Author Archives: Reliability Solutions

Holistic Reliability – The Modern Day Solution

Holistic ‘is a belief that the parts of something are intimately interconnected and explicable only by reference to the whole’ The meaning of the term ‘Holistic’ is very appropriate in today’s complex Electronic and Electro Mechanical products as we cannot assume a one off Accelerated Life Test, a small sample HALT test or a suite of… Continue Reading

Why Reliability Prediction in Today’s World is too Complex to Only Rely on Standards for Test and Evaluation

Understanding what Reliability really is has become very important for manufacturers and designers. Too often, products go to manufacturing when the Reliability Team has missed something rather major. Reliability Prediction may be complex and it’s necessary for more than just evaluation and testing. The reliability engineers must know more about the product than anybody else,… Continue Reading

What Is Reliability?

In today’s complex product environment becoming more and more electronic, do the designers and manufacturers really understand what IS Reliability ?? It is NOT simply following standards to test in RD to focus only on Design Robustness as there is too much risk in prediction confidence, it only deals with the ‘intrinsic’ failure period and… Continue Reading

Reliability & The Coffin-Manson Model…

The Coffin-Manson model was originally developed to model thermally induced metal fatigue failures.  This of course has since been used to effectively model thermal induced stress failures in electronic packaged devices and complex electronic PCBA’s. It is well established that repeated Thermal Cycling stresses PCBA’s and enables quick stimulation of latent defects. The number of… Continue Reading

How do we improve our understanding of Reliability and Expected Failure Rate at the Design Stage of a new electronic product ?

Reliability Engineers are always expected to know everything about a product’s expected failure rate before any field data available. If failure rate turns out to be much higher than expected or required, the reliability engineers become the focus for attention and often are made the scapegoat. Other engineers and management simply assume a small sample… Continue Reading

Why do Reliability Engineers continually refer to very old military standards to set up Accelerated Life Testing ?

The application of Mil-Std-217 and other associated standards is now very outdated. These standards were developed for very old technology when failures were easy to ‘stimulate’ and simple high temperature testing was considered suitable as an Accelerated Life Test. Nowadays stimulating defects in complex consumer products is a significant challenge. HALT chamber makers will tell… Continue Reading

Why is Early Life Reliability more important than MTTF for consumer products ?

The Electronics Industry has grown so quickly over the last 10 years providing a challenge to the Reliability experts in defining the appropriate types of accelerated testing to induce inherent weaknesses in design and manufacture. The ‘Bathtub Curve’ is still accepted within the industry as a means of separating Early Life Reliability from Long Life… Continue Reading

Did you know you can IMPROVE Reliability by Measuring and Improving Design Maturity

One of most difficult things to do in Electronic Design is finding a method to evaluate Design Quality & Reliability with a simple KPI. There are many software packages to enable component count / stress measurement which act as an indicator towards failure level, but there is rarely any correlation. Reliability Solutions has designed a… Continue Reading

The importance of Early Life Reliability

Too many companies ignore the fact that most electronic products will have some form of Early Life failure rate which exceeds the expected average Intrinsic failure rate during the same period. They also do not realise that stimulating the early life defects require different types of stress testing as the defect mechanisms can be completely… Continue Reading

MOD Reliability Focus

MOD Reliability Improvement programmes are now a major part of the MOD Procurement Programme. The MOD Suppliers now have to realise improvements in their Reliability Assurance activities and are now faced with the need to develop Accelerated Test Solutions that will provide Statistically Relevant Failure Rate Predictions as opposed to paperwork Mil-Std Reliability assessments. Reliability… Continue Reading