| 钢轨铝热焊焊缝的超声相控阵检测技术 |
| |
| 引用本文： | 邓丹,卢超,陈和坤,陈智发,胡婷萍.钢轨铝热焊焊缝的超声相控阵检测技术[J].无损检测,2011(12):77-80,85. |
| |
| 作者姓名： | 邓丹 卢超 陈和坤 陈智发 胡婷萍 |
| |
| 作者单位： | 南昌航空大学无损检测技术教育部重点实验室;汕头市超声仪器研究所有限公司 |
| |
| 基金项目： | 国家自然科学基金资助项目(10964008);汕头市超声仪器研究所有限公司合作项目资助(HB1007028);江西省“仪器科学与技术”研究生教育创新基地项目支持 |
| |
| 摘 要： | 常规超声方法检测钢轨铝热焊焊缝时，不同区域焊缝的检测需更换不同K值的探头，检测速度慢且由于光斑和灰斑等缺陷反射很弱，很容易造成漏检。超声相控阵声束具有可偏转和聚焦的特点，使得声波反射能量足够大且不用频繁更换探头。通过对含已知机械加工缺陷和未知自然缺陷的钢轨铝热焊焊缝试样进行检测，验证了超声相控阵方法检测铝热焊焊缝的可行性和有效性。通过与常规超声检测方法进行对比，得出超声相控阵检测钢轨铝热焊焊缝具有速度快、效率高、重现性好和检测结果直观等优点。
|
| 关 键 词： | 钢轨 铝热焊 超声相控阵 |
Research on the Technology of Ultrasonic Phased Array for Rail Joint of Aluminum-Thermic Welding |
| |
| DENG Dan,LU Chao,CHEN He-Kun,CHEN Zhi-Fa,HU Ting-Ping.Research on the Technology of Ultrasonic Phased Array for Rail Joint of Aluminum-Thermic Welding[J].Nondestructive Testing,2011(12):77-80,85. |
| |
| Authors: | DENG Dan LU Chao CHEN He-Kun CHEN Zhi-Fa HU Ting-Ping |
| |
| Affiliation: | 1.Key Lab of Nondestructive Testing(Ministry of Education),Nanchang Hangkong University,Nanchang 330063,China; 2.Shantou Institute of Ultrasonic Instruments Co Ltd,Shantou 515041,China) |
| |
| Abstract: | While applying conventional ultrasound tests method to detect the rail joint of aluminum-thermic welding,for different detecting regions,it is needed to use different K property of probes,also,it is hard to detect the flaws of light spot and gray spot for the reason of signal reflecting,so utilizing focus and deflect of ultrasonic pliased array to overcome conventional ultrasound tests method inadequacy.Through detecting rail joint of aluminum-thermic welding with nature and machining flaws,the effectiveness of ultrasonic phased array method was validated as compared with results of conventional ultrasound test.The experiment results showed the ultrasonic phased array inspection for rail joint of aluminum-thermic had fast detection speed and high efficiency;the result could be shown visually and reproducible. |
| |
| Keywords: | Rail Aluminum-thermic welding Ultrasonic phased array |
| 本文献已被 CNKI 维普 等数据库收录！ |
|
