Effect of Tool Geometry on Joint Properties of Friction Stir Welded Al/Cu Bimetallic Lap Joints
Bibliographic record
Abstract
Friction Stir Welding (FSW) is an emerging solid state welding method which is finding increasingly widespread industrial acceptance for joining similar and dissimilar materials. Aluminium to copper bimetallic lap joints have got wide acceptance in the electrical and electronic industries. Commercially, pure Al/Cu bimetallic lap joints are fabricated by the FSW technology using tapered and straight fluted tools. This paper presents valuable information on electromechanical behavior of aluminium to copper bimetallic lap joints required for critical applications such as high current busbars, heavy duty earthing strips, etc. The experiments are conducted based on Design of Experiments (DoE) to reduce the number of trials. It is observed that better joint properties are obtained in the joints fabricated using straight fluted tool and the joint resistance is negligible, as in manufactured condition.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.002 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".