A Transparent ASME B31.8-Based Strain Assessment Method Using 3D Measurement of Dent Morphology
Why this work is in the frame
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Bibliographic record
Abstract
Abstract This paper presents a comprehensive methodology to evaluate the geometric strain of pipeline in a dented area caused by mechanical damage. This methodology was formulated based on the approach recommended by ASME B31.8 and built the transparency of the entire process of dent strain assessment using three-dimensional (3D) measurement of dent morphology reported by the Caliper tools from in-line inspection (i.e., Caliper data). The 2D Fourier Transform in conjunction with band rejection filtering method was used to filter the signal noise and smooth the 3D morphology of dent. The cubic spline was utilized to characterize the discrete 2D longitudinal and circumferential profiles for curvature and arch length calculations, which were used to evaluate the bending strain and membrane strain, respectively. The effective strain was then calculated using the method recommended by ASME B31.8. To demonstrate the application of the methodology, a tool with user-friendly interface and powerful visualization and reporting functions was developed using the methodologies reported in this paper. The reported methodology enables development of dent strain assessment tool and benefit pipeline operators to facilitate dent integrity management program.
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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 | 0.001 | 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) | 0.001 | 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 it