Identification of mechanical and damage parameters of composite laminates based on a CPAM method

Masoumi, Farshid; Ghasemi-Ghalebahman, Ahmad; Kokabi, Mohammad-Javad

doi:10.1177/0731684418793207

Cited by 6 publications

(3 citation statements)

References 19 publications

(60 reference statements)

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“…Bolt looseness identification is a type of damage identification, which is widely used in engineering construction, mechanical facilities, aerospace, vehicles, and other fields [2][3][4][5]. Timely identification and damage diagnosis are essential for ensuring the regular operation of equipment and the routine application of infrastructure [6,7].…”

Section: Introductionmentioning

confidence: 99%

Research on bolt looseness monitoring based on electromechanical impedance transmissibility technology

Guo

et al. 2023

Smart Mater. Struct.

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Centralized damage, such as bolt looseness, is one of the most common types of damage in bridge structures. Thus, early detection of such damage is essential for bridge maintenance. Detection methods based on transmittance functions (TFs) have been widely studied. These functions use a T matrix to calculate damage indicators and reflect changes in dynamic parameters, such as natural structural frequencies. However, existing research has shown that the excitation position significantly impacts the T matrix. Therefore, this study proposes a new method based on electromechanical impedance (EMI) for local damage characterization, namely, EMI-TF. A series of comparative tests shows that the EMI-TF process is more sensitive and accurate than the traditional TFs. In addition, the sensitivity of the EMI-TF and EMI methods is compared. Results show that using EMI-TF technology can achieve the localization of minor damage at lower frequencies, which, to some extent, overcomes the limitations of the traditional EMI method that can only detect minor damage at high frequencies. The repeatability of EMI-TF is also studied separately in experiments, with 10 repeated experiments conducted. Results show that the experimental results of EMI-TF have high repeatability.

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Section: Introductionmentioning

confidence: 99%

Research on bolt looseness monitoring based on electromechanical impedance transmissibility technology

Guo

et al. 2023

Smart Mater. Struct.

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“…Michael et al, 4 Khammassi et al, 5 Tate et al, 6 Zhang et al, 7 and Yang et al 8 used the natural frequency to predict the extent and location of the delamination in composite beams and plates, respectively. Chandrashekhar et al, 9 Serovaev et al 10,11 , Masoumi et al, 12 and Geweth et al 13 used the natural frequency and mode shape to determine the damage parameters of multilayered composite plates. He et al 14 used the flexibility curvature to detect the composite beams with single, multiple or different degree damage.…”

Section: Introductionmentioning

confidence: 99%

Delamination detection on composite laminates using the modal displacement unevenness coefficient

Zhang

Yin

et al. 2022

Journal of Composite Materials

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This paper develops a new detection method taking the power function of the modal displacement curvature difference as a damage index to accurately identify the location and degree of the delamination. The 4-layer Poly Tetra Fluoro Ethylene films of size 0.02 m × 0.11 m are embedded between adjacent carbon fiber prepregs being 0.06 m and 0.115 m away from the left edge, respectively. The force-hammer excitation experiment is carried out on the prepared laminates with fixed supports at both ends, and the frequency response curves of measuring points are processed by the Polylscf algorithm in Dong-Hua Data Analysis System. The finite element model of delaminated laminates is established through adding new layers with film properties, and the modal displacements of nodes are compared with experimental data. The number of measuring points in the experiment is limited, making the precise characterization of surface abrupt characteristics difficult. The numerical results are used to calculate the square of the Gaussian curvature difference between the modal displacements of intact and damaged laminates. Significant improvement of the delamination detection accuracy is achieved in this process, confirming that the developed method constitutes a valuable tool for the Non-Destructive Testing of the laminates.

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“…Its main disadvantage is, however, that it can converge prematurely before reaching the best result (global optimum). To overcome this shortcoming, various improvements have been made to the method and satisfactory results have been obtained for damage detection in laminated composites (Rao et al 2015;Masoumi et al 2018;Jebieshia et al 2020).…”

Section: Introductionmentioning

confidence: 99%

Vibration-based damage detection in anisotropic laminated composite beams by a shear-deformable finite element and harmony search optimization

Kahya

Şimşek

Toğan

2022

Struct Multidisc Optim

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A numerical procedure to detect and quantify damages in laminated composite beams with arbitrary lay-up using limited vibration data and harmony search optimization is presented. Since any damage in a structure changes its vibration characteristics, they can be considered as the diagnostic parameters with the help of an optimization technique. For the present study, frequencies and mode shapes are used as the damage diagnostic parameters, and the harmony search algorithm (HSA) is used as the optimization tool. For finite element (FE) analyses, a fivenode, 13-degrees-of-freedom shear deformable beam element is employed. This element can take into account the elastic couplings among extension, bending, and torsion arising due to material anisotropy existing in generally laminated composites as well as the Poisson's effect. The damage to the beam is introduced by a stiffness loss coefficient at the elemental level while mass is assumed to be unchanged. Two different objective functions to be minimized are considered for damage detection. The efficacy of the proposed method with and without the presence of noise is demonstrated by two numerically simulated composite beams including single and multiple damages. Although its accuracy somewhat decreases in case of multiple minor damages, the proposed method is successful to detect moderate and severe single and multiple damages in practice. To overcome this weakness, (i) the algorithm can be hybridized with other metaheuristics, (ii) objective function can be enhanced by combining it with other vibration characteristics such as curvature, flexibility, etc., or (iii) two-or multi-stage damage identification methods can be considered.

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Identification of mechanical and damage parameters of composite laminates based on a CPAM method

Cited by 6 publications

References 19 publications

Research on bolt looseness monitoring based on electromechanical impedance transmissibility technology

Research on bolt looseness monitoring based on electromechanical impedance transmissibility technology

Delamination detection on composite laminates using the modal displacement unevenness coefficient

Vibration-based damage detection in anisotropic laminated composite beams by a shear-deformable finite element and harmony search optimization

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