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GB/T 2423.39-2018 English PDF (GBT2423.39-2018)

GB/T 2423.39-2018 English PDF (GBT2423.39-2018)

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GB/T 2423.39-2018: Environmental testing - Part 2: Test methods - Test Ee and guidance: Loose cargo testing including bounce

GB/T 2423.39-2018
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 19.040;29.020
K 04
GB/T 2423.39-2018 / IEC 60068-2-55:2013
Replacing GB/T 2423.39-2008
Environmental testing - Part 2: Test methods - Test Ee
and guidance: Loose cargo testing including bounce
(IEC 60068-2-55:2013, Environmental testing - Part 2-55: Tests - Test
Ee and guidance - Loose cargo testing including bounce, IDT)
ISSUED ON: DECEMBER 28, 2018
IMPLEMENTED ON: JULY 01, 2019
Issued by: State Administration for Market Regulation;
Standardization Administration of the People's Republic of
China.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative references ... 5
3 Terms and definitions ... 6
4 Requirements for the test apparatus ... 6
4.1 General test description ... 6
4.2 Characteristics of the testing machine ... 7
4.3 Motion of the platform... 7
4.4 Tolerances on the horizontal accuracy of platform ... 7
4.5 Control ... 7
4.6 Mounting ... 8
4.7 Horizontal motion of specimen ... 8
5 Severities ... 8
5.1 Severity for sinusoidal motion of the platform ... 8
5.2 Severity for random motion of the platform ... 9
5.3 Severity for mixed mode motion of the platform ... 9
5.4 Severity for use of special bounce testing machines ... 9
6 Preconditioning ... 9
7 Initial measurements and functional performance test ... 9
8 Testing ... 10
9 Recovery ... 11
10 Final measurements ... 11
11 Information to be given in the relevant specification ... 11
12 Information to be given in the test report ... 12
Annex A (normative) Guidance ... 13
Annex B (informative) Comparison amongst impact tests ... 20
Bibliography ... 21
Foreword
GB/T 2423 "Environmental testing - Part 2: Test methods - Test Ee and
guidance: Loose cargo testing including bounce" is divided into several parts according to the test methods.
This Part is Part 39 of GB/T 2423.
This Part was drafted in accordance with the rules given in GB/T 1.1-2009. This Part replaces GB/T 2423.39-2008 "Environmental testing for electric and electronic products - Part 2: Tests - Test Ee: Bounce". Compared with GB/T 2423.39-2008, the main technical changes in this Part are as follows:
- change the standard's name;
- allow bulk cargo testing in a more general sense; no longer correspond to special testing machines; allow the use of any suitable equipment; sine and random vibration can be used; rotating table movement test is listed in Annex A as a historical method;
- add Clause 9 "Recovery" and Clause 12 "Information to be given in the test report";
- delete Figure 3; adjust Figure 1 and Figure 2 to Annex A; add typical reference point position icon in Figure A.1;
- Annex A is modified from "informative" to "normative";
- Annex B is changed in the form of tables; delete the comparison with Test Eb and Test Ed Method 1 and Method 2.
This Part uses translation method to identically adopt IEC 60068-2-55:2013 "Environmental testing - Part 2-55: Tests - Test Ee and guidance - Loose cargo testing including bounce".
The Chinese documents which have consistency with the international
normative references in this Part are as follows:
- GB/T 2421.1-2008, Environmental testing for electric and electronic
products - General and guidance (IEC 60068-1:1988, IDT);
- GB/T 2423.10-2008, Environmental testing - Part 2: Test methods - Test Fc: Vibration (sinusoidal) (IEC 60068-2-6:1995, IDT);
- GB/T 2423.56-2006, Environmental testing for electric and electronic
products - Part 2: Test methods - Test Fh: Vibration, broad-band random Environmental testing - Part 2: Test methods - Test Ee
and guidance: Loose cargo testing including bounce
1 Scope
This Part of GB/T 2423 provides a standard procedure for determining the ability of a specimen to withstand specified severities of bounce, e. g. when transported as loose cargo on wheeled vehicles.
This test is primarily intended for specimens prepared for transportation, including specimens in their transport case when the latter may be considered as part of the specimen itself or packages. This test should not be used as a low-frequency vibration test.
Although primarily intended for electrotechnical products, this test is not restricted to them and may be used in other fields where desired.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
IEC 60068-1, Environmental testing - Part 1: General and guidance 1
IEC 60068-2-6, Environmental testing - Part 2-6: Tests - Test Fc: Vibration (sinusoidal)
IEC 60068-2-64, Environmental testing - Part 2-64: Tests - Test Fh: Vibration, broadband random and guidance
IEC 60068-2-80, Environmental testing - Part 2-80: Tests - Test Fi: Vibration - Mixed mode
ISO 13355, Packaging - Complete, filled transport packages and unit loads - Vertical random vibration test
ASTM D4169-09, Standard Practice for Performance Testing of Shipping
Containers and Systems

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