Piezoelectric smart composite blades for collision monitoring: Measurement of mechanical properties and impact sensitivity

Kang, Shin-Woong; Kang, Myeong-Cheol; Kang, Lae-Hyong

doi:10.1016/j.compstruct.2018.06.065

Cited by 8 publications

(7 citation statements)

References 20 publications

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“…The authors verified the signal to noise ratio (SNR) of adjacent electrodes 19 for the paint sensor and the impact responsiveness in the wireless system. 17 In this article, to increase the practicality of the conventional piezoelectric paint sensor, primer paint was used as the resin (epoxy resin was used in the previous study), and topcoat was applied to protect the electrode. Nevertheless, sufficient shock response characteristics were confirmed.…”

Section: Resultsmentioning

confidence: 99%

“…This means that ordinary paint can be turned into an impact monitoring system via piezoelectrically functionalized polymer matrix. [15][16][17][18][19] Piezoelectric paint, piezoelectric nano powder mixed with polymer resin, has been researched over the last 25 years. Basic studies to disclose the characteristics of the piezoelectric paint has been presented about weight percentage of piezoelectric material, film thickness, curing temperature, poling process and so on.…”

Section: Introductionmentioning

confidence: 99%

“…This means that ordinary paint can be turned into an impact monitoring system via piezoelectrically functionalized polymer matrix. 15–19…”

Section: Introductionmentioning

confidence: 99%

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Impact monitoring characteristics of piezoelectric paint sensor by thermal fatigue analysis for railroad vehicle applications

Choi

Hwang

Kang

et al. 2020

Structural Health Monitoring

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The strong aerodynamic drag under a railroad vehicle in motion causes the track ballast to fly up and around. The flying ballast can collide with the underside of the coach, damaging the electronics installed there. There are even cases wherein the aerodynamics of fast-moving train causes the gravel to hit the side of the coach and break the windows. Extensive and numerous studies are underway to reduce the damage caused by such phenomena. In this study, a “smart paint sensor” for impact monitoring was fabricated using piezoelectric nano powder and commercial paint for railroad vehicles, and the application of impact monitoring to railroad vehicles was analyzed. The process was simplified because the use of commercial paint eliminated the need to apply an additional layer of functionalized paint. Furthermore, the fact that the paint can be evenly sprayed on a large surface made it suitable for use on large and intricate objects such as a railroad vehicle bogie. Because railroad vehicles are exposed to thermal stress for a long period of time, a thermal fatigue test was conducted in order to figure out the stability of the polymer-based material, which is relatively vulnerable to temperature variations. The test results were used to analyze the impact sensitivity of the piezoelectric paint sensor. For the analysis, a full-size mock-up of the railroad vehicle bogie and an impact monitoring system with piezoelectric paint sensor were implemented in order to visualize the impact signals from differently shaped objects with large surfaces.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Impact monitoring characteristics of piezoelectric paint sensor by thermal fatigue analysis for railroad vehicle applications

Choi

Hwang

Kang

et al. 2020

Structural Health Monitoring

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“…Moreover, the use of functional composites enables the identification of smart conceptual solutions without any increment in weight and geometrical complexity. Self-sensing and self-powered materials are examples of smart composite that enable the development of smart conceptual design solutions [42,43]. Nevertheless, all limits related to composites such as plies assembly constraints (e.g., minimum bending radii), special care in tooling and finishing (e.g., drilling, milling, coating), and their in-service use (sensitivity to shocks and impacts) have to be accounted [44].…”

Section: Conceptual Design and Considerations About Materials And Processesmentioning

confidence: 99%

A systematic material-oriented design approach for lightweight components and the CFRP motor wheel case study

Cocchi

Raimondi

Brugo

et al. 2020

Int J Adv Manuf Technol

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Lightweighting is a need in many industrial fields and, in particular, in transports, to reduce energy consumptions and to promote more environmentally friendly solutions. In this context, the use of composite materials has become ever more strategic, and a design approach that effectively combines shapes and materials is by now mandatory. In this work, the Systematic Design Approach has been extended to include potentialities and constraints related to materials and manufacturing at the early steps of the design flow. The proposed approach, named systematic material-oriented design approach, enables designers to identify and to select, in a systematic way, design solutions where shapes are tailored to materials and where benefits and criticalities related to the manufacturing processes are considered. In the paper, each design phase of the approach is described and applied to design the carbon fiber-reinforced polymer (CFRP) motor wheel of the Emilia 4 solar vehicle. Optimization steps of geometry and materials complete the approach. The design of the wheel is fully detailed as well as its manufacturing and bending tests under static and fatigue conditions. In particular, strain fields were measured with a 3D digital image correlation (DIC) system during static tests to validate the numerical model.

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“…The sieved powder was pressed into a mold (Φ = 30 mm) under a pressure of 100 MPa. The PVA in the ceramic disk was burnt out at 600 • C (heating rate: 100 • C/h) for 2 h. Subsequently, the ceramic disk was sintered at 1200 • C (heating rate: 100 • C/h) for 2 h with a spacer powder in an alumina crucible [14]. The sintered PNN-PZT ceramic disk was polished and coated with silver paste to obtain electrodes on both surfaces.…”

Section: Synthesis Of the Mno 2 -Doped Pnn-pztmentioning

confidence: 99%

Piezoelectric Characteristics of 0.55Pb(Ni1/3Nb2/3)O3-0.45Pb(Zr,Ti)O3 Ceramics with Different MnO2 Concentrations for Ultrasound Transducer Applications

Kang

2019

Materials

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In this study, we investigate the piezoelectric characteristics of 0.55Pb(Ni1/3Nb2/3)O3-0.45Pb(Zr,Ti)O3 (PNN-PZT) with MnO2 additive (0, 0.25, 0.5, 1, 2, and 3 mol%). We focus on the fabrication of a piezoelectric ceramic for use as both actuator and sensor for ultrasound transducers. The actuator and sensor properties of a piezoelectric ceramic depend on the piezoelectric strain coefficient d and piezoelectric voltage coefficient g, related as g = d/εT. To increase g, the dielectric constant εT must be decreased. PNN-PZT with MnO2 doping is synthesized using the conventional solid-state reaction method. The electrical properties are determined based on the resonant frequencies and vibration modes measured by using an impedance analyzer. The MnO2 addition initially improves the tetragonality of the PNN-PZT ceramic, which then saturates at a MnO2 content of 1 mol%. Therefore, the dielectric constant and piezoelectric coefficient d33 steadily decrease, while the mechanical properties (Qm, Young’s modulus), tanδ, electromechanical coupling coefficient k, and piezoelectric voltage coefficient g were improved at 0.5–1 mol% MnO2 content.

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Piezoelectric smart composite blades for collision monitoring: Measurement of mechanical properties and impact sensitivity

Cited by 8 publications

References 20 publications

Impact monitoring characteristics of piezoelectric paint sensor by thermal fatigue analysis for railroad vehicle applications

Impact monitoring characteristics of piezoelectric paint sensor by thermal fatigue analysis for railroad vehicle applications

A systematic material-oriented design approach for lightweight components and the CFRP motor wheel case study

Piezoelectric Characteristics of 0.55Pb(Ni1/3Nb2/3)O3-0.45Pb(Zr,Ti)O3 Ceramics with Different MnO2 Concentrations for Ultrasound Transducer Applications

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