...Na Lv; Jiyong Zhong; Jifeng Wang; Shanben Chen Purpose – Surface forming control of welding bead is the fundamental study in automated welding. Considering that the vision sensing system cannot extract the height information of weld pool in pulsed GTAW process, so this paper designed a set...

...Na Lv; Yanling Xu; Zhifen Zhang; Jifeng Wang; Bo Chen; Shanben Chen Purpose The purpose of this paper is to study the relationship between arc sound signal and arc height through arc sound features of GTAW welding, which is aimed at laying foundation work for monitoring the welding penetration...

...Jifeng Wang; Huigu Yang; Yaozhou Qian; Jianquan Zeng Purpose The purpose of this paper is to analyze and show how to avoid the interference in infrared (IR) temperature field measurement during welding. Design/methodology/approach First, the hardware used in this experiment is described...

...Hongbo Ma; Shanchun Wei; Tao Lin; Shanben Chen; Laiping Li Purpose The purpose of this paper is to develop a kind of low cost measuring system based on binocular vision sensor to detect both the weld pool geometry and root gap simultaneously for robot welding process. Design/methodology...

...Shanchun Wei; Hongbo Ma; Tao Lin; Shanben Chen Purpose Recognition and guidance of initial welding position (IWP) is one of the most important steps of automatic welding process, also a key technology of autonomous welding process. The purpose of this paper is to advance an improved Harris...

...J.F. Wang; B. Chen; H.B. Chen; S.B. Chen Purpose The purpose of this paper is to analyze the characteristics of sound during gas tungsten argon welding (GTAW), which is very important to effectively monitor the welding quality in future by using the information extracted from sound. Design...

...Shen‐Jen “Tony” Hsieh; Meng Kong; Shanben Chen Purpose The purpose of this paper is to describe work aimed to control the Al alloy welding penetration through the passive vision for welding robot. Design/methodology/approach First a passive vision system was established. The system can capture...

...John Billingsley; John Mortimer Purpose To describe how Jaguar Cars in the UK is making use of a robot‐based intelligent adaptive metal inert gas (MIG) welding process incorporating laser diode measurement of the gap in the joint between the aluminium C‐pillars and the aluminium roof structure...

...Jeffrey Noruk New weld inspection methods superceding visual inspection are presented. Laser‐based sensor technology contained in a handheld scanner for pre‐ and post‐weld inspection enables measurement of joint preparations or finished welds and validation of their geometry against pre‐set limits...

...James Quirk Describes the application of an ultrasonic sensing system for the non‐destructive inspection of welds as an alternative to X‐rays. Replacing radiography with ultrasound not only allows faster, more economical inspections but also eliminates the health and safety risks associated...

... Once set-up, the system is"transparent" to the operator. In other words he does nothing between assemblies other than start the welding machine. As long as the seam is positioned within the laser stripe at the start, the system will maintain the torch centrally and at the correct height over...

... © MCB UP Limited 1998 --> Inspection Welding New NDT manipulator is hot stuff! Keywords Inspection,Welding A unique new automated NDT inspection manipulator will speed up maintenance times at Sizewell A power station by allowing welding, heat treatment...

...Don Braggins Outlines the development over a period of 27 years of a novel sensor that uses the off‐axis rotation of a lens to provide a circular scan of distance data. Applications include weld line tracking, waterjet cutting and many others requiring the measurement of curved and angled surfaces...

... © MCB UP Limited 1998 --> Lasers Meta Technology Welding 100 per cent growth on target for second year running Keywords Lasers,Meta Technology, Welding In 1997, Meta Technology forecast for 1997/98 a 100 per cent increase in sales of its range of Tracker Laser...

...Teodiano Freire Bastos; L. Calderón; J.M. Martín; R. Ceres Evaluates the applicability of ultrasonic sensors in a welding environment and reports on experimental measurements carried out with a sensory head containing ultrasonic transducers with different frequencies. Analyses the effects...

...Bojko Vodanovic Describes a rugged, high speed structured laser light triangulation‐based vision‐type sensor, with real‐time image processor, along with some actual applications. High speed is essential for a low dynamic error at the laser welding speed (10m/minute). Square butt joint, frequently...