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Yicheng Yang, Zhaoguo Mi, Wencan Zhang, Jiaqi Chang, Yongjun Liu, Bintao Zhong and Weihua Yang
The labyrinth-honeycomb seals have been widely used in aero-engine. However, radial cracks appear on labyrinth seal fins of shrouded turbine blade in use. To clarify the rubbing mode of radial crack initiation, a high-speed rubbing test bench was designe...
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Yicheng Yang, Jiaqi Chang, Zhaoguo Mi and Weihua Yang
Radial cracks appear in the labyrinth seal fins of the shrouded turbine blade of an aero-engine during service. To clarify the influence rule of rubbing force on crack initiation, a high-speed rubbing test bench and a numerical calculation model are esta...
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Mohammad Adhitya,Rolan Siregar,Danardono A Sumarsono,Nazaruddin Nazaruddin,Ghany Heryana,Sonki Prosetyo,Fuad Zainuri
Pág. 6 - 11
Brake failure is one of the causes of fatal accidents because the vehicle cannot be controlled properly. Therefore, research on improving brake safety needs to be assessed immediately. Brake temperature is used as an indicator of brake performance. If th...
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Manuel Hildebrandt, Corina Schwitzke and Hans-Jörg Bauer
The literature already contains some experimental, analytical and numerical investigations on the rubbing and hysteresis behaviour of brush seals. What the investigations have in common is that they were carried out with new and uncontaminated seals, or ...
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Oliver Munz, Tim Pychynski, Corina Schwitzke and Hans-Jörg Bauer
Labyrinth seals are a state-of-the-art sealing technology to prevent and control leakage flows at rotor?stator interfaces in turbomachinery. Higher pressure ratios and the economical use of cooling air require small clearances, which lead to potential ru...
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Manuel Hildebrandt, Heiko Schwarz, Corina Schwitzke, Hans-Jörg Bauer and Jens Friedrichs
Reducing losses in the secondary air system of gas and steam turbines can significantly increase the efficiency of such machines. Meanwhile, brush seals are a widely used alternative to labyrinth seals. Their most valuable advantage over other sealing co...
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Oliver Munz, Tim Pychynski, Corina Schwitzke and Hans-Jörg Bauer
Labyrinth seals are a state-of-the-art sealing technology to prevent and control leakage flows at rotor–stator interfaces in turbomachinery. Higher pressure ratios and the economical use of cooling air require small clearances, which lead to potent...
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Manuel Hildebrandt, Heiko Schwarz, Corina Schwitzke, Hans-Jörg Bauer and Jens Friedrichs
Reducing losses in the secondary air system of gas and steam turbines can significantly increase the efficiency of such machines. Meanwhile, brush seals are a widely used alternative to labyrinth seals. Their most valuable advantage over other sealing co...
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Minghong Jiang, Zhaoli Zheng, Yonghui Xie and Di Zhang
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Wei Du, Danying Zuo, Houlei Gan and Changhai Yi
Kapok is a hollow fiber with a 90% hollow degree. Compared with cotton fiber, kapok fiber has excellent performances, such as good hygroscopicity, and a good warmth retention property. In this work, desized indigo kapok/cotton denim fabrics were bleached...
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Florentina Monica Raduly, Valentin Raditoiu, Alina Raditoiu, Violeta Purcar, Georgiana Ispas, Adriana Nicoleta Frone, Raluca Augusta Gabor and Cristian-Andi Nicolae
The recent development of the ?eco-friendly? current has brought to the attention of researchers natural dyes that are biodegradable, do not cause allergies and generally have anti-UV protection, and antioxidant and antibacterial properties. In this stud...
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Amna Siddique, Tufail Hassan, Sharjeel Abid, Munir Ashraf, Azmat Hussain, Faizan Shafiq, Muhammad Qamar Khan and Ick Soo Kim
Prolonged drying times of terry fabrics is a problem as they can not be re-used until completely dry. To resolve this issue, we have designed a sandwich polyester in the mid-layer with low moisture content that could reduce the drying time with excellent...
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Andrew Pilkington, Budimir Rosic and Shigenari Horie
During the shutdown of a gas turbine, natural convection flows occur inside of the engine casing. These natural convection flows cause the top of the engine casing to cool more slowly than the bottom of the casing. This non-uniform cooling can cause the ...
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Ilker S. Bayer
Transparent liquid repellent coatings with exceptional wear and abrasion resistance are very demanding to fabricate. The most important reason for this is the fact that majority of the transparent liquid repellent coatings have so far been fabricated by ...
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Eric M. Hinsch and Sara C. Robinson
Colorfastness to washing and crocking (color loss due to rubbing) are essential qualities for any dye/fabric combination that will be used for garments or upholstery. In this study, colorfastness to washing and crocking of fabrics dyed with wood-staining...
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Ali Anvari
Pág. 137 - 141
In this paper, by applying analytical method and using experimental method data, the effect of sliding velocity on friction coefficient for contact of copper with copper is investigated. Some equations for obtaining friction coefficient as a function of ...
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Sule Sultan Ugur
Large amounts of water, synthetic dyestuffs and chemicals are used in the wet processes of textile finishing, and at the end of these processes, liquors containing chemical substances create a waste load. For this reason, it is of great importance to dev...
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Zhijun Zhao, Chunxiao Yan, Fei Xu and Jianhong Liu
Natural dyes play an important role in sustainable dyeing processes. However, natural yellow dyes with good performance are rare. Traditional natural yellow dyes have issues, such as a narrow color range and poor light fastness. In this paper, a new natu...
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Sa-Haeng Kang, Dong-Gu Kim, Dong-Keun Kim, Hyuck-Se Kwon, Na-Young Lee, Hyun-Jeong Oh, Soon-Il Yun and Jong-Sik Jin
Allergic rhinitis (AR) is defined allergic disease that is mediated by Th2 cells. Its incidence rate is showing a growing tendency worldwide. Research on traditional medicine for AR is also being increasingly conducted. Thymus quinquecostatus Celakovski ...
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Wei-Fan Chiang, Shih-Xuan Lin, Yong-Xuan Lee, Yu-Han Shih, Jih-Hsin Liu, Harry-Miyosi Silalahi, Chia-Rong Lee and Chia-Yi Huang
A liquid crystal (LC) layer that is too thick exhibits a small terahertz birefringence due to the limited long-range force of the alignment layers that exert on it. An LC layer that is too thin has a small terahertz birefringence due to its invisibility ...
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