Standard No.:	GB/T 4857.7-2005
Chinese Name:	包装 运输包装件基本试验 第7部分： 正弦定频振动试验方法
English Name:	Packaging—Basic tests for transport packages—Part 7:Sinusoidal vibration test method at constant frequency
Professional Classification:	A83 Packaging method
Professional Classification:	GB National Standard
ICS Classification:	55.020
Issued by:
Issued on:	2005-05-25
Implemented on:	2005-11-01
Status:	VALID
Language:	English
File Format:	PDF
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Packaging — Basic Tests for Transport Packages — Part 7: Sinusoidal Vibration Test Method at Constant Frequency

1 Scope

This part of GB/T 4857 specifies the main performance requirements, test procedures and information of test report for test apparatus used to carry out vibration tests on transport packages or unit loads using sinusoidal vibration at constant frequency.

This part is applicable to assess the performance of transport packages and unit loads in terms of the strength or the protection that they offer to their contents when subjected to sinusoidal vibration at constant frequency. It may be performed either as a single test or as part of a sequence of tests.

2 Normative References

The following normative documents contain provisions which, through reference in this text, constitute provisions of this part of GB/T 4857. For dated references, subsequent amendments (excluding corrections), or revisions, of any of these publications do not apply to this part. However, parties to agreements based on this part are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies.

GB/T 4857.1 Packaging — Complete, Filled Transport Packages — Identification of Parts When Testing
GB/T 4857.2 Packaging — Transport Packages — Temperature and Humidity Conditioning
GB/T 4857.3 Packaging — Complete, Filled Transport Packages — Stacking Test Using Static Load
GB/T 4857.17 Packaging — Transport Packages — General Principles for the Compilation of Performance Test Schedules
GB/T 4857.18 Packaging — Transport Packages — Quantitative Data for the Compilation of Performance Test Schedules

3 Principle

The test specimen is placed on a vibration table and subjected to a vibration using an approximately sinusoidal excitation at a fixed low frequency. The atmospheric conditions, the duration of the test, the peak acceleration, the attitude of the test specimen and any method of restraint are predetermined.

When required, a load may be superimposed on the test specimen to simulate conditions of sinusoidal vibration at the bottom of a stack.