A New Multiaxial Specimen for Determining the Dynamic Properties of Adhesive Joints
| Autor: | Robert Nevière, Andrei Constantinescu, Daniel Weisz-Patrault, A. Janin, W. Albouy, M. Stackler |
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| Přispěvatelé: | Laboratoire de mécanique des solides (LMS), École polytechnique (X)-MINES ParisTech - École nationale supérieure des mines de Paris-Centre National de la Recherche Scientifique (CNRS), Safran Composites, Safran Group, Centre de Recherche du Bouchet, SNECMA Herakles, École polytechnique (X)-MINES ParisTech - École nationale supérieure des mines de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Digital image correlation
Materials science business.industry Mechanical Engineering Stress–strain curve Aerospace Engineering 02 engineering and technology Structural engineering Split-Hopkinson pressure bar [PHYS.MECA.MSMECA]Physics [physics]/Mechanics [physics]/Materials and structures in mechanics [physics.class-ph] 021001 nanoscience & nanotechnology Characterization (materials science) Stress (mechanics) 020303 mechanical engineering & transports 0203 mechanical engineering Mechanics of Materials Solid mechanics [PHYS.MECA.SOLID]Physics [physics]/Mechanics [physics]/Solid mechanics [physics.class-ph] Adhesive 0210 nano-technology business Joint (geology) ComputingMilieux_MISCELLANEOUS |
| Zdroj: | Experimental Mechanics Experimental Mechanics, Society for Experimental Mechanics, 2018, ⟨10.1007/s11340-018-0402-7⟩ |
| ISSN: | 0014-4851 |
| Popis: | Adhesive joints are increasingly employed for bonding critical parts of industrial structures. Therefore, adhesive joints become a key element in design, and their mechanical characterization is of the utmost importance. Significant advancement has been realized for their characterization under quasi-static loadings; however characterization techniques are rather limited for dynamic loadings. Indeed, due to the complex paths of waves through structures, existing dynamic characterization techniques will not characterize only the adhesive joint, but instead will characterize the complete assembly containing the joint and the adherents. Moreover, multiaxiality control of the loading on the adhesive joint is difficult to achieve. This paper proposes an innovative experimental technique for the characterization of adhesive joints under dynamic multiaxial loadings. The experimental method relies on three main components: i) a conventional split Hopkinson pressure bar (SHPB) apparatus, ii) a novel specimen, denoted as DODECA, which enables testing of three distinct multiaxial loadings using the same method and iii) local strain and stress measurements performed by digital image correlation (DIC). The paper describes all steps of the experimental procedure, including the underlying preparation of the specimen and the measuring methods. The stress and strain in the adhesive joint are estimated directly from the experimental data both during loading and at the failure point. Finally, the dynamic material behavior of the adhesive joint is identified from the data. |
| Databáze: | OpenAIRE |
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