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Life Time Testing

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  • In Life Time Testing these stresses are applied in a controlled, incremental fashion while the unit under test is continuously monitored for failures. Once the weaknesses of the product are uncovered and corrective actions taken, the limits of the product are clearly understood and the operating margins have been extended as far as possible. The result is that a much more mature product can be introduced much more quickly with a higher degree of reliability.When Life Time Testing is applied during the design process, it can produce a very robust product without undue cost, because improvements are targeted only where they are needed. As failure modes are discovered and understood the product life can increase significantly. This makes the product more robust and risk of failure reduces drastically.
  • Transcript

    • 1. LIFE TIME TESTING or Highly Accelerated Life Test
    • 2.  Scope of Life Time Testing Type of Tests Performed Equipment used in different industry branches
    • 3. Goals: 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
    • 4. • 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
    • 5. • Mechanical stresses: • Sinus vibration test and random vibration with temperature change; • Sinus vibration; • Random vibration; • Mechanical shock; • Drop test.
    • 6. • Other stresses: • Chemical loads; • Protection against foreign objects; • Water intrusion; • Connector pin push/pull test.
    • 7. All-axis broadband vibration and rapid thermal cycling
    • 8. Q&A
    • 9. Thank You !