- by Loren Stewart, CFSE
- Tuesday, January 28, 2020
- Functional Safety
Back to Basics 21 – The B10 Method
The B10 method uses cycle test data to predict failure rates.
A cycle test is done on a set of products (>20) until 10% of the units under test fail. The number of cycles until failure is called the B10 point.
The B10 number of cycles is converted to a…
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- by Loren Stewart, CFSE
- Tuesday, February 04, 2020
- Functional Safety
Back to Basics 22 – Cycle Testing
A cycle test is done on a set of products (>20) until 10% of the units under test fail.
The number of cycles is converted to a time period by knowing the cycles per hour in any particular application.
A failure rate is calculated by dividing the 10% failure…
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- by Loren Stewart, CFSE
- Wednesday, March 12, 2014
- Certification
Cycle Testing for Static Applications? NO!
The failure rates of certain mechanical components used in solenoid valves, actuators, and valves vary substantially depending on operation. Seals such as O-rings, for example have fundamentally different failure modes when used in applications with frequent movement (dynamic) versus applications with infrequent movement (static).
Static is generally…
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