GB/T 2423.10-2008 (GB/T 2423.10-2019 Newer Version) PDF English
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Environmental testing - Part 2: Test methods - Test Fc: Vibration (sinusoidal)
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Environmental testing - Part 2: Test methods - Test Fc: Vibration (sinusoidal)
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Environmental testing for electric and electronic products - Part 2: Test methods - Test Fc and guidance: Vibration (Sinusoidal)
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Electric and electronic products--Basic environmental test regulations for electricians--Test Fc: The vibration (sine) method
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GB/T 2423.10-2008: PDF in English (GBT 2423.10-2008) GB/T 2423.10-2008
Environmental testing for electric and electronic products. Part 2. Tests methods.Test Fc. Vibration (sinusoidal)
ICS 19.040
K04
National Standards of People's Republic of China
GB/T 2423.10-2008/IEC 60068-2-6.1995
Replacing GB/T 2423.10-1995
Environmental testing of electrical and electronic products
Part 2. Test methods
Test Fc. vibration (sine)
(IEC 60068-2-6.1995, IDT)
2008-03-24 released
2008-10-01 Implementation
General Administration of Quality Supervision, Inspection and Quarantine of the People 's Republic of China
China National Standardization Management Committee released
Directory
Preface I
Introduction II
1 range 1
2 normative reference document 1
3 Terms and definitions 1
4 test equipment 4
5 harsh level 5
Pretreatment 8
7 Initial check 8
8 Test 8
9 intermediate test 9
10 recovery 9
11 Final detection 9
The provisions to be given in relation to the specification
Appendix A (informative) Test Fc Guide 12
Appendix B (informative) Examples of harsh grades that are primarily used for component applications
Appendix C (informative) Examples of harsh grades that are primarily used for device applications
GB/T 2423.10-2008/IEC 60068-2-6..1995
Preface
GB/T 2423 "Environmental testing of electrical and electronic products Part 2. Test methods" are divided into several parts according to the test method.
This part is part 10 of GB/T 2423.
This part is equivalent to IEC 60068-2-6...1995 "Environmental Test Part 2. Test Method Test Fc. Vibration (Sine)".
IEC 60068-2-6.1995, which is used in this part, is defined by IEC Guide 104 as the basis for safety basics.
For ease of use, this section makes the following editorial changes.
A) "the part of this part of IEC 60068" is replaced by the words "part of GB/T 2423" or "this part";
B) Replace the comma as a decimal point with the decimal point "."
C) prerequisites for the removal of international standards;
D) Change this part to the current name in order to be consistent with the names of the other parts of the existing GB/T 2423.
Some of the normative documents cited in this section have not yet been translated into equivalent national standards, and in reference to these normative texts
Are still listed as IEC /ISO number.
This part replaces GB/T 2423.10-1995 "Electrical and Electronic Product Environmental Test Part 2. Test Fc. Vibration (sinusoidal)", and
Compared to this part, the digital content control and digital filtering aspects of the technical content. The original content is also modified and added.
IEC 60068-2-34, IEC 60068-2-35, IEC 60068-2-36 and IEC 60068-2-37 are currently discontinued and, in this section
It is no longer referenced when revising.
Appendix A, Appendix B and Appendix C of this section are informative.
This part of the Shanghai Institute of Quality Supervision, Inspection and Technology proposed.
This part of the China Electrotechnical Electronic Products Environmental Conditions and Environmental Testing Standardization Technical Committee.
This part of the drafting unit. the Ministry of Information Industry Electronics Fifth Research Institute, Shanghai Institute of Quality Supervision, Inspection and Technology, Guangzhou University, Beijing Airlines
Air and Space University, Shanghai Aerospace 808, the Ministry of Information Industry Electronics Fourth Research Institute.
This part of the main drafters. Lu Zhaoming, Ji Chunyang, Xu Zhonggen, Wu Sa, Hu Jingping, Wang Qunjian, Zhao Minglei, Lin Jiayi, Wang Deyan.
This part of the previous version of the standard to replace the release of the situation.
--- GB/T 2423.10-1981 first release;
--- GB/T 2423.10-1995 First revision.
GB/T 2423.10-2008/IEC 60068-2-6..1995
introduction
The vibration (sinusoidal) test method given in this part of GB/T 2423 is applicable to ships that may be carried during transport or use
Equipment, land vehicles, rotorcraft space applications, as well as due to mechanical or seismic phenomena lead to rotation, pulsating or swing force to produce resonance of the yuan
Parts, equipment and other products (referred to as samples).
This test allows the sample to withstand a given sinusoidal vibration, or to withstand a certain period of time in a discrete frequency of sinusoidal
vibration. Check with the specified vibration response to determine the dangerous frequency of the sample.
The specification should indicate whether the sample is working on vibration or whether it should continue to work after vibration.
It must be emphasized that the vibration test always requires a certain degree of engineering judgment, both supply and demand should fully understand this point. Anyway, sine
The vibration test is a definite, relatively simple process and is therefore suitable for diagnostic and service life testing.
The text of this part first discusses the use of analog technology or digital technology in the specified point of the test method, given the test in detail
Program, and the requirements for vibration requirements, severity levels (frequency range, amplitude and duration) are specified. The preparation of relevant norms
The test procedure and the severity level applicable to the sample and its requirements should be selected.
The terms and definitions given in Chapter 3 apply to this section.
Appendix A gives the guidelines for this test, and Appendix B and Appendix C provide a selection of the severity of components and equipment.
GB/T 2423.10-2008/IEC 60068-2-6.1995
Environmental testing of electrical and electronic products
Part 2. Test methods
Test F c. vibration (sine)
1 range
This section presents a standard test procedure procedure for determining the requirements of the components, equipment and other products (hereinafter referred to as samples)
The ability to cool the sinusoidal vibration.
The purpose of this test is to determine the mechanical weakness of the sample and/or the characteristics of the situation. Use this information, in conjunction with the relevant specifications
Determine whether the sample can be received. In some cases, this test method can be used to demonstrate the mechanical integrity of the sample and/or to study it
Their dynamic characteristics. It is also possible to divide the component level according to the ability to withstand different levels of rigidity in this test.
2 normative reference documents
The terms of this document are the terms of this part by reference to this part of GB/T 2423. Any reference to the date of the text
, All subsequent amendments (excluding corrigenda) or revisions do not apply to this section. However, encouragement is achieved under this section
The parties to the agreement study whether the latest versions of these files are available. For undated references, the latest edition of this document applies
section.
GB/T 2421-1999 Environmental testing for electric and electronic products - Part 1. General (idt IEC 60068-1. 1988)
Environmental testing of electric and electronic products - Part 2. Test methods - Components, equipment and other products - GB/T 2423.43-1995
Impact requirements (Ea), collision (Eb), vibration (Fc and Fd) and steady-state acceleration (Ca), etc.
60068-2-47. 1982)
GB/T 2423.56-2006 Environmental testing for electric and electronic products - Part 2. Test methods - Test Fh. Broadband random vibration
(CNC) and guidelines (IEC 60068-2-64..1993, IDT)
GB/T 4796-2008 Classification of environmental conditions for electric and electronic products - Part 1. Environmental parameters and severity (IEC 60721-
1..2002, IDT)
IEC 60050 (721)..1991 International Electrotechnical Vocabulary (IEV) 721 Telegraph and Fax Communication Data Communication
ISO 2041..1990 Vibration and shock vocabulary
3 terms and definitions
Define the index
Actual movement actualmotion 3.7
Basic sport basicmotion 3.6
Center Resonance Frequency centredreesonancfrequencies 3.10
Checkpoint checkpoint 3.2.1
Dangerous frequency criticalfrequencies 3.9
Damping
Virtual reference point fictitiousreferencepoint 3.2.2.1
Fixed point fixingpoint 3.1
Measuring point
GB/T 2423.10-2008/IEC 60068-2-6..1995
Multipoint control multipointcontrol 3.3.2
Reference point 3.2.2
Limited scanning frequency restrictedfrequencies 3.11
Signal tolerance signaltolerance 3.5
Single point control
Sweep cycle sweepcycle 3.4
The generic nouns are usually in accordance with ISO 2041 and GB/T 2421, but the sweep cycle (3.4) and the signal tolerance (3.5) are defined by this section
of.
The description of the following special terms is different from or is not defined in ISO 2041 or GB/T 2421.
3.1
The part of the sample that is in contact with the fixture or vibrating table is usually a place where the sample is fixed. If it is the actual installation of a structure
Part of the fixture for use, should take the installation structure and vibration table contact with the part of the fixed point, and should not take the sample and vibration table contact with the Department
Divided into fixed points.
3.2
Some of the specific points of the data collected in the experiment have two forms, given the definition below.
Note. In order to evaluate the performance of the sample, measurements can be made at many points of the sample. But in this section, this situation is not treated as a measure of this side
See Appendix A for a more detailed account. 2.1.
3.2.1
A point on a fixture, shaker, or sample. And as close as possible to a fixed point, and in any case must be solid
Fixed point rigid connection.
Note 1. The requirements of the test are ensured by data from several test points.
Note 2. If there are 4 or less fixed points, each is used as a detection point. If there are more than four fixed points, the relevant specification should be specified
4 representative fixed points for detection points.
Note 3. In special cases, for example, for large or complex samples, if the test point is required elsewhere (not close to the fixed point), it should be in the relevant specification
Regulations.
Note 4. When a large number of small samples are installed in a fixture, or when a small sample has many fixed points, in order to derive the control signal, a single check
(Ie reference point), but this point should be selected from the fixed point of the sample and fixture and should not be selected from the fixture and the fixed point of the shaker. This is only when the fixture is loaded
It is feasible that the minimum resonant frequency after the load of the sample is sufficiently higher than the upper limit of the test frequency.
3.2.2
From the point selected in the test point, the signal at that point is used to control the test in order to meet the requirements of this part.
3.2.2.1
To meet the requirements of this section, from a number of artificial or automatic method of synthesis of the reference point.
3.3
3.3.1
A single point of control is achieved by using a signal from a sensor at a reference point so that the reference point is maintained at a specified level of vibration
GB/T 2423.10-2008/IEC 60068-2-6..1995
(See 4.1.4.1).
3.3.2
Multi-point control is the signal from each sensor at each test point, according to the requirements of the relevant specifications, continuous arithmetic or use of the average
Compare technical processing to achieve (see 4.1.4.1).
3.4
In each direction according to the specified frequency range. For example, 10 Hz to 150 Hz to 10 Hz.
3.5
T = NFF - () 1 x 100%
Where.
NF --- Unfiltered signal r. M. S value
F --- the filtered signal r. M. S value.
Note. refers to the signal used to control the test, such as acceleration, speed, displacement (see A.2.2).
3.6
Movement at the reference point vibration drive frequency (see 4.1.1).
3.7
The motion described by the broadband signal returned by the reference point sensor.
3.8
Describe the dissipation of energy in the system architecture. In fact damping depends on many parameters, such as structural systems, vibration modes, strain, action
Force, speed, material, connection slip and so on.
3.9
Frequency in the following cases.
- caused by vibration, the sample presents an abnormal and/or deteriorated performance.
- mechanical resonance and/or other effects such as vibrations.
3.10
From the vibration response check, in fact the resonant frequency automatically concentrated frequency.
3.11
Covering the hazard frequency of 0.8 to 1.2 times the frequency sweep range.
3.12
The standard acceleration produced by the gravitational pull of the earth varies with altitude and geographic latitude.
GB/T 2423.10-2008/IEC 60068-2-6..1995
4 test equipment
4.1 Feature requirements
The required characteristics of the complete vibration system are composed of power amplifiers, exciter, test fixtures, samples and control systems.
4.1.1 Basic movement
The basic motion should be a sine function of time, and the fixed points of the sample should be substantially in phase and move along a parallel line and conform to 4.1.2
And 4.1.3.
4.1.2 parasitic movement
4.1.2.1 Transverse movement
The maximum amplitude on the detection point perpendicular to the specified vibration axis. When the frequency is less than or equal to 500Hz, not more than the specified amplitude
50%; more than 500Hz, not more than 100% of the specified amplitude. The measurement of lateral motion is only required within the specified frequency range. in
In special cases, for example, for small samples, the relevant specification may specify that the amplitude of lateral motion is allowed to be no more than 25%.
In some cases, it is difficult to achieve the above requirements for large, high quality samples or at certain frequencies. Relevant specification
Should indicate the following applies.
A) indicate and record any transversal movement that exceeds the above requirements in the report.
B) It is known that lateral movement is harmless to the sample and is not monitored.
4.1.2.2 Rotational motion
In the case of loading large or large samples, attention should be paid to the vibratory motion of the vibrating table. Therefore, the relevant norms should be provided
An allowable amount. Measured values should be recorded in the test report (see A.2.4).
4.1.3 Signal Tolerance
Unless otherwise specified in the specification, the acceleration signal tolerance shall be measured. Measurements should be made at the reference point, and the frequency coverage should be
5000Hz or 5 times the drive frequency of the smaller. If the specification otherwise provides, this maximum analysis frequency may extend to or beyond
Sweep test frequency upper limit. Unless otherwise specified in the specification, the signal tolerance shall not exceed 5% (see 3.5).
As specified in the specification, the tracking filter can be used to restore the acceleration amplitude of the control signal at the basic drive frequency to the specified value
(See A.4.4).
For large or complex samples, a part of the signal in the frequency range can not meet the specified tolerances and the use of the tracking filter is not feasible
, The acceleration amplitude does not need to be restored. But the signal tolerance should be recorded in the report (see A.2.2).
Note. Selecting a digital control or analog control system will have a greater impact on reproducibility if the tracking filter is not used and the signal tolerance exceeds 5%
A. 4.5).
Regardless of whether the tracking filter is used or not, the specification may require that the signal tolerance and the affected frequency range be recorded in the test report (see
A. 2.2).
4.1.4 Amplitude tolerance
The basic motion amplitude on the required test points and reference points on the required axis shall be equal to the specified value and shall be within the following tolerance ranges. This
Tolerances include instrumental errors. The specification may require that the measurement uncertainty assessment and its confidence level be given in the test report.
It may be difficult to achieve the required tolerances for lower frequency or large size samples or high quality samples. In this case need to be more
Wide tolerance or alternative methods. Shall be specified in the relevant specification and recorded in the test report.
4.1.4.1 reference point
Reference point control signal tolerance. ± 15% (see A.2.3).
The specification should specify whether to use single point control or multipoint control. If the use of multi-point control, should be clearly on the detection points
The average value of the signal is controlled to the predetermined value, or the signal at the selected point (e.g., the maximum amplitude point) is controlled to the prescribed value
(See A.2.3).
Note. If it is not possible to use single-point control, the average is used for multi-point control or multiple points in the detection point. In this multi-point control of the situation
Circumstances, this point is set the reference point. This method should be recorded in the test report.
GB/T 2423.10-2008/IEC 60068-2-6..1995
4.1.4.2 detection points
At each detection point.
Less than or equal to 500Hz. ± 25%;
Higher than 500Hz. ± 50%;
(See A.2.3).
4.1.5 Frequency Tolerance
The following frequency tolerances are provided.
4.1.5.1 sweep durability
Less than or equal to 0.25 Hz. ± 0.05 Hz;
From 0.25Hz to 5Hz. ± 20%;
From 5Hz to 50Hz. ± 1Hz;
Above 50Hz. ± 2%.
4.1.5.2 fixed frequency durability
A) Fixed frequency. ± 2%;
B) Nearly fixed frequency.
Less than or equal to 0.25 Hz. ± 0.05 Hz;
From 0.25Hz to 5Hz. ± 20%;
From 5Hz to 50Hz. ± 1Hz;
Above 50Hz. ± 2%.
4.1.5.3 Measurement of hazardous frequencies
In comparison with the dangerous frequencies before and after the durability test (see 8.1), the following tolerances are used during the vibration response check.
Less than or equal to 0.5 Hz. ± 0.05 Hz;
From 0.5Hz to 5Hz. ± 10%;
From 5Hz to 100Hz. ± 0.5Hz;
Higher than 100Hz. ± 0.5%.
4.1.6 sweep frequency
The sweep should be continuous and the frequency should vary exponentially over time (see A.4.3). The sweep rate should be one octave per minute
The tolerance is ± 10%. This may vary depending on the vibration response check (see 8.1).
Note. Because the digital control system sweep of the "continuity" is not absolutely accurate, but this error is not very practical significance.
4.2 Installation
Unless otherwise specified in the specification, the sample shall be installed on the test equipment in accordance with the requirements of GB/T 2423.43. It is usually installed in vibration reduction
The sample on the device is also visible in Note 8.2.2. 3.1, A 3.2 and A. 5.
5 harsh grade
The harsh rating of the vibration test is determined by three parameters. Ie the frequency range, the amplitude of the vibration and the duration of the durability test (by sweep frequency)
Cycle number or time given).
For each parameter, the specification should be selected from the values listed below. Or the relevant data from other known sources (eg
Such as GB/T 4796). If there is a substantial difference from the known environment, the relevant specification should make the relevant provisions.
In the case where the actual environmental conditions are known, in order to give the test some flexibility, the shape of the acceleration amplitude-frequency characteristic curve can be specified.
In this case, the specification should describe the shape of the curve as a function of frequency. Shall, as far as possible, select a different amount in the values given in this section
Level and the corresponding frequency range, ie inflection point.
Appendix B gives examples of harsh levels of components, and Appendix C gives examples of harsh levels of equipment (see A.4.1 and A.4.2).
GB/T 2423.10-2008/IEC 60068-2-6..1995
5.1 frequency range
The specification should select a lower frequency from Table 1 and select an upper frequency from Table 2 to determine the frequency range. recommended
The frequency range is shown in Table 3.
B. 1, C 1 and C. 2 gives examples of harsh ratings for special purposes.
Table 1 Lower frequency
0.1
Table 2 Upper limit frequency
Table 3 Recommended frequency range
1 to 35
1 to 100
10 to 55
10 to 150
10 to 500
10 to 2000
10 to 5000
55 to 500
55 to 2000
55 to 5000
100 to 2000
5.2 vibration amplitude
The specification should specify the amplitude of the vibration (displacement amplitude or acceleration amplitude, or both).
The crossover frequency is specified as the displacement, and the crossover frequency is specified as the constant acceleration. Table 4 and Table 5 show the different crossover frequencies
The recommended value of the displacement and acceleration amplitude.
Each displacement amplitude has a corresponding acceleration amplitude (shown in Table 4 and Table 5 on the same grid). So at the crossover frequency
The upper vibration magnitude is the same (see A.4.1).
When the specified crossover frequency is not technically applicable, the specification may separately specify the crossover frequency and its corresponding displacement - plus
Speed amplitude. There may be more than one crossover frequency in some cases.
Note. The relationship between amplitude and frequency is shown in Fig. 1, Fig. 2 and Fig. But should be considered when used in low frequency areas. 4.1.
GB/T 2423.10-2008/IEC 60068-2-6..1995
The upper limit of the frequency of only 10Hz test, usually in the entire frequency range using the method of positioning shift amplitude. So in Table 6 and Figure 3
Only the displacement amplitude is given.
5.3 Durability of Durable Tests
The specification should select the duration of the durability test from the recommended values given below. If the specified duration results in each axis
Line or frequency equal to or greater than 10 h, can be divided into several separate test cycles, but should not reduce the stress on the sample (see A.1
And A. 6.2).
5.3.1 sweep durability
The duration of the durability test on each axis is given by the number of sweep cycles (see 3.4). The relevant specifications can be given from the values given below
Select.
1,2,5,10,20,50,100.
When more sweep cycles are required, the same series of values as the above values should be used (see A.4.3).
Table 4 Low commutation frequency (8H z to 10H z) Recommended vibration amplitude
The amplitude of the displacement below the crossover frequency is higher than the acceleration amplitude of the crossover frequency
Note 1. All values listed in the table are peak amplitude.
Note 3. The displacement amplitude of 15mm in the table is mainly applied to the selection of hydraulic vibration table.
Table 5 High commutation frequency (58H z to 62H z) Recommended vibration amplitude
The amplitude of the displacement below the crossover frequency is higher than the acceleration amplitude of the crossover frequency
Note 1. All values listed in the table are peak amplitude.
GB/T 2423.10-2008/IEC 60068-2-6..1995
Table 6 applies only to the recommended values for the amplitude of the upper limit of the frequency range to 10H z
Displacement amplitude
Note 1. All values listed in the table are peak amplitude.
Note 2. The reference value is the approximate value derived from the millimeter value.
Note 3. Displacement amplitude greater than 10mm is mainly applied to hydraulic shaking table selection.
5.3.2 fixed frequency durability
5.3.2.1 at hazardous frequencies
The specification can be selected in the values given below for the vibration response check (see 8.1) found in each axis
Of the durability of each dangerous frequency, the tolerance is +5% 0 (see A.1 and A.6.2).
10 min, 30 min, 90 min, 10 h.
See Table A. for near-fixed frequency durability. 1.
5.3.2.2 at a predetermined frequency
The specification should take into account the total time that the sample may be subjected to vibrations during the full working life of the specified duration. response
The combination of each specified frequency and axis shall be subjected to a stress cycle with an upper limit of 107 times (see A.1 and A.6.2).
6 pretreatment
The specification may require pretreatment and conditions (see GB/T 2421-1999).
7 initial check
The specification shall specify the appearance, size and function of the specimen (see A.9).
8 test
The specification shall specify the number of axes and relative positions of the sample subjected to vibration. If the relevant specification is not specified, the sample should be in three mutually
Vertical axis on the line in order to withstand vibration, and axial selection should be the most likely to reveal the direction of failure.
The control signal of the reference point shall be derived from the signal of each detection point and used for single point or multipoint control (see A.4.5).
The relevant test procedures should be selected at the following procedure. Appendix A gives the selection guidelines. Usually, the test procedure
Are carried out in the same axial direction, and then repeat in the other axial direction (see A.3).
Special measures must be specified for samples that normally operate with a shock absorber when removing the shock absorber (see A.5).
When the specification is required, control the specified vibration amplitude to limit the maximum driving force of the vibration system. The specification should specify the limit
Large driving force method (see A.7).
8.1 Vibration response check
In order to study the response characteristics of the sample under vibration conditions, the relevant specification may require a vibration response check in the defined frequency range.
Generally, more than one sweep cycle should be carried out under the same conditions as the durability test (see 8.2). Such as using less than the specified vibration amplitude and sweep
Rate, the response characteristics can be determined more precisely. But should avoid taking the sample for too long and over stress (see A.3.1).
If required by the relevant specification, the sample should be operated during the vibration response check. If the work of the sample can not evaluate its mechanical vibration
, The sample should be in an inactive state for additional response checks.
During the vibration response check, the characteristics of the sample and the vibration response data are checked in order to determine the hazard frequency. These frequencies, amplitude
Values and characteristics of the sample should be recorded in the test report (see A.1). The specification should specify the measures taken.
GB/T 2423.10-2008/IEC 60068-2-6..1995
If numerical control is used to determine the dangerous frequency on the graph of the response curve, it should be noted that the number of data points per sweep
System system in the display resolution is limited (see A.3.1).
In some cases, the specification ma......
......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
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