Reduction of vibrations generated by an impact wrench
Bibliographic record
Abstract
The design and the verification of an anti vibration device (AVD) meant to reduce the hand-arm vibration (HAV) transmitted by an impact wrench are described. The tool studied is an impact wrench, the Ingersoll-Rand 3940 P2 Ti, is initially characterized using different operators, postures, air pressures, grip, and push forces. The tool vibration measured both in the field and on a purposely designed workbench show that the non weighted vibration spectra possess components up to 2 kHz. The interaction between the tool and the operator was modeled with the lumped parameter scheme and the characteristics of the velocity generators are identified under the hypothesis of purely inertial tool impedance and with operator impedances. Given the nonlinear behavior of the elastic elements, vibration transmissibility is found to strongly depend on the static forces that the operator exerts on the handles.
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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 | 0.000 | 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 | 0.000 |
| 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".