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Viewing 1 to 30 of 9043
2014-04-28
Technical Paper
2014-28-0024
Swapnil Pawar, Sandip Patil, Suhas Joshi, Rajkumar Singh
Abstract Tapping is an important process in assembly of aircraft structures because on an average one millions of tapped holes are made on an aircraft structure. However, sudden breakage of the tap is the most undesirable event frequently encountered during the tapping process. In particular, this can mostly occur when small diameter internal threads are made in a ‘difficult-to-cut’ material like titanium. For this reason, it has been a topic of industrial interest in the manufacturing sector for many years. The ultrasonic vibrations assisted tapping (UVAT) is a novel manufacturing technology, where ultrasonic vibrations are provided to the work piece in the axial direction. The present work is a comprehensive study involving experimental characterization. The experimentation shows that UVAT reduces the torque during tapping as compared to that of in conventional process. There is a 19.1% reduction in torque and about 20.3% reduction in cutting temperature in UVAT over that of in CT.
2011-07-27
Magazine
Material matters While new airplane designs now entering service will use more carbon-fiber composites than ever, it is no time to count out aluminum, as promising new versions of alloys such as aluminum-lithium gain ground.
2011-04-27
Magazine
Rhenium on the rise One of the rarest elements in the Earth's crust, rhenium featurse unique properties that make it desirable for various industries, including applications in aerospace such as jet engines.
2014-08-01
Magazine
3-D manufacturing of titanium components takes off MRO providers are discovering ways to innovate their procedures while remaining viable and profitable through the current downturn in government spending. Commercial programs are flying high With economic regeneration underway this year, the rate of ordering new aircraft has been at an all-time high, with the result that backlogs for undelivered new production stretch well into the next decade for some popular models.
2011-03-02
Magazine
Materials become design, design becoems function Once things you could hold in your hand, materials have become more design ideas than entities, and the designs themselves are transforming into operational activity. The next steps in flight A look at sero engine and assembly developments as commercial airframe and engine manufacturers begin the biggest battle of all-for next-generation short-haul jet aircraft sales. NextGen Today and tomorrow The FAA has reached a major milestone on the Next Generation Air Transportation System initiative to modernize America's National Airspace System. Stacking the material deck for the 787 Combinations such as composites and titanium being used in future aircraft programs can be very challenging when drilling holes during manufacturing and assembly operations.
2013-02-01
Magazine
Advanced aluminum solutions for next-gen aerospace structures Airline competitiveness and the demand for improved aircraft performance and affordability (acquisition and operational) are driving advancements in technologies that can enable these improvements. 2050 vision Airbus provides a far-ranging, thought-provoking, reach-out toward some of the changes the commercial aerospace industry might expect to see by 2050.
2008-02-01
Magazine
Casting a vote for alloys Bringing lighter weight, improved performance, and enhanced repairability to airframes and engines. A sense of the future for UAVs Providing the unblinking eye for intelligence, surveillance, and reconnaissance. Light material brings heavy challenges Shift from aluminum to composites requires major changes in equipment, software. Ryan's 'Research' put to good use The Southwest Research Institue engineer assumes SAE President duties for 2008.
2008-06-01
Magazine
From concept in mind to product in hand Compatibility between tools for design and manufacturing engineers is improving, though it's still fraught with potential pitfalls. Cockpits on display Larger (and eventually bendable) flight displays use commercial technology for both new production and retrofit applications. Interior interests Makers of business aircraft take different approaches to designing interiors. Aerospace proves its metal Aluminum lithium, magnesium alloys, titanium metal matrix composites, and advanced coatings are all part of the future of flying.
2015-01-01
Book
F H Froes
This new book covers all aspects of the history, physical metallurgy, corrosion behavior, cost factors and current and potential uses of titanium. The history of titanium is traced from its early beginnings through the work of Kroll, to the present day broadening market place. Extensive detail on extraction processes is discussed, as well as the various Beta to Alpha transformations and details of the powder metallurgy techniques. The relationship of microstructure to mechanical properties, and the topic of corrosion are described in detail. A comprehensive section presents applications of titanium. Anyone involved in any aspect of titanium science, technology, or application (including personnel in industry, government, and academia) can benefit from this book.
2010-01-01
Book
Hugo Leon, Blaine Geddes, Xiao Huang
Predominantly driven by the development of the gas turbine engine, the superalloy industry requires continuous advancement of mechanical performance boundaries. This practical guide provides an introduction for understanding the compositional complexity of superalloys, along with the wide range of alloys developed for specific applications. Topics include the basics of alloying, strengthening mechanisms, structure of superalloys, compositional effects, superalloy selection. Manufacturing characteristics such as castability, forgeability, and weldability are also discussed, along with current research in the field.
CURRENT
2011-06-23
Standard
AMS4964B
This specification covers a titanium alloy in the form of bars, wire, forgings, flash welded rings, and stock for forging or flash welded ring.
HISTORICAL
2008-01-03
Standard
AMS4963B
This specification covers a titanium alloy in the form of bars, wire, forgings, flash welded rings, and stock for forging, flash welded rings, or heading.
HISTORICAL
2003-03-14
Standard
AMS4963A
This specification covers a titanium alloy in the form of bars, wire, forgings, flash welded rings, and stock for forging, flash welded rings, or heading.
CURRENT
2016-12-06
Standard
AMS4962B
This specification covers a premium grade titanium alloy in the form of investment castings.
HISTORICAL
1995-09-01
Standard
AMS4963
This specification covera a titanium alloy in the form of bars, wire, forgings, flash welded rings, and stock for forging, flash welded rings, or heading. These products have been used typically for parts to be rough machined prior to solution and precipitation heat treatment and for parts requiring high strength-to-weight ratios at or near room temperature, but usage is not limited to such applications. Certain processing procedures and service conditions may cause these products to become subject to stress-corrosion cracking; ARP983 recommends practices to minimize such conditions.
HISTORICAL
2005-08-29
Standard
AMS4964A
This specification covers a titanium alloy in the form of bars, wire, forgings, flash welded rings, and stock for forging or flash welded ring.
HISTORICAL
2000-07-01
Standard
AMS4964
This specification covers a titanium alloy in the form of bars, wire, forgings, flash welded rings, and stock for forging or flash welded ring.
CURRENT
2016-08-01
Standard
AMS4963D
This specification covers a titanium alloy in the form of bars, wire, forgings, flash welded rings up through 3.999 inches (101.57 mm), inclusive and stock for forging, flash welded rings, or heading.
HISTORICAL
2012-08-17
Standard
AMS4963C
This specification covers a titanium alloy in the form of bars, wire, forgings, flash welded rings, and stock for forging, flash welded rings, or heading.
HISTORICAL
1942-03-01
Standard
AMS5025
CURRENT
1946-06-01
Standard
AMS5025A
HISTORICAL
1992-07-01
Standard
AMS4994
This specification covers powdered metal products consolidated by hot isostatic pressing (HIP) of titanium alloy powder compacts.
CURRENT
2006-03-10
Standard
AMS4994A
This specification covers powdered metal products consolidated by hot isostatic pressing (HIP) of titanium alloy powder compacts.
2017-04-26
WIP Standard
AMS4988D
This specification covers a titanium alloy in the form of sheet, strip, and plate in thicknesses up through 4.000 inches (101.60 mm).
Viewing 1 to 30 of 9043

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