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Deflection Creep of Pultruded Composite Sheet Piling

2004· article· en· W2015751231 on OpenAlex
Yixin Shao, Jayasiri Shanmugam

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.
fundA Canadian funder is recorded on the work.

Bibliographic record

VenueJournal of Composites for Construction · 2004
Typearticle
Languageen
FieldEngineering
TopicMechanical Behavior of Composites
Canadian institutionsMcGill University
FundersNatural Sciences and Engineering Research Council of Canada
KeywordsCreepDeflection (physics)Materials scienceViscoelasticityComposite materialPultrusionComposite numberUltimate tensile strengthShear (geology)Structural engineeringPhysicsEngineeringClassical mechanics

Abstract

fetched live from OpenAlex

The time-dependent creep behavior of pultruded composite sheet piling was investigated. Two panels were tested under equally spaced third point bending at a span to depth ratio of 48; one was subject to a constant load of 50% of Pmax and the other 25% of Pmax. Tensile creep, shear creep, and deflection creep were recorded over 1 year. The time-dependent tensile and shear moduli were obtained using the simplified Findley’s model, and the deflection creeps were predicted based on both Findley’s model and Timoshenko’s equation. It was found that the time exponents in Findley’s model for tensile, shear and deflection creep were of close value and could therefore be averaged to provide a viscoelastic material constant for the composite sheet piling. With the averaged viscoelastic parameters, Timoshenko’s equation resembled the Findley’s power law model for the prediction of deflection creep and agreed well with experimental results up to 1 year. Over 30 years, it is estimated that the viscoelastic tensile and shear moduli will be reduced to 68 and 36% of their respective initial values and the creep deflection will reach 50% of its static deflection.

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 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 score0.123
Threshold uncertainty score0.749

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 head0.012
GPT teacher head0.239
Teacher spread0.227 · 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