Results 251 to 260 of about 174,695 (299)

Performance and Acceptance of Respirator Facial Seals

Ergonomics, 1970
Three respirator full face masks with different paripheral seal designs (flat, inner flap, and pneumatic) were modified to permit study of the facial seal component. Twelve subjects participated in the study. Each subject completed a three-hour test session on each mask.
W. A. BURGESS, W. C. HINDS, S. H. SNOOK
openaire   +2 more sources

Performance of Auctions and Sealed Bids

2009
We develop models of automated E-commerce techniques, which predict the economic outcomes of these decision mechanisms, including the price attained by a good and the resulting income per unit time, as a function of the rate at which bidders provide the bids and of the time taken by the seller to decide whether to accept a bid.
Erol Gelenbe, László Györfi
openaire   +1 more source

Design Parameters of Brush Seals and Their Impact on Seal Performance

Volume 6: Oil and Gas Applications; Concentrating Solar Power Plants; Steam Turbines; Wind Energy, 2012
Brush seals, which were originally designed for gas turbine applications, have been successfully applied to large-scale steam turbines within the past decade. From gas turbine applications, the fundamental behavior and designing levers are known. However, the application of brush seals to a steam turbine is still a challenge.
H. Schwarz, J. Friedrichs, J. Flegler
openaire   +1 more source

The Influence of Designing Factors on the Sealing Performance of C-Seal

SAE Technical Paper Series, 1991
<div class="htmlview paragraph">C-shaped metal seals (C-seal) are used as static seals under the conditions such as high vacuum, high pressure, high temperature and cryogenic states.</div> <div class="htmlview paragraph">The correlation between the sealing performance and design parameters as loading force, deformation, and the ...
Takashi Yanagisawa, Masamitu Sanada, Tadashi Koga, Hiroshi Hirabayashi   +3 more
openaire   +1 more source

A Model for Static Sealing Performance of End Face Seals

Tribology Transactions, 1994
The effect of face loading, surface roughness and material properties on the static sealing performance of mechanical face seals is analyzed. The analysis combines the problems of contact and flow between two rough surfaces. The results are compared with available experimental data and are found to be reasonable.
I. Etsion, I. Front
openaire   +1 more source

Experimental Study of the Sealing Performance of Metal on Polymer Conical Seals

Journal of Tribology, 2021
Abstract This study describes an experimental investigation of the sealing performance of a metallic conical poppet and a polymeric annular seat with a round sealing edge. The experiments were carried out with nitrogen. The influence of the radius of the sealing edge and its surface roughness, on the sealing performance, is evaluated ...
R. Goltsberg, M. Gilad
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The wettability of sealing materials and its effect on sealing performance: Part I

Sealing Technology, 2016
Wetting influences the sealing mechanisms of rotary shaft lip seals and rod seals. This article, published in two parts, shows how to determine the surface free energy of sealing materials, especially elastomers. Wetting parameters and their influence on sealing operation are explained, and a hypothesis is proposed to connect wetting phenomena with ...
Peter Schuler, Werner Haas
openaire   +1 more source

Sealing Performance and Wear Mechanism of PTFE Oil Seal

2009
Modified PTFE oil seal is studied: non-linear finite element model of sealing interface is established to simulate the distribution of contact stress and the grinding condition. The friction and wear properties of PTFE composite are investigated in different loads under dry and oil-lubricated conditions.
Ye Zibo, Huang Xing, Liang Rongguang
openaire   +1 more source

Sealing Performance of Pressure-Adaptive Seal

Journal of Shanghai Jiaotong University (Science), 2022
Yuanfeng Li, Yiling Wang, Wanxin Zhang, Jinian Liu, Jialu Ma   +4 more
openaire   +1 more source

Sealing and Chromatographic Performance of Microgroove Columns

Analytical Chemistry
In a recent paper, we introduced the concept of structured microgroove columns as a potential solution to obtain perfectly ordered particle beds for nano- and micro-LC. In this concept, spherical particles are either individually positioned (single layer column) or stacked (multilayer column) in a series of interconnected micromachined pockets.
Bert Vankeerberghen, Ignaas S. M. Jimidar, Gert Desmet   +2 more
openaire   +4 more sources