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Wang, Chenglong,Zhang, Yan,Zhang, Dalin,Lan, Zhike,Tian, Wenxi,Su, Guanghui,Qiu, Suizheng Korean Nuclear Society 2021 Nuclear Engineering and Technology Vol.53 No.7
One-dimensional oxygen transport relation is indispensable to study the oxygen distribution in the LBE-cooled system with an oxygen control device. In this paper, a numerical research is carried out to study the oxygen transport characteristics in a gas-phase oxygen control device, including the static case and dynamic case. The model of static oxygen control is based on the two-phase VOF model and the results agree well with the theoretical expectation. The model of dynamic oxygen control is simplified and the gas-liquid interface is treated as a free surface boundary with a constant oxygen concentration. The influences of the inlet and interface oxygen concentration, mass flow rate, temperature, and the inlet pipe location on the mass transfer characteristics are discussed. Based on the results, an oxygen mass transport relation considering the temperature dependence and velocity dependence separately is obtained. The relation can be used in a one-dimensional system analysis code to predict the oxygen provided by the oxygen control device, which is an important part of the integral oxygen mass transfer models.
Xiayun Zhang,Ting-Ting Li,Hao-Kai Peng,Zhike Wang,Junli Huo,Ching-Wen Lou,Jia-Horng Lin 한국섬유공학회 2020 Fibers and polymers Vol.21 No.7
This study explores the influences of needle punching and a shear-thickening fluid (STF) on the stab resistancesandwich-structured composites made of nylon nonwoven and aramid fabrics. Needle punching and different treatments ofaramid fabric are conducted to obtain the composites. The effects of needle punching and different treatments of aramidfabrics on the sandwich-structured composites were examined using quasi-static puncture resistance, quasi-static stabresistance, dynamic puncture resistance, and bursting property tests. Results show that needle punching and incorporation ofSTF positively influence the stab resistance of the composites. This study provides an innovative method to reduce thenumber of lamination layers and decrease the weight.
Xiayun Zhang,Ting-Ting Li,Ting-Ting Li,Hao-Kai Peng,Zhike Wang,Jia-Horng Lin,Ching-Wen Lou 한국섬유공학회 2022 Fibers and polymers Vol.23 No.8
This paper fabricated two types stab-resistant nonwoven fabric and the stab/puncture resistance of nonwoven werestudied. Nylon fibers, Kevlar fibers, and two types of low-melting point fibers-low-melting point polyester (LPET) fibers andpolypropylene(PP) fibers-are made into PP/nylon/Kevlar and LPET/nylon/Kevlar nonwoven fabrics. Needle punching andthermal bonding technology are used to made stab-resistant nonwoven fabric, thereby examining the influence of lowmeltingpoint fibers content (i.e. LPET or PP fibers) and bonding mode with other fibers on the stab/puncture resistanceproperty of nonwoven fabrics. The quasi-static stab resistance and bursting properties were compared between nonwovenfabrics and nonwoven fabric of PET filament reinforced nonwovens. The test results show that PET filament reinforcementhas a positive influence on the mechanical properties of composite nonwoven fabrics, especially puncture/stab resistanceperformance.