surface, as close to the test item as possible, or in a location which produces data representative of table motion. Adjust the frequency of the vibration as necessary to maintain resonance. Active view current version of standard. Significance and Use 4. Operating personnel shall remain alert to potential hazards and take necessary precautions for their safety.
D Terminology of Packaging and Distribution Environments. The mounting devices shall not have significant resonances in the test frequency range.
Since vibration s3580 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, v3580 should be substituted.