Clean Room Technology
Clean room technologies for control of contamininants for component reliability
Useller, James W.↗
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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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High bay clean rooms.
High bay clean room design with laminar air flow, discussing air filtration, sound attenuation, construction, illumination, etc
Little, J. C.↗
An attempt to measure the degree of adaptation produced by differing amounts of coriolis vestibular stimulation in the slow rotation room
Degrees of adaptation acquired from coriolis stimulation and head movements in rotating rooms
Graybiel, A.↗
Flaw growth behavior of Inconel 718 at room and cryogenic temperature Final report, 29 Apr. 1968 - 31 Oct. 1969
Fracture crack propagation in Inconel at room and cryogenic temperatures for surface defective samples
Feddersen, C. E.↗
Prevention of motion sickness in the slow rotation room by incremental increases in strength of stimulus
Preventing motion sickness in slow rotation room by incremental increases in strength of stimulus
Graybiel, A.↗
The transmission of sonic boom signals into rooms through open windows. Part 2 - The time domain solutions
Investigating pressure fields from sonic booms transmitted into rooms through open windows
Vaidya, P. G.↗
The room temperature deformation and fracture of several polycrystalline graphites
Room temperature tensile deformation and fracture of polycrystalline graphite as function of particle size, bulk density, preferred orientation, and stress action direction
Andersson, C. A.↗
Some lessons learned in clean room design
Clean room design problems concerning dampers, high pressure blowers, humidifiers, filters, etc
Weber, G. F.↗
Changes in subjective estimates of well-being during the onset and remission of motion sickness symptomatology in the slow rotation room
Quantification of subjective estimates of well- being during onset and remission of motion sickness symptomatology in slow rotation room
Graybiel, A.↗
Investigation of the possible structural over-test due to the gualification of spacecraft structures in a reverberant room
Determination of magnitude of structural over-test received by spacecraft structures when qualified in reverberant rooms
Mason, V.↗
The transmission of sonic boom signals into rooms through open windows. Part 1 - the steady state solution
Pressure field steady state calculations for sonic boom signal transmission into rooms through open windows
Vaidya, P. G.↗
Design requirements for laminar airflow clean rooms and devices
Laminar airflow and airborne contamination control concepts with clean room specifications and laminar flow facility designs
Garst, D. M.↗
A recent significant clean room fire
Clean room fire caused by gas heating element thermostat failure in liquid nitrogen system
Keigher, D. J.↗
Room temperature stability and performance of lithium-containing solar cells - An evaluation
Lithium-containing p-n solar cells photovoltaic performance and stability tests at room temperature
Corra, J. P.↗
Model studies of Helmholtz resonances in rooms with windows and doorways
Room with windows and open doors under sonic boom, determining cavity resonance model for impulsive loading conditions
Koopmann, G.↗
Breccia 10065 - Release of inert gases by vacuum crushing at room temperature
Inert gases release from breccia 10065 by lunar rock vacuum crushing at room temperature, suggesting breccia formation from gas-rich parent materials
Heymann, D.↗
Investigation of the Statistics of Pure Tone Sound Power Injection from Low Frequency, Finite Sized Sources in a Reverberant Room
The effect of finite source size on the power statistics in a reverberant room for pure tone excitation was investigated. Theoretical results indicate that the standard deviation of low frequency, pure tone finite sources is always less than that predicted by point source theory and considerably less when the source dimension approaches one-half an acoustic wavelength or greater. A supporting experimental study was conducted utilizing an eight inch loudspeaker and a 30 inch loudspeaker at eleven source positions. The resulting standard deviation of sound power output of the smaller speaker is in excellent agreement with both the derived finite source theory and existing point source theory, if the theoretical data is adjusted to account for experimental incomplete spatial averaging. However, the standard deviation of sound power output of the larger speaker is measurably lower than point source theory indicates, but is in good agreement with the finite source theory.
Smith, Wayne Farrior↗
Flaw growth behavior in thick welded plates of 2219-T87 aluminum at room and cryogenic temperatures
Axial load fatigue and fracture tests were conducted on thick welded plates of 2219-T87 aluminum alloy to determine the tensile strength properties and the flaw growth behavior in electron beam, gas metal arc, and pulse current gas tungsten arc welds for plates 6.35 centimeters (2.5 in.) thick. The tests were conducted in room temperature air and in liquid nitrogen environments. Specimens were tested in both the as-welded and the aged after welding conditions. The experimental crack growth rate were correlated with theoretical crack growth rate predictions for semielliptical surface flaws.
Forman, R. G.↗