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 !