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Sanghee Kim, Donghyuk Jung, Ju-Yong Kim and Ju-Hyun Mun
Although accurately estimating the early age compressive strength of concrete is essential for the timely removal of formwork and the advancement of construction processes, it is challenging to estimate it in cool, cold, hot, or unmanaged conditions. Var...
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Yufang Wang, Jian Zhao and Ruijia Zhao
Aiming at the problem that thermocouples used in different parts of aeroengines need a lot of repeated design work in application and the high precision requirements as special test sensors, a parameterized optimization method for a thermocouple shape co...
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Daniele Cardillo, Francesco Battista, Giuseppe Gallo, Stefano Mungiguerra and Raffaele Savino
Firing test campaigns were carried out on a 200 N thrust-class hybrid rocket engine, using gaseous oxygen as an oxidizer and a paraffin-wax-based fuel. Different fuel grain lengths were adopted to extend the fuel characterization under different operatin...
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Aleksander Król, Wolfram Jahn, Grzegorz Krajewski, Malgorzata Król and Wojciech Wegrzynski
Real and numerical fire experiments involve temperature measurements with thermocouples, and thus some considerations on numerical modeling of this process are presented and a new approach to thermocouple modeling is introduced. Using ANSYS Fluent softwa...
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Hamed Basir, Shahab Alaviyoun and Marc A. Rosen
An experimental thermal survey of a turbocharger was performed in an engine test cell using IR thermography. The emissivity coefficients of housings were specified using a furnace and camera. It was shown that the emissivity of the turbine, compressor, a...
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Airingas ?uopys, Viktorija Grigaitiene, Liutauras Marcinauskas, Romualdas Ke?elis, Rolandas Uscila and Mindaugas Aikas
In this study, alumina coatings were formed using atmospheric plasma spraying, increasing the torch power from 29.4 to 45.1 kW. The surface morphology of the coatings was determined using scanning electron microscopy; the elemental composition was examin...
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Sergey N. Grigoriev, Marina A. Volosova, Sergey V. Fedorov, Mars S. Migranov, Mikhail Mosyanov, Andrey Gusev and Anna A. Okunkova
The main purpose of this paper was to study the efficiency of using diamond-like carbon (DLC) coatings based on a-C:H:Si with a pre-formed CrAlSiN sublayer to increase the cutting ability of ball end mills made of KFM-39 cemented carbide at a speed of 15...
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Yu Meng, Hongbin Gu and Fang Chen
To examine the plasma-assisted combustion of a scramjet, a microwave-enhanced gliding arc plasma method was proposed in this study, and the flame structure and combustion instability were observed. The mechanism of plasma-assisted combustion was obtained...
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Volodymyr Kochan
Pág. 129 - 137
The subject of research is accurate temperature measurements by thermocouples whose legs undergone degradation during long term operation at high temperatures. The degradation rate is approximately proportional to the temperature of constant operation of...
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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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