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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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
Link to Active This link will always route to the current Active version of the standard. The instantaneous magnitudes of random vibration are not prescribed for any given instant in time, d5380 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.
The determination of the resonant frequencies of the product may aid the packaging designer in determining the proper packaging system to provide adequate protection s3580 the product, as well e3580 providing an understanding of the complex interactions between the components of the product as they relate to expected transportation vibration inputs. If more applicable or accurate data are available, they should be substituted.
Acceleration levels sufficient to excite resonance normally range from 0.
Two alternate test methods are presented: It asgm recommended that tests be initiated at least 6 dB below full level and incremented in one or more subsequent steps to full test level.
Two alternate test methods are presented: Active view current version of standard. Adjust the frequency of the vibration as necessary to maintain resonance. Two alternate test methods are presented:.
Sensor s may be applied as appropriate to measure data points of interest with the minimum possible alteration of the test specimen. If more applicable or accurate data are available, they should be substituted.
ASTM D3580 – 95(2015)
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. Since d580 damage is most likely to occur at product resonant frequencies, these resonances may be thought of as potential product fragility points.
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. Record any resonant responses of the product. 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. The mounting devices shall not have significant resonances in the test frequency d580.
Dwell time, acceleration level, and damage criteria are to be specified by the user. Other, more suitable test procedures should be used for this purpose. Any resonances with transmissibilities of 2 or greater may be considered significant.
D Terminology of Packaging and Distribution Environments. For spectrum examples, see Use a stroboscope; sensors and readouts; and visual, auditory, or other means as applicable to determine these resonances.
Operating personnel shall remain alert to potential hazards and take necessary precautions for their safety.
ASTM D – 95() Standard Test Methods for Vibration (Vertical Linear Motion) Test of Products
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 two test methods are not necessarily equivalent and may not produce the same results. Test duration, random spectrum, and damage criteria are to be specified by the user. Power spectral density is the limiting mean square value in a given rectangular bandwidth divided by the bandwidth, as the bandwidth approaches zero. Parts and surfaces of the specimen may be marked for identification and reference. 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 See Section 6 for specific precautionary statements.
See Section 6 for specific precautionary statements. In the exclusive case of a sine wave, the rms value is 0. Relative motion between the test surface and the specimen mounting interface shall not be permitted. D Terminology of Packaging and Distribution Environments. 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. Other, more suitable test procedures should be used for this purpose.
Mount the accelerometer to either the top or bottom of the awtm surface, as close to the test item as possible, or in a location which produces data representative of table motion.
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 astmm, as well as providing an understanding of the complex interactions between the components of the product as they relate to expected transportation vibration inputs.
Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.