Measurement of the Dynamic and Liquid Weld Pool Under Glaring Arc Light with Femtometre Accuracy
文献类型：会议论文
| 作者 | Yang YM(杨永明) ; Wang ZZ(王振洲)
|
| 出版日期 | 2017 |
| 会议日期 | JUN 23-26, 2017 |
| 会议地点 | Shanghai, PEOPLES R CHINA |
| 关键词 | Measurement Structured light Conformal mapping Single shot Weld pool |
| 页码 | 111-119 |
| 英文摘要 | Accurate measurement of the 3D shape of the dynamic weld pool is of great importance for on-line welding process control and off-line welding phenomenon study. However, it remains challenging due to the following reasons. Firstly, the weld pool is dynamic and liquid with extremely high temperature, which requires a nondestructive single-shot measurement technique. Secondly, the specular surface and the ambient strong arc light prevent direct imaging by cameras. Here, we present a structured light technique that yields closed form solutions with femtometre accuracy to measure the dynamic shape of the weld pool produced by gas tungsten arc welding (GTAW). This technique makes use of the band-pass filter and the high penetrability of lasers to overcome the glaring arc light. The sampling points on the weld pool surface are measured by computing the intersections of the projected laser rays and the corresponding reflected laser rays analytically. A conformal mapping transforms the physical world into the virtual world to make the measurement free of optics aberrations. As a result, the achieved measurement accuracy is up to 10(-13) mm, which is significantly superior to state of art methods. |
| 产权排序 | 1 |
| 会议录 | TRANSACTIONS ON INTELLIGENT WELDING MANUFACTURING, VOL I, NO. 1 2017
 |
| 会议录出版者 | SPRINGER-VERLAG SINGAPORE PTE LTD |
| 会议录出版地 | SINGAPORE |
| 语种 | 英语 |
| ISSN号 | 2520-8519 |
| ISBN号 | 978-981-10-5355-9; 978-981-10-5354-2 |
| WOS记录号 | WOS:000451078400010 |
| 源URL | [http://ir.sia.cn/handle/173321/23657]  |
| 专题 | 沈阳自动化研究所_机器人学研究室 |
| 通讯作者 | Wang ZZ(王振洲) |
| 作者单位 | Shenyang Institute of Automation, Chinese Academy of Science |
| 推荐引用方式 GB/T 7714 | Yang YM,Wang ZZ. Measurement of the Dynamic and Liquid Weld Pool Under Glaring Arc Light with Femtometre Accuracy[C]. 见:. Shanghai, PEOPLES R CHINA. JUN 23-26, 2017. |
入库方式： OAI收割
来源：沈阳自动化研究所
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