Surface Integrity Of Machined Structural Components

A program has been run to evaluate the effects of different metal removal methods and variations of these methods on surface integrity. Three alloys were studied: beta rolled Ti-6Al-4V; AISI 4340, quenched and tempered, 50 Rc; and Inconel 718, solution treated and aged. Various grinding procedures caused the titanium alloy to exhibit a fatigue strength range of 13 to 62 ksi. The fatigue strength of 4340 due to grinding variables ranged from 62 to 102 ksi, while Inconel 718 showed a range of 24 to 60 ksi. Abusive grinding conditions always resulted in fatigue strengths at the minimum of these ranges. Milling variables exhibited a fatigue strength range of 32 to 72 ksi in the beta rolled titanium alloy. EDM and ECM on Inconel 718 yielded 22 and 39 ksi, respectively, compared to 60 ksi for gentle grinding. Guidelines for processing aerospace hardware considering surface integrity requirements are presented in the report.

"Surface Integrity in Machining" describes the fundamentals and recent advances in the study of surface integrity in machining processes. "Surface Integrity in Machining" gathers together research from international experts in the field. Topics covered include: the definition of surface integrity and its importance in functional performance; surface topography characterization and evaluation; microstructure modification and the mechanical properties of subsurface layers; residual stresses; surface integrity characterization methods; and surface integrity aspects in machining processes. A useful reference for researchers in tribology and materials, mechanical and materials engineers, and machining professionals, "Surface Integrity in Machining" can be also used as a textbook by advanced undergraduate and postgraduate students.

Offering complete coverage of the technologies, machine tools, and operations of a wide range of machining processes, Machining Technology presents the essential principles of machining and then examines traditional and nontraditional machining methods. Available for the first time in one easy-to-use resource, the book elucidates the fundame

This two-volume set addresses both current and developing topics of advanced machining technologies and machine tools used in industry. The treatments are aimed at motiving and challenging the reader to explore viable solutions to a variety of questions regarding product design and optimum selection of machining operations for a given task. This two-volume set will be useful to professionals, students, and companies in the areas of mechanical, industrial, manufacturing, materials, and production engineering fields. Traditional Machining Technology covers the technologies, machine tools, and operations of traditional machining processes. These include the general-purpose machine tools used for turning, drilling, and reaming, shaping and planing, milling, grinding and finishing operations. Thread and gear cutting, and broaching processes are included along with semi-automatic, automatic, NC and CNC machine tools, operations, tooling, mechanisms, accessories, jigs and fixtures, and machine tool dynamometry are discussed. Non-Traditional and Advanced Machining Technologies covers the technologies, machine tools, and operations of non-traditional mechanical, chemical and thermal machining processes. Assisted machining technologies, machining of difficult-to-cut materials, design for machining, accuracy and surface integrity of machined parts, environment-friendly machine tools and operations, and hexapods are also presented. The topics covered throughout this volume reflect the rapid and significant advances that have occurred in various areas in machining technologies.

The subject of this book is surface metrology, in particular two major aspects: surface texture and roundness. It has taken a long time for manufacturing engineers and designers to realise the usefulness of these features in quality of conformance and quality of design. Unfortunately this awareness has come at a time when engineers versed in the use and specification of surfaces are at a premium. Traditionally surface metrology usage has been dictated by engineers who have served long and demanding apprenticeships, usually in parallel with studies leading to technician-level qualifications. Such people understood the processes and the achievable accuracies of machine tools, thereby enabling them to match production capability with design requirements. This synergy, has been made possible by the understanding of adherence to careful metrological procedures and a detailed knowledge of surface measuring instruments and their operation, in addition to wider inspection room techniques. With the demise in the UK of polytechnics and technical colleges, this source of skilled technicians has all but dried up. The shortfall has been made up of semi skilled craftsmen, or inexperienced graduates who cannot be expected to satisfy tradition al or new technology needs. Miniaturisation, for example, has had a pro found effect. Engineering parts are now routinely being made with nanometre surface texture and fiatness. At these molecular and atomic scales, the engineer has to be a physicist.

Non-Traditional and Advanced Machining Technologies covers the technologies, machine tools, and operations of non-traditional machining processes and assisted machining technologies. Two separate chapters deal with the machining techniques of difficult-to-cut materials, such as stainless, super alloys, ceramics, and composites. Design for machining, accuracy and surface integrity of machined parts, environment-friendly machine tools and operations, and hexapods are also presented. The topics covered throughout reflect the rapid and significant advances that have occurred in various areas in machining technologies and are organized and described in such a manner to draw the interest of the reader. The treatments are aimed at motiving and challenging the reader to explore viable solutions to a variety of questions regarding product design and optimum selection of machining operations for a given task. The book will be useful to professionals, students, and companies in the areas of industrial, manufacturing, mechanical, materials, and production engineering fields.

Metal cutting is a science and technology of great interest for several important industries, such as automotive, aeronautics, aerospace, moulds and dies, biomedicine, etc. Metal cutting is a manufacturing process in which parts are shaped by removal of unwanted material. The interest for this topic increased over the last twenty years, with rapid advances in materials science, automation and control, and computers technology. The present volume aims to provide research developments in metal cutting for modern industry. This volume can be used by students, academics, researchers, and engineering professionals in mechanical, manufacturing, and materials industries. THE SERIES: ADVANCED MECHANICAL ENGINEERING Currently, it is possible to defi ne mechanical engineering as the branch of engineering that “involves the application of principles of physics and engineering for the design, manufacturing, automation and maintenance of mechanical systems”. Mechanical Engineering is closely related to a number of other engineering disciplines. This series fosters information exchange and discussion on all aspects of mechanical engineering with a special emphasis on research and development from a number of perspectives including (but not limited to) materials and manufacturing processes, machining and machine tools, tribology and surface engineering, structural mechanics, applied and computational mechanics, mechanical design, mechatronics and robotics, fluid mechanics and heat transfer, renewable energies, biomechanics, nanoengineering and nanomechanics. In addition, the series covers the full range of sustainability aspects related with mechanical engineering. Advanced Mechanical Engineering is an essential reference for students, academics, researchers, materials, mechanical and manufacturing engineers and professionals in mechanical engineering.