Barely visible impact damage identification in a 3D core sandwich structure

Shirsendu Sikdar; Wiesław Ostachowicz; Paweł Kudela; Maciej Radzieński

Barely visible impact damage identification in a 3D core sandwich structure

Shirsendu Sikdar, Wiesław Ostachowicz, Paweł Kudela, Maciej Radzieński

Research output: Contribution to journal › Article › peer-review

Abstract

3D core sandwich structure (3DCSS) is a popular lightweight construction material in the automotive, aerospace and marine industries. However, barely visible low-speed impact-damage (BVLID) may occur in the 3DCSS due to foreign-object-impact that can significantly reduce the load-bearing capacity of the structure. This paper presents a guided wave (GW) propagation based BVLID identification technique for the 3DCSS. A global-matrix formulation based semi-analytical model is applied to generate the dispersion curve for the GW propagation in the 3DCSS. It is observed that the GW propagation in the 3DCSS is multi-modal in nature. Finite-element numerical simulation of GW propagation in the 3DCSS is carried out in Abaqus. A significant increment in the primary antisymmetric mode is noticed due to the presence of BVLID region in the structure. Experiments are then conducted on a 3DCSS sample to validate the simulation results. There is a good agreement between the simulation and experimental results in all the cases.

Original language	English
Pages (from-to)	259-268
Number of pages	10
Journal	Computer Assisted Methods in Engineering and Science
Volume	24
Issue number	4
Publication status	Published - 1 Oct 2017
Externally published	Yes

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title = "Barely visible impact damage identification in a 3D core sandwich structure",

abstract = "3D core sandwich structure (3DCSS) is a popular lightweight construction material in the automotive, aerospace and marine industries. However, barely visible low-speed impact-damage (BVLID) may occur in the 3DCSS due to foreign-object-impact that can significantly reduce the load-bearing capacity of the structure. This paper presents a guided wave (GW) propagation based BVLID identification technique for the 3DCSS. A global-matrix formulation based semi-analytical model is applied to generate the dispersion curve for the GW propagation in the 3DCSS. It is observed that the GW propagation in the 3DCSS is multi-modal in nature. Finite-element numerical simulation of GW propagation in the 3DCSS is carried out in Abaqus. A significant increment in the primary antisymmetric mode is noticed due to the presence of BVLID region in the structure. Experiments are then conducted on a 3DCSS sample to validate the simulation results. There is a good agreement between the simulation and experimental results in all the cases.",

keywords = "3D core sandwich structure, Barely visible impact damage, Dispersion curve, Guided wave",

author = "Shirsendu Sikdar and Wies{\l}aw Ostachowicz and Pawe{\l} Kudela and Maciej Radzie{\'n}ski",

note = "Funding Information: This research work was funded by the Polish National Science Centre (NCN) under Grant Agreement Number – UMO-2016/23/N/ST8/01326. Publisher Copyright: Copyright {\textcopyright} 2017 by Institute of Fundamental Technological Research, Polish Academy of Sciences",

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AU - Sikdar, Shirsendu

AU - Ostachowicz, Wiesław

AU - Kudela, Paweł

AU - Radzieński, Maciej

N1 - Funding Information: This research work was funded by the Polish National Science Centre (NCN) under Grant Agreement Number – UMO-2016/23/N/ST8/01326. Publisher Copyright: Copyright © 2017 by Institute of Fundamental Technological Research, Polish Academy of Sciences

PY - 2017/10/1

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N2 - 3D core sandwich structure (3DCSS) is a popular lightweight construction material in the automotive, aerospace and marine industries. However, barely visible low-speed impact-damage (BVLID) may occur in the 3DCSS due to foreign-object-impact that can significantly reduce the load-bearing capacity of the structure. This paper presents a guided wave (GW) propagation based BVLID identification technique for the 3DCSS. A global-matrix formulation based semi-analytical model is applied to generate the dispersion curve for the GW propagation in the 3DCSS. It is observed that the GW propagation in the 3DCSS is multi-modal in nature. Finite-element numerical simulation of GW propagation in the 3DCSS is carried out in Abaqus. A significant increment in the primary antisymmetric mode is noticed due to the presence of BVLID region in the structure. Experiments are then conducted on a 3DCSS sample to validate the simulation results. There is a good agreement between the simulation and experimental results in all the cases.

AB - 3D core sandwich structure (3DCSS) is a popular lightweight construction material in the automotive, aerospace and marine industries. However, barely visible low-speed impact-damage (BVLID) may occur in the 3DCSS due to foreign-object-impact that can significantly reduce the load-bearing capacity of the structure. This paper presents a guided wave (GW) propagation based BVLID identification technique for the 3DCSS. A global-matrix formulation based semi-analytical model is applied to generate the dispersion curve for the GW propagation in the 3DCSS. It is observed that the GW propagation in the 3DCSS is multi-modal in nature. Finite-element numerical simulation of GW propagation in the 3DCSS is carried out in Abaqus. A significant increment in the primary antisymmetric mode is noticed due to the presence of BVLID region in the structure. Experiments are then conducted on a 3DCSS sample to validate the simulation results. There is a good agreement between the simulation and experimental results in all the cases.

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KW - Barely visible impact damage

KW - Dispersion curve

KW - Guided wave

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SN - 2299-3649

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Barely visible impact damage identification in a 3D core sandwich structure

Abstract

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