Shape-memory alloy mechanical contact devices
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.
Bibliographic record
Abstract
The effect of current cycling on the performance of bolted aluminum-to-aluminum connections employing different mechanical contract devices has been studied. Current cycling conditions and different initial contact loads (0.7 and 2 kN) have been used. The devices considered were lock-spring, conventional disc-spring (Belleville) and shape-memory alloy disc-spring washers. The results show that the mechanical and electrical integrity of the connections is strongly affected by the joint configuration, which differs according to the mechanical device used. The CuAlMn shape-memory alloy disc-spring washer was found to significantly lower and stabilize the contact resistance in a bolted joint even when incorrectly installed (low initial contact force). The observed effect is explained in terms of a strong temperature dependence of the shape-memory alloy mechanical properties (spring rate) over a narrow temperature range. The mechanism responsible for this dependence is reversible martensite-austenite phase transformation which enables the shape-memory alloy to act as a sensor and a force actuator. This is of significant practical importance since field experience has shown that very often joint failures are linked to the incorrect installation of the joints.
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 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 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.072 | 0.012 |
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 it