High heat flux tests of the WENDELSTEIN 7-X pre-series target elements Experimental evaluation of the thermo-mechanical behaviour
High heat flux tests of the WENDELSTEIN 7-X pre-series target elements Experimental evaluation of the thermo-mechanical behaviour
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DOI：
10.1016/j.fusengdes.2007.02.003
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发表时间：
2007-10
影响因子：
1.7
通讯作者：
H. Greuner;B. Boeswirth;J. Boscary;A. Plankensteiner;B. Schedler
中科院分区：
文献类型：
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作者：
H. Greuner;B. Boeswirth;J. Boscary;A. Plankensteiner;B. Schedler
Wendelstein 7-X前系列靶元的高热流密度(HHF)测试是制造工艺鉴定中不可或缺的一步。在开始系列生产之前，Plansee SE制造了一套20个全尺寸的预系列元件，以验证材料和制造技术。HHF测试是在Gladis离子束测试设备中进行的。所有主动水冷元件在10 mW/m2(10-15s脉冲宽度)下进行了大约100次循环试验。几个元件的循环次数更高(高达1000)，热负荷高达24兆瓦/平方米。在HHF测试期间，在几个瓷砖的边缘观察到热点，表明氟氯化碳存在局部粘结问题。对HHF载荷下的热力行为进行了评估，并与有限元预测结果进行了比较。测量的温度和应变证实了所选择的有限元方法。这使得组件优化可以实现W7-X偏滤器目标元件的成功批量生产。
The high heat flux (HHF) testing of WENDELSTEIN 7-X pre-series target elements is an indispensable step in the qualification of the manufacturing process. A set of 20 full scale pre-series elements was manufactured by PLANSEE SE to validate the materials and manufacturing technologies prior to the start of the series production. The HHF tests were performed in the ion beam test facility GLADIS. All actively water-cooled elements were tested for about 100 cycles at 10MW/m2(10–15s pulse duration). Several elements were loaded with even higher cycle numbers (up to 1000) and heat loads up to 24MW/m2. Hot spots were, observed at the edges of several tiles during the HHF tests indicating local bonding problems of the CFC. The thermo-mechanical behaviour under HHF loading has been evaluated and compared to the FEM predictions. The measured temperatures and strains confirm the chosen FEM approach. This allows a component optimisation to achieve a successful series production of the W7-X divertor target elements.