An atmospheric-pressure argon plasma jet with screw ring-ring electrodes in surface dielectric barrier discharge is generated by a sinusoidal excitation voltage at 8 kHz. The discharge characteristics, such as rotatio...An atmospheric-pressure argon plasma jet with screw ring-ring electrodes in surface dielectric barrier discharge is generated by a sinusoidal excitation voltage at 8 kHz. The discharge characteristics, such as rotational and vibrational temperature of nitrogen, electronic excitation temperature, oxygen atomic density, nitrogen molecular density, and average electron density, are estimated. It is found that the rotational temperature of nitrogen is in the range of 352 ～ 392 K by comparing the simulated spectrum with the measured spectrum at the C3Πu → B3Πg （△ν = 2） band transition, the electronic excitation temperature is found to be in the range of 3127 ～ 3230 K by using the Boltzmann plot method, the oxygen atomic and nitrogen molecular density are of the order of magnitude of 1016 cm-3 by the actinometry method, and the average electron density is of the order of magnitude of 1012 cm-3 by the energy balance equation. Besides, the effective power, conduction, and displacement current are measured during the discharge.展开更多
为研究消费电子行业超薄高强钢化盖板玻璃的动态和静态破裂应力,采用两组0.4 mm厚度玻璃式样,分别进行钢球冲击和环压环(ring on ring,ROR)实验,且均结合了数值仿真对比分析,实测和仿真的结果吻合度较高。得到了两组玻璃非边缘区域的动...为研究消费电子行业超薄高强钢化盖板玻璃的动态和静态破裂应力,采用两组0.4 mm厚度玻璃式样,分别进行钢球冲击和环压环(ring on ring,ROR)实验,且均结合了数值仿真对比分析,实测和仿真的结果吻合度较高。得到了两组玻璃非边缘区域的动态和静态破裂应力数据,二者的威布尔分布曲线形状参数β值相似度高,分别为13.95和13.64,前者的B50破裂应力是后者的1.65倍。利用最小二乘法,根据两组实验的破裂应力和应力速率拟合出了相关的破裂参数n值,为19.2,为实际工程仿真中玻璃动态破裂应力阈值的研究提供了实验和仿真模型参考。展开更多
基金supported by National Natural Science Foundation of China(No.51177007)Ministry of Science and Technology of China(No.2009AA064101-4)
文摘An atmospheric-pressure argon plasma jet with screw ring-ring electrodes in surface dielectric barrier discharge is generated by a sinusoidal excitation voltage at 8 kHz. The discharge characteristics, such as rotational and vibrational temperature of nitrogen, electronic excitation temperature, oxygen atomic density, nitrogen molecular density, and average electron density, are estimated. It is found that the rotational temperature of nitrogen is in the range of 352 ～ 392 K by comparing the simulated spectrum with the measured spectrum at the C3Πu → B3Πg （△ν = 2） band transition, the electronic excitation temperature is found to be in the range of 3127 ～ 3230 K by using the Boltzmann plot method, the oxygen atomic and nitrogen molecular density are of the order of magnitude of 1016 cm-3 by the actinometry method, and the average electron density is of the order of magnitude of 1012 cm-3 by the energy balance equation. Besides, the effective power, conduction, and displacement current are measured during the discharge.
文摘为研究消费电子行业超薄高强钢化盖板玻璃的动态和静态破裂应力,采用两组0.4 mm厚度玻璃式样,分别进行钢球冲击和环压环(ring on ring,ROR)实验,且均结合了数值仿真对比分析,实测和仿真的结果吻合度较高。得到了两组玻璃非边缘区域的动态和静态破裂应力数据,二者的威布尔分布曲线形状参数β值相似度高,分别为13.95和13.64,前者的B50破裂应力是后者的1.65倍。利用最小二乘法,根据两组实验的破裂应力和应力速率拟合出了相关的破裂参数n值,为19.2,为实际工程仿真中玻璃动态破裂应力阈值的研究提供了实验和仿真模型参考。
