Theoretical analysis of weld pool behavior in the pulsed current Gas Tungsten Arc Welding (GTAW) process

Journal Article · Mon Feb 01 00:00:00 EST 1988 · Journal of Heat Transfer (Transactions of the ASME (American Society of Mechanical Engineers), Series C); (United States)

DOI:https://doi.org/10.1115/1.3250447· OSTI ID:5952994

Tsai, C L ^[1]; Hou, C A ^[2]

---

1. Ohio State Univ., Columbus (United States)
2. Howard Univ., Washington, DC (United States)

A general three-dimensional, closed-form welding heat-flow solution, which is capable of analyzing thermal behavior of the weldment in its transient state and/or under time-dependent power change during welding, is presented. The analytical model utilizes the finite heat source theory with a Gaussian distribution and also considers the effects of finite plate thickness. The numerical values of the solution are calculated using the computational schemes on a minicomputer. In this paper the welding parameters of the pulsed current Gas Tungsten Arc Welding (GTAW) were studied using the solution. Two sets of pulsation parameters were analyzed and their sensitivity to the heat input control were evaluated.

• OSTI ID: 5952994
• Journal Information: Journal of Heat Transfer (Transactions of the ASME (American Society of Mechanical Engineers), Series C); (United States), Vol. 110:1; ISSN 0022-1481
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
GAS TUNGSTEN-ARC WELDING
THERMAL ANALYSIS
MATHEMATICAL MODELS
NUMERICAL SOLUTION
THERMODYNAMIC PROPERTIES
THREE-DIMENSIONAL CALCULATIONS
TRANSIENTS
ARC WELDING
FABRICATION
GAS METAL-ARC WELDING
JOINING
PHYSICAL PROPERTIES
WELDING
360101* - Metals & Alloys- Preparation & Fabrication