The seals are the important component of the aircraft engine to prevent leakage of gas or oil. Because the contact and friction problems have a great influence on the performance of the seals, the concept and theory of tribology is already widely applied in research and design processes of advanced seals. This report selected three kinds of representative seals which are co...

Spiral grooves are used to enhance the generation of a fluid film between sliding surfaces mechanical face seal when fluids with poor lubrication properties be sealed. This technical solution allows reducing asperity contact, wear, and friction during operation, due full surfaces. However because thickness film, flow regime can turn from laminar turbulent. transition significantly affect perfor...

A new type of stepped seal with a ribbed casing is proposed to efficiently reduce the leakage at tips turbine blades. The characteristics two different types labyrinth seals (conventional vs. seal) were compared and analyzed through computational fluid dynamics (CFD) in wide operating range pressure ratios clearances. analysis showed that has superior performance conventional all clearance size...

In this study, electronic door seals (E-seals) are tested on shipping containers that traveled through ports, over borders, and on roadways. The findings show that using RFID devices increases supply chain efficiency and improves the security of containerized cargo movements, particularly when E-seals replace common mechanical seals. Before the benefits of E-seals can be realized, several barri...

Balance piston seals are subjected to large pressure differential and can generate large forces directly impacting the stability of centrifugal compressors. The most common designs are textured seals such as honeycomb, hole-pattern seals, and pocketed seals including pocket damper seals (PDS) and fully partition damper seals (FPDS), shown in Fig. 1. The dynamic performance of textured seals hav...

Abstract Additive manufacturing (AM) methods are finding more and applications in the of machine parts. One consequence this method is that generated surface qualities typically lower than other processes. This becomes especially relevant when quality critical for mechanical function: case dynamic sealing technologies, example, seals between a moving rod hydraulic cylinder. Between seal lip pol...