Reliability and Tolerance Analysis
Tolerance specification communicates the allowance for part variation. Variation happens, and when it is within what we expect, great.
Fundamentals of Success Testing
Update: 2025-07-09
Description
Fundamentals of Success Testing
podcast episode with speaker Fred Schenkelberg
Product life testing is expensive. Thus, many seek ways to minimize the cost. Two common methods is to use the fewest samples that may lead to a meaningful result, and using acceleration methods to shorten test times. Designing a test based on the pass/fail (binomial distribution) approach provides a path to using very few samples, providing a clear pass/fail result, and is relatively risky.
Let's examine the success testing approach, the assumptions, benefits and faults. Plus, what other options you may have available to get the information concerning expected product/component life. Knowing the details of success testing enables you to use it when it's appropriate and when to avoid its use.
This Accendo Reliability webinar was originally broadcast on 8 July 2025.
Related content:
What is Wrong With Success Testing? article
Determine Success Testing Sample Size article
Sample Size success testing article
Extended Bogey Testing article
Success Testing Formula Derivation article
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Early and often during product development, the team needs to know the expected and meaningful reliability prediction of the current design.
Reliability Integration into the Product Development Process
One of the challenges for reliability engineering in product development is reliability integration into the product development process.
Process Capability, Tolerance, and Reliability
How a focus on variability with process control, process capability and tolerances helps to improve reliability.
Fundamentals of Stress-Strength Analysis
How a focus on variability with process control, process capability and tolerances helps to improve reliability.
Fundamentals of Human Factors
If a person is not able to interact with your product, with or without the manual, they may consider your product a failure.
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