Category Archives: Reliability@Risk™ – Fred Schenkelberg

#176 – TEMPERATURE AND HUMIDITY ACCELERATED LIFE TESTING – FRED SCHENKELBERG

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ABC FredHigh temperature & humidity is a common test condition. For specific failure mechanisms there are models available (or you can create a model) to determine the translation from test to use conditions.

These acceleration models generally only apply to one specific failure mechanisms and do not apply to a system level estimate of life. If the failure mechanism is the dominate failure mechanism for the product, then an ALT exploring just that mechanisms would provide a life estimate. Continue reading →

#174 – TIME COMPRESSION ACCELERATED LIFE TESTING – FRED SCHENKELBERG

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ABC FredThe easiest ALT is one that you operate an item more often then operated by the customer. Removing spans of time the item is not being bent, moved, heated, etc allows you to use time compression.

For example, a home kitchen toaster may be used for a few cycles during breakfast time in your home. In the lab, we can avoid having to wait the day of idle time and just make toast more often than just at breakfast to accelerate the operation of a toaster. Continue reading →

#172 – INTRODUCTION TO THE QUALITY TRIANGLE – FRED SCHENKELBERG

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ABC FredHave you ever worked on a project with no deadlines, unlimited resources, and boundless scope? Probably not.

You may have worked under the guidelines of a quality triangle, also known as a project management triangle, iron triangle, or project triangle.

Why is that? Why the limits to our ability to create a product or improve a system? Continue reading →

#171 – YOU ARE A RELIABILITY LEADER – NOW MAKE A DIFFERENCE – FRED SCHENKELBERG

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ABC FredLeadership is not a position or title within an organization. It is an attitude.

You’ve seen the internet meme’s about the difference between leadership and management. There is a difference and while not everyone is going to be in top management, everyone can (and should) be a leader.

As a reliability professional, you are conveniently looked to for leadership. You are expected to use your knowledge and skill to solve problems. To help teams solve problems. To improve the reliability performance of your system and across your industry. Continue reading →

#170 – THE NEED TO IMPROVE THE RELIABILITY NARRATIVE – FRED SCHENKELBERG

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ABC FredLittle Compromises and Future Costs

In a recent Seth Godin blog, Counting beans he talks about the eventual costs of little compromises. The immediate benefit may be celebration worthy, yet

But overlooked are the unknown costs over time, the erosion in brand, the loss in quality, the subtraction from something that took years to add up.

This certainly applies to reliability as well. Deferring maintenance just one more month, addressing one more software bug can be done after shipping, and similar small shifts erode reliability of your system. Continue reading →