نتایج جستجو برای: fluid seals
تعداد نتایج: 224569 فیلتر نتایج به سال:
shape is regarded as one of outward characteristics of islamic seals. this characteristic, which is part of common traits of all different areas of seal studies, could be defined as framework of circumference of seals impression on written materials and documents, which in fact results from the shape of seals surfaces. shape has been considered as one of the ways of recognizing the administrati...
The primary task of rotary shaft seals is to prevent an unwanted fluid transfer between two areas. In passages gearboxes, for example, avoid the leakage transmission oil ambient air. This means flow in lubricant film sealing gap edge and surface consists at least phases. Taking phenomenon cavitation into account, three study aims provide in-depth understanding multiphase seals. As experimental ...
Multi-lip reciprocating seals are extensively used in the subject of engineering equipment. However, current research on tribology mainly focused focuses numerical analysis single-lip seals. In order to study sealing performance multi-lip seals, this paper takes double-acting seal (DAS) as object, and establishes a mixed elastohydrodynamic lubrication (M-EHL) simulation model from perspective s...
Sealing is a crucial factor in most aspects of our daily lives within our homes and vehicles. Among the hundreds of seals in the average vehicle, modern turbocharged engines include at least one seal that is required to carry out a similar duty to those of interest in this paper; that is, separating the engine air flow from bearing oil. Also in the oil and gas industry, or in a petrochemical pr...
Background and Aims: Microorganisms are the main cause of pulpal and periapical diseases. The most important failure factor is the lack of proper seals for the canal, resulting in microbial leakage. Therefore, the purpose of this study was to evaluate the sealing ability of ProRoot MTA and Bio MTA in canal obturation using fluid infiltration. Materials and Methods: In this experimental study, ...
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