Continuous monitoring of an intentionally-manufactured crack using an automated welding and in-process inspection system
Continuous monitoring of an intentionally-manufactured crack using an automated welding and in-process inspection system
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DOI：
10.1016/j.matdes.2020.108655
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发表时间：
2020-06-01
影响因子：
8.4
通讯作者：
Gachagan, Anthony
中科院分区：
文献类型：
--
作者：
Javadi, Yashar;Mohseni, Ehsan;Gachagan, Anthony
本文采用了自动焊接熔敷与实时机器人无损评价（NDE）相结合的方法。为了验证过程中检测系统的性能，将故意嵌入的缺陷（钨棒）引入多道焊缝。还制造了部分填充的凹槽（阶梯）样品，并进行了超声测试，以校准对逐步沉积的所有七层焊缝实施的实时检测。对钨棒的沉积位置进行了实时无损检测。然后使用相同的机器人检测系统连续监测有意制造的裂纹20 h。裂纹在焊接结束后22 min开始萌生，并在随后的1.5 h内迅速扩展。裂纹生长大约在2小时后停止，并且在接下来的18小时监测中没有检测到反射信号的显著变化。(C)2020年，任作家。爱思唯尔有限公司出版
Automated weld deposition coupled with the real-time robotic Non-Destructive Evaluation (NDE) is used in this paper. For performance verification of the in-process inspection system, an intentionally embedded defect, a tungsten rod, is introduced into the multi-pass weld. A partially-filled groove (staircase) sample is also manufactured and ultrasonically tested to calibrate the real-time inspection implemented on all seven layers of the weld which are deposited progressively. The tungsten rod is successfully detected in the real-time NDE of the deposited position. The same robotic inspection system was then used to continuously monitor an intentionally-manufactured crack for 20 h. The crack was initiated 22 min after the weld ended and it grew quickly within the next 1.5 h. The crack growth stopped approximately after 2 h and no considerable change in the reflection signal was detected for the next 18 h of monitoring. (C) 2020 The Authors. Published by Elsevier Ltd.