Abdelkhalak El Hami - Reliability and Physics-of-Healthy in Mechatronics

The emergence of Covid-19 in March 2020 was a turning point throughout the industrial world This situation has highlighted some weaknesses in our industries, pushing the paradigm of development, competition and development time reduction.

More than ever, we have to be not only agile in our business but also without doubt to secure the usage of our products. It is very hard to combine variability and stability, acceleration and standardization. More than ever, the world is pushing all industries to the limit of reliability engineering.

Truth be told, reliability is a beautiful marketing word, which is used many times a day! But behind this word, there is a beautiful concept of pragmatic actions composed of analysis, investigations and talented people.

What kind of approach can designers, engineers and managers apply?

Whatever the business (aeronautic, space, defense, automotive, electronic consumer, etc.), how can we validate a design quickly and safely?

This book illustrates simply, but with many details, the state of the art of reliability science. The authors wish to expose clear reliability disciplines and applications through concrete examples from their industries and real life, based on industrial experience.

Many experts are convinced that reliability involves not only statistics but also multidisciplinary sciences, which combine materials, tests, simulations, quality tools, manufacturing, electronics, mechatronics, environmental engineering, Big Data science, etc.

That is why, in this innovative book, the reader will discover an incredible study on some concepts of a predictive reliability model of microelectronics from automotive, aeronautic and space missions based on entropy and Physics-of-Healthy (Chapters 1 and 2).

For a complex mechatronic system in aircraft, failure risks have to be identified in the early phase of the design.

In the automotive or aeronautic industries, the simulation of fatigue is used widely and efficiently. The problem is the variability of inputs such as fatigue parameters and life curves. The probabilistic fatigue and reliability simulation discussed in will be very interesting in this regard.

A large number of complex materials such as 3D printing, composites and thermoplastics are used to optimize the reliability performance of a system. However, the difficulty is usually linked to the lifetime currently being between 10 and 20 years. How can we assess reliability performance under temperature stress and represent a complete mission profile? Of course, Arrhenius is a frequently used model; however, it can also be erroneous due to the variability in the energy of activation. Therefore, a new mode probabilistic model is put forward in .

Yes, there is a before and after Covid-19. But the challenge of reliability in our industry is more than ever a burning topic. We hope that readers will find some tips that can efficiently help all designers to make strong decisions.

The authors would like to dedicate this book to all the people who have lost their loved ones during the Covid-19 pandemic around the world.

Abdelkhalak EL HAMI
David DELAUX
Henri GRZESKOWIAK
July 2022