On the dynamic behavior of piezoelectric active repair by the boundary element method

Alaimo, Andrea; Milazzo, Alberto; Orlando, Calogero

doi:10.1177/1045389x11425281

Cited by 21 publications

(18 citation statements)

References 31 publications

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“…Another method of repair is based on the boundary element method developed by Alaimo et al [33,34]. In this approach, the damaged structure considered was isotropic, and characterized by the behaviour of dynamic fracture mechanics.…”

Section: Active Repair Of Isotropic Materialsmentioning

confidence: 99%

Survey of Active Structural Control and Repair Using Piezoelectric Patches

Abuzaid¹,

Hrairi²,

Dawood³

2015

Actuators

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Abstract:The piezoelectric actuator has gained popularity over the last few years. Attention has been directed towards the study of their electromechanical response in active repair and the control of damaged structures. This has been made possible through the development of various numerical and analytical techniques for such studies. The shift of focus towards the piezoelectric based approaches has been due to their advantages, which include strategic cost benefits in maintenance, as well as an increase in the life cycle of the repaired structures. Furthermore, adhesively bonded joints are widely used in the manufacturing and repairing of structures in many industries, especially automotive and aerospace engineering. This is due to the requirement for lightweight materials as well as the potential adhesive used to join materials with different characteristics. The piezoelectric actuator has also shown the capacity in controlling and lowering the shear stress concentration and joint edge peel in adhesively bonded joint systems. The structure's control of stress and repair can generally be viewed as a reinforcement that influences the structure's damage tolerance. Therefore, the interest of this review is on the applications of the piezoelectric actuators in both structural damage and the bonded adhesive joint system. The specific goal is to recognize the contemporary scientific challenges, including future opportunities.

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Section: Active Repair Of Isotropic Materialsmentioning

confidence: 99%

Survey of Active Structural Control and Repair Using Piezoelectric Patches

Abuzaid¹,

Hrairi²,

Dawood³

2015

Actuators

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“…Different methodologies used for the active stress control and repair via the piezoelectric actuator [5][6]. Reduction of the stress concentration near notches and holes using the piezoelectric actuators was investigated by Rogers [7]. The study, conducted by Shah et al [8], found that 33 % of stress concentration on a finite plate with a hole can be obtain using the active piezoelectric actuator.…”

Section: Introductionmentioning

confidence: 99%

Stress analysis of plate with opposite semicircular notches and adhesively bonded piezoelectric actuators

Abuzaid¹,

Hrairi²,

Kabrein³

2020

Vib. proced.

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Stress control of structures by means of active smart material has evolved in recent years. The structure's stress control can typically be considered as strengthening that effects the structure's load-carrying capability. The stress-concentration cause by holes and notches produces a large variation and significant increase in stress. The control of the stress concentration and its distributions in the notched area is valuable for many practical and design applications. This study investigates the impacts of the piezoelectric actuators on control of the stress concentration factor (SCF) for an aluminum plate with opposite semicircular notches. Finite-element method (FEM) is used to access the SCFs due to external static loading. The stress control efficiency is assessed by the SCFs as an effectiveness criterion. The results indicate that SCFs reduces linearly with active piezoelectric actuator.

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“…The basic idea in their research is to induce stress with the piezoelectric actuator in the singular area at the crack tip in order to counteract the external load. Several methodologies have been developed to study the active repair of the cracked structure [3][4][5][6][7][8][9][10][11][12][13][14]. Due to their electromechanical coupling effects, piezoelectric materials are commonly used as sensors or actuators in various engineering structures.…”

Section: Introductionmentioning

confidence: 99%

Evaluating the Reduction of Stress Intensity Factor in Center-Cracked Plates Using Piezoelectric Actuators

2018

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Active repairs using smart materials such as piezoelectric actuators can play a significant role in reducing the crack damage propagation in engineering structures. This study analytically and numerically investigated the active repair of center-cracked plates using piezoelectric actuators. First, the stress intensity factor (SIF) for a center-cracked plate due to stress produced by a piezoelectric actuator is analytically modeled. This analytical model is obtained by applying the method of weight functions. In the second step, the solution is found for the center-cracked plate due to external loading from known linear elastic fracture mechanics. These solutions are then superimposed, taking into account the superposition principle to yield the total stress intensity factor for the integrated piezoelectric actuator to the center-cracked plate. Finally, the proposed theoretical model is verified by finite element simulation. The results indicated that the relative errors of the analytical model and the FEA results are less than 5% in all the cases studied in this paper.

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On the dynamic behavior of piezoelectric active repair by the boundary element method

Cited by 21 publications

References 31 publications

Survey of Active Structural Control and Repair Using Piezoelectric Patches

Survey of Active Structural Control and Repair Using Piezoelectric Patches

Stress analysis of plate with opposite semicircular notches and adhesively bonded piezoelectric actuators

Evaluating the Reduction of Stress Intensity Factor in Center-Cracked Plates Using Piezoelectric Actuators

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