Computerized radiographic weld penetration control with feedback on weld pool depression

Journal Article · Sun Oct 01 00:00:00 EDT 1989 · Materials Evaluation; (USA)

OSTI ID:6731704

Guu, A C; Rokhlin, S I ^[1]

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1. Ohio State Univ., Dept. of Welding Engineering, Columbus, OH (US)

Welding pool depression depends on plasma pressure and heat input to the pool and therefore is related to weld penetration. On the basis of information on pool depression received from radiographic images in real time during welding, the possibility of using automated weld penetration control to maintain the required weld penetration has been studied. The experimental system developed includes an arc welding unit, a welding manipulator, a real-time x-ray system, an image processing unit, and a system controller. By analyzing the radiographic information together with metallographs of the appropriate weld cross section, the depth of the liquid metal in the pool has been determined at different levels of current and weld penetration.

• OSTI ID: 6731704
• Journal Information: Materials Evaluation; (USA), Vol. 47:10; ISSN 0025-5327
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
42 ENGINEERING
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
WELDED JOINTS
X-RAY RADIOGRAPHY
WELDING MACHINES
COMPUTERIZED CONTROL SYSTEMS
INSPECTION
WELDING
CONTROL SYSTEMS
FABRICATION
INDUSTRIAL RADIOGRAPHY
JOINING
JOINTS
360101* - Metals & Alloys- Preparation & Fabrication
420500 - Engineering- Materials Testing
990200 - Mathematics & Computers