Life Time Testing
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Transcript of Life Time Testing
LIFE TIME TESTINGor
Highly Accelerated Life Test
Agenda
Scope of Life Time Testing
Type of Tests Performed
Equipment used in different industry branches
Lifetime testingGoals:
To accelerate product reliability during the
engineering development;
To identify the weaknesses using a small number
of samples (sometimes one or two but preferably at
least five) in the shortest possible time and at least
expense;
It characterizes the equipment under test, and
identifies the equipment's safe operating limits
and design margins.
Lifetime testing
Types of stresses during lifetime testing
• Thermal stresses:
• Low/high temperature storage;
• Low/high temperature operation;
• Temperature cycle with specified temperature change rate;
• Rapid change of temperature with specified temperature change rate;
• Composite temperature/humidity cyclic test;
Types of stresses during lifetime testing
•Mechanical stresses:
• Sinus vibration test and random vibration with temperature change;
• Sinus vibration;
• Random vibration;
•Mechanical shock;
• Drop test.
Types of stresses during lifetime testing
•Other stresses:• Chemical loads;• Protection against foreign objects;•Water intrusion;• Connector pin push/pull test.
Other tests depending on Industry AEROSPACE
Other tests depending on Industry AEROSPACE
All-axis broadband vibration and
rapid thermal cycling
Military - Old Style
Other tests depending on Industry Military
When do we find failures
Q&A
Thank You !