Probabilistic investigation of piezoelectric application for reliability enhancement of composite laminates under edge delamination

Delbariani-Nejad，Ali1,2; Xiong，Yi1,2

2024-12-01

10.1016/j.compstruct.2024.118528

Composite Structures   影响因子和分区

0263-8223

In this research a novel probabilistic numerical approach is developed to investigate the effectiveness of piezoelectric (PZT) materials to enhance the reliability of composite laminates under edge delamination onset (EDO). To achieve this, finite element (FE) modeling is employed as an implicit limit state function (LSF) based on a quadratic failure criterion and the concept of critical length. An interactive interface that integrates FE analysis and reliability analysis is then established to execute both processes simultaneously until the convergence condition of the reliability index is satisfied. To validate current FE analysis, the interlaminar stress peaks, and resulting edge delamination probability obtained in this study are compared with available data. Subsequently, the probability of EDO in angle-ply composite laminates under applied longitudinal strain and an applied electric field on the PZT layer is assessed using both the first-order reliability method (FORM) and the second-order reliability method (SORM). The Monte Carlo simulation (MCS) is employed to verify the numerical results. Findings reveal that employment of PZT reduces EDO probability. Moreover, as the applied voltage increases, the critical strain required for definitive EDO also increases, and the positive influence of PZT on enhancing reliability becomes more pronounced, particularly with increased thickness under higher applied strain.

Delamination Interlaminar stresses Piezoelectric Probabilistic analysis Probability of failure PZT

EI

英语

第一 ; 通讯

MATERIALS SCIENCE

2-s2.0-85202778142

Scopus

1.Shenzhen Key Laboratory of Intelligent Manufacturing for Continuous Carbon Fibre Reinforced Composites,Southern University of Science and Technology,Shenzhen,Guangdong,518055,China
2.School of System Design and Intelligent Manufacturing,Southern University of Science and Technology,Shenzhen,Guangdong,518055,China

Delbariani-Nejad，Ali,Xiong，Yi. Probabilistic investigation of piezoelectric application for reliability enhancement of composite laminates under edge delamination[J]. Composite Structures,2024,349-350.

Delbariani-Nejad，Ali,&Xiong，Yi.(2024).Probabilistic investigation of piezoelectric application for reliability enhancement of composite laminates under edge delamination.Composite Structures,349-350.

Delbariani-Nejad，Ali,et al."Probabilistic investigation of piezoelectric application for reliability enhancement of composite laminates under edge delamination".Composite Structures 349-350(2024).