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Record W4391464856 · doi:10.1002/9781119815426.ch6

Assessment of Dents on Pipelines

2024· other· en· W4391464856 on OpenAlex

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

affAt least one author lists a Canadian institution in the pinned OpenAlex snapshot.

Bibliographic record

Venuenot available
Typeother
Languageen
FieldEngineering
TopicStructural Integrity and Reliability Analysis
Canadian institutionsUniversity of Calgary
Fundersnot available
KeywordsPipeline transportForensic engineeringComputer sciencePetroleum engineeringEngineeringMechanical engineering

Abstract

fetched live from OpenAlex

In addition to corrosion defects, dents are a common type of mechanical damage on pipelines, compromising the integrity and causing pipeline failures. Dents introduce a permanent plastic deformation on pipe body, resulting in significant stress and strain concentrations. While dents, especially constrained dents, do not decrease burst pressure of the pipelines, cracks usually initiate at the dents, especially under pressure fluctuations. Assessment of dents on pipelines is essential for determination of pipeline FFS. The chapter reviews the existing standards and codes used for dent assessment, describing the assessment principles, identifying limitations of the available methods, and imparting the improved strain determination for dent assessment. Various failure criteria for pipelines containing dents are summarized and their applicability is discussed. A new criterion based on modified strain determination at the dent is proposed. In addition, the combinations of a dent with other types of defects such as gouges, cracks, and corrosion are analyzed in terms of their impact on decreased burst strength of the pipelines and accurate assessment of the pipeline performance condition. In particular, the fatigue failure of dented pipelines is assessed with various levels of methods included in the standards. FE-based modeling for dent assessment on pipelines is introduced with detailed description of the modeling processes.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

Full frame distilled prediction

Teacher imitation

Not 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.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesInsufficient payload (model declined to judge)
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Not applicable · Consensus signal: Not applicable
GenreCandidate signal: Other · Consensus signal: Other
Teacher disagreement score0.029
Threshold uncertainty score0.993

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0070.000

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.

Opus teacher head0.011
GPT teacher head0.286
Teacher spread0.275 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it