Cover
Table of Contents
Preface
Acknowledgments
CHAPTER 1 Introduction
Purpose of Accelerated Testing
Design Life
Statistical Sample Size Determination
Tolerances in Accelerated Testing
Financial Considerations
Response from Finance
Response from Engineering
Response from Manufaturing
Summary
CHAPTER 2 Probability Fundamentals
Sampling
Probability Density Function
Cumulative Distribution Function
Reliability Function
Hazard Function
Expectation
Summary
CHAPTER 3 Distributions
Continuous Modeling Distributions
Weibull Distribution
Normal Distribution
Lognormal Distribution
Exponential Distribution
Discrete Modeling Distributions
Poisson Distribution
Binomial Distribution
Hypergeometric Distribution
Geometric Distribution
Identifying the Correct Discrete Distribution
Sampling Distributions
Chi-Square Distribution
t -Distribution
F -Distribution
Bayesβ Theorem
Summary
CHAPTER 4 Parameter Estimation
Maximum Likelihood Estimation
Probability Plotting
Hazard Plotting
Exponential Distribution
Maximum Likelihood Estimation
Hazard Plotting
Probability Plotting
Normal Distribution
Maximum Likelihood Estimation
Hazard Plotting
Probability Plotting
Lognormal Distribution
Weibull Distribution
Maximum Likelihood Estimation
Hazard Plotting
Probability Plotting
Nonparametric Confidence Intervals
Summary
CHAPTER 5 Accelerated Test Plans
Mean Time to Fail
Test Plan Problems
Zero-Failure Testing
Bogey Testing
Bayesian Testing
Effect of the Shape Parameter
Estimating the Shape Parameter
Determining Test Parameters
Guidelines for Zero-Failure Test Planning
Sequential Testing
Pass-Fail Testing
Exponential Distribution
Weibull Distribution
Randomization of Load Cycles
Reliability Growth
Reliability Growth Process
Reliability Growth Models
Duane Model
AMSAA Model
Summary
CHAPTER 6 Accelerated Testing Models
Linear Acceleration
Field Correlation
Arrhenius Model
Eyring Model
Voltage Models
Mechanical Crack Growth
Degradation Testing
Qualitative Tests
Step-Stress Testing
Elephant Tests
HALT and HASS
Summary
CHAPTER 7 Environmental
Stress Screening
Stress Screening Theory
Product Reliability Equation
What Is ESS?
Evolution of ESS
Misconceptions about ESS
Types of Environmental Stress
Temperature Cycling
Random Vibration
High-Temperature Burn-In
Electrical Stress
Thermal Shock
Sine Vibration, Fixed Frequency
Low-Temperature Screen
Sine Vibration, Swept Frequency
Combined Environment
Advantages of Temperature Cycling
Levels of Screen Complexity
Failure Analysis
Case Histories
Analogic Corporation
Bendix Corporation
Hewlett-Packard (HP)
Implementing an ESS Program
Equipment
Burn-In Optimization
Summary
CHAPTER 8 Test Equipment Methods and Applications
Simulation versus Stimulation
Simulation
Application
Typical Test Types
Defining the Real World
Stimulation
Application
Typical Test Types
Types of Stresses
Temperature
Steady State
Temperature Cycling
Thermal Shock
Vibration
Analysis Tools
Mechanical and Pneumatic
Loose Cargo Testing
Cyclic Testing
Electrodynamic
Hydraulic
Mechanical Shock
Electrical Stress
Combined Environments
Other Types of Stress
Summary
Appendix A: Statistical Tables
Appendix B: Government Documents
Appendix C: Glossary
Appendix D: List of Acronyms
Bibliography
About the Authors
Index