High-axial-resolution distributed lateral displacement measurement based on differential pulse-width pair BOTDA
Bibliographic record
Abstract
We report for the first time to the best of our knowledge a distributed lateral displacement sensor through measuring high-spatial-resolution axial strain based on differential pulse-width pair Brillouin optical time-domain analysis. With the assumption of a sine-shape displacement caused by a small surface deformation, the relationship between the axial strain and the lateral displacement of a flat plate is established, based on which a distributed lateral displacement measurement is realized. In experiment, a periodic lateral displacement of a flat plate is constructed through a ripple spring by applying side pressure on them, and the axial strain measurement with a 2-cm spatial resolution is performed by using a differential pulse pair of 8/8.2 ns. Using two types of ripple springs, measurements of lateral displacements with periods of 30 and 32.5 mm are demonstrated with a maximum displacement of 0.43 mm and a minimum measurable displacement of ~40 μm.
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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 | 0.001 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 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".