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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  • Field Failure: A Quality or Reliability Problem
    Field Failure: A Quality or Reliability Problem When my car fails to start, as a customer I only know that my car didn’t start. When my phone fails to turn on, or the dishwasher leaks, or the printer …
  • How Does One Change an Industry
    How Does One Change an Industry Jobs at Apple has done it. You can, too. Change an industry. The advent of iTunes and iPods forever changed how the world buys and listens to music. While Jobs had the …
  • Reliability is Not Metrics, It’s Decision Making
    Reliability is Not Metrics, It’s Decision Making MTBF, KPIs, yield, return rate, warranty… bah! We may use one or more of these when establishing product reliability goals. When tracking performance. …
  • 5 Ways Your Reliability Metrics and Fooling You
    5 Ways Your Reliability Metrics and Fooling You We measure results. We measure profit, shipments, and reliability. The measures or metrics help us determine if we’re meeting out goals if something bad …
  • The Variety of Statistical Tools
    The Variety of Statistical Tools to Support Your Decision Making My wife and I moved to a new home last year. We have yet to organize our tools. The bedroom and kitchen are now organized. We, for the …
  • The Rule of 3 Significant Digits
    Two people have shaped how I guess an answer. Their comments and guidance have tailored how to form a quick estimate, my ability to articulate a hunch and the effectiveness of those guesses. You proba …
  • Teaching Reliability is Part of Your Role
    Teaching Reliability is Part of Your Role Nearly everyone I’ve ever met doesn’t like their toaster to fail. It will, and that is a bummer, as the quick and easy way to warm up the morning toast will b …
  • Math, Statistics, and Engineering
    Math, Statistics, and Engineering In college, Mechanics was a required class from the civil engineering department. This included differential equation. Luckily for me, I also enjoyed a required cours …
  • The Dirge of the MTBF Bias
    The Dirge of the MTBF Bias We use our biases every day to make choices. We select the beige sweater because we have a color bias concerning our sweaters. Many of our biases help us quickly make decisi …
  • Book Review: An Elementary Guide to Reliability
    Book Review: An Elementary Guide to Reliability If you sort your Amazon search on ‘reliability engineering’ by price: low to high, you may find some interesting titles available for free or maybe a fe …
  • When Do Failures Count?
    When Do Failures Count? One technique to calculate a product’s MTBF is to count the number of failures and divide into the tally of operating time. You already know, kind reader, that using MTBF has i …
  • Sample Size and Duration and MTBF
    Sample Size and Duration and MTBF If you have been a reliability engineer for a week or more, or worked with a reliability engineer for a day or more, someone asked about testing planning. The convers …
  • Learn to Notice MTBF Everyday
    Learn to Notice MTBF Everyday Did you notice the speed limit signs in your neighborhood today? If like me, you went about your commute or regular travels relatively blind. You watched for the neighbor …
  • The 3 Best Reasons to Use MTBF
    The 3 Best Reasons to Use MTBF This may seem an odd article for the NoMTBF site. Stay with me for a moment longer. Over the years of speaking out on the perils of MTBF, there has been some push back. …
  • Illuminating MTBF’s Lack of Information
    Illuminating MTBF’s Lack of Information Here’s a simple illustration of how MTBF oversimplifies data concealing essential information. By convention, we tend to use MTBF for repairable data. That is f …
If you’d like to learn more about MTBF and how to improve your reliability metrics, let’s talk.