| 聚酰亚胺电容式湿敏元件的研制 |
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| 引用本文： | 周海文 吴孙桃. 聚酰亚胺电容式湿敏元件的研制[J]. 厦门大学学报(自然科学版), 1997, 36(4): 554-557 |
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| 作者姓名： | 周海文 吴孙桃 |
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| 作者单位： | 厦门大学物理学系 |
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| 摘 要： | 在硅基片上，采用集成电路工艺制作成有上下电极结构的以聚酰亚胺介质薄膜作为感湿膜的电容式湿度敏感元件，上电极有六种不同设计．对所研制的敏感元件进行感湿特性、温度特性、响应特性的测量，并分析讨论了测量结果．
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| 关 键 词： | 聚酰亚胺，电容式，湿敏元件 |
Punching Shear Strength of Steel Fiber Reinfoced Concrete Slabs |
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| Lin Xujian Zheng Zuoqiao. Punching Shear Strength of Steel Fiber Reinfoced Concrete Slabs[J]. Journal of Xiamen University(Natural Science), 1997, 36(4): 554-557 |
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| Authors: | Lin Xujian Zheng Zuoqiao |
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| Abstract: | The strength characteristics of steel fiber reinforced concrete square slabs subjected to punching shear are investigated.The steel fiber not only enhanced the ultimate punching shear strength, but also transformed brittle type punching shear failure into gradual and ductile failure.A formula for calculating the punching strength is derived by using plastic method.The comparison shows good agreement between the theoretical values and the test results. |
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| Keywords: | Punching shear strength Steel fiber reinforced concrete slab |
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