1. ENVIRONMENTAL TESTING OVERVIEW QUALIFICATION TESTS MIL-STD-810 F PRODUCTION SCREENING HIGH ACCELERATED TESTS (HALT & HASS) ENVIRONMENTAL STRESSES SCREENING STRENGHT ACCELERATION FACTORS ACCELERATED TEST MACHINES ACCELERATED TEST ADVANTAGES CONTENTS Trondheim, Februar, 2003

2. ( ENVIRONMENTAL TESTING APPLICATIONS QUALIFICATION TESTS ENVIRONMENTAL STRESS SCREENING (ESS) HIGH ACCELERATED TEST (LIFE OR ESS)

3. 1 - QUALIFICATION TEST THIS IS THE MOST COMMON/KNOWN TEST WHICH :  VERIFY THE COMPLIANCE WITH THE ENVIRONMENTAL REQUIREMENTS FOR THE PRODUCT, u ALLOWS TO SUPPLY QUALITY PRODUCTS ABLE TO PERFORM WITHIN THE SPECIFIED OPERATING ENVIRONMENT NOTE : THIS IS THE WRONG PLACE FOR SURPRISES, ENVIRONMENTAL DESIGN MISTAKES WILL BE VERY EXPENSIVE!

4. STANDARD TOOLS FOR QUALIFICATION TESTS

5. CONTENTS PART TWO : LABORATORY TEST METHODS 500Low Pressure (Altitude) 501High Temperature 502Low Temperature 503Temperature Shock 504Contamination by Fluids 505Solar Radiation (Sunshine) 506Rain 507Humidity 508Fungus 509Salt Fog 510Sand and Dust 511Explosive Atmosphere 512Immersion 513Acceleration 514Vibration 515Acoustic Noise 516Shock 517Pyroshock 518Acidic Atmosphere 519Gunfire 520Temperature, Humidity, Vibration, Altitude 521Icing/Freezing Rain 522Ballistic Shock

6. THIS IS A SCREENING DURING THE PRODUCTION PROCESS WHICH : ACCELERATE THE TEST OBJECT LIFE IN ORDER TO DETECT “INFANT MORTALITY” AND LATENT FAILURES OF THE TEST OBJECT LIFE 2 - ESS

7. ESS TARGETS  TO MEET RELIABILITY REQUIREMENTS FOR CRITICAL SYSTEMS IN TRASPORTATION, TELECOMUNICATION, MILITARY...  TO DECREASE THE WARRANTY COST AND SOMETIMES THE TOTAL PRODUCTION COSTS  TO IMPROVE THE SUPPLIER IMAGE THROUGH IMPROVED MTBF AND LIFE CYCLE COST OF THE PRODUCT  TO VERIFY THAT THE PRODUCT CAN RELIABLY PERFORM IN THE SPECIFIED ENVIRONMENT

8. ESS TECHNIQUES THIS IS ONLY A SURVEY ! (EUROPEAN) 0 10 20 30 40 Random Vibration High temperature Elettrical stress Thermal shock Sin Vibration Low temperature Sweep Sin Vibration Combined environment Humidity Acceleration Mechanical Shock Relative weight Altitude Thermal cycling Industrie S.p.A.

9. ESS TOOLS “FAST” CHAMBER COMBINED WITH SHAKER

10. Main Characteristics External dimension 1400x1780x1950 mm Internal Dimension 580x510x420 mm Maximum Load 30 Kg Temperature Range -80°C / +220°C Temperature Accuracy  0.5°C Heating Temperature Rate 40°C/min from -55°C to +125°C Cooling Temperature Rate 28°C/min from +125°C to -55°C Recovery time 15min (-55°C / +125°C) with 6 Kg Max electrical power 17Kw CST 130 S

11. 3 - HIGH ACCELERATED LIFE THIS IS A HIGH ENVIRONMENTAL AND FUNCTIONAL STRESS APPLIED TO A TEST OBJECT TO PRODUCE A “HIGH ACCELERATION” OF THE LIFE

12. SCREENING STRENGTH TEMPERATURE CYCLING 5°C/min cycles screeningstrength 10°C/min 15°C/min 20°C/min 0.1 0.3 0.2 0.4 0.5 0.7 0.6 0.8 10 40 3020 50 Industrie S.p.A.

13. RELIABILITY HALT 2-6 UNITS ESS 100-200 UNITS QUAL 1- 20 UNITS time reliability

14. TYPICAL CHARACTERISTICS FOR HIGH ENVIRONMENTAL STRESS CHAMBER  VOLUME ~ 1M 3  COOLING ~ MECHANICAL AND/OR LN2  TEMP. RANGE ~ -60°C TO 100°C  TEMP. RATE ~ 5 TO 30°C/MIN  AIR FLOW ~ 2 TO 5M/SEC  POWER ~ 40 TO 200 KW  INTERFACE ~ SHAKER  PRICE ~ 40K TO 250K USD

15. TEMPERATURE-HUMIDITY- VIBRATION-VACUUM HALT CHAMBER FOR AERONAUTICAL APPLICATIONS

16. HALT CHAMBER WITH HORIZONTAL & VERTICAL VIBRATIONS

17. BASICS OF ACCELERATION BASIC PHILOSOFY IS : RAPIDLY CYCLING BETWEEN EXTREME ENVIRONMENTAL CONDITIONS ACCELERATION CAN BE APPLIED ALSO TO CORROSION TESTS

18. ACCELERATING CORROSION THE “DRY CORROSION TEST” : èAPPLY THE ACCELERATION BASIC CONCEPTS, èMATCHES THE REAL LIFE EVENTS GOOD WEATHERRAIN WINDY DAYNIGHT DEW DRY WET & SALTY

19. TESTING TOOL ELECTRICAL & CONTROL SYSTEM TEST CHAMBER PNEUMATIC & HYDRAULIC SYSTEMS ANTI-DRIPPING COVER MODULAR CONFIGURATION