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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Since vibration damage is most likely to occur at product resonant frequencies, these resonances may be thought of as potential product fragility points. The instantaneous magnitudes of random vibration are not prescribed for any given instant in time, but s3580 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.
Test duration, random spectrum, and damage criteria are to be specified by the user. Experience has shown that most individual transportation environments contain frequencies ranging from asttm Hz to Hz. 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. The mounting devices shall not have significant resonances in the test frequency range.
Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
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
When necessary to observe interior components of the product during tests, holes may be cut in noncritical area or noncritical panels may be removed. Two alternate test methods are presented: Whenever sufficient products are available, five or more replicate samples should be tested to ast the statistical reliability of the data obtained see practice E They shall rigidly mount the product in a manner similar to the way in which it will be supported in its shipping container.
Two alternate test methods are presented:. Operating personnel shall remain alert to potential hazards and take necessary precautions for their safety. This may become necessary if the response of a product would require design of an impractical or excessively costly shipping container. Mount the accelerometer to either the top or bottom d35880 the test surface, as close to the test item as possible, or in a location which produces data representative of table motion.
In aetm exclusive case of a sine wave, the rms value is 0. A stroboscope or video system may be beneficial for visual examination of the specimen under test. 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.
Two alternate test methods are presented: This may become necessary if the response of a product would require design of an impractical or excessively costly shipping container. Active view current version of standard. Parts and surfaces of the d3508 may be marked for identification and reference. Two alternate test methods are presented:.
By convention, acceleration is typically specified in terms of zero-to-peak amplitude, while displacement is specified in terms of peak-to-peak amplitude. Significance and Use 4. If more applicable or accurate data are available, they should be substituted. If more applicable or accurate data are available, they should axtm substituted.
Starting at 3 Hz, vary the frequency of vibration at a continuous logarithmic rate of 0. It is the responsibility of the user of this standard to establish d580 safety and health practices and astmm the applicability of regulatory limitations adtm to use. 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. Since vibration damage is most likely to occur at product resonant frequencies, these resonances may be thought of as potential product fragility points.
Dwell time, acceleration level, and damage criteria are to be specified by the user. 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.
Other, more suitable test procedures should be used for this purpose. Caution is necessary to avoid excessive pressure or mounting methods that could influence the characteristics of the product.
ASTM D3580 – 95(2015)
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 xstm product as they relate to expected transportation vibration inputs.
Therefore, the means used to fasten the product to the test surface must be of sufficient strength to keep it adequately secured. The test surface shall be driven to move only in vertical linear motion throughout the desired range of amplitudes and frequencies.
Sensor s may be applied as appropriate to measure data points of interest with the minimum possible alteration of the test specimen. Record any resonant responses of the product. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D Terminology of Packaging and Distribution Environments. 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.
Historical Version s – view previous versions of standard. Other, more suitable test procedures should be used for this purpose. Link to Active This link will always route to the current Active version of the standard.
Power spectral density is the limiting mean square value in a given rectangular bandwidth divided by the bandwidth, as the bandwidth approaches zero. Other, more suitable test procedures should be used for this purpose. Link to Active This link will always route to the current Active version of the standard. Record any resonant responses of the product, repeat the cycle if necessary.
Two alternate test methods are presented: Adjust the frequency of the vibration as necessary to maintain resonance. See Section 6 for specific precautionary statements. For spectrum examples, see Any resonances with transmissibilities of 2 or greater may be considered significant. No other units of measurement are included in this standard.
Stop the test method immediately if a dangerous condition should develop.