GB/T 4857 consists of the following parts, under the general title Packaging — Basic Tests for Transport Packages:
— Part 1: Identification of Parts When Testing;
— Part 2: Temperature and Humidity Conditioning;
— Part 3: Stacking Test Methods Using a Static Load;
— Part 4: Compression Test Method;
— Part 5: Vertical Impact Test Method by Dropping;
— Part 6: Rolling Test Method;
— Part 7: Sinusoidal Vibration Test Method at Constant Frequency;
— Part 8: Method of Revolving Hexagonal Drum Test;
— Part 9: Water Spray Test;
— Part 10: Sinusoidal Vibration Test Method Using at Variable Vibration Frequency;
— Part 11: Horizontal Impact Test Methods;
— Part 12: Water Immersion Test Method;
— Part 13: Low Pressure Test;
— Part 14: Toppling Test Method;
— Part 15: Controlled Horizontal Impact Test Method;
— Part 16: Stacking Test Using Compression Tester;
— Part 17: Quantitative Data for the Compilation of Performance Test Schedules;
— Part 18: Quantitative Data for the Compilation of Performance Test Schedules;
— Part 19: Information to Be Recorded in Distribution Trials;
— Part 20: Bump Test Method;
— Part 21: Mould-proof Packaging Test Method;
— Part 22: Unit Loads Stability Test Methods;
— Part 23: Random Vibration Test Method.
This part is Part 10 of GB/T 4857.
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 a variable 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 using a variable 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 vibrated at a frequency which varies at a constant logarithmic sweep rate between 3 Hz and 100 Hz, which may be followed by vibration between ±10% of the principal resonant frequencies within the range from 3 Hz to 100 Hz. The atmospheric conditions, the duration of the test, the peak acceleration, the attitude of the test specimen and its method of restraint are predetermined.
When required, a load may be superimposed on the test item to simulate conditions at the bottom of a stack.
4 Test Apparatus
4.1 Vibrating table
Foreword II
1 Scope
2 Normative References
3 Principle
4 Test Apparatus
5 Test Procedures
6 Test Report
Annex A (Informative) Determination of Vibration Test Duration
