| 光纤Sagnac传感器对材料频率特性的实验研究 |
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| 引用本文： | 邓虎,吴纪元,徐贵鹏,徐莎莎.光纤Sagnac传感器对材料频率特性的实验研究[J].大学物理实验,2011,24(4):9-13. |
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| 作者姓名： | 邓虎 吴纪元 徐贵鹏 徐莎莎 |
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| 作者单位： | 1. 哈尔滨工程大学,黑龙江哈尔滨,150001
2. 东北师范大学,吉林长春,130024 |
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| 摘 要： | 不同的材料由于物理性质不同,在断裂时会产生不尽相同的声发射信号。光纤声发射传感器以其频带宽,抗电磁干扰,灵敏度高,体积小等优点在声发射（AE）信号探测方面有着广泛的应用前景。本文采用光纤Sangac传感器,对不同材料断裂过程的声发射信号进行检测,通过快速傅立叶变换分析其频谱。实验得知同一种材料断裂的声发射信号具有相同的...
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| 关 键 词： | 声发射信号 Sagnac传感器 材料断裂 频率特征 |
An Experimental Study on Materials'Frequency Characteristics by Optical Fiber Sagnac Sensor |
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| DENG Hu,WU Ji-yuan,XU Gui-peng,XU Sha-sha.An Experimental Study on Materials'Frequency Characteristics by Optical Fiber Sagnac Sensor[J].Physical Experiment of College,2011,24(4):9-13. |
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| Authors: | DENG Hu WU Ji-yuan XU Gui-peng XU Sha-sha |
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| Institution: | DENG Hu1,WU Ji-yuan2,XU Gui-peng1,XU Sha-sha1(1.Harbin Engineering University,Harbin 150001,2.Northeast Normal University,Changchun 130024) |
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| Abstract: | Due to the different physical properties,materials fracture produces different acoustic emission signal.Optical fiber acoustic emission sensor has many advantages,such as wide frequency band,immune electromagnetic interference,high sensitivity,small in size etc,which has wide application prospect in acoustic emission(AE) signal detection.In this paper,through analyzing the fast Fourier transform frequency spectrum and the experiments,AE signal of breaking process for different materials is detected by using... |
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| Keywords: | AE signal materials fracture optical fiber Sangac sensor frequency characteristics |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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