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Mohammed E. Sayed, Manawar Ahmad, Hina Naim, Hossam F. Jokhadar, Saad Saleh AlResayes, Nasser M. Alqahtani, Saeed M. Alqahtani, Halah Mohammed Hothan, Jibreel A. Faqihi, Maha Abdu Othman, Halah A. Alaqi, Huda Ali Daak, Nardeen Hakami, Amal M. Masmali and Malak Ibrahim Hakami
It is common to detect a gap between the apical portion of the post and the most coronal part of gutta-percha in a root canal during post and core treatment in endodontically treated teeth. It may compromise the seal that gutta-percha material provides i...
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Gustavo Santana Barbosa, Gustavo Gonçalves Garcia, Rui Paulo Bento Pena dos Reis, Antônio Jorge Vasconcellos Garcia and Gabriel de Alemar Barberes
The present article exhibits the achieved results based on the evaluation of two petroleum systems, which compares reservoirs of fluvial environments of sedimentary basins located in the south and north Atlantic, in Brazil (Recôncavo Basin) and in Portug...
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Chunrui Liu, Lidong He, Xingyun Jia, Haozhe Zhu, Tao Chen and Wenhao Wang
The rotary seal is a key component of the aero engine. Under actual working conditions, most rotary seals always operate in an eccentric state (caused by installation errors), and when a large eccentricity occurs, it may lead to a large amount of gas lea...
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Rentong Chen, Chao Zhang, Shaoping Wang and Li Hong
Reliability estimation for key components of a mechanical system is of great importance in prognosis and health management in aviation industry. Both degradation data and failure time data contain abundant reliability information from different sources. ...
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Shimin Gao and Yanrong Wang
The blisks and labyrinth seals in gas turbine engines are typical rotating periodic structures. Vibration problems will inevitably occur during the operation, which can easily lead to High Cycle Fatigue failure of the structure. Adding ring damper is an ...
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Guangming Wang, Yue Song, Jiabo Wang, Wanqiang Chen, Yunlian Cao and Jinxing Wang
The failure of a hydraulic system will affect the shifting quality and driving safety of a CVT tractor. In order to reveal the response of the tractor under different hydraulic system failures without destroying the transmission, the following methods ar...
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Raul Simões, Bruno Martins, José Santos and Victor Neto
A mechanical seal promotes the connection between systems or mechanisms, preventing the escape of fluids to the exterior. Nonetheless, due to extreme working conditions, premature failure can occur. Diamond, due to its excellent properties, is heralded a...
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