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Metals Research Resources
Resources to assist with research and development of metallic materials technologies for transition to Air Force system components to provide increased system performance and efficiency, reduce cost, and accelerate manufacturing. Provides up-to-date information to assist researchers with maintaining competency to understand and connect the processing, structure, property, and performance paradigms needed for metallic materials development.
eBooks of Interest
eBooks of Interest:
Smithells Metals Reference Book by
Call Number: Electronic Book - TN671 .S55 2004eb
Publication Date: 2003-12-09
Smithells is the only single volume work which provides data on all key apsects of metallic materials. Smithells has been in continuous publication for over 50 years. This 8th Edition represents a major revision. Four new chapters have been added for this edition. these focus on; * Non conventional and emerging materials - metallic foams, amorphous metals (including bulk metallic glasses), structural intermetallic compounds and micr/nano-scale materials. * Techniques for the modelling and simulation of metallic materials. * Supporting technologies for the processing of metals and alloys. * An Extensive bibliography of selected sources of further metallurgical information, including books, journals, conference series, professional societies, metallurgical databases and specialist search tools.
Nanostructured Metals and Alloys by
Call Number: Electronic Book - TA418.9.N35 N36 2011eb
Publication Date: 2011-03-22
Tensile strength, fatigue strength and ductility are important properties of nanostructured metallic materials, which make them suitable for use in applications where strength or strength-to-weight ratios are important. Nanostructured metals and alloys reviews the latest technologies used for production of these materials, as well as recent advances in research into their structure and mechanical properties. With its distinguished editor and international team of contributors, Nanostructured metals and alloys is a standard reference for manufacturers of metal components, as well as those with an academic research interest in metals and materials with enhanced properties.
Self-Diffusion and Impurity Diffusion in Pure Metals by
Call Number: Electronic Book - QD543 .N47 2009eb
Publication Date: 2011-08-19
Diffusion in metals is an important phenomenon, which has many applications, for example in all kinds of steel and aluminum production, and in alloy formation (technical applications e.g. in superconductivity and semiconductor science). In this book the data on diffusion in metals are shown, both in graphs and in equations. Reliable data on diffusion in metals are required by researchers who try to make sense of results from all kinds of metallurgical experiments, and they are equally needed by theorists and computer modelers. The previous compilation dates from 1990, and measurements relying on the electron microprobe and the recent Rutherford backscattering technique were hardly taken into account there. This reference book, containing all results on self-diffusion and impurity diffusion in pure metals with an indication of their reliability, will be useful to everyone in this field for the theory, fundamental research and industrial applications covered.
Superplastic Forming of Advanced Metallic Materials by
Call Number: Electronic Book - TA418.14 .S874 2011
Publication Date: 2011-06-27
Ultra fine-grained metals can show exceptional ductility, known as superplasticity, during sheet forming. The higher ductility of superplastic metals makes it possible to form large and complex components in a single operation without joints or rivets. The result is less waste, lower weight and manufacturing costs, high precision and lack of residual stress associated with welding which makes components ideal for aerospace, automotive and other applications. Superplastic forming of advanced metallic materials summarises key recent research on this important process. Part one reviews types of superplastic metals, standards for superplastic forming, processes and equipment. Part two discusses ways of modelling superplastic forming processes whilst the final part of the book considers applications, including superplastic forming of titanium, aluminium and magnesium alloys. With its distinguished editor and international team of contributors, Superplastic forming of advanced metallic materials is a valuable reference for metallurgists and engineers in such sectors as aerospace and automotive engineering. Note: The Publishers wish to point out an error in the authorship of Chapter 3 which was originally listed as: G. Bernhart, Clément Ader Institute, France. The correct authorship is: G Bernhart, P. Lours, T. Cutard, V. Velay, Ecole des Mines Albi, France and F. Nazaret, Aurock, France. The Publishers apologise to the authors for this error.
Books from the National Academies Press
Free eBooks [PDFs] from the National Academies Press
Data-Driven Modeling for Additive Manufacturing of Metals: Proceedings of a Workshop (2019) [Download a free PDF of this book from the National Academies Press.]
Additive manufacturing (AM) is the process in which a three-dimensional object is built by adding subsequent layers of materials. AM enables novel material compositions and shapes, often without the need for specialized tooling. This technology has the potential to revolutionize how mechanical parts are created, tested, and certified. However, successful real-time AM design requires the integration of complex systems and often necessitates expertise across domains. Simulation-based design approaches, such as those applied in engineering product design and material design, have the potential to improve AM predictive modeling capabilities, particularly when combined with existing knowledge of the underlying mechanics. These predictive models have the potential to reduce the cost of and time for concept-to-final-product development and can be used to supplement experimental tests.
Books of Interest
Books of Interest:
Fundamentals of Materials Science and Engineering by
Call Number: TA403 .C227 2012
Publication Date: 2011-11-15
Callister and Rethwisch's Fundamentals of Materials Science and Engineering 4th Edition continues to take the integrated approach to the organization of topics. That is, one specific structure, characteristic, or property type at a time is discussed for all three basic material types: metals, ceramics, and polymeric materials. This order of presentation allows for the early introduction of non-metals and supports the engineer's role in choosing materials based upon their characteristics. Also discussed are new, cutting-edge materials. Using clear, concise terminology that is familiar to students, Fundamentals presents material at an appropriate level for both student comprehension and instructors who may not have a materials background.
Microstructure of Metals and Alloys by
Call Number: TN690 .Z4585 2008
Publication Date: 2008-05-05
A teaching tool intended to complement existing books on the theory of materials science, metallurgy, and electron microscopy, this text focuses on metals and alloys. It visualizes key structural elements common to crystalline materials, including crystal lattice imperfections, along with the principles and steps involved in the microstructure development in metallic materials under external influences. Designed as an atlas, Microstructure of Metals and Alloys contains a collection of carefully selected original transmission electron microscope (TEM) micrographs taken by the authors. These images demonstrate typical crystal lattice defects, elements of the microstructure of metals and alloys, and the basic processes occurring to the crystal structure during plastic deformation, polygonization, recrystallization, and rapid solidification. Providing comprehensive, illustrative coverage of the basic topics in materials science, this important work emphasizes fundamental principles over specific materials, in a manner that is fully consistent with the contemporary tendency in materials science teaching.
Articles of Potential Interest:
Articles of Potential Interest:
Additive manufacturing in the context of structural integrity
Author(s): Gorelik, M (Gorelik, Michael)
Source: INTERNATIONAL JOURNAL OF FATIGUE Volume: 94 Special Issue: SI Pages: 168-177 DOI: 10.1016/j.ijfatigue.2016.07.005 Part: 2 Published: JAN 2017
Abstract: Additive Manufacturing (AM) applications are poised to rapidly expand in aviation, driven by a significant number of business and technical benefits that have been extensively discussed in the media. Due to its inherent flexibility, AM is being considered for a variety of application domains that span new parts, repairs and aftermarket. At the same time, a number of implementation challenges have been identified by multiple researchers and organizations, including the complexity of manufacturing process controls, the questionable applicability of conventional NDI (non-destructive inspection) methods and the lack of industry standards and design allowables, etc. These technical challenges are further exacerbated by the current lack of field experience with AM components as well as limited full-scale production experience, at least in commercial aviation applications. Analysis of historical lessons learned for introduction of new material technologies suggests that appropriate application of fracture mechanics-based damage tolerance (DT) principles can offer an effective risk mitigation mechanism against the inherent material flaws, as well as manufacturing and service-induced defects. This paper outlines an assessment framework for AM parts based on the combination of zoning considerations and probabilistic fracture mechanics. The proposed methodology is discussed in the context of a "system-level" approach to structural integrity of AM components, and is compared and contrasted with established risk mitigation frameworks for other material systems, such as the use of casting factors for cast aircraft components, or probabilistic life prediction systems for powder metallurgy (PM) turbine engine components. Potential implications for regulatory guidance and certification, including linkage between the DT criteria and levels of parts criticality are briefly discussed as well. Published by Elsevier Ltd.
A new methodology for automating acoustic emission detection of metallic fatigue fractures in highly demanding aerospace environments: An overview
Author(s): Holford, KM (Holford, Karen M.); Eaton, MJ (Eaton, Mark J.); Hensman, JJ (Hensman, James J.); Pullin, R (Pullin, Rhys); Evans, SL (Evans, Sam L.); Dervilis, N (Dervilis, Nikolaos); Worden, K (Worden, Keith)
Source: PROGRESS IN AEROSPACE SCIENCES Volume: 90 Pages: 1-11 DOI: 10.1016/j.paerosci.2016.11.003 Published: APR 2017
Abstract: The acoustic emission (AE) phenomenon has many attributes that make it desirable as a structural health monitoring or non-destructive testing technique, including the capability to continuously and globally monitor large structures using a sparse sensor array and with no dependency on defect size. However, AE monitoring is yet to fulfil its true potential, due mainly to limitations in location accuracy and signal characterisation that often arise in complex structures with high levels of background noise. Furthermore, the technique has been criticised for a lack of quantitative results and the large amount of operator interpretation required during data analysis. This paper begins by introducing the challenges faced in developing an AE based structural health monitoring system and then gives a review of previous progress made in addresing these challenges. Subsequently an overview of a novel methodology for automatic detection of fatigue fractures in complex geometries and noisy environments is presented, which combines a number of signal processing techniques to address the current limitations of AE monitoring. The technique was developed for monitoring metallic landing gear components during pre-flight certification testing and results are presented from a full-scale steel landing gear component undergoing fatigue loading. Fracture onset was successfully identify automatically at 49,000 fatigue cycles prior to final failure (validated by the use of dye penetrant inspection) and the fracture position was located to within 10 mm of the actual location.
An Innovative Diagnostic Film for Structural Health Monitoring of Metallic and Composite Structures
Author(s): Bekas, DG (Bekas, Dimitrios G.); Sharif-Khodaei, Z (Sharif-Khodaei, Zahra); Aliabadi, MHF (Aliabadi, M. H. Ferri)
Source: SENSORS Volume: 18 Issue: 7 Article Number: 2084 DOI: 10.3390/s18072084 Published: JUL 2018
Abstract: A novel lightweight diagnostic film with sensors/actuators and a multiple-path wiring option using inkjet printing was developed. The diagnostic film allows for systematic, accurate, and repeatable sensor placement. Furthermore, the film is highly flexible and adaptable for placement on complex configurations. The film can be attached to the surface of the structure through a uniform secondary boundary procedure or embedded within the composite layup during curing. The surface-mounted film can simply be peeled off for repair or replacement without scratching or damaging the part. The film offers significant weight reduction compared to other available technologies. A set of extreme temperature, altitude, and vibration environment test profiles were carried out following the Radio Technical Commission for Aeronautics (RTCA) DO-160 document to assess the durability and performance of the diagnostic film for onboard application. The diagnostic film was shown to be durable and reliable in withstanding the variable operational and harsh environmental conditions of tests representing the conditions of regional aircraft.