3D study of the vibrational behaviour of lithic flint blades
Rattachement africain : gb, jp, dk. Niveau de preuve : code pays fourni par la source.
Le résumé fourni par la source
Stone Age sites are well known to often contain many lithic flint blades and flakes, which may provide important information about early European Stone Age cultures and their environment. Understanding the mechanical behaviour of lithic flint blades represents an important problem for scientists in general and archaeologists in particular. In this study, the structural behaviour of lithic flint blades is studied. Ten specimens with different geometric shapes (tilted, curved, with bumping surfaces) were studied and tested. Their natural frequencies, damping ratios, and mode shapes (that is how the specimen deforms under any external excitation) are estimated using two models: an analytical model that accounts for the specimen's curvature and a 3D Finite Element (FE) method. Advanced experimental methods, including ultrasound techniques, were used to measure the mechanical properties of the specimens. The experimental set-up was built around a laser vibrometer that measured the specimen's displacement. The model predictions were compared with the experimental data to validate their effectiveness. A good agreement is observed between the models and the real data. It is particularly observed that despite their complicated geometries, the specimens still follow a structured pattern in their dynamic response. The presented study supports the use of acoustic methods as an effective tool to characterize and detect submerged prehistoric materials. This work contributes to the dynamic characterization of submerged Stone Age materials.
Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.
Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- 3D study of the vibrational behaviour of lithic flint blades
- Date Crossref
- 01/12/2023
- Éditeur
- Elsevier BV
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
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University of Bedfordshire pays non établi dans la noticeUniversité ou école supérieure
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University of Tsukuba Institute of Library pays non établi dans la noticeUniversité ou école supérieure
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University of Bristol Department of Mechanical Engineering pays non établi dans la noticeUniversité ou école supérieure
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University of Copenhagen Department of Geosciences and Natural Resource Management pays non établi dans la noticeUniversité ou école supérieure
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Geocenter Denmark pays non établi dans la noticeInstitution
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School of Computer Science and Technology Institute for Research in Applicable Computing (IRAC) pays non établi dans la noticeUniversité ou école supérieure
University of Bedfordshire, Institute of Library — University of Tsukuba et Department of Mechanical Engineering — University of Bristol, avec 3 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.