Test Background
The combined effects of temperature, humidity, vibration and altitude can cause the following typical failures in equipment: breakage of glassware and optical equipment, stuck or loose moving parts, component separation, degradation of electronic component performance due to parameter drift, fogging or mechanical failure of optoelectronic components due to rapid condensation of water or frost, rupture of solid particles or grain columns in explosives, failures caused by differences in expansion or contraction rates of different materials, deformation or cracking of components, cracking of surface coatings, leakage of sealing components, failures caused by insufficient heat dissipation, etc.
Military equipment comprehensive environmental testing can measure the comprehensive environmental adaptability of various military equipment and determine the comprehensive effects of temperature, humidity, vibration and altitude on the safety, integrity and performance of airborne electronic and electromechanical equipment during ground and flight operations.
Zhongke Testing Reliability Experiment Center has the capabilities of climatic environmental testing and mechanical environmental testing of various military equipment, and provides professional comprehensive environmental testing services for military equipment.
Scope of tests
Field engineering machinery, river crossing equipment, three defenses (anti-nuclear, anti-chemical, anti-biological weapons) equipment, communication command equipment, reconnaissance and detection equipment, radar, sonar, electronic countermeasures equipment, intelligence processing equipment, military electronic computers, auxiliary aircraft, service ships, military surveying and mapping equipment, meteorological support equipment, military vehicles and camouflage equipment and other military equipment.
Test method
This can be accomplished by combining all appropriate environmental stresses into a single test, or by a series of separate integrated tests. When separate combined tests are used, the most common combined stress test is:
1) Temperature/vibration test
2) Temperature/humidity/altitude test
3) Temperature/humidity test with auxiliary cooling
Test standard:
GJB150.24A-2009 Military equipment laboratory environmental test methods Part 24: Temperature-humidity-vibration-height test
GJB150.2A-2009 Military Equipment Laboratory Environmental Test Methods Part 2: Low Air Pressure (Altitude) Test
GJB150.3A-2009 Military equipment laboratory environmental test methods Part 3: High temperature test
GJB150.4A-2009 Military equipment laboratory environmental test methods Part 4: Low temperature test
GJB150.16A-2009 Military equipment laboratory environmental test methods Part 16: Vibration test
GJB150.1A-2009 Military equipment laboratory environmental test methods Part 1: General requirements
GJB 4239 General requirements for equipment environmental engineering
