Course Overview
Accelerated stress testing is one of the key resources in the PoF approach. Accelerated stress test exposures simulate product life cycles over compressed time periods by accelerating the damage accumulation rate for relevant wearout damage mechanisms. If done early in the development phase, in conjunction with physics-of-failure (PoF) design, accelerated testing can enhance process and design maturity, and enable early introduction of mature products with robust design margins. Accelerated stress exposures are also useful in the production phase to ensure process control. However, accelerated testing may not be efficient unless one understands how to select the right type of accelerated test, how to determine the testing stresses, how to understand the test results, and how to correlate the test to the field life. PoF approach is the key to answer these crucial questions and achieve an efficient accelerated product qualification.
Participants will learn how to make accelerated stress testing a value-added activity and use accelerated test results to take pro-active corrective measures early in the design and production phases, thus ensuring consistently high reliability and quality of design and processes.
Course Outline
1. Introduction
- Qualification
in Product Development
- Purpose
of Qualification Tests
- Change
in Product Certification Methodology
2. Reliability
Assessment Process
- Similarity
Analysis for Reliability Prediction
- How
to Determine Qualification Conditions
- Define
lifetime application (manufacturing, environment and use) conditions
based on target market segments
3. Stress
Limits and Margins
4. Types
of Accelerated Tests
- Qualitative
Tests
- Quantitative
Tests
5. Qualitative
Tests
- Benefits
- Unanswered
questions
6. Quantitative
Accelerated Life Testing
- “Usage
Rate Acceleration” or “Continuous Use Acceleration”
- The
Problem with “Continuous Use Acceleration”
- Accelerating
High Usage Products
- Different
“Accelerated” Stress Conditions Can Give Different Results
- Qualification
for Life Assessment
7. Life
– Stress Relationship
- Arrhenius
Relationship
- Eyring
Relationship
- Inverse
Power Law Relationship
- Two
Parameter Relationship
8. Two-Stress
Type Testing
9. Case
Studies
Past Customers
- DERA - United Kingdom
- GM - Michigan
- Hobbs Engineering - United States
- ITI - India
- Lucas - United Kingdom
- MoD - United Kingdom
|
- Microsoft - Washington
- NokiaSalo - Finland
- Saturn - Michigan
- Schlumberger - California
- Tubitak - Turkey
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*This course has also been presented as a public offering in College Park, MD.*
Related Texts
Contact
Michael Pecht
301-405-5323
education@calce.umd.edu
Bldg. 89, Room 1103
University of Maryland
College Park, MD 20742
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