Results 91 to 100 of about 28,309 (205)
Archives of Acoustics, 2001 The propagation velocities of four ultrasonic waves in a steel plate are measured in twelve equally spaced observation points lying in a rolling plane on a straight line perpendicular to the rolling direction.
J. LEWANDOWSKI, M. ADAMSKI, J. DEPUTAT
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Some aspects of oil lubricant additivation with ZnO nanoparticles [PDF]
, 2006 This is a study on the tribological behaviour of ZnO nanoparticles as an additive in a polyalphaolefin (PAO6) and on the influence of dispersing agents (OL100 and OL300). Antiwear and extreme pressure tests were run on two four-ball machines. Firstly, it
Chou, R. +4 more
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Journal of Materials Research and TechnologyA wide width is one of the fundamental requirements for magnesium alloy sheets to fulfill the lightweight needs of the aerospace and rail transportation industries. Nevertheless, ensuring the dimensional integrity of wide-format magnesium alloy sheets is
Yue Meng +6 more
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e-Journal of Nondestructive TestingThe use of electromagnetic acoustic transducers for the generation of ultrasonic guided waves for in-service rail testing could help overcoming some of the current limitations characterizing state of the art conventional (bulk) ultrasonic testing by ...
Andrea Appiani, Michele Carboni
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The Optimal Processing Parameters of Radial Ultrasonic Rolling Electrochemical Micromachining-RSM Approach. [PDF]
Micromachines (Basel), 2020 He K, Chen X, Wang M.
europepmc +1 more source
Technology transfer-transportation [PDF]
Problems in the public transportation industry and refining methods for decreasing the time gap between the development and the marketing of new technology are considered.
Anyos, T., Lizak, R., Wilhelm, J.
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Nonterrestrial utilization of materials: Automated space manufacturing facility [PDF]
, 1982 Four areas related to the nonterrestrial use of materials are included: (1) material resources needed for feedstock in an orbital manufacturing facility, (2) required initial components of a nonterrestrial manufacturing facility, (3) growth and ...
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Index to NASA Tech Briefs, 1975 [PDF]
, 1976 This index contains abstracts and four indexes--subject, personal author, originating Center, and Tech Brief number--for 1975 Tech ...
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Nondestructive evaluation of residual stress in low-carbon steel [PDF]
The effects of the preferred orientation on the temperature dependence of ultrasonic velocity in low carbon steels are investigated. The sensitivity of the acousto-elastic constant to changes in microstructure is assessed as well as the possibility of ...
Salama, K.
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Comparison of 4-ball and 5-ball rolling contact fatigue tests on lubricated Si3N4/steel contact [PDF]
, 2003 Accelerated four-ball and five-ball rolling tests were performed on HIPed Si3N4 ball samples (rough lapped with surface roughness value Ra0.08 μm and Rq0.118 μm) in fully lubricated condition.
Hadfield, M, Kang, J
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