Piezoelectric Actuators/Sensors for wavelet Based Failure Detection in Flexible Structures
Bibliographic record
Abstract
This paper presents an analytical and experimental survey of the methods for in-service, in real-time damage detection of bolt connection. The experimental setup is a flexible aluminum beam with one end clamped on a frame and the other end jointed on frame by a bolt. To simulate connection damage, the stress relaxing on the bolt is achieved by the action of loose rotation that is quantified by rotation angle. A piezoelectric actuator produces the exciting signal. The dynamic response of flexible beam system is monitored by a piezoelectric transducer. The voltage output signal is processed offline by a PC and in real-time by an embedded digital signal processor (DSP) chip. Wavelet analysis method investigated in this paper is used to identify early change of beam connection state so as to prevent connection failure. The wavelet analysis results are compared to frequency response analysis (FR) methods in order to identify
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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) | 0.001 | 0.000 |
| Bibliometrics | 0.002 | 0.002 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.000 | 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".