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Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004129
EISBN: 978-1-62708-184-9
... Abstract This article provides a historical review of corrosion problems in military electronic equipment. It describes the importance of design for corrosion control of an electronic black box used to contain electrical equipment that provides various functions. The article illustrates...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003477
EISBN: 978-1-62708-195-5
... Abstract This article provides information on the applications of fiber-reinforced composites in commercial and military aircrafts. It tabulates the composite components in various types of aircraft. The applications of the composites in the components of Boeing 727, 737, 757, 767, 777, and 777...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003386
EISBN: 978-1-62708-195-5
... Abstract This article addresses the issue of the implementation of composite damage tolerance requirements as it relates to military aircraft. It presents a brief introduction on the durability impact threat, damage tolerance impact threat, and other damage tolerance damage threats. The article...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005169
EISBN: 978-1-62708-186-3
... in elastic region, where x1 is b Materials derivative (denotes rate of eu the bending ber direction. For atomic percent DASA change) exp B atmospheres (pressure) plane strain and isotropic bal American Welding Society DBMS day f bcc DBTT incremental strain F elasticity, E0= E : bct Burgers (slip) vector...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003411
EISBN: 978-1-62708-195-5
... Abstract Automated tape laying is a mature process used in both commercial and military aircraft applications. This article provides a brief history of the process and describes the use of commercially available flat and contour tape-laying equipment. It discusses the advantages...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003350
EISBN: 978-1-62708-195-5
... dimensions. Many applications require isotropy in a plane, and this is achieved by controlling the fiber orientation within a laminated composite. Hybrid organic- metal laminates are also used, where, for example, layers of glass/epoxy are combined with aluminum alloy sheets. These laminates provide improved...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003368
EISBN: 978-1-62708-195-5
... and thermoplastics. Source: Ref 9 and manufacturer data (PEI, Hexcel Corp.; PEEK, Cytec Fiberite) Meanwhile, the military was pressed by timing requirements for new programs, such as the F-22 and the F-18E&F. Based on many tests and evaluations, it was concluded that improvements provided by second...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003031
EISBN: 978-1-62708-200-6
...” in this Volume. Composite materials were developed because no single, homogeneous structural material could be found that had all of the desired attributes for a given application. Fiber-reinforced composites were developed in response to demands of the military aerospace community, which is under constant...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003444
EISBN: 978-1-62708-195-5
... standard elements used to characterize composite materials for the various failure modes. Simple structural-element testing under in-plane unidirectional, multidirectional, and combined loading, as well as out-of-plane loading are discussed. Simple bolted and bonded joints, as well as data correlation...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002470
EISBN: 978-1-62708-194-8
... as they relate to fracture toughness and design process. The article explores the use of plane strain fracture toughness, crack-tip opening displacement, and the J-integral as the criteria for the design and safe operation of structures and mechanical components. It discusses the variables affecting fracture...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006817
EISBN: 978-1-62708-329-4
... their technical report “Reliability-Centered Maintenance,” and this title gave the final version of the process the name by which it is known today. Once the DoD published Nowlan and Heap’s report, the U.S. military embarked on developing RCM processes for its own use, one for the U.S. Army, one for the U.S...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003373
EISBN: 978-1-62708-195-5
... ) is normally pictured as a planar assembly of atoms arranged in hexagonal patterns, much like “chicken” wire. Multiple planes of the basic sheet structure are stacked in a regular pattern, such that alternating planes are exactly matched and aligned. Both the diamond and graphite structures create long-range...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001253
EISBN: 978-1-62708-170-2
... of the gold deposit. Initially, wear resistance was increased by hardening the deposit to 150 to 250 HK. Later, wear resistance was increased by altering the crystal orientation of the gold deposit from the (100) plane to the slip plane, (111). Both of these results were achieved by the addition of controlled...
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001063
EISBN: 978-1-62708-162-7
..., anisotropy of in-plane properties, the need for cold work to attain peak properties, and accelerated fatigue crack extension rates when cracks are microstructurally small ( Ref 1 ). These limitations have precluded the direct substitution of aluminum airframe alloys with aluminum-lithium alloys, although...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003398
EISBN: 978-1-62708-195-5
... is stress, ε is strain, and E is Young's modulus. For composites: σ i j = Q i j ε i j where Q ij is the lamina stiffness. The stiffness matrix for plane stress is called the reduced stiffness matrix, where, ij = 1, 2, and 6: [ Q ] = [ Q 11...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003504
EISBN: 978-1-62708-180-1
... published Nowlan and Heap's report, the U.S. military embarked on developing RCM processes for its own use, one for the U.S. Army, one for the U.S. Air Force, and two for the U.S. Navy, because the shipboard and aviation communities of the Navy insisted that a RCM process that worked for one would not work...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002416
EISBN: 978-1-62708-193-1
... Abstract This article presents the damage tolerance criteria for military composite aircraft structures to safely operate the structures with initial defects or in-service damage. It describes the effects of defects, such as wrinkles in aircraft structures, and the reduction in compressive...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002410
EISBN: 978-1-62708-193-1
... to maximum and back to zero. For some military engines, thrust settings are varied so greatly that they can also be considered as a fatigue cycle. Turbine components thus experience thermomechanical loading and fatigue as well as creep-fatigue interactions. The good combination of strength and toughness...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003459
EISBN: 978-1-62708-195-5
.... If the engineering support is not available, then the part must be replaced. Military organizations have their own similar procedures. Durability and inspectability of repairs are also a concern. Since a large percentage of composite repairs are bonded rather than bolted, the long-term durability of the adhesive...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003439
EISBN: 978-1-62708-195-5
... approval process under the authority of an organization other than the designer. The approving organization can be the end user (especially in the case of a military application, where the process might be called qualification ) or a government regulatory agency, in the case of publicly regulated...