Friction Stir Welding Panel Flange Interlock Design
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Solution Overview
Problem
Conventional friction stir welding (FSW) processes for joining panel members require significant clamping forces to prevent lateral separation during the welding process, increasing complexity and cost, and are hindered by manufacturing issues that affect the consistency of the weld.
Innovation Solution
The panel structure incorporates a projection and groove configuration on the flanges of adjacent panel members, which resist relative lateral movement, allowing for self-alignment and reduced need for clamping forces during FSW, thereby enhancing the welding process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional friction stir welding processes are used to join panel members, then the welding process can be performed, but significant clamping forces are required to prevent lateral separation during welding
Solution Approach 1:
The projection and groove features are pre-formed on the panel members before welding. These features are designed to automatically engage and resist lateral separation forces during the friction stir welding process, eliminating the need for external clamping forces while maintaining weld joint strength
2Stability of the object's composition
If significant clamping forces are applied during friction stir welding to prevent lateral separation, then panel alignment is maintained, but the complexity and cost of the welding process increase
Solution Approach 1:
The panel members are designed with self-aligning projection and groove features that automatically engage to maintain alignment stability during welding. This self-service mechanism eliminates the need for complex external clamping devices, reducing both device complexity and process cost while maintaining stable panel alignment
3Reliability
If significant clamping forces are used during friction stir welding, then lateral separation is prevented, but manufacturing consistency and weld quality are affected by process complexity
Solution Approach 1:
The projection and groove features create a self-aligning, self-clamping system that automatically maintains consistent panel positioning during welding. This eliminates variability introduced by manual or mechanical clamping operations, improving weld consistency and manufacturing reliability while simplifying the manufacturing process
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration reduces the requirement for lateral clamping forces, improving the consistency and efficiency of the FSW process by maintaining panel alignment and stability during welding, thus simplifying the assembly and reducing costs.
Implementation Method 1
The flange of the first panel member includes a projection and wherein the flange of the second panel member includes a groove. The panel members are connected so that the projection is engaged with the groove to thereby resist relative lateral movement that would separate the panel members.
Implementation Method 2
The pin applies pressure and friction, typically by spinning, on the seam sufficient to cause the metal of the faying surface to plasticize.
Implementation Method 3
The pin applies pressure and friction, typically by spinning, on the seam sufficient to cause the metal of the faying surface to plasticize.
Data Source
AI summary
A panel structure includes panel members that may be connected together using friction stir welding, Each of the panel members includes a first plate, a second plate substantially in parallel to said first plate, and at least one webbing member connecting the first plate and the second plate. The first plate of the first panel member includes a flange positioned in abutment with a flange located on the first plate of the second panel member. The flange of the first panel member includes a projection and the flange of the second panel member includes a groove. The panel members are connected so that the projection is engaged with the groove to thereby resist relative lateral movement that would separate the panel members.