Effect of stiffness and thickness ratio of host plate and piezoelectric patches on reduction of the stress concentration factor

Fesharaki, Javad Jafari; Madani, Seyed Ghasem; Golabi, Sa’id

doi:10.1007/s40091-016-0125-x

Cited by 15 publications

(5 citation statements)

References 29 publications

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“…Indeed, Abuzaid et al [23] showed that to achieve the best result in reduction in the SIF, it is better to use a thin actuator with relatively high voltage. Fesharaki et al [33] compared the capability of the piezoelectric actuators with different stiffness/thickness ratios in reducing the stress concentration factor in a plate with a hole. By defining stiffness ratio as E plate /E piezo and thickness ratio as t plate /t piezo , they found that at thickness ratios less than 1, more reduction in the stress concentration factor occurred.…”

Section: Resultsmentioning

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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Section: Resultsmentioning

confidence: 99%

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

2018

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“…Figure shows the FE model of bonded PZT actuators. Fesharaki et al , used the particle swarm optimization (PSO) algorithm to simulate the best position of the PZT patch around the plate hole subjected to a tensile load and determined the maximum reduction of the stress concentration factor. Later, they examined the effect of PZT patch placement in a plate to decrease the stress concentration factor around the hole under tension load by changing the stiffness ratio for two different cases using patches around the hole which were attached to the left–right and top–bottom.…”

Section: Repair/control Methods In Fracture Mechanics Studiesmentioning

confidence: 99%

Review of Piezoelectric Actuator Applications in Damaged Structures: Challenges and Opportunities

et al. 2023

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Piezoelectric material transducers can work as an actuator or sensor. Generally, the actuator will be used to repair the structure, and the sensor will be used to find the health condition. In the last two decades, piezoelectric actuators have shown the capacity to lower and control the shear stress concentration and joint edge peel in adhesively bonded joint systems. Hence, this paper aims at reviewing the application of piezoelectric actuators in damaged structures and adhesively bonded combined systems based on three different repair investigation methods: analytical, numerical, and experimental. Moreover, the study also explores the delamination control of composite material beams and some other studies using a piezoelectric actuator. The specific aim of this work is to determine scientific challenges and future opportunities for considering piezoelectric materials in damaged structure investigations for novice researchers.

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“…In many cases, composite material is inexpensive and lightweight, but due to high rigidity, it can crack or delaminate easily as compared to other types of body kit materials [61], and such type of delamination can be controlled by a PZT actuator. As an active control, PZT actuators were used over the last two decades, during which researchers have investigated various subjects, such as the control of buckling, stresses, and cracks in the structures [62], and the use of the piezoelectric actuator to sense and operate the structure has been a point of interest [63][64][65][66][67][68][69].…”

Section: Active Controlmentioning

confidence: 99%

A Review of Piezoelectric Material-Based Structural Control and Health Monitoring Techniques for Engineering Structures: Challenges and Opportunities

Aabid

Parveez

Raheman³

et al. 2021

Actuators

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With the breadth of applications and analysis performed over the last few decades, it would not be an exaggeration to call piezoelectric materials “the top of the crop” of smart materials. Piezoelectric materials have emerged as the most researched materials for practical applications among the numerous smart materials. They owe it to a few main reasons, including low cost, high bandwidth of service, availability in a variety of formats, and ease of handling and execution. Several authors have used piezoelectric materials as sensors and actuators to effectively control structural vibrations, noise, and active control, as well as for structural health monitoring, over the last three decades. These studies cover a wide range of engineering disciplines, from vast space systems to aerospace, automotive, civil, and biomedical engineering. Therefore, in this review, a study has been reported on piezoelectric materials and their advantages in engineering fields with fundamental modeling and applications. Next, the new approaches and hypotheses suggested by different scholars are also explored for control/repair methods and the structural health monitoring of engineering structures. Lastly, the challenges and opportunities has been discussed based on the exhaustive literature studies for future work. As a result, this review can serve as a guideline for the researchers who want to use piezoelectric materials for engineering structures.

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Effect of stiffness and thickness ratio of host plate and piezoelectric patches on reduction of the stress concentration factor

Cited by 15 publications

References 29 publications

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

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

Review of Piezoelectric Actuator Applications in Damaged Structures: Challenges and Opportunities

A Review of Piezoelectric Material-Based Structural Control and Health Monitoring Techniques for Engineering Structures: Challenges and Opportunities

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