No MTBF Blog

A site devoted to the eradication of MTBF. The following excepts are recent posts of the

NoMTBF blog. Click through or visit nomtbf.com to learn more about the perils and what you can do instead of using MTBF.

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  • MTBF Use May Reduce Product Reliability
    Is MTBF Preventing Your Product From Being Reliable? MTBF is not reliability. Attaining a specific MTBF does not mean your product is reliable. MTBF use may be the culprit. Therefore, working to achie …
  • How Did Reliabilty Become Confused with MTBF?
    When Asking for Reliability Information Do You Ask for MTBF? Our customers, suppliers, and peers seem to confuse reliability information with MTBF. Why is that? Is it a convenient shorthand? Maybe I’m …
  • The Business of Providing MTBF
    What Price Providing MTBF? If your livelihood consists of providing MTBF upon request, what good is your service? Sure you earn some money, yet did the customer receive value in the transaction? As yo …
  • A Couple of Questions for You Concerning MTBF
    Let me ask you something concerning MTBF Do make compromises around gathering and analyzing data since you only need to report MTBF? Do you use MTBF (exponential distribution) based test planning when …
  • How to Judge a Reliability Book
    How Do You Judge a Reliability Book? By it’s cover no doubt. The title and cover are important, this is true. When you judge a reliability book we often first see and evaluate the cover. The author? D …
  • Should One Profit From Failures?
    Should One Profit From Failures? “Do not improve reliability as it cuts into our repair activity profits.” Is this a way to run a reliability program? I’ve seen this in action and that company is no l …
  • Book Review: Accelerated Testing
    Accelerated Testing: Statistical Models, Test Plans, and Data Analyses by Wayne Nelson Published by John Wiley & Sons in 1990 this 601 page book started my career in reliability engineering. I did …
  • High MTBF with Low Reliability
    Can You Have a High MTBF and Low Reliability? As regular readers know, MTBF by itself is misleading. When representing actual data it can be deceptive as well. Just because you have a high MTBF value …
  • A Life Data Analysis Challenge
    Here is a Challenge: Life Data Analysis Some years ago a few colleagues compared notes on results of a Weibull analysis. Interesting we all started with the same data and got different results. After …
  • 10 Reasons to Avoid MTBF
    “Why do you avoid MTBF?” I got this question the other day. The person knew about the NoMTBF campaign. They didn’t quite understand why it was a big deal, especially for me, to avoid MTBF. The tiff be …
  • The Many Ways of Data Analysis
    Given Some Data, Do Data Analysis Let’s say we have a set of numbers, {2.3, 4.2, 7.1, 7.6, 8.2, 8.4, 8.7, 8.9, 9.0, 9.1} and that is all we have at the moment. How many ways could you analyze this set …
  • REVIEW Analyzing Repairable System Failures Data
    REVIEW: Analyzing Repairable System Failures Data Recently, Ziad let me know he published an article titled Analyzing Repairable System Failures Data in the April-May 2017 issue of Uptime magazine (su …
  • We’ll Meet Your Reliability But Not Your Spec
    A Problem With MTBF (Physics gets in the way!) A Guest Post by Kevin Walker I had an interesting case study a couple weeks ago, where “I’m giving you what you want, not what you asked for “ when the r …
  • The Challenges in Reliability Engineering
    What are the Other Challenges in Reliability Creating a product or system that lasts as long as expected, or longer, is a challenge. It’s a common challenge that reliability engineering and entire eng …
  • The MTBF Estimation Wizard
    Get Your MTBF Estimation Here MTBF is a magic method for predicting time to failure for your new design. On this page we present to you the fastest way to achieving MTBF. Maybe The Best Function ever! …
If you’d like to learn more about MTBF and how to improve your reliability metrics, let’s talk.