| 高频窄脉冲超声聚焦传感器的工艺及应用 | |
| 连红运 ; 吴定允 ; 刘新 ; Lian Hongyun ; Wu Dingyun ; Liu Xin | |
| 2010-05-13 ; 2010-05-13 | |
| 关键词 | 双金属转子复合层 聚焦传感器 扩散焊检测 composite layer of bimetal rotor focused transducer diffusion welding quality test TG441.7 |
| 其他题名 | Technology and application of high frequency short pulse ultrasonic focused transducer |
| 中文摘要 | 在双金属转子复合层全自动超声特征成像检测系统中,因柱塞孔孔径小、孔壁薄,针对此类扩散焊检测,为了提高超声成像系统的分辨率和信号的信噪比,研制了用于检测双金属转子复合层扩散焊连接质量的超声传感器。本文提出了用声程相等的理论来设计超声传感器的聚焦,利用耦合剂和工件声速的不同,把内孔铜层作为传感器的声聚焦透镜,用光学方法对传感器的聚焦声场进行了验证。制作的传感器中心频率为10MHz,波列只有2个周期,在实际的检测中可分辨0.5mm当量的缺陷。; In auto ultrasonic feature imaging system used for testing bimetal rotor clad layer,the aperture bimetal rotor hole is small,and its thickness is thin.To improve the imaging resolution and signal-to-noise ratio of the test signal,an ultrasonic transducer used for testing bimetal clad layer was studied and developed.The theory of sound path length is used to design the focusing of the transducer.As the sound velocities in coupling liquid and workpiece are different,the copper layer of inner hole is used as ultrasonic focus lens.At the same time,the simulation experiment on focusing sound field of ultrasonic transducer was carried out using optics method.The central frequency of the transducer is 10 MHz,and it has only two periods of wave trains.The minimum resolution of the flaw for bimetal clad layer is 0.5mm. |
| 语种 | 中文 ; 中文 |
| 内容类型 | 期刊论文 |
| 源URL | [http://hdl.handle.net/123456789/30888]  |
| 专题 | 清华大学 |
| 推荐引用方式 GB/T 7714 | 连红运,吴定允,刘新,等. 高频窄脉冲超声聚焦传感器的工艺及应用[J],2010, 2010. |
| APA | 连红运,吴定允,刘新,Lian Hongyun,Wu Dingyun,&Liu Xin.(2010).高频窄脉冲超声聚焦传感器的工艺及应用.. |
| MLA | 连红运,et al."高频窄脉冲超声聚焦传感器的工艺及应用".(2010). |
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