TY - JOUR
T1 - An online surface height measurement method for GTAW-based additive manufacturing
AU - Wang, Xiaolong
AU - Wang, Aimin
AU - Li, Yuebo
N1 - Publisher Copyright:
© 2019, International Institute of Welding.
PY - 2020/1/1
Y1 - 2020/1/1
N2 - Wire and arc additive manufacturing (WAAM) process control is critical to forming dimensional accuracy. The online surface height measurement technology is one of the key technologies to achieve closed-loop control of the WAAM surface height. Measurement equipment such as charge-coupled device (CCD) or infrared cameras have difficulties in meeting the requirements for high-frequency online layer height measurement of multi-directional complex paths. In this paper, an online surface height measurement model (OSHMM) based on welding current, voltage, arc length signal, and motion system height displacement data is proposed that can measure the height value of the surface just below the tungsten electrode. The influence of large surface height deviation and the change of wire-feed rate, corner, and inclined edge on measurement accuracy were analysed. The experimental results show that the proposed method can guarantee the accuracy of ± 1.5 mm in the above cases.
AB - Wire and arc additive manufacturing (WAAM) process control is critical to forming dimensional accuracy. The online surface height measurement technology is one of the key technologies to achieve closed-loop control of the WAAM surface height. Measurement equipment such as charge-coupled device (CCD) or infrared cameras have difficulties in meeting the requirements for high-frequency online layer height measurement of multi-directional complex paths. In this paper, an online surface height measurement model (OSHMM) based on welding current, voltage, arc length signal, and motion system height displacement data is proposed that can measure the height value of the surface just below the tungsten electrode. The influence of large surface height deviation and the change of wire-feed rate, corner, and inclined edge on measurement accuracy were analysed. The experimental results show that the proposed method can guarantee the accuracy of ± 1.5 mm in the above cases.
KW - Additive manufacturing
KW - Arc length sensing
KW - GTAW
KW - Online measurement model
UR - https://www.scopus.com/pages/publications/85076735336
U2 - 10.1007/s40194-019-00813-1
DO - 10.1007/s40194-019-00813-1
M3 - Article
AN - SCOPUS:85076735336
SN - 0043-2288
VL - 64
SP - 11
EP - 20
JO - Welding in the World, Le Soudage Dans Le Monde
JF - Welding in the World, Le Soudage Dans Le Monde
IS - 1
ER -