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Experimental validation of the vibration correlation technique robustness to predict buckling of unstiffened composite cylindrical shells. / Franzoni, Felipe; Odermann, Falk; Lanbans, Edgars; Bisagni, Chiara; Andrés Arbelo, Mariano; Degenhardt, Richard.

In: Composite Structures, Vol. 224, 111107, 15.09.2019.

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Franzoni, Felipe ; Odermann, Falk ; Lanbans, Edgars ; Bisagni, Chiara ; Andrés Arbelo, Mariano ; Degenhardt, Richard. / Experimental validation of the vibration correlation technique robustness to predict buckling of unstiffened composite cylindrical shells. In: Composite Structures. 2019 ; Vol. 224.

BibTeX

@article{2442b79b112548a3a35acb70601b29e9,
title = "Experimental validation of the vibration correlation technique robustness to predict buckling of unstiffened composite cylindrical shells",
abstract = "Considering the design of aerospace structures, an experimental campaign is essential for validating the sizing methodology and margins of safety. Particularly for buckling-critical cylindrical shells, the traditional buckling test could lead the specimen to permanent damage. Therefore, the validation of nondestructive experimental procedures for estimating the buckling load of imperfection-sensitive structures from the prebuckling stage is receiving more attention from the industry. In this context, this paper proposes an experimental verification of the robustness of a vibration correlation technique developed for imperfection-sensitive structures. The study comprises three nominally identical unstiffened composite laminated cylindrical shells. Each specimen is tested 10 times for buckling at DLR and, the reproducible results — within a small range of deviation between them — corroborate the equivalence of the cylinders. For the robustness assessment of the vibration correlation technique, two different buckling test facilities are considered. Furthermore, the material properties are recalculated through composite composition rules and the influence of enhanced theoretical buckling loads on the VCT predictions is verified. The experimental campaigns corroborate that the vibration correlation technique provides appropriate estimations representing the influence of the different test facilities; moreover, enhanced theoretical buckling loads can improve the predictions for some of the test cases.",
keywords = "Buckling, Imperfection-sensitive structures, Nondestructive experiments, Unstiffened composite laminated cylindrical shells, Vibration Correlation Technique",
author = "Felipe Franzoni and Falk Odermann and Edgars Lanbans and Chiara Bisagni and {Andr{\'e}s Arbelo}, Mariano and Richard Degenhardt",
year = "2019",
month = sep,
day = "15",
doi = "10.1016/j.compstruct.2019.111107",
language = "English",
volume = "224",
journal = "Composite Structures",
issn = "0263-8223",
publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Experimental validation of the vibration correlation technique robustness to predict buckling of unstiffened composite cylindrical shells

AU - Franzoni, Felipe

AU - Odermann, Falk

AU - Lanbans, Edgars

AU - Bisagni, Chiara

AU - Andrés Arbelo, Mariano

AU - Degenhardt, Richard

PY - 2019/9/15

Y1 - 2019/9/15

N2 - Considering the design of aerospace structures, an experimental campaign is essential for validating the sizing methodology and margins of safety. Particularly for buckling-critical cylindrical shells, the traditional buckling test could lead the specimen to permanent damage. Therefore, the validation of nondestructive experimental procedures for estimating the buckling load of imperfection-sensitive structures from the prebuckling stage is receiving more attention from the industry. In this context, this paper proposes an experimental verification of the robustness of a vibration correlation technique developed for imperfection-sensitive structures. The study comprises three nominally identical unstiffened composite laminated cylindrical shells. Each specimen is tested 10 times for buckling at DLR and, the reproducible results — within a small range of deviation between them — corroborate the equivalence of the cylinders. For the robustness assessment of the vibration correlation technique, two different buckling test facilities are considered. Furthermore, the material properties are recalculated through composite composition rules and the influence of enhanced theoretical buckling loads on the VCT predictions is verified. The experimental campaigns corroborate that the vibration correlation technique provides appropriate estimations representing the influence of the different test facilities; moreover, enhanced theoretical buckling loads can improve the predictions for some of the test cases.

AB - Considering the design of aerospace structures, an experimental campaign is essential for validating the sizing methodology and margins of safety. Particularly for buckling-critical cylindrical shells, the traditional buckling test could lead the specimen to permanent damage. Therefore, the validation of nondestructive experimental procedures for estimating the buckling load of imperfection-sensitive structures from the prebuckling stage is receiving more attention from the industry. In this context, this paper proposes an experimental verification of the robustness of a vibration correlation technique developed for imperfection-sensitive structures. The study comprises three nominally identical unstiffened composite laminated cylindrical shells. Each specimen is tested 10 times for buckling at DLR and, the reproducible results — within a small range of deviation between them — corroborate the equivalence of the cylinders. For the robustness assessment of the vibration correlation technique, two different buckling test facilities are considered. Furthermore, the material properties are recalculated through composite composition rules and the influence of enhanced theoretical buckling loads on the VCT predictions is verified. The experimental campaigns corroborate that the vibration correlation technique provides appropriate estimations representing the influence of the different test facilities; moreover, enhanced theoretical buckling loads can improve the predictions for some of the test cases.

KW - Buckling

KW - Imperfection-sensitive structures

KW - Nondestructive experiments

KW - Unstiffened composite laminated cylindrical shells

KW - Vibration Correlation Technique

UR - http://www.scopus.com/inward/record.url?scp=85066875204&partnerID=8YFLogxK

U2 - 10.1016/j.compstruct.2019.111107

DO - 10.1016/j.compstruct.2019.111107

M3 - Article

AN - SCOPUS:85066875204

VL - 224

JO - Composite Structures

JF - Composite Structures

SN - 0263-8223

M1 - 111107

ER -

ID: 54639726