The aim of this work is the study of the adhesion integrity of metallic Single Lap Joints (SLJs) through the assessment of the MUL2 CODE, software developed by the MUL2 Research Group - Department of Mechanical and Aerospace Engineering of Politecnico di Torino. The MUL2 CODE is implemented through the Carrera Unified Formulation (CUF) for 2D structures based on Hierarchical Legendre Expansion (HLE) polynomials. An efficient method for the Structural Health Monitoring (SHM) of bonded joints is simulated and verified by CUF approach, in order to reduce the computational cost of analyses: by using transient excitations (toneburst signals), the structural health of damaged SLJ can be numerically evaluated. The interaction mechanism between the waves traveling through the investigated specimens is numerically modeled with a simple Finite Elements (FE) model and it is solved via MUL2 CODE and commercial software Ansys Workbench, respectively. Experimental campaigns data are compared with CUF and Ansys results demonstrating the consistence of the MUL2 formulation that is computationally simpler, but very efficient for the joint analysis. The presented and discussed CUF application is able to quantify with a high accuracy the debonding extension in the damaged SLJ, simply tuning the excitation frequency of the SHM technique.

Carrera Unified Formulation (CUF) for the analysis of disbonds in Single Lap Joints (SLJ) / Nicassio, F.; Cinefra, M.; Scarselli, G.; Filippi, M.; Pagani, A.; Carrera, E.. - 12047:(2022). (Intervento presentato al convegno Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XVI 2022 nel 2022) [10.1117/12.2616542].

Carrera Unified Formulation (CUF) for the analysis of disbonds in Single Lap Joints (SLJ)

Cinefra M.;Scarselli G.;
2022-01-01

Abstract

The aim of this work is the study of the adhesion integrity of metallic Single Lap Joints (SLJs) through the assessment of the MUL2 CODE, software developed by the MUL2 Research Group - Department of Mechanical and Aerospace Engineering of Politecnico di Torino. The MUL2 CODE is implemented through the Carrera Unified Formulation (CUF) for 2D structures based on Hierarchical Legendre Expansion (HLE) polynomials. An efficient method for the Structural Health Monitoring (SHM) of bonded joints is simulated and verified by CUF approach, in order to reduce the computational cost of analyses: by using transient excitations (toneburst signals), the structural health of damaged SLJ can be numerically evaluated. The interaction mechanism between the waves traveling through the investigated specimens is numerically modeled with a simple Finite Elements (FE) model and it is solved via MUL2 CODE and commercial software Ansys Workbench, respectively. Experimental campaigns data are compared with CUF and Ansys results demonstrating the consistence of the MUL2 formulation that is computationally simpler, but very efficient for the joint analysis. The presented and discussed CUF application is able to quantify with a high accuracy the debonding extension in the damaged SLJ, simply tuning the excitation frequency of the SHM technique.
2022
Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XVI 2022
9781510649699
9781510649705
Carrera Unified Formulation (CUF) for the analysis of disbonds in Single Lap Joints (SLJ) / Nicassio, F.; Cinefra, M.; Scarselli, G.; Filippi, M.; Pagani, A.; Carrera, E.. - 12047:(2022). (Intervento presentato al convegno Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XVI 2022 nel 2022) [10.1117/12.2616542].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11589/262513
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