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.
Foreword II
1 Scope
2 Normative References
3 Principle
4 Test Apparatus
5 Test Procedures
6 Test Report
Annex A (Informative) Determination of Test Strength
