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GB/T 4857.23-2021 PDF in English


GB/T 4857.23-2021 (GB/T4857.23-2021, GBT 4857.23-2021, GBT4857.23-2021)
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GB/T 4857.23-2021: PDF in English (GBT 4857.23-2021)

GB/T 4857.23-2021
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 55.020
CCS A 83
Replacing GB/T 4857.23-2012
Packaging – Basic Tests for Transport Packages
– Part 23: Vertical Random Vibration Test Method
(ISO 13355:2016, Packaging – Complete, Filled Transport Packages
and Unit Loads – Vertical Random Vibration Test, MOD)
ISSUED ON: OCTOBER 11, 2021
IMPLEMENTED ON: MAY 01, 2022
Issued by: State Administration for Market Regulation;
Standardization Administration of PRC.
Table of Contents
Foreword ... 3
Introduction ... 8
1 Scope ... 10
2 Normative References ... 10
3 Terms and Definitions ... 10
4 Test Principle ... 11
5 Test Equipment ... 11
5.1 Vibration bench ... 11
5.2 Vibration measurement control system ... 11
6 Test Procedure ... 12
6.1 Preparation of the test sample ... 12
6.2 The No. of each part of the test sample ... 12
6.3 Pre-treatment of test sample ... 12
6.4 Temperature and humidity conditions during the test ... 12
6.5 Test procedure ... 12
7 Test Report ... 13
Appendix A (Normative) Power Spectral Density Curve and Data for Random
Vibration of Generic Transportation ... 15
Appendix B (Informative) Power Spectral Density Curve and Data from the
Actually-Collected Random Vibration ... 16
Appendix C (Informative) Power Spectral Density Curve and Data for Testing in
Related International Random Vibration ... 19
Appendix D (Informative) Power Spectral Density Curve and Data for Random
Vibration of China's Highway Transportation and Beijing-Shanghai Railway
Transportation ... 22
Bibliography ... 26
Foreword
This document was drafted as per the rules specified in GB/T 1.1-2020 Directives for
Standardization – Part 1: Rules for the Structure and Drafting of Standardizing
Documents.
This Document is Part 23 of GB/T 4857. GB/T 4857 has published the following parts:
--- Packaging – Basic tests for transport packages – Part 1: Identification of parts
when testing;
--- Packaging – Basic tests for transport packages – Part 2: Temperature and
humidity conditioning;
--- Packaging – Basic tests for transport packages – Part 3: Stacking tests using
static load;
--- Packaging – Basic tests for transport packages – Part 4: Compression and
stacking tests using a compression tester;
--- Packaging –transport packages – fall test methods;
--- Packaging –transport packages – rolling test methods;
--- Packaging – Basic tests for transport packages – Part 7: Sinusoidal vibration test
method at constant frequency;
--- Packaging – Basic tests for transport packages – Part 9: Water spray test;
--- Packaging – Basic tests for transport packages – Part 10: Sinusoidal vibration
test method using a variable vibration frequency;
--- Packaging – Basic tests for transport packages – Part 11: Horizontal impact test
methods;
--- Packaging –transport packages – Immersed water test method;
--- Packaging – Basic tests for transport packages – Part 13: Low air pressure test
method;
--- Packaging –transport packages – Topping test method;
--- Packaging – Basic tests for transport packages – Part 15: Controlled horizontal
impact test method;
--- Packaging – Basic tests for transport packages – Part 17: General rules for the
compilation of performance test;
--- Packaging –transport packages – Information record of the flow test;
--- Packaging –transport packages – Crash test method;
--- Packaging –transport packages – Stability test method for unit loads;
--- Packaging – Basic tests for transport packages – Part 23: Vertical random
vibration test method.
This Document replaced GB/T 4857.23-2012 Packaging - Basic tests for transport
packages - Part 23: Random vibration test method. Compared with GB/T 4857.23-
2012, this Document made the following technical changes as follows besides the
structural adjustments and editorial modifications:
a) Change the scope of application and change random vibration into vertical
random vibration (see Clause 1 of this Edition; Clause 1 of the 2012 Edition);
b) Delete equalization, σ drive signal clipping and closed loop in "Terms and
Definitions" (see 3.1, 3.3, 3.4 of 2012 Edition);
c) Add 3 kinds of devices that can be equipped with the vibration table to limit the
test sample state (see 5.1 of this Edition);
d) Change the frequency resolution from 2Hz to 1Hz (see 5.1 of this Edition; 5.2.3
of 2012 Edition);
e) Delete the closed-loop control system (see 5.2.1, 5.2.2 of 2012 Edition);
f) Change the statistical degrees of freedom [see 5.2c) of this Edition; 5.2.3 of 2012
edition];
g) Delete the choice of test intensity (see 6.5 of 2012 Edition);
h) Delete equipment calibration (see 6.6 of 2012 Edition);
i) Add the limit of horizontal vibration component (see 6.5.3 of this Edition);
j) Add the requirement of collecting power spectral density for testing (see 6.5.7 of
this Edition);
k) Add the requirements for the acceleration root mean square value and power
spectral density deviation (see 6.5.8 of this Edition);
l) Delete the requirements for samples to be placed in an unfixed way and fixed way
on the vibration table (see 6.7.4 and 6.7.5 of 2012 Edition);
m) Delete the requirement to stop the test when the test sample has predetermined
damage (see 6.7.7 of 2012 Edition);
n) Delete the requirement to increase the test intensity for shortening the test time
(see 6.7.8 of 2012 edition).
This Document uses the redrafting method to modify and adopt ISO 13355:2016
Packaging – Complete, filled transport packages and unit loads – Vertical random
vibration test.
Compared with ISO 13355:2016, this Document has the structural changes:
a) Add the Clause 3 “Terms and Definitions”.
b) Adjust the Clause 3 of ISO 13355:2016 into Clause 4 of this Document.
c) Adjust the Clause 4 of ISO 13355:2016 into Clause 5 of this Document; adjust
4.1 and 4.2 of ISO 13355:2016 into 5.1 and 5.2 of this Document, respectively.
d) Adjust “The installation of test sample on vibration bench shall comply with the
provisions of 9.1.3.5 in GB/T 4857.17-2017” specified in Clause 4 of ISO
13355:2016 into 6.5.2 of this Document.
e) Adjust 5.1 of ISO 13355:2016 into 6.1 of this Document; adjust 5.2 of ISO
13355:2016 into 6.3 of this Document; and adjust Clause 6 of ISO 13355:2016
into 6.5 of this Document.
f) Add the Appendixes C and D.
The technical differences and causes between this Document and ISO 13355:2016
are as follows:
a) Regarding Normative References, this Document has made adjustments with
technical differences to adapt to China’s technical conditions. The adjustments
are reflected in Clause 2 Normative References. The specific adjustments are
as follows:
 Add the quotation of GB/T 4122.5 (see Clause 3 of this Edition);
 Use GB/T 4857.1 that modifies and adopts the international standard to
replace ISO 2006 (see 6.2 of this Edition);
 Use GB/T 4857.2 that modifies and adopts the international standard to
replace ISO 2233 (see 6.3 of this Edition);
 Use GB/T 4857.3 that equivalently adopts the international standard to
replace ISO 2234 (see 6.5.2 of this Edition);
 Add the quotation of GB/T 4857.17-2017 (6.5.2, 6.1 of this Edition);
b) Add the Clause 3 “Terms and Definitions”; give specific definitions on PSD and g
Packaging – Basic Tests for Transport Packages
– Part 23: Vertical Random Vibration Test Method
1 Scope
This Document specifies the vertical random vibration test principles, test equipment,
test procedures and test reports of transport packages.
This Document is applicable to the vertical random vibration test of transport packages
or unit loads. It is used to evaluate the strength of the package during vertical vibration
and the protection ability of the package to the contents. It can be used as a single test
or as a part of a series of tests.
2 Normative References
The provisions in following documents become the provisions of this Document
through reference in this Document. For the dated documents, only the versions with
the dates indicated are applicable to this Document; for the undated documents, only
the latest version (including all the amendments) is applicable to this Document.
GB/T 4122.5 Packaging terms - Part 5: Inspection and test
GB/T 4857.1 Packaging - Basic tests for transport packages - Part 1: Identification
of parts when testing (GB/T 4857.1-2019, ISO 2206:1987, MOD)
GB/T 4857.2 Packaging - Basic tests for transport packages - Part 2: Temperature
and humidity conditioning (GB/T 4857.2-2005, ISO 2233:2000, MOD)
GB/T 4857.3 Packaging - Basic tests for transport packages - Part 3: Stacking
test methods using a static load (GB/T 4857.3-2008, ISO 2234:2000, IDT)
GB/T 4857.17-2017 Packaging - Basic tests for transport packages - Part 17:
General rules for the compilation of performance test (ISO 4180:2009, MOD)
3 Terms and Definitions
For the purposes of this Document, the terms and definitions given in GB/T 4122.5 and
the following apply.
3.1 Power spectral density; PSD
......
 
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.