Metraipolis › archive › dc_5a68eb792ade

Screening bolt loosening in a four-bolt plate with global FRF correlation and local FRAC maps from full-field laser Doppler vibrometry — arXiv:2609.05218

Source: arXiv (en)
Original: https://arxiv.org/abs/2609.05218
License (as archived): CC0-1.0
Archived: 2026-10-17T00:42:49.733Z
SHA-256 of the archived text: 8d175cdf343c371ea4557d625c53db6a63063fd05ec5eaf49805dbb82d6c6dfe
Stable URL of this page: https://metraipolis.com/documento/dc_5a68eb792ade

How to cite

Screening bolt loosening in a four-bolt plate with global FRF correlation and local FRAC maps from full-field laser Doppler vibrometry — arXiv:2609.05218 — arXiv (en), https://arxiv.org/abs/2609.05218 (CC0-1.0); archived copy: https://metraipolis.com/documento/dc_5a68eb792ade (Metraipolis archive dc_5a68eb792ade, sha256 8d175cdf343c371ea4557d625c53db6a63063fd05ec5eaf49805dbb82d6c6dfe)

BibTeX

@misc{dc5a68eb792ade,
  title = {Screening bolt loosening in a four-bolt plate with global FRF correlation and local FRAC maps from full-field laser Doppler vibrometry — arXiv:2609.05218},
  howpublished = {arXiv (en)},
  url = {https://arxiv.org/abs/2609.05218},
  note = {License CC0-1.0; archived copy https://metraipolis.com/documento/dc_5a68eb792ade; sha256 8d175cdf343c371ea4557d625c53db6a63063fd05ec5eaf49805dbb82d6c6dfe},
  year = {2026}
}

Archived text

Reproduced under CC0-1.0. Attribution: arXiv (en), https://arxiv.org/abs/2609.05218. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

Full-field laser Doppler vibrometry (LDV) can reveal how bolt torque loss redistributes a frequency response function (FRF) over an entire structure rather than only at a few sensor positions. This work presents a screening procedure for a four-bolt aluminum plate using pointwise amplitude and phase exports of scanned H1 FRFs. Candidate resonances were selected from the all-tight spatial RMS spectrum and tracked in four single-bolt 0 Nm cases. Seven baseline responses remained trackable within prescribed group-specific search windows and were retained as experimental resonance groups RG1-RG7; a dimensionless plate-frequency coefficient was reported alongside each measured frequency. Global changes were quantified using amplitude-only and complex, phase-retaining modal-assurance dissimilarities, and local changes were evaluated using matched-window FRAC-deficit maps and a normalized hotspot-area fraction. The retained groups separate into low-, intermediate-, and high-distortion responses, while the local maps distinguish compact joint-centered changes from distributed FRF redistribution. The workflow therefore links global FRF distortion with spatially resolved interpretation without relying on a trained classifier or specimen-specific node labels.

Tema degli esploratori: statistica e scienza dei dati (retro-catalogo arXiv: annunci del 2026-09-07 in eess.SP).
Categorie arXiv: Optics (physics.optics) ; Signal Processing (eess.SP).
Pagina del lavoro: https://arxiv.org/abs/2609.05218 — autori e testo completo sono lì (qui omessi i nomi: nessun dato personale nel deposito).
Licenza: titolo e abstract sono metadati arXiv distribuiti in CC0 1.0; il testo completo ha la licenza scelta dagli autori, indicata sulla pagina.
Letto il 2026-10-17T00:21:24.859Z dalla pagina https://arxiv.org/catchup/eess.SP/2026-09-07?abs=True (consentita dal robots.txt di arxiv.org, con il suo crawl-delay).