08/10/2025
Struggling to set reliability and confidence targets and then back them up with real test data? 🎯
I just released a clear, practical walkthrough for working engineers. In this video, I show how to choose the right reliability and confidence levels, translate mission requirements into test requirements, and calculate sample sizes using the parametric binomial reliability demonstration method.
What you’ll learn
Reliability vs. confidence in plain language
How to set targets from customer needs, safety risk, cost of failure, and competitive benchmarks
Converting mission reliability to a test target, including time scaling with a Weibull shape parameter
Parametric binomial basics for zero failures and for allowing failures
Step-by-step sample size calculations and how test time changes the math
Tradeoffs among sample count, test duration, and acceleration factor
Common mistakes to avoid when claiming a pass at a given confidence level
Who this is for
Reliability, design, validation, and quality engineers; test leads; and hardware managers who need defensible results for gate reviews and customer discussions.
Free resources + contact
Grab my reliability checklists and sample size quick sheet at the link in the video description. Need expert help with your validation plan or a second set of eyes on your numbers? Reach out: www.tomresh.com
Watch the video → https://youtu.be/30VlCqpMdHI
If it helps, give it a like, subscribe for more real-world reliability content, and drop a comment with the target and confidence you’re trying to demonstrate. 📊
Resh Tech - Reliability Test and Validation Training and Consulting - Advancing Reliability, Testing, and Validation for a Stronger Future. Resh Tech is a leading engineering consulting firm specializing in vibration and shock testing, battery validation, reliability engineering, and product durability testing for industries including automotive, aerospace, military, and EV battery safety. Our expert services include DFMEA development,....