Condition-Based Maintenance in Aviation: The History, The Business and The Technology describes the history and practice of Condition-Based Maintenance (CBM) systems by showcasing ten technical papers from the archives of SAE International, stretching from the dawn of the jet age down to the present times. By scientifically understanding how different components degrade during operations, it is possible to schedule inspections, repairs, and overhauls at appropriate intervals so that any incipient failure can be detected well in advance. Today, this includes more sensors and analytics so that periodic inspections are replaced by automated "continuous" inspections, and analytical methods that detect imminent failures and predict degradation issues more economically and efficiently. Similar concepts are also being developed for delivering prognostics functions, such as tracking of remaining useful life (RUL) of life-limited parts in aircraft engines.
The Use of Electric Batteries for Civil Aircraft Applications is a comprehensive and focused collection of SAE International technical papers, covering both the past and the present of the efforts to develop batteries that can be specifically installed in commercial aircraft. Recently, major commercial aircraft manufacturers started investigating the possibility of using Li-Ion batteries at roughly the same time that the military launched their first applications. As industry events unfolded, the FAA and committees from RTCA and SAE continued efforts to create meaningful standards for the design, testing, and certification of Li-Ion battery systems for commercial aviation. The first document issued was RTCA DO-311 on Mar. 13, 2008. As the industry continues to develop concepts and designs for the safe utilization of the new Li-Ion battery systems, many are already working on designs for all-electric aircraft, and small two-seat training aircraft are currently flying.
Structural Health Management (SHM) is a key part of the Integrated Vehicle Health Management (IVHM) approach, whose main aim is to develop an integrated end-to-end system to monitor the overall health of a vehicle. Structural Health Monitoring: Current State and Future Trends, edited by Professor Alessandro Pegoretti, a scholar from the University of Trento in Italy, introduces the reader to recent developments involved in health monitoring of aerospace structures. The chapters, represented by seminal SAE International technical papers, offer an overview of the most recent advances in the sensing techniques for SHM, analysis of SHM data and its applications in aerospace. SHM can allow a continuous in-service inspection of the vehicle, thus reducing the cost associated with manual inspection at predetermined time intervals.
Honda's October 2018 R&D Technical Review features cutting-edge developments and new ways of solving engineering problems. Research papers related to Honda R&D Center activities worldwide cover the work of engineering teams in automobile, motorcycle, power products, aircraft engine, and other fundamental technologies. This edition brings 15 technical papers and provides featured topics that include: • Development of the 2018 Gold Wing • Intelligent Power Unit for the 2018 Model Year Accord Hybrid • Analysis of Capacity Fading for High-Power Lithium Ion Rechargeable Batteries
Adhesive bonding has been used in the manufacture of primary aircraft fuselage and wing structures by various constructors since 1945. By a proper design, adhesive bonding often helps in designing structures mechanically equivalent to or even stronger than conventional assemblies. Adhesive Joining of Structural Components: New Insights and Technologies introduces the reader to some recent progress involved in adhesive joining of structural components. The chapters, seminal SAE International technical papers, cover the most recent advances in adhesive materials, surface preparation and controls, innovative bonding technologies, hybrid bonded/bolted joints, non-destructive testing and failure modelling of adhesively bonded joints. Edited by Dr.
In the coming decades, the growth in AM will likely be driven by production parts that leverage this increase in design freedom to manufacture parts of higher performance and improved material utilization. Contrary to popular opinion, however, AM processes do have their constraints and limitations - not everything can be manufactured with AM, and even when it is feasible, not everything should. Design for Additive Manufacturing: Concepts and Considerations for the Aerospace Industry, edited by Dr. Dhruv Bhate, is a collection of ten seminal SAE International technical papers, which cover AM from the perspective of the appropriateness (should) and feasibility (can) of using AM for manufacturing of parts and tooling. Although AM technologies have been around for three decades, many in the industry believe that we are merely at the beginning of the revolution in the design-driven aspects of this technology.
An updated revision ("Rev. H") of the second volume of the CMH-17 compendium contains statistically-based data for polymer matrix composites that meets specific CMH-17 population sampling and data documentation requirements, covering material systems of general interest. Selected historical data from previous versions of the handbook that do not meet current data sampling, test methodology, or documentation requirements, but are still of potential interest to industry are also included in this volume. Seventeen new data sets with complete documentation and publicly available specifications were added in the new Revision H of the Composites Materials Handbook, Vol.2. The new data sets include carbon fiber and glass fiber composites. The Composite Materials Handbook, CMH-17, is a six-volume engineering reference tool that contains over 1,000 records of the latest test data for polymer matrix, metal matrix, ceramic matrix, and structural sandwich composites.
Metal additive manufacturing (MAM) is an exciting emergent technology that offers the possibility of democratizing metal manufacturing worldwide. Many believe it has the ability to revolutionize product manufacturing on a global scale. MAM will require a considerable design shift for manufacturers and, hence, will disrupt conventional thinking and require adaptation. Visionaries in the mobility industry can see the transformative possibilities after materials considerations are addressed./ Materials Technology Gaps in Metal Additive Manufacturing introduces the reader to various opportunities and relationships in the study of material technologies involved in metal-based additive manufacturing of aerospace and automotive parts. Everything starts and ends with the material feedstock, and the intermediate processes that affect a particular metal. Each of the choices in the complex integrated MAM system impacts final-part properties. Edited by Dr. Cynthia K.
Up until the last two decades, aluminum in airplanes and steel in automobiles were the primary materials used to produce these two complex machines. These metal-to-metal assemblies, and specifically the same-type metal-to-metal assemblies, have resulted in distinct manufacturing process advantages over decades of production. However, advances in material types have driven manufacturing to adapt and align the fabrication and assembly processes to continue to facilitate a quality product that is reliable, can be manufactured at a price point that is affordable and be manufactured in quantities that can be widely distributed. Dissimilar metal and composite material assemblies are now requiring highly complex manufacturing processes. Innovations in Automotive and Aerospace Assembly addresses how these new, disruptive materials usage are changing the manufacturing and production processes for the transportation industries.
Updated and translated by André Luiz V. da Costa e Silva This book is a combination of a metallographic atlas for steels and cast irons and an introductory textbook covering the fundamentals of phase transformations and heat treatment of these materials. Every important stage of processing, from casting to cold working is clearly discussed and copiously illustrated with metallographs that show the obtained structures, both desired and those achieved when deviations occur. First published in 1951 by Professor Hubertus Colpaert from the Institute for Technological Research (IPT) of São Paulo, Brazil, this book became one of the most important Brazilian references for professionals interested in the processing, treatment, and application of steels and cast irons.
The History of Metals in America chronicles the development of metals as both an industrial activity and a science. Progress involving structural metals made possible the air, land, sea, and space travel of today, skyscrapers reaching over 100 stories high, and many other engineering accomplishments that continue to shape modern society. This lively book takes the reader on a fascinating journey through the evolution of metals and metallurgy from the beginning of iron production in colonial times with the first iron plant in 1645 to the prevailing metals of the 21st century. Each chapter describes the development of a metal or series of metal alloys, industry growth, and modern uses in manufacturing. It includes chapters on cast iron, wrought iron, alloy steels, tool steels, stainless steels, nickel-base superalloys, aluminum, and titanium. Other chapters cover the science of metals as it developed from 1890 to 1950 and the biographies of the pioneers of metals research.
Larger airframes drove the development of electrical systems, capable of quickly and reliably starting the new higher power engines. These soon gave rise to the need for engine-mounted electrical generators as the primary source of in-flight power for the electrical loads and onboard recharging of the aircraft battery system. Of all the backup power sources, batteries represent the most common means of storing energy for auxiliary or emergency power requirements. It is not unusual for a typical commercial airliner, such as a B-737 or A-320, to have dozens of batteries on board. Over time, multiple battery chemistries were put to the test and the industry is still working on the optimal option. The lithium-ion technology has been gaining acceptance, with some important aspects to be considered: the application type, basic safety requirements and the presence or absence of humans on the vehicle.
Polymer Matrix, Metal Matrix, and Structural Sandwich Composites 6-Volume Set: • Volume 1: Guidelines for Characterization of Structural Materials • Volume 2: Materials Properties • Volume 3: Materials Usage, Design, and Analysis • Volume 4: Metal Matrix Composites • Volume 5: Ceramic Matrix Composites • Volume 6: Structural Sandwich Composites This 6-volume set includes critical properties of composite materials that meet specific data requirements, as well as guidelines for design, analysis, material selection, manufacturing, quality control, and repair. This newly-updated engineering reference tool, part of the Composite Materials Handbook (CMH-17), also contains the latest test data for polymer matrix composites and metal matrix composites, as well as essential material relating to sandwich composites and ceramic matrix composites used in military and commercial vehicles.
The Metallic Materials Properties Development and Standardization (MMPDS) Handbook is an accepted source for metallic material and fastener system allowables, recognized by the Federal Aviation Administration (FAA), all departments and agencies of the Department of Defense (DoD), and the National Aeronautics and Space Administration (NASA), within the limitations of the certification requirements of the specific government agency. 2017 saw the release of MMPDS-12, superseding MMPDS-11 and prior editions of the MMPDS, as well as all editions of its predecessor MIL-HDBK-5. The MMPDS Handbook is revised regularly to ensure that reliable, statistically-based design properties are available for as many mature materials and/or product forms as possible.
The use of the chassis dynamometer test cells has been an integral part of the vehicle development and validation process for several decades, involving specialists from different fields, not all of them necessarily experts in automotive engineering. CHASSIS DYNAMOMETER TESTING: Addressing the Challenges of New Global Legislation (WLTP and RDE) sets out to gather knowledge from multiple groups of specialists to better understand the testing challenges associated with the vehicle chassis dynamometer test cells, and enable informed design and use of these facilities.
Aviation propulsion development continues to rely upon fossil fuels for the vast majority of commercial and military applications. Until these fuels are depleted or abandoned, burning them will continue to jeopardize air quality and provoke increased regulation. With those challenges in mind, research and development of more efficient and electric propulsion systems will expand. Fuel-cell technology is but one example that addresses such emission and resource challenges, and others, including negligible acoustic emissions and the potential to leverage current infrastructure models. For now, these technologies are consigned to smaller aircraft applications, but are expected to mature toward use in larger aircraft. Additionally, measures such as electric/conventional hybrid configurations will ultimately increase efficiencies and knowledge of electric systems while minimizing industrial costs.
This collection is a resource for studying the history of the evolving technologies that have contributed to snowmobiles becoming cleaner and quieter machines. Papers address design for a snowmobile using the EPA test procedure and standard for off-road vehicles, along with more stringent U.S. National Park Best Available Technology (BAT) standards that are likened to those of the California Air Resourced Board (CARB). Innovative technology solutions include: • Standard application for diesel engine designs • Applications to address and test both engine and track noise • Benefits of the Miller cycle and turbocharging The SAE International Clean Snowmobile Challenge (CSC) program is an engineering design competition. The program provides undergraduate and graduate students the opportunity to enhance their engineering design and project management skills by reengineering a snowmobile to reduce emissions and noise.
This collection is a resource for studying the history of the evolving technologies that have contributed to snowmobiles becoming cleaner and quieter machines. Papers address design for a snowmobile using the EPA test procedure and standard for off-road vehicles. Innovative technology solutions include: • Engine Design: improving the two-stroke, gas direct injection (GDI) engine • Applications of new muffler designs and a catalytic converter • Solving flex-fuel design and engine power problems The SAE International Clean Snowmobile Challenge (CSC) program is an engineering design competition. The program provides undergraduate and graduate students the opportunity to enhance their engineering design and project management skills by reengineering a snowmobile to reduce emissions and noise. The competition includes internal combustion engine categories that address both gasoline and diesel, as well as the zero emissions category in which range and draw bar performance are measured.