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on Product Reliability

A listing in reverse chronological order of articles by:



  • Kirk Grey — Accelerated Reliability series

  • Les Warrington — Achieving the Benefits of Reliability series

  • Adam Bahret — Apex Ridge series

  • Michael Pfeifer — Metals Engineering and Product Reliability series

  • Fred Schenkelberg — Musings on Reliability and Maintenance series

  • Arthur Hart — Reliability Engineering Insights series

  • Chris Jackson — Reliability in Emerging Technology series

by Fred Schenkelberg Leave a Comment

Data Analysis and Questions to Answer

Data Analysis and Questions to Answer

One of my standing searches revealed an article that has shows a nice example of reliability data analysis. The author analyzed the time-to-violent-death of Roman emperors. The article is interesting in a historical sense plus illustrates a few key points for any life data analysis.

The article, “Statistical reliability analysis for the most dangerous occupation: Roman Emperor” by Joseph Homer Saleh takes a look at the 69 Roman emperors and 62% of them that suffered a violent death. The idea of the study was to determine if there is some pattern to the deaths and if the analysis would reveal any insights for those studying the era of the Roman emperors. [Read more…]

Filed Under: Articles, Musings on Reliability and Maintenance Topics, on Product Reliability

by Adam Bahret 1 Comment

Switzerland Style Attention

Switzerland Style Attention

I’m just back from a week long trip to Switzerland.  I was there developing a new Failure Mode Effects Analysis (FMEA) course for the “R is 4 Reliability” education series.  If you have ever been to Switzerland you found that there are several things that are striking about this place.  The natural beauty is unparalleled. Just about every view from every angle is of a beautiful snow capped mountain that has a lake or stream connected at its base. It’s never got old to look up and be viewing a real life postcard.

[Read more…]

Filed Under: Apex Ridge, Articles, on Product Reliability

by Adam Bahret Leave a Comment

Second Session of HALT Seminar

Second Session of HALT Seminar

Second Session!!!

“The Perfect Reliability Program Plan”

We held the New England HALT Seminar this past week.  It’s a little fun thing we like to put on every so often here in Boston. We do a few sessions where we talk about Reliability topics, we then play around with the HALT chambers and break a few things. It was great having sponsorship from Espec/Qualmark, and Air Liquide this year.  In past years it has just been me doing a few 30 minute sessions (one man show).  But this year we had four speakers and a diverse set of topics.  Definitely our best one yet.  This may grow to where we can’t do it at the lab any longer. Hopefully not, I don’t want to try and bring a HALT chamber to a conference center.

[Read more…]

Filed Under: Apex Ridge, Articles, on Product Reliability

by Fred Schenkelberg 1 Comment

How Much Reliability Data Is Enough?

How Much Reliability Data Is Enough?

Some may argue that just enough reliability data is just the right amount. Too much may lead to confusion, too little doesn’t inform well. The reliability work we do helps others make decisions, and recent work in how humans make decisions may help us prepare and present our results effectively.

If preparing reliability data-based recommendations, consider using less information. Ed O’Brien and Nadav Klein have found decision-makers tend to use much less data or information to make a decision than they think they will need.

If using data and the derived information to make a decision consider the situation carefully to know when to use a structured decision-making approach or to simply go with your gut. Daniel Kahneman and Gary Klein provide some insights and basic guidelines for decision making. [Read more…]

Filed Under: Articles, Musings on Reliability and Maintenance Topics, on Product Reliability

by Adam Bahret Leave a Comment

New England HALT Seminar

New England HALT Seminar

We held the New England HALT Seminar this past week.  It’s a little fun thing we like to put on every so often here in Boston. We do a few sessions where we talk about Reliability topics, we then play around with the HALT chambers and break a few things. It was great having sponsorship from Espec/Qualmark, and Air Liquide this year.  In past years it has just been me doing a few 30 minute sessions (one man show).  But this year we had four speakers and a diverse set of topics.  Definitely our best one yet.  This may grow to where we can’t do it at the lab any longer. Hopefully not, I don’t want to try and bring a HALT chamber to a conference center.

[Read more…]

Filed Under: Apex Ridge, Articles, on Product Reliability

by Fred Schenkelberg Leave a Comment

5 Ways to Keep Your Audience’s Attention

5 Ways to Keep Your Audience’s Attention

I have found the best way to lose an audience is to focus on statistical derivation. While this is a fascinating subject for me, it just doesn’t seem to hold an audience’s attention.

Having something interesting and useful to say is key to maintaining an audience’s attention, yet at times how we present helps them become distracted.

So, given great content or proposal, how can you help your audience not quickly check their phone, yet again? [Read more…]

Filed Under: Articles, Musings on Reliability and Maintenance Topics, on Product Reliability

by Adam Bahret Leave a Comment

Reliability of the Little Things, and a Good Fight

Reliability of the Little Things, and a Good Fight

My wife (Beth) and I both train and compete in Brazilian Jiu Jitsu.  It’s a grappling sport like wrestling.  In Jiu Jitsu your Gi (the karate looking uniform) is a big part of the sport.  It’s a very heavy fabric with very specific features that are inspected before each match.  Many moves involve the GI, especially the jacket. I have wrapped my sleeve around someones neck for a choke, You can grab the end of both of the opponents sleeves and dig your feed into their elbows to lock up their arms and throw them, you can use an opponent’s own lapel and wrap it around their neck for a submission or simply to roll them any way you wish.

[Read more…]

Filed Under: Apex Ridge, Articles, on Product Reliability

by Adam Bahret Leave a Comment

The Porsche Adventure Continues

The Porsche Adventure Continues

It’s been a few years since I have had a Porsche 911 in the stable. It seemed like the right time since were down to only two sports cars in addition to the daily drivers.  I think five cars is the bare minimum these days.  “It’s only a problem if you want to stop but can’t.”  I don’t want to.  There are some less free spirited individuals in the house who have expressed differing opinions.

[Read more…]

Filed Under: Apex Ridge, Articles, on Product Reliability

by Adam Bahret Leave a Comment

My Personal Indiana Jones

My Personal Indiana Jones

I was recently in New York City for work.  I stopped by to see a friend in the area.  He said “I have something interesting to show you.”  I was pretty excited because when Mark says “I have something interesting to show you.” you know it is going to be good.  He’s a writer and his passion is finding strange and interesting things.  My personal Indiana Jones.  Many days he wakes up and just gives himself some adventure assignment and the goes searching for it.

[Read more…]

Filed Under: Apex Ridge, Articles, on Product Reliability

by Les Warrington Leave a Comment

Dual-Ring Network Reliability

Dual-Ring Network Reliability

In the article Calculating Network Reliability the lack of published analytical solution for dual-ring network reliability was highlighted.  This article provides a neat solution and further challenges readers to offer their proof or prior publication reference.  The solution and the author’s general proof will be presented at RAMS 2020.

[Read more…]

Filed Under: Achieving the Benefits of Reliability, Articles, on Product Reliability Tagged With: network reliability, network topology, Redundancy, system reliability

by Adam Bahret Leave a Comment

Passion to Optimize

Passion to Optimize

If you recall I went on a slightly crazy adventure up to the edge of the article circle with my adventure buddy, my daughter Natalie, 11.  We almost froze to death on a mountain just to see the Northern Lights (story here).  But we also did something we both have always wanted to do and knew would be epic, a dog sled ride.  The first thing I have to say about it is holy crap those dogs are fast.  It felt like you could blow the doors off a snowmobile if you came across one.

[Read more…]

Filed Under: Apex Ridge, Articles, on Product Reliability

by Adam Bahret Leave a Comment

Doing Nothing is Stressful

Doing Nothing is Stressful

I was recently giving a presentation for IEEE at MIT Lincoln Labs here in the Boston area.  The topic was one of my favorites, my new playground, Use Case 7 !  The crowd loved the idea of expanding how we access use cases and came up with great examples. and experiences, of their own.  They found many areas in their work where the Use Case 7 exercise may yield some interesting insight.

[Read more…]

Filed Under: Apex Ridge, Articles, on Product Reliability

by Les Warrington 5 Comments

Calculating Network Reliability

Calculating Network Reliability

I have worked in the field of reliability for a good many years.  I have presented both beginner and advanced reliability engineering courses. I have even read several books. 🙂 But, across all this, component redundancy has never been explained beyond simple serial and parallel configurations.

So, it was a shock to my system to be presented with a scenario that couldn’t be solved using a simple parallel system.

My previous work had challenged me only as far as:

  • Serial
  • Active parallel
  • Stand-by parallel
  • M-out-of-n parallel
  • Keystone-component parallel

But now I was being challenged by a network that was none of these.

[Read more…]

Filed Under: Achieving the Benefits of Reliability, Articles, on Product Reliability Tagged With: network reliability, network topology, Redundancy, system reliability

by Fred Schenkelberg Leave a Comment

The Importance of a Reliability Engineering Community

The Importance of a Reliability Engineering Community

Years ago I was a part of a reliability engineering community and I had not met more than two or three members. This was before the internet and was using a new-fangled system called an email list.

At the time, it filled the role of helping me understand the many facets of reliability engineering. It helped me answer questions and allowed me to help others as well.

My desire is to help create more such communities that can help you and your organization improve the discussion concerning reliability. Let’s explore exactly how to make this work. [Read more…]

Filed Under: Articles, Musings on Reliability and Maintenance Topics, on Product Reliability

by Fred Schenkelberg Leave a Comment

What Should I Learn as a Reliability Engineer?

What Should I Learn as a Reliability Engineer?

Ran across this question the other day from someone just starting in the role of reliability engineer. I wasn’t smart enough to ask this question when I started in the field, yet looking back I’m sure to have found the list of what one should learn and apply daunting. [Read more…]

Filed Under: Articles, Musings on Reliability and Maintenance Topics, on Product Reliability

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