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Record W2182341186

EXTRACTION OF CRACKS FROM CONCRETE BEAM IMAGES

2012· article· en· W2182341186 on OpenAlexaff
Ivan Detchev, Ayman Habib

Bibliographic record

Venuenot available
Typearticle
Languageen
FieldEngineering
TopicStructural Health Monitoring Techniques
Canadian institutionsUniversity of Calgary
Fundersnot available
KeywordsServiceability (structure)Structural engineeringStructural health monitoringTrussDynamic loadingBeam (structure)EngineeringStrain gaugeComputer scienceStatically indeterminate
DOInot available

Abstract

fetched live from OpenAlex

Structural health monitoring of civil infrastructure systems is important in terms of both their safety and serviceability. The former refers to estimating the maximum loading capacity during the design stages of a building project, and the latter means performing regularly-scheduled maintenance of an already existing structure. Traditionally, fine-scale monitoring of structural components such as beams and trusses has been done with geotechnical gauge instrumentation, which only measures deflections in one direction, and do not allow for a threedimensional deformation estimation. Moreover, monitoring the appearance of cracks specifically, for example in support columns, foundations or walls, has been done mostly manually with a permanent marker directly on the specimen. This paper will present the advantages of using vision techniques for the purposes of flagging the appearance and tracking the propagation of cracks in structural materials. Basically, using a remote sensing method for imagebased measurements allows for detecting cracks without having the need of accessing the tested elements, and also a permanent visual record is established for each observed epoch in time. The paper shows some of the data and preliminary results from an experiment where a concrete beam with a polymer support sheet was subjected to both static and dynamic loading conditions by a hydraulic actuator in a structures lab. The static loading was used to simulate the maximum loading capacity at a particular instance, while the dynamic loading (also known as fatigue testing) was used to simulate the typical use of the beams over longer periods of time.

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.

How this classification was reachedexpand

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 categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Bench or experimental · Consensus signal: Bench or experimental
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.158
Threshold uncertainty score0.235

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)0.0000.000

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 head0.017
GPT teacher head0.298
Teacher spread0.281 · 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

Classification

machine, unvalidated

Machine predicted; a candidate call from one teacher head, not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designBench or experimental
Domainnot available
GenreEmpirical

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".

Quick stats

Citations2
Published2012
Admission routes1
Has abstractyes

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