On the influence of low-velocity impact damage on constrained-layer damping in hybrid CFRP-elastomer-metal laminates
Following the principle of constrained-layer damping (CLD), fiber-metal-elastomer laminates (FMELs) offer a high potential for damped lightweight structures, overcoming the undesirable vibration characteristics of conventional lightweight materials. While proven to be versatile and efficient, the da...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2024-05-01
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| Series: | Materials & Design |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127524002557 |
| _version_ | 1797220305172692992 |
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| author | Alexander Jackstadt Wilfried V. Liebig Kay A. Weidenmann Luise Kärger |
| author_facet | Alexander Jackstadt Wilfried V. Liebig Kay A. Weidenmann Luise Kärger |
| author_sort | Alexander Jackstadt |
| collection | DOAJ |
| description | Following the principle of constrained-layer damping (CLD), fiber-metal-elastomer laminates (FMELs) offer a high potential for damped lightweight structures, overcoming the undesirable vibration characteristics of conventional lightweight materials. While proven to be versatile and efficient, the damage-tolerance of such laminates is unexplored. This study for the first time in literature addresses the damage-tolerance of this efficient damping mechanism using a combined experimental and numerical approach. Results of experimental low-velocity impact tests on different configurations of FMELs are presented. In subsequent numerical modal analyses, different types of damage, namely delaminations, intra-ply damage and permanent deformation, are modeled and their influence on the vibrational behavior is investigated. While all types of damage influence the natural frequencies and modal damping ratios with a strong mode dependency, all laminates retain a high amount of modal damping with losses typically not higher than 15%. The results obtained reveal, that CLD is an efficient intrinsic damping measure in FMELs even in the presence of different types of damage. The key contributions of this paper include the thorough experimental characterization of low-velocity impact damages in different configurations of FMELs as well as the numerical assessment of those in frequency-domain simulations. |
| first_indexed | 2024-04-24T12:47:25Z |
| format | Article |
| id | doaj.art-fa367cb45a894611aa72a9cee4b4607a |
| institution | Directory Open Access Journal |
| issn | 0264-1275 |
| language | English |
| last_indexed | 2024-04-24T12:47:25Z |
| publishDate | 2024-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj.art-fa367cb45a894611aa72a9cee4b4607a2024-04-07T04:35:13ZengElsevierMaterials & Design0264-12752024-05-01241112882On the influence of low-velocity impact damage on constrained-layer damping in hybrid CFRP-elastomer-metal laminatesAlexander Jackstadt0Wilfried V. Liebig1Kay A. Weidenmann2Luise Kärger3Karlsruhe Institute of Technology (KIT), Institute of Vehicle System Technology - Lightweight Engineering, Rintheimer Querallee 2, Karlsruhe, 76131, Baden-Württemberg, Germany; Corresponding author.Karlsruhe Institute of Technology (KIT), Institute for Applied Materials - Materials Science and Engineering, Engelbert-Arnold-Straße 4, Karlsruhe, 76131, Baden-Württemberg, GermanyUniversity of Augsburg, Institute of Materials Resource Management - Hybrid Composite Materials, Am Technologiezentrum 8, Augsburg, 86159, Bavaria, GermanyKarlsruhe Institute of Technology (KIT), Institute of Vehicle System Technology - Lightweight Engineering, Rintheimer Querallee 2, Karlsruhe, 76131, Baden-Württemberg, GermanyFollowing the principle of constrained-layer damping (CLD), fiber-metal-elastomer laminates (FMELs) offer a high potential for damped lightweight structures, overcoming the undesirable vibration characteristics of conventional lightweight materials. While proven to be versatile and efficient, the damage-tolerance of such laminates is unexplored. This study for the first time in literature addresses the damage-tolerance of this efficient damping mechanism using a combined experimental and numerical approach. Results of experimental low-velocity impact tests on different configurations of FMELs are presented. In subsequent numerical modal analyses, different types of damage, namely delaminations, intra-ply damage and permanent deformation, are modeled and their influence on the vibrational behavior is investigated. While all types of damage influence the natural frequencies and modal damping ratios with a strong mode dependency, all laminates retain a high amount of modal damping with losses typically not higher than 15%. The results obtained reveal, that CLD is an efficient intrinsic damping measure in FMELs even in the presence of different types of damage. The key contributions of this paper include the thorough experimental characterization of low-velocity impact damages in different configurations of FMELs as well as the numerical assessment of those in frequency-domain simulations.http://www.sciencedirect.com/science/article/pii/S0264127524002557Fiber metal laminatesVibrationDampingViscoelasticityElastomersFinite element simulation |
| spellingShingle | Alexander Jackstadt Wilfried V. Liebig Kay A. Weidenmann Luise Kärger On the influence of low-velocity impact damage on constrained-layer damping in hybrid CFRP-elastomer-metal laminates Materials & Design Fiber metal laminates Vibration Damping Viscoelasticity Elastomers Finite element simulation |
| title | On the influence of low-velocity impact damage on constrained-layer damping in hybrid CFRP-elastomer-metal laminates |
| title_full | On the influence of low-velocity impact damage on constrained-layer damping in hybrid CFRP-elastomer-metal laminates |
| title_fullStr | On the influence of low-velocity impact damage on constrained-layer damping in hybrid CFRP-elastomer-metal laminates |
| title_full_unstemmed | On the influence of low-velocity impact damage on constrained-layer damping in hybrid CFRP-elastomer-metal laminates |
| title_short | On the influence of low-velocity impact damage on constrained-layer damping in hybrid CFRP-elastomer-metal laminates |
| title_sort | on the influence of low velocity impact damage on constrained layer damping in hybrid cfrp elastomer metal laminates |
| topic | Fiber metal laminates Vibration Damping Viscoelasticity Elastomers Finite element simulation |
| url | http://www.sciencedirect.com/science/article/pii/S0264127524002557 |
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