Article
Engineering, Chemical
Qi Jing, Qingming Liu, Dan Wang, Yang Shen, Zhisong Wang
Summary: Studying the force model of flake and spherical particles in a two-phase flow system is of great significance for reducing dust hazards. A new CFD method is used to determine the correspondence between drag coefficient and Reynolds number for spherical particles. The stress states of flake particles are summarized into different models, and the equivalent drag coefficient and Reynolds number relationship is obtained. Experimental and numerical simulation results show that flake powder has a more obvious size effect and better fluidity compared to spherical powder, making it easier to remove from the production workshop.
Article
Forestry
Yanchen Li, Weiye Zhang, Jingmeng Sun, Xiaoyang Fang, Beibei Wang, Fangzhou Li, Daihui Zhang, Hongwu Guo, Yi Liu
Summary: Wood was delignified and impregnated with PEG-based eutectic polymer (PGMA), while styrene (SM) grafted AlN was used as a thermal conductive filler to synthesize a stable phase change heat storage wood. The addition of PS-AlN improved the thermal stability and loss resistance, leading to the formation of a potential material for storing and releasing solar energy. The phase change wood exhibited a wide temperature range, low heat loss rate, and enduring heat storage capacity under simulated solar light source.
WOOD SCIENCE AND TECHNOLOGY
(2023)
Article
Engineering, Chemical
Xiangbao Meng, Ke Yan, Zhichao Pan, Yansong Zhang, Jiqing Liu, Lei Shi, Yang Wu
Summary: The suppression performance and action mechanism of inert powder on aluminum powder explosion flame were studied using a dust explosion flame propagation test system. The research results provide a theoretical basis and foundation for the design of explosion suppression systems and the development of explosion suppression powder for aluminum dust.
ADVANCED POWDER TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Shoba Chintada, Siva Prasad Dora, Dorathi Kare, Srinivasa Rao Pujari
Summary: This paper investigates the influence of fabrication method on the damping behavior of pure aluminum. It is found that samples fabricated using powder metallurgy exhibit higher damping capacity and storage modulus.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2022)
Article
Engineering, Chemical
Dongyang Qiu, Zhangqiang Dong, Chong Liu, Lijuan Liu, Yue Chen, Qi Zhao, Chuyuan Huang, Hongming Zhang, Xianfeng Chen
Summary: In this study, a series of experiments were conducted to investigate the suppression effects of inhibitors on the flame propagation of aluminum powders with different morphologies. The results showed that flaky aluminum powder (F-Al) required a larger amount of inhibitor compared to spherical aluminum powder (S-Al). Piperazine pyrophosphate (PPAP) showed stronger chemical effects in inhibiting S-Al, while nano-SiO2 exhibited more significant physical effects in suppressing F-Al.
Article
Multidisciplinary Sciences
Chen Lv, Xinqun Wang, Sheng Xue, Xinxing Xia, Shuang Wang
Summary: Investigations into the deactivation of explosion sensitivity and reduction of flame propagation for aluminium alloy polishing wastes were conducted using ultrafine Al(OH)3 inerting agent. The results showed that the explosion characteristics of high-purity aluminium powder and aluminium alloy polishing waste dust differed significantly, and using parameters related to high-purity aluminium powder for risk assessment in aluminium alloy polishing work sites is not appropriate. Increasing the inerting ratio resulted in slower flame propagation velocity.
Article
Energy & Fuels
Lijuan Liu, Jiashun Hao, Zhangqiang Dong, Xianfeng Chen, Chuyuan Huang
Summary: This study investigates the explosion characteristics of aluminum dust and the performance and mechanism of several powder inhibitors, finding that NaHCO3 has the best inhibitory effect on flame propagation, while CaCO3 and Na2HPO4 have different advantages in suppressing explosion flame temperature and velocity.
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
(2022)
Article
Chemistry, Physical
Elder Soares, Nadege Bouchonneau, Elizeth Alves, Kleber Alves, Oscar Araujo Filho, David Mesguich, Geoffroy Chevallier, Nouhaila Khalile, Christophe Laurent, Claude Estournes
Summary: The reuse of electric arc furnace dust (EAFD) as reinforcement in aluminum matrix composites (AMC) has the potential to improve the mechanical properties of AMCs. AA7075-EAFD composites were produced by spark plasma sintering (SPS), exhibiting homogeneous distribution of reinforcement particles in the matrix and high relative density. The Vickers microhardness of the composites increased with increasing EAFD content.
Article
Green & Sustainable Science & Technology
Bo Liu, Yuyuan Zhang, Yansong Zhang, Enguo Liu, Kaili Xu, Zhenwen Tian, Jinshe Chen, Xiangbao Meng, Ke Yan
Summary: This study verifies the use of modified industrial sludge for composite powder suppressor preparation, with MSU-Al(OH)3 composite powder suppressor showing effective suppression of aluminum dust explosions.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Computer Science, Theory & Methods
K. G. Benerjee, M. K. Gupta
Summary: This study focuses on the fundamental trade-off between storage and repair costs in heterogeneous distributed storage systems with flexible reconstruction degree, nonuniform repair bandwidth, and nonuniform storage capacity. The problem is formulated as a bi-objective optimization linear programing problem and for some systems, the calculated min-cut bound is shown to be tight.
PROBLEMS OF INFORMATION TRANSMISSION
(2021)
Article
Engineering, Electrical & Electronic
Jieying Wang, Hong Zhou, Sami Alghamdi, Jincheng Zhang, Xuefeng Zheng, Yue Hao
Summary: This letter reports on the demonstration of recessed-gate ultra-wide bandgap semiconductor Al0.6Ga0.4N MOSFET with Hf0.5Zr0.5O2 (HZO) ferroelectric charge storage dielectric structure. It achieved a positive threshold voltage and maximum gate swing due to trapped electrons induced by the remnant polarization of HZO in the gate stack. The Al0.6Ga0.4N MOSFET exhibited low on-resistance and high breakdown voltage, indicating its potential for future high-power applications.
IEEE ELECTRON DEVICE LETTERS
(2022)
Article
Engineering, Environmental
Y. F. Khalil
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2016)
Article
Engineering, Chemical
Y. F. Khalil
JOURNAL OF LOSS PREVENTION IN THE PROCESS INDUSTRIES
(2017)
Article
Engineering, Environmental
Y. F. Khalil
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2018)
Article
Chemistry, Physical
Y. F. Khalil
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2014)
Article
Engineering, Environmental
Mahesh Kodoth, Tadahiro Shibutani, Yehia F. Khalil, Atsumi Miyake
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2019)
Article
Engineering, Industrial
Y. F. Khalil
RELIABILITY ENGINEERING & SYSTEM SAFETY
(2019)
Article
Green & Sustainable Science & Technology
Yehia F. Khalil
Summary: This study compared the environmental and human health impacts of H2 production from biodiesel via three glycerol-based technologies. It found that aqueous-phase reforming is more environmentally sustainable than supercritical water reforming and autothermal reforming.
Article
Green & Sustainable Science & Technology
Y. F. Khalil
SUSTAINABLE PRODUCTION AND CONSUMPTION
(2019)
Article
Engineering, Chemical
Chao Chen, Hang Chen, Li Mo, Shenbin Xiao, Changjun Li, Ming Yang, Genserik Reniers
Summary: Fire-induced domino effect is a major threat to hazardous material storage tanks. Previous research neglected the impact of wind load on the thermal buckling behavior of tanks exposed to fire. This paper conducts a numerical simulation to analyze the synergistic effects of fire and wind loads on the thermal post-buckling behavior of storage tanks, considering wind parameters and heat radiation parameters.
JOURNAL OF LOSS PREVENTION IN THE PROCESS INDUSTRIES
(2024)
Article
Engineering, Chemical
Zhang Chu, Liu Lili, Li Wei, Li Beibei, Liu Mingxing
Summary: This study predicts the fatigue life of blasting discs using a combined simulation method and measures the deformation of conventional slotted blasting discs subjected to repeated loading using a high-precision laser scanning method. A relationship model is established between deformation, loading pressure, cycle number, and change in blasting pressure. The results show that the deformation varies linearly with the cycle number and follows a power function relationship with the change in blasting pressure. The deformation can be used to accurately predict the fatigue life of blasting discs.
JOURNAL OF LOSS PREVENTION IN THE PROCESS INDUSTRIES
(2024)
Article
Engineering, Chemical
Shin-Mei Ouyang, Jia-Chi Ye, Wei-Chun Chen, Yu-Jen Chen, Chin-Feng Chen
Summary: This study employed the Taguchi method and analysis of variance to investigate the factors that influence the deterioration of pyrotechnics when stored under different humidity and temperature conditions. Various experimental methods were used to study the microstructure, heat flow, and safety of the pyrotechnics. The results showed that humidity had a significant impact on the pyrotechnics, and controlling humidity could reduce the hazards associated with storing pyrotechnics.
JOURNAL OF LOSS PREVENTION IN THE PROCESS INDUSTRIES
(2024)
Article
Engineering, Chemical
Bei Li, Huiqiang Liu, Heng Gao, Chi-Min Shu, Mingshu Bi
Summary: The moisture content sprayed into the dust layer in industrial sites is a main factor affecting reignition. The study found that moisture has a certain influence on the thermophysical properties of the dust layer, playing an important role in heat transfer and heat absorption processes. The results showed that as the moisture content increased, the thermal conductivity and heat sink density of the sample increased, indicating the need to have a heat sink density higher than the heat increase value to suppress ignition.
JOURNAL OF LOSS PREVENTION IN THE PROCESS INDUSTRIES
(2024)
Article
Engineering, Chemical
Yue Jing, Yong Pan, Fan Yang, Dan Wei, Wenhe Wang
Summary: A comprehensive risk assessment method for the esterification process was proposed in this study. It established a comprehensive evaluation index system and utilized improved Dempster-Shafer evidence theory and cloud model for assessment. The method was validated through case studies and showed consistency with established indexes.
JOURNAL OF LOSS PREVENTION IN THE PROCESS INDUSTRIES
(2024)