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Asadullah Dawood, Shazia Bashir, Naveed Ahmed, Asma Hayat, Abdullah Yahia AlFaify, Syed Muhammad Abouzar Sarfraz, Shahab Ahmed Abbasi and Ateekh Ur Rehman
In the present study, the influence of a 1.1 tesla Transverse Magnetic Field (TMF) on Laser-Induced Breakdown Spectroscopy (LIBS) of Mg-alloy plasma has been explored. The Mg plasma was produced using an Nd: YAG laser (1064 nm, 10 ns) at an intensity of ...
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Hryhorii Ilchuk,Andrii Kashuba,Ivan Kuno,Sergey Sveleba,Taras Malyi,Roman Petrus,Volodymyr Tsiumra,Ihor Semkiv
Pág. 24 - 30
Monocrystals (N(CH3)4)2MnCl4 were grown from an aqueous solution of salts by slow evaporation at room temperature. The effect of phase transitions on the behavior of photoluminescence spectra, as well as excitation spectra and time of attenuation of the ...
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Konstantin G. Mikheev, Tatyana N. Mogileva, Arseniy E. Fateev, Nicholas A. Nunn, Olga A. Shenderova and Gennady M. Mikheev
Laser-induced graphitization of 100 nm monocrystals of diamond particles synthesized by high-pressure high-temperature (HP-HT) methods is not typically observed. The current study demonstrates the graphitization of 150 nm HP-HT nanodiamond particles in c...
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Diego Scaccabarozzi, Bortolino Saggin, Marianna Magni, Marco Giovanni Corti, Pietro Valnegri, Ernesto Palomba, Andrea Longobardo, Fabrizio Dirri and Emiliano Zampetti
Outgassing or thruster?s generated contaminants are critical for optical surfaces and optical payloads because scientific measurements and, in general, the performances can be degraded or jeopardized by uncontrolled contamination. This is a well-known is...
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Ghazanfar Mehdi, Maria Grazia De Giorgi, Sara Bonuso, Zubair Ali Shah, Giacomo Cinieri and Antonio Ficarella
This study investigates the kinetic modeling of CH4/H2/Air mixture with nanosecond pulse discharge (NSPD) by varying H2/CH4 ratios from 0 to 20% at ambient pressure and temperature. A validated version of the plasma and chemical kinetic mechanisms was us...
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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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Hanzlah Akhlaq, Faheem Butt, Mamdooh Alwetaishi, Mamoon Riaz, Omrane Benjeddou and Enas E. Hussein
This paper presents the operational modal analysis of a 90-m-high RC minaret of an iconic mosque considered as a landmark of the city. The minaret was monitored for three days with 11 tri-axial MEMS accelerometers. The purpose of the study was to observe...
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Yuze Sun, Dan Zhao and Xiaowei Zhu
In the present work, 3D Unsteady Reynolds-Averaged Navier-Stokes (URANS) simulations are performed to investigate the generation and mitigation mechanism of combustion-sustained thermoacoustic instabilities in a modelled swirl combustor. The effects of (...
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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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Linya Liu, Zhiyuan Zuo, Yunlai Zhou and Jialiang Qin
The high-speed railway (HSR) has been a long-term hotspot in both scientific and engineering societies to enhance the long-term high quality HSR service. This study aims to investigate the WJ-7B type small resistance fastener rubber pad applied in HSR, a...
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Ying Wen, Qilin Zhang, Haiyang Gao, Jiyao Xu and Qinzeng Li
In this paper, the complete process in which a concentric gravity wave (CGW), excited by a tropospheric thunderstorm, propagated into the stratosphere and mesosphere in Northern China is investigated. A strong thunderstorm developed in the middle of the ...
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Krzysztof Kluszczynski and Zbigniew Pilch
The paper is focused on magnetorheological (MR) clutches applied in industrial drive systems working in a steady continuous-duty state. The main goal of the carried out numerical and analytical analyses oriented towards electrical power consumption, copp...
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Vu Hoang Minh Doan, Van Tu Nguyen, Jaeyeop Choi, Sumin Park and Junghwan Oh
The objective of this study is to design a therapeutic method combining a portable high intensity focused ultrasound (HIFU) design which is suitable for the laboratory environment and a tailored integrated photo-acoustic imaging (PAI) system for monitori...
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Qi Song, Xinhua Wei, Weihong Sun, Zemin Lu and Tao Tao
The intelligent control of the paddy drying process is an prominent development trend and the accurate detection of paddy moisture content is the basis for the intelligent control of the paddy drying process. For the design of a paddy moisture sensor, el...
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Bo Li, Dayuan Zhang, Jixu Liu, Yifu Tian, Qiang Gao and Zhongshan Li
The applications of femtosecond lasers to the diagnostics of combustion and flow field have recently attracted increasing interest. Many novel spectroscopic methods have been developed in obtaining non-intrusive measurements of temperature, velocity, and...
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Yuquan Zhang, Sheng Hong, Jinran Lin and Yuan Zheng
The corrosion behavior of unsealed and sealed high-velocity oxygen-fuel (HVOF)-sprayed nanostructured WC-CoCr cermet coatings under different corrosive environments was investigated using scanning electron microscopy (SEM), open circuit potential (OCP), ...
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Jianchao Wu, Changhang Xu, Baoxin Qi and Francisco C. Robles Hernandez
The main purpose of the current research is to pilot study the impact damage detection in a beam structure using infrared thermography. In this study, a beam structure, made of polyvinyl alcohol fiber reinforced engineering cementitious composite (PVA-EC...
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Daniele M. Trucchi, Alessandro Bellucci, Marco Girolami, Matteo Mastellone and Stefano Orlando
Diamond is a wide bandgap semiconductor with excellent physical properties which allow it to operate under extreme conditions. However, the technological use of diamond was mostly conceived for the fabrication of ultraviolet, ionizing radiation and nucle...
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Selin Aydin, Oguzhan Ustun, Atena Ghosigharehaghaji, Taha Tavaci, Asli Yilmaz and Mehmet Yilmaz
In the last two decades, fluorescent carbon quantum dots (CQDs) have attracted intense interest as a new fluorescent nanomaterial with unique properties. This material offers significant advantages compared with conventional dyes and inorganic QD systems...
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Chuanqing Geng, Wenxiong Shi, Zhanwei Liu, Huimin Xie and Wei He
As a revolutionary new technique, laser-engineered net shaping (LENS) is a layer additive manufacturing process that enables accurate, rapid and automatic repair of industrial component damage. In the laser repair (LR) process or in service, surface crac...
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