Results 91 to 100 of about 79,931 (210)
Improved impact-resistant boron-aluminum composites for use as turbine engine fan blades [PDF]
Efforts to improve the impact resistance of B/Al are reviewed and analyzed. Thin sheet Charpy and Izod impact tests and standard full size Charpy impact tests were conducted on unidirectional and angleply composites containing 4, 5.6 and 8 mil boron in ...
Mcdanels, D. L., Signorelli, R. A.
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Effect of Inclusion and Structure on Low Temperature Impact Toughness of 20R Steel
Teshugang, 2007 The effect of cleanliness and rolling process of two heats of 20R steel-0. 15C,0.008P,0.008S,0.06Mo and 0. 18C,0.009P,0.004S,0.01Mo on low temperature impact energy of steel has been rescarched by 200 kg vacuum induction furnace and 500 mm mill in ...
王勇, 苏春霞, 张起生
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The NASA Lewis Research Center's Ceramic Technology Program is focused on aerospace propulsion and power needs. Thus, emphasis is on high-temperature ceramics and their structural and environmental durability and reliability.
Dicarlo, James A. +2 more
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Register of experts for information on mechanics of structural failure [PDF]
This register is comprised of a list of approximately 300 experts from approximately 90 organizations who have published results of theoretical and/or experimental research related to six problem areas in the mechanics of structural failure: (1) life ...
Carpenter, J. L., Jr., Stuhrke, W. F.
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High performance composites research at NASA-Langley [PDF]
Barriers to the more extensive use of advanced composites in heavily loaded structures on commercial transports are discussed from a materials viewpoint. NASA-Langley matrix development activities designed to overcome these barriers are presented.
Baucom, Robert M. +2 more
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NASA-UVA light aerospace alloy and structures technology program [PDF]
The report on progress achieved in accomplishing of the NASA-UVA Light Aerospace Alloy and Structures Technology Program is presented. The objective is to conduct interdisciplinary graduate student research on the performance of next generation, light ...
Gangloff, Richard P. +9 more
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Development and characterization of Powder Metallurgy (PM) 2XXX series Al alloy products and Metal Matrix Composite (MMC) 2XXX Al/SiC materials for high temperature aircraft structural applications [PDF]
The results of a series of material studies performed by the Lockheed Aeronautical Systems Company over the time period from 1980 to 1991 are discussed. The technical objective of these evaluations was to develop and characterize advanced aluminum alloy ...
Chellman, D. J. +2 more
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Jixie chuandong, 1995 In order to find out the failure sources of teeth breakage on sprial bevel gears, competed analyses and researches dealing with design with design manufacture technology have been taken in this paper. in this paper. From the analyses on breaking sections,
Wang Yungen
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Mechanical behavior and failure phenomenon of an in situ-toughened silicon nitride [PDF]
The Weibull modulus, fracture toughness and crack growth resistance of an in-situ toughened, silicon nitride material used to manufacture a turbine combustor were determined from room temperature to 1371 C.
Choi, Sung R. +3 more
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Fracture toughness testing data: A technology survey [PDF]
Technical abstracts for about 90 significant documents relating to fracture toughness testing for various structural materials including information on plane strain and the developing areas of mixed mode and plane stress test conditions are presented. An
Carpenter, J. L., Jr., Stuhrke, W. F.
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