Standard No.:	GB/T 2423.35-2019
Chinese Name:	环境试验 第2部分：试验和导则 气候(温度、湿度)和动力学(振动、冲击)综合试验
English Name:	Environmental testing—Part 2:Tests and guidance—Combined climatic(temperature/humidity)and dynamic(vibration/shock)tests
Professional Classification:	K04 Basic standards and general methods
ICS Classification:	19.040
Issued by:
Issued on:	2019-06-04
Implemented on:	2020-01-01
Status:	VALID
Replace:	GB/T2423.35-2005 Environmental testing for electric and electronic products?Part 2:Test Methods?Test Z/AFc：Combined cold/vibration(sinusoidal) tests for both heat-dissipating and non-heat-dissipating specimens
Language:	English
File Format:	PDF
Word Count:	10000 words
Price(USD):	300 (USD)
Delivery:	via email in 1-3 business day

Environmental testing—Part 2: Tests and guidance—
Combined climatic (temperature/humidity) and dynamic (vibration/shock) test

1 Scope

This part of GB/T 2423 provides the test methods and guidance for testing equipment or components under combined climatic and dynamic conditions.

The purpose of combined testing is to investigate to what extent the equipment or components are affected by combined climatic and dynamic tests.

The method of combined tests applies to detecting electrical, mechanical or other physical variations.

2 Normative references

The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

IEC 60068-1 Environmental testing—Part 1: General and guidance
IEC 60068-2-1 Environmental testing—Part 2-1: Tests—Test A: Cold
IEC 60068-2-2 Environmental testing—Part 2-2: Tests—Test B: Dry heat
IEC 60068-2-6 Environmental testing—Part 2-6: Tests—Test Fc: Vibration (sinusoidal)
IEC 60068-2-14 Environmental testing—Part 2-14: Tests—Test N: Change of temperature
IEC 60068-2-27 Environmental testing—Part 2-27: Tests—Test Ea and guidance: Shock
IEC 60068-2-30 Environmental testing—Part 2-30: Tests—Test Db: Damp heat, cyclic (12 h+ 12 h cycle)
IEC 60068-2-64 Environmental testing—Part 2-64: Tests—Test Fh: Vibration, broadband random(digital control)and guidance
IEC 60068-2-78 Environmental testing—Part 2-78: Tests Test Cab, Damp heat, steady state
IEC 60068-2-80 Environmental testing—Part 2-80: Tests—Test Fi: Vibration—Mixed mode

3 Testing

3.1 General

All parameters such as temperatures, cold, dry heat, temperature change, type of vibration, exposure time to temperature, exposure time to vibration, number of shocks, repetition time of shocks, axis of shock or vibration, state of operation and so on, shall be selected from the relevant IEC 60068-2 standards or relevant specification.

The combinations of environmental conditions shall be selected to ensure that electrical and mechanical performances of the specimen are satisfactory under storage, transportation and operational conditions.

Certain combinations of possible tests shown in Table 1 may not be practicable. Examples of these include the following:

——full sweep of sinusoidal vibration spectrum not completed during change of temperature or temperature cycling;

——temperature stabilization of dynamic non linear systems, e.g. anti-vibration mounts during vibration with change of temperature or temperature cycling;

——full cycle of mixed mode vibration during change of temperature or temperature cycling.