ANALISIS GETARAN DAN KETIDAKSEJAJARAN PADA POMPA SENTRIFUGAL: IDENTIFIKASI KERUSAKAN PADA RUBBER COUPLING
Bibliographic record
Abstract
Damage to the rubber coupling of a centrifugal pump can cause serious disruptions such as increased vibration, misalignment, and decreased operational efficiency. This study aims to analyze the main causes of rubber coupling damage and identify mechanical factors that affect its lifespan. The methods used include visual inspection, alignment measurement using the rim and face method, and vibration analysis with a vibration analyzer installed at strategic points of the pump system. The results showed that the rubber coupling was damaged due to a combination of radial misalignment of +0.25 mm and angular misalignment of -0.08 mm, exceeding the standard tolerance limit. Vibration data also showed a significant increase to more than 6.5 mm/s RMS, especially in the horizontal direction, indicating dynamic disturbances such as shaft imbalance and misalignment. Vibration spectra showed a predominance of frequencies around 1500-1600 CPM with high amplitude, reinforcing the evidence of mechanical failure due to repetitive dynamic loads. Intervention through improved alignment was shown to drastically reduce vibration values and restore system stability.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.002 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.002 | 0.001 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.002 | 0.001 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.004 | 0.001 |
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 source (direct Gemma or distilled Codex), 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".