连续纤维增强热塑性复合材料热变形性能研究进展

连续纤维增强热塑性复合材料(CFRTP)是国际上复合材料的研究热点。介绍了连续纤维增强热塑性复合材料的热变形方式及原理,对比分析了CFRTP热变形实验和数值模拟方法,探讨了影响CFRTP热变形及制品质量的因素,并对CFRTP热成型研究方向和发展前景进行了展望

一种三通结构件及制造方法

本发明公开了一种三通结构件及制造方法。其中，所述三通结构件包括：一外管、一位于外管内的内管、以及用于对内管和外管进行固定密封的法兰接头，外管由对称的第一半管和第二半管构成，各半管均设有翼板，翼板上设有用于通过螺栓进行固定的螺栓孔，第一半管和第二半管通过翼板融合区结合为一体结构，其中第一半管的翼板和第二半管的翼板融合固化在一起，法兰接头设有限位槽、限位螺孔、密封槽和密封圈，以及螺栓通过限位螺孔和螺栓孔将外管和法兰接头进行固定。本发明采用两个对称半管形成外管，通过法兰接头对内管和外管进行固定密封，提高了产品成品率

RTM工艺充模过程模拟研究进展

主要介绍了RTM工艺树脂充模过程的流动模式、充模过程模拟的流动模型和模拟方法。讨论了不同模拟情况下所需的合理假设、边界条件的设置以及采用的不同数值计算方法。同时,介绍了目前基于数值计算的RTM仿真软件,提出了RTM充模仿真研究的未来发展趋势

JUNO Sensitivity on Proton Decay p→νˉK+p\to \bar\nu K^+ Searches

The Jiangmen Underground Neutrino Observatory (JUNO) is a large liquid scintillator detector designed to explore many topics in fundamental physics. In this paper, the potential on searching for proton decay in $p\to \bar\nu K^+$ mode with JUNO is investigated.The kaon and its decay particles feature a clear three-fold coincidence signature that results in a high efficiency for identification. Moreover, the excellent energy resolution of JUNO permits to suppress the sizable background caused by other delayed signals. Based on these advantages, the detection efficiency for the proton decay via $p\to \bar\nu K^+$ is 36.9% with a background level of 0.2 events after 10 years of data taking. The estimated sensitivity based on 200 kton-years exposure is $9.6 \times 10^{33}$ years, competitive with the current best limits on the proton lifetime in this channel

JUNO sensitivity on proton decay p → ν K + searches*

The Jiangmen Underground Neutrino Observatory (JUNO) is a large liquid scintillator detector designed to explore many topics in fundamental physics. In this study, the potential of searching for proton decay in the $p\to \bar{\nu} K^+$ mode with JUNO is investigated. The kaon and its decay particles feature a clear three-fold coincidence signature that results in a high efficiency for identification. Moreover, the excellent energy resolution of JUNO permits suppression of the sizable background caused by other delayed signals. Based on these advantages, the detection efficiency for the proton decay via $p\to \bar{\nu} K^+$ is 36.9% ± 4.9% with a background level of $0.2\pm 0.05({\rm syst})\pm$$0.2({\rm stat})$ events after 10 years of data collection. The estimated sensitivity based on 200 kton-years of exposure is $9.6 \times 10^{33}$ years, which is competitive with the current best limits on the proton lifetime in this channel and complements the use of different detection technologies