Investigation of the relationship between vibration emission and in-use vibration for electrical tools
Bibliographic record
Abstract
The repeatability and reproducibility of the BS EN 60745 series of test codes for tools that are considered to represent the greatest health risk from hand-arm vibration exposure such as hammers, angle grinders, saws and drills, is described. Triaxial hand-arm vibration measurements were made at the prescribed hand locations on each tool using three single axis piezoelectric accelerometers bolted to a mounting block. Data for hammers in a chiseling or breaking application were obtained. The results show that all HSL data displayed are triaxial. and that field data include both grinding and cutting operations. Operating mode of the tool, such as drill II is capable of drilling metal, dry diamond core drilling, and impact drilling concrete, producing emissions of 2.2-15.9m/s 2 . Orientation of the tool during use such as hammers, produced about 30% more measured vibration when drilling vertically compared to drilling horizontally.
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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 | 0.001 |
| 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".