Barely visible impact damage identificationin a 3D core sandwich structure

• Autorzy: Sikdar S. , Ostachowicz W. , Kudela P. , Radzieński M.
• Języki publikacji: EN

Abstrakty

EN

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

Słowa kluczowe

EN

3D core sandwich structure; dispersion curve; barely visible impact damage; guided wave

PL

struktura rdzeniówki 3D; krzywa dyspersyjna; ledwo widoczne obrażenia od uderzenia; kierowana fala

• Wydawca: Instytut Podstawowych Problemów Techniki PAN
• Czasopismo: Computer Assisted Methods in Engineering and Science
• Rocznik: 2017
• Tom: Vol. 24, no. 4
• Strony: 259--268
• Opis fizyczny: Bibliogr. 29 poz., rys., wykr.

Twórcy

autor

Sikdar S.

• Institute of Fluid-Flow Machinery Polish Academy of Sciences Fiszera 14, 80-231 Gdansk, Poland

autor

Ostachowicz W.

• Institute of Fluid-Flow Machinery Polish Academy of Sciences Fiszera 14, 80-231 Gdansk, Poland

autor

Kudela P.

• Institute of Fluid-Flow Machinery Polish Academy of Sciences Fiszera 14, 80-231 Gdansk, Poland

autor

Radzieński M.

• Institute of Fluid-Flow Machinery Polish Academy of Sciences Fiszera 14, 80-231 Gdansk, Poland

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