Stress Singularity Analysis of a Viscoelastic/Viscoelastic Bonded Joint
Bibliographic record
Abstract
Measurement of bi-material interface bonding strengths has drawn considerable attentions because damages or failures are most likely to occur at the interfaces in many advanced materials and structures. However, the measurement of the interface bonding strength is hindered by the presence of the stress singularity at the interface corner. In order to determine the actual bonding strength of bi-material interface, the determination/elimination of the stress singularity is thus very crucial. This paper presents an analytical model for the determination of the stress singularity and its elimination for a viscoelastic/viscoelastic bonded joint. Two viscoelastic materials with different material properties are considered for this study. Each material is modelled as a standard linear solid and the properties of both materials are considered as time-dependent. The elastic-viscoelastic corresponding principle is used to find the analytical solution for the subjected viscoelastic/viscoelastic bonded joint from the available analytical solution for an elastic/elastic bonded joint. The developed solution is applied for a bonded joint between Polyvinyl-chloride (PVC) and Epoxy materials. It is found that the stress singularity at the interface corner may increase with time due to the viscoelasticity of the materials. Finite element analyses have also been carried out to verify the results obtained from the analytical solution and the two results are in good agreement.
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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 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| 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 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".