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<title cf:type="text"><![CDATA[Editorial department of the Journal of National University of Defense Technology -->海军工程大学]]></title>
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<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Analysis of electric field protection effect and cathodic protection performance of pump-jet propulsion submarine]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202304021]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[In order to explore the protective effect of pump-jet propulsion submarine under the two typical working modes of electric field protection and impressed current cathodic protection, the boundary element method was used to establish the corrosion-related electrostatic field model of the submarine. The influence of fairing and guide vane on the electric field protection and cathodic protection performance was simulated and analyzed. The results show that compared with the traditional propulsion mode, the peak-to-peak value of electric field of pump-jet propulsion submarine in seawater is reduced by about 38%, and it can achieve better electric field protection effect with only about 50% current value. In addition, no matter whether the whole boat coating is intact or not in the cathodic protection process, the peak electric field at the pump-jet propulsion device is reduced to a certain extent, indicating that the pump-jet propulsion device has better electric field stealth performance. However, in the process of impressed current cathodic protection for pump-jet propulsion submarines, good protection effect can only be achieved at the hull and the major axis. The impeller and guide vane inside the fairing are difficult to reach the protection potential, which is in an under-protection state, so local corrosion protection still needs to be strengthened.]]></description>
<pubDate>2023/7/20 16:28:59</pubDate>
<category><![CDATA[海军工程大学]]></category>
<author><![CDATA[LIU Yi, TANG Weihao, WANG Xiangjun, WANG Shichuan, HU Yucheng]]></author>
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<atom:name>LIU Yi, TANG Weihao, WANG Xiangjun, WANG Shichuan, HU Yucheng</atom:name>
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<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Fatigue test and reliability analysis of FRC/steel embedded T-joint]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202304022]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[In order to study the fatigue characteristics of FRC/steel embedded T-joint, the vacuum forming process (VARTM) and stitching technology were used to make T-joint, and the tension-tension fatigue test was carried out on the joint using the Letry fatigue testing machine. According to the fatigue test results, the initial damage characteristics and damage evolution of T-joints under tension-tension fatigue load were studied; based on the two-parameter Weibull distribution model, fatigue reliability analysis of T-joint connection joints was carried out, and the distribution law of fatigue life of joints under different stress levels was fitted. The fatigue reliability function of joints under different stress levels was given, as well as the stress/life double logarithmic curve relationship (<i>R</i>-ln<i>S</i>-ln<i>N</i> curve) of joints under specified reliability levels.The results show that ln ln[1/R(<i>N</i>)] has a good linear relationship with ln<i>N</i>, and the fatigue life of T-joints follows Weibull distribution; the double logarithmic equation of fatigue life reliability establishes the relationship between reliability, fatigue life and fatigue stress, which can guide the fatigue reliability design and engineering application of joints.]]></description>
<pubDate>2023/7/20 16:28:59</pubDate>
<category><![CDATA[海军工程大学]]></category>
<author><![CDATA[CHEN Guotao, MEI Zhiyuan, ZHU Yi]]></author>
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<atom:name>CHEN Guotao, MEI Zhiyuan, ZHU Yi</atom:name>
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