DfR Solutions Reliability Designed and Delivered

The Roles of Reliability and Safety in AV Development

Posted by DfR Solutions on Aug 21, 2018 2:58:42 PM

Since the first pedestrian fatality due to an autonomous vehicle in March 2018, there’s been no shortage of discussion and debate over the future of autonomous vehicles and AV testing. 

However, as Dr. Craig Hillman discusses in this month’s issue of SAE’s Autonomous Vehicle Engineering, there’s a critical piece missing from that conversation: the interconnected roles of reliability and safety. In many companies, there tends to be a disconnect between the two departments. And because authority and responsibility (i.e., who does what and who reports to whom) can have such a dramatic impact on hardware and software design cycles, keeping these two departments in silos can have negative effects.

Topics: AV Development

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Are Lithium-Ion Battery Explosions Increasing?

Posted by Vidyu Challa on Jun 6, 2018 8:47:00 AM

It seems like a month does not go by, without hearing news reports about battery explosions in e-cigs, headphones, smartphones or other electronic gadgets. Granted that stories about explosions are considered newsworthy, but has the statistical rate of battery failures actually gone up in the last few years? Has the impact of battery failures increased and if so, why? And, I am of course talking about Lithium ion batteries, the go-to battery chemistry in rechargeable electronic devices owing to their high energy density. I am certain you do not want to be carrying around a brick for a smartphone.

Topics: Lithium Ion Battery, Battery Reliability, Battery Safety, Battery Failure

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Are Lithium-Ion Cells You Buy Online Always Legit?

Posted by Vidyu Challa on May 31, 2018 11:45:00 AM

In recent years the practice of buying spare e-cigarette batteries online has started to increase, with some users scouting for higher amp-hour/power batteries in order to get a better vaping experience. This is particularly true for mechanical mod e-cigs, which are highly customizable and do not use protection circuitry. The battery protection circuit is what keeps a lithium-ion battery within its operating window, and prevents it from overheating, overcharge and other potentially dangerous situations.

Topics: Lithium Ion Battery, Battery Reliability, Battery Safety, Battery Failure

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Why Do Lithium-Ion Batteries Swell?

Posted by Vidyu Challa on May 24, 2018 2:22:00 PM

My cousin recently came to me with a battery problem. He got a drone for Christmas, and he had not unboxed it for a while. Last Christmas, right? I asked. Apparently, it was the Christmas before (i.e a year and a half of being in a box). Uh-oh, I go. I almost knew what was coming.  The drone obviously did not work, and I got to see a picture of a very bloated Lithium Ion pouch cell.  

Your LiPo battery does need some attention from you every few months in the form of a periodic recharge, or you will end up with a cell that looks like this. My colleagues have brought me plenty of gadgets with the plastic case popped open from a bloated battery.

Topics: Lithium Ion Battery, Battery Reliability, Battery Safety, Battery Failure

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Physics of Failure is Dead!

Posted by Ed Dodd on Mar 29, 2018 1:08:00 PM

The first day of the Design for Reliability Conference in Baltimore, MD heralded the death of Physics of Failure (PoF). Craig Hillman, CEO of DfR Solutions made the announcement early in his welcome and introductions, explaining that as products get more complex, and reliability impacts on business become more serious, it is becoming ever more critical to have upper management participation. When the rest of engineering is busy pursuing “engineer for success”, PoF can ring negatively in the ears of management with its apparent focus on failure.

Topics: Reliability Physics, Physics of Failure

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4 Reasons to Join Us for the 2018 Design for Reliability Conference

Posted by DfR Solutions on Feb 28, 2018 12:21:00 PM

Not sure if you should attend the 2018 Design for Reliability Conference, March 19-21 in Baltimore?  Well, here are 4 great reasons not to miss it this year!

Topics: 2018 Design for Reliability Conference, Reliability Physics, Physics of Failure

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3 Real Life Examples Of “After A Failure” Investigations

Posted by Robert Manzanares on Feb 14, 2018 11:11:00 AM

“After a failure” investigations are typically performed to identify root cause of failure, calculate risk exposure and develop mitigation and remediation solutions. Just like with “before a failure” investigation, there are two specific test methods that could be applied to either of the two categories – non-destructive physical analysis (NPA) and destructive physical analysis (DPA).

Topics: Reliability Physics, reliability testing, Failure Analysis

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Top 5 Reasons for Solder Joint Failure

Posted by Tyler Ferris on Feb 7, 2018 11:41:00 AM

Solder joint reliability is often a pain point in the design of an electronic system. A wide variety of factors affect solder joint reliability, and any one of them can drastically affect joint lifetime in a negative way. Properly identifying and mitigating potential causes of solder joint failure during the design and manufacturing process can prevent costly and difficult to solve problems later in a product lifecycle. Some of the most commonly observed solder joint failure contributors to consider are described here.

Topics: solder fatigue, solder joint reliability

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Exploring Semiconductor Reliability

Posted by Craig Hillman on Jan 31, 2018 1:11:00 PM

A common feeling among many designers and users of military electronic systems is nostalgia.  Nostalgia for the good old days when the electronics industry was almost the exclusive supply chain of the military. While almost all aspects of integrated circuits (ICs) have improved over the past few decades (better, faster, cheaper), many in the military still long for the day when almost every semiconductor device on the market met or exceed their requirements without even asking.

Topics: Semiconductor technology, integrated circuits

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DfR Solutions is the Healthcare Provider for the Electronics Industry - Say What?

Posted by Greg Caswell and Ed Dodd on Jan 24, 2018 11:24:00 AM

Recently I, Greg Caswell, had full knee replacement surgery on my left knee to fix a problem with osteoarthritis.  I found the overall experience interesting in that the approach the doctor’s used to assess the issue, develop a plan for improving the joints capabilities and finally performing surgery as the last possibility, was similar to the Physics of Failure approach DfR Solutions uses.  

Topics: electronics failure, Electronics Reliability, reliability testing

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