Nondestructive damage detection and interfacial evaluation of single-fibers/epoxy composites using PZT, PVDF and P(VDF-TrFE) copolymer sensors

Park, Joung-Man; Kong, Jin-Woo; Kim, Dae-Sik; Yoon, Dong‐Jin

doi:10.1016/j.compscitech.2004.07.006

Cited by 53 publications

(36 citation statements)

References 21 publications

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“…An algorithm to determine these quantities from time series data is also described. Park, J. M. et al (2005) evaluate the performance of different sensors for damage detection in glass fibre/epoxy composites through acoustic emission measurements. The analyzed sensors were: the PZT (piezoelectric lead-zirconate-titanate), the PVDF (polyvinylidene fluoride) and the P(VDF-TrFE) (poly(vinylidene fluoride-trifluoroethylene)).…”

Section: Instrumentationmentioning

confidence: 99%

A Review of Vibration-based Structural Health Monitoring with Special Emphasis on Composite Materials

Montalvão¹,

Maia²,

Ribeiro³

2006

The Shock and Vibration Digest

429

243

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Structural health monitoring and damage detection techniques are tools of great importance namely in the offshore, civil, mechanical and aeronautical engineering communities, either due to safety reasons or to the economical benefits it may bring. The need for detecting damage in complex structures has led to the development of a vast amount of techniques, in particular those based upon structural vibration analysis. In the present article, some of the latest advances in Structural Health Monitoring and Damage Detection have been covered, with an emphasis on composite structures, given the fact that this kind of materials have currently a wide range of engineering applications.

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Section: Instrumentationmentioning

confidence: 99%

A Review of Vibration-based Structural Health Monitoring with Special Emphasis on Composite Materials

Montalvão¹,

Maia²,

Ribeiro³

2006

The Shock and Vibration Digest

429

243

View full text Add to dashboard Cite

show abstract

“…Thus, the research interest here is to develop flexible UTs for potential implementation at room temperature and HT applications on samples of simple and complex geometries. In commercially available flexible transducers, piezoelectric polymers such as polyvinylidene fluoride (PVDF) [32,33] and piezoelectric ceramic/polymer composites [34][35][36] are mainly used as piezoelectric materials. Both materials include polymer which prevents the use of such flexible transducers at elevated temperature.…”

Section: Flexible Ultrasonic Transducersmentioning

confidence: 99%

“…Several copolymers have superior temperature stability compared to PVDF, however, operation temperature is limited to around 90-100°C [32]. In addition, piezoelectric polymers have low electromechanical coupling coefficients [33,37]. Compared to bulk piezoelectric ceramics or polymers, piezoelectric ceramic/polymer composites may have superior electromechanical coupling properties in addition to flexibility and low dielectric losses.…”

Section: Flexible Ultrasonic Transducersmentioning

confidence: 99%

3K-1 Integrated and Flexible Piezoelectric Ultrasonic Transducers

Kobayashi

Jen

2006

2006 IEEE Ultrasonics Symposium

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Thick (>40µm) ceramic films as piezoelectric and ultrasonic transducers (UTs) have been successfully deposited on metallic and non-metallic substrates by a spray technique. In the film fabrication a composite consisting of piezoelectric powders well mixed with solution of high dielectric constant is directly sprayed onto the substrate. It is then dried, fired or annealed by heat. Multiple coating is used to achieve preferred thicknesses. A corona poling is utilized to achieve the piezoelectricity of the film. The top electrode is accomplished by a painting method. All fabrication processes can be carried out on-site and by handheld devices. Integrated ultrasonic longitudinal, shear, surface and plate wave transducers have been made. The same technology has been also used to fabricate flexible transducers consisting of a thin substrate, a piezoelectric ceramic film and electrodes. The flexibility is realized owing to the porosity of piezoelectric film and the thinness of the piezoelectric film, substrate and electrodes. All transducers have been tested at least up to 150°C. Their applications for non-destructive testing of different materials are demonstrated. Keywords-piezoelectric/ultrasonic transducers; high temperature, bulk, surface and plate wave transducers, nondestructive testing, flexible transducer 1119 ©

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“…Unlike piezoceramic crystals and ceramics, piezo polymer sensors are suitable for applications involving curved and complex geometries. Realizing its high sensitivity and flexibility Piezo polymer transducers is used by researchers on pipes and plates for the generation and reception of guided waves [1][2][3][4] for structural health monitoring applications. Analytical studies are also done to determine the efficiency of piezoelectric thin films in sensing mode-I and mode-II cracks in host structure is studied using a quasi three dimensional model [5][6][7][8][9] .…”

Section: Introductionmentioning

confidence: 99%

Ultrasonic guided wave sensing properties of PVDF thin film with inter digital electrodes

Rathod

Mahapatra

2014

SPIE Proceedings

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Ultrasonic strain sensing performance of the large area PVDF with Inter Digital Electrodes (IDE) is studied in this work. Procedure to obtain IDE on a beta-phase PVDF is explained. PVDF film with IDE is bonded on a plate structure and is characterized for its directional sensitivity at different frequencies. Guided waves are induced on the IDE-PVDF sensor from different directions by placing a piezoelectric wafer actuator at different angles. Strain induced on the IDE-PVDF sensor by the guided waves in estimated by using a Laser Doppler Vibrometer (LDV) and a wave propagation model. Using measured voltage response from IDE-PVDF sensor and the strain measurements from LDV the piezoelectric coefficient is estimated in various directions. The variation of 11 e at different angles shows directional sensitivity of the IDE-PVDF sensor to the incident guided waves. The present study provides an effective technique to characterize thin film piezoelectric sensors for ultrasonic strain sensing at very high frequencies of 200 kHz. Often frequency of the guided wave is changed to alter the wavelength to interrogate damages of different sizes in Structural Health Monitoring (SHM) applications. The unique property of directional sensitivity combined with frequency tunability makes the IDE-PVDF sensor most suitable for SHM of structures.

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Nondestructive damage detection and interfacial evaluation of single-fibers/epoxy composites using PZT, PVDF and P(VDF-TrFE) copolymer sensors

Cited by 53 publications

References 21 publications

A Review of Vibration-based Structural Health Monitoring with Special Emphasis on Composite Materials

A Review of Vibration-based Structural Health Monitoring with Special Emphasis on Composite Materials

3K-1 Integrated and Flexible Piezoelectric Ultrasonic Transducers

Ultrasonic guided wave sensing properties of PVDF thin film with inter digital electrodes

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