This standard specifies the main performance requirements, test procedures and test report contents of the test equipment used in the collision test of transport packages. This standard is applicable to the assessment of the impact strength of transport packages subjected to multiple repetitive mechanical collisions during transportation and the protection of the packaging to the contents. It can be used as a single test or as part of a series of tests. GB/T 4857.20-1992 Packaging Transport Package Collision Test Method GB/T4857.20-1992 Standard Download Unzip Password: www.bzxz.net
This standard specifies the main performance requirements, test procedures and test report contents of the test equipment used in the collision test of transport packages. This standard is applicable to the assessment of the impact strength of transport packages subjected to multiple repetitive mechanical collisions during transportation and the protection of the packaging to the contents. It can be used as a single test or as part of a series of tests.

National Standard of the People's Republic of ChinaWww.bzxZ.net
Packaging-Transport packagesBump test method
Subject content and scope of application
GB/T 4857. 20--92
This standard specifies the main performance requirements, test procedures and test report contents of the test equipment used in the bump test of transport packages.
This standard is applicable to the assessment of the impact strength of transport packages subjected to repeated mechanical collisions during transportation and the protection of the packaging to the contents. It can be used as a single test or as part of a series of tests. 2 Reference standards
GB/T4857.1 Method for marking various parts of packaging and transport packages GB/T4857.2 Temperature and humidity adjustment treatment of packaging and transport packages GB/T4857.3 Stacking test method for packaging and transport packages GB/T4857.17 General principles for compiling performance test outlines for packaging and transport packages GB/T4857.18 Quantitative data for compiling performance test outlines for packaging and transport packages 3 Test principle
Use the installation method of direct installation or transition structure, and fasten the test sample to the collision table with a strap to make it collide according to the specified peak acceleration, pulse duration, pulse repetition frequency and number of collisions. If necessary, a certain load can be added to the test sample to simulate the situation where the package is at the bottom of the cargo stack and is subjected to multiple repetitive mechanical collision environments. 4 Test equipment
4.1 The waveform and tolerance of the collision basic pulse generated by the collision table (see figure) should have a half-sine collision pulse similar to the nominal acceleration time curve represented by the dotted line in the figure. The waveform of the actual silicon impact pulse should be limited to the tolerance range indicated by the solid line in the figure. Approved by the State Administration of Technical Supervision on February 13, 1992 and implemented on October 1, 1992
GB/T 4857. 20 --- 92
Integration time 1.5D
The shortest time to monitor the pulse
Waveform and tolerance of the impact test pulse (half-sine wave) -1.2A
D-duration of the nominal pulse, ms1 A-peak acceleration of the nominal pulse, m/s4.2 The tolerance of the corresponding velocity change of the actual impact pulse during the test should be within ±20% of the nominal value. The calculation of the actual impact pulse velocity during the test should be integrated from 0.4D before the pulse to 0.1D after the pulse (see figure). 4.3 The indication error of the impact repetition rate of the collision table shall not exceed ±10%. 4.4 Within the specified working range of the collision table, the positive and negative accelerations perpendicular to the collision direction at the table detection point (generally based on the center point of the table) shall not exceed 30% of the nominal pulse acceleration value at any time. 5 Test procedure
5.1 Preparation of test samples
Prepare the test samples according to the requirements of GB/T4857.17. 5.2 Numbering of various parts of the test samples
Number the various parts of the test samples according to GB/T4857.1. 5.3 Pretreatment of test samples
Select a condition according to GB/T4857.2 to pretreat the test samples with temperature and humidity. 5.4 Temperature and humidity conditions during the test
The test should be carried out under the same temperature and humidity conditions as the pretreatment. If the same conditions cannot be achieved, the test should be carried out under temperature and humidity conditions as close to them as possible.
5.5 Test steps
5.5.1Record the temperature and humidity of the test site.
5.5.2 Place the test sample on the collision table in the normal transportation state, use direct installation or transition structure installation method, and fasten the test sample to the collision table with straps. The transition structure should have sufficient rigidity to avoid causing additional resonance. 5.5.3 Carry out collision test according to the predetermined bee value acceleration, pulse duration, pulse repetition frequency and number of collisions. If necessary, load can be added to the test sample, and the loading method should comply with the requirements of GB/T4857.3. 5.5.4 After the test, check the damage of the packaging and contents according to the relevant standards and analyze the test results. 6 Test report
The test report shall include the following contents:
Number of test samples:
GB/T 4857.20--92
Detailed description: Name, size, structure and material specifications of packaging container, accessories, cushioning pads, supports, fixing methods, sealing, bundling status and other protective measures;
Name, specification, model and quantity of contents; Mass of test samples and contents, in dry grams: Description of test equipment:
Installation method of test samples,
Predetermined state of test samples during test; Temperature, relative humidity and time during pretreatment; Temperature and relative humidity of test site;
Peak acceleration, pulse duration, pulse waveform, pulse repetition frequency and number of collisions: Record test results and submit analysis report! Explain the difference between the test method used and this standard, test date, signature of tester and seal of test unit. 331
GB/T4857.20—92
Appendix A
Choice of collision parameters
(reference)
A1 This reference provides the following values ​​for selection in collision test. Item
Peak acceleration (A)
Pulse duration (D)
Corresponding velocity change
=2AD/π
Pulse repetition frequency
Number of collisions
Pulse waveform
Additional instructions:
Times/min
This standard was proposed by the Ministry of Machinery and Electronics Industry of the People's Republic of China. This standard is under the jurisdiction of the Machinery Standardization Institute of the Ministry of Machinery and Electronics Industry. This standard was drafted by the Shanghai Institute of Optical Instruments. The drafters of this standard are Wei Qiling, Wu Yujiang, Huang Hong, and Chen Xianbiao. 332
Nominal value
60~100
1000±10
Approximate half sine wave
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