This book provides methods and concepts which enable engineers to design mass and cost efficient products. Therefore, the book introduces background and motivation related to sustainability and lightweight design by looking into those aspects from a durability and quality point of view. Hence this book gives a "top-down" approach: What does an engineer has to do for providing a mass and cost efficient solution? A central part of that approach is the "stress-strength interference model" and how to deal with "stresses" (caused by operational loads) as well as with the "strength" of components (provided by material, design and manufacturing process). The basic concepts of material fatigue are introduced, but the focus of the volume is to develop an understanding of the content and sequence of engineering tasks to be performed which help to build reliable products. This book is therefore aimed specifically at students of mechanical engineering and mechatronics and at engineers in professional practice.

Autorentext

Ruediger Heim is a mechanical engineer who has been involved in road vehicle product development and research since 1992. He graduated from Technical University Darmstadt, having his focus on material science and automotive engineering. Before he joined Fraunhofer LBF, he was working many years for an engineering service supplier at sites in Cologne, Stuttgart and Ruesselsheim, supporting automotive body engineering programs. The attributes he was working on, were primarily crashworthiness and structural durability.

Beyond traditional approaches for body engineering, he was introducing novel solutions such as rigid polyurethane foam to stiffen relevant cavities of the body structure. In 2005 he joined Europe's largest organization for applied research: the Fraunhofer-Gesellschaft. At the Fraunhofer-Institute for Structural Durability and System Reliability in Darmstadt he is now in charge of an R&D division as well as he is deputy director of the institute since 2014. Parallel to his focus on structural durability, he is strongly involved in R&D activities related to low & zero emission vehicles. At the University for applied Science in Kaiserslautern he is giving a lecture in structural durability for an international master´s study program.

Inhalt

Introduction & Motivation | Durability management.- Load time histories and counting methods.- Load and stress spectra S/N curves and their characterization.- Damage accumulation and fatigue life assessment.- Fatigue strength of materials and components.- Improving fatigue strength.- Accelerated life testing and math modeling.