scholarly journals Fabrication of Flexible Piezoelectric PZT/Fabric Composite

2013 ◽  
Vol 2013 ◽  
pp. 1-4 ◽  
Author(s):  
Caifeng Chen ◽  
Daiwei Hong ◽  
Andong Wang ◽  
Chaoying Ni
Keyword(s):  
Composite Material ◽  
Glass Fiber ◽  
Piezoelectric Materials ◽  
Hydrothermal Condition ◽  
Curved Surfaces ◽  
Piezoelectric Crystal ◽  
Optimum Conditions ◽  
Sensor Actuator ◽  
Fabric Composite ◽  
Complicated Conditions

Flexible piezoelectric PZT/fabric composite material is pliable and tough in nature which is in a lack of traditional PZT patches. It has great application prospect in improving the sensitivity of sensor/actuator made by piezoelectric materials especially when they are used for curved surfaces or complicated conditions. In this paper, glass fiber cloth was adopted as carrier to grow PZT piezoelectric crystal particles by hydrothermal method, and the optimum conditions were studied. The results showed that the soft glass fiber cloth was an ideal kind of carrier. A large number of cubic-shaped PZT nanocrystallines grew firmly in the carrier with a dense and uniform distribution. The best hydrothermal condition was found to be pH 13, reaction time 24 h, and reaction temperature 200°C.

ABS Fabrics Chemically Plated by Cu/Ni-P as Electromagnetic Shielding Material

2011 ◽  
Vol 306-307 ◽  
pp. 385-388
Author(s):  
Cheng Da Yu ◽  
Qi Bin Deng ◽  
Ping Li ◽  
Ming Cun Wang ◽  
Yong Feng Wang
Keyword(s):  
Composite Material ◽  
Composite Materials ◽  
High Frequency ◽  
Gradual Increase ◽  
Electromagnetic Shielding ◽  
Shielding Effect ◽  
Ideal Candidate ◽  
Varying Thickness ◽  
Fabric Composite ◽  
Shielding Material

In this paper, a novel composite material of Acrylonitrile-Butadlene-Styrene resin (ABS)-based fabric coated with Cu/Ni-P was prepared via chemical redox plating technique. A series of such composite materials with varying thickness of Cu and Ni-P showed remarkable electromagnetic shielding ability. With the increase of Cu thickness, the shielding effect (SE) increased gradually, but leveled off after 1.5μm at a SE of about 70dB. Similarly, with the increase of the depth of Ni-P coats, the SE showed a trendency of gradual increase, and leveled off after 1.0μm at a SE of about 45dB. The optimum ABS/Cu/Ni-P was Cu 1.5μm and Ni-P 1.0μm unilaterally. The ABS/Cu/Ni-P composite material possessed excellent shielding ability in the range of 0.001-1000MHz at a stable SE of >80dB, and it also possessed ideal shielding effect in the range of >36GHz. But in the range of 10-18GHz, the shielding effect is slightly decreased gradually to about 60dB. So the ABS/Cu/Ni-P fabric composite is an ideal candidate for electromagnetic shielding material at low and high frequency radiations.

scholarly journals Development of Knitted Fabric Reinforced Composite Material for Prosthetic Application

1999 ◽  
Vol 8 (6) ◽  
pp. 096369359900800 ◽  
Author(s):  
Zheng Ming Huang ◽  
S. Ramakrishna
Keyword(s):  
Composite Material ◽  
Knitted Fabric ◽  
Uv Curable ◽  
Prosthetic Socket ◽  
Mechanical Characterisation ◽  
Biomedical Device ◽  
Fabric Composite ◽  
New Material ◽  
Material Fabrication ◽  
Uv Curable Resin

This Letter reports the development of a knitted fabric composite material using Kevlar 49 fibres and ultraviolet (UV) curable resin for a biomedical device, prosthetic socket application. Material fabrication and mechanical characterisation are described. The mechanical properties of this new material are comparable with those of a currently used indirect socket material. Compared with other available direct sockets, this new material is capable of better conforming to patient's stump and has longer gel time for manual operations involved.

scholarly journals Stereo fabric composite material. III. Geometry and crystallography of rod system.

1995 ◽  
Vol 21 (5) ◽  
pp. 165-173 ◽  
Author(s):  
Tohru OGAWA ◽  
Yoshinori TESHIMA ◽  
Yoshinori WATANABE
Keyword(s):  
Composite Material ◽  
Fabric Composite ◽  
Rod System

Impact and acoustic emission performance of polyvinylidene fluoride sensor embedded in glass fiber-reinforced polymer composite structure

2020 ◽  
pp. 096739112091533
Author(s):  
Anjana Jain ◽  
Shivkumar Minajagi ◽  
Enoos Dange ◽  
Sushma U Bhover ◽  
YT Dharanendra
Keyword(s):  
Acoustic Emission ◽  
Glass Fiber ◽  
Smart Materials ◽  
Polyvinylidene Fluoride ◽  
Piezoelectric Materials ◽  
Fiber Reinforced Polymer ◽  
Fiber Reinforced ◽  
Glass Fiber Reinforced Polymer ◽  
Reinforced Polymer ◽  
Glass Fiber Reinforced

Smart materials find vital applications in the aerospace industry due to their ability to adapt to surrounding conditions according to design requirements and applicability. Piezoelectric materials are commonly used under the category of smart materials for transducer applications. Among piezoelectric materials, piezo polymer polyvinylidene fluoride (PVDF) is widely used for structural health monitoring (SHM) applications of composite structures, acoustic emission (AE) sensor, accelerometer, strain gauge, pressure sensor, and so on because of its outstanding piezo stress constant ( g 33), piezo strain constant ( d 33), flexibility, and lightweight. In this article, glass fiber-reinforced polymer (GFRP) laminates have been prepared by embedding the PVDF sensor into GFRP for the first time. A detailed study has been done on the behavior and characterization of the PVDF sensor embedded in GFRP. The PVDF sensors embedded in laminates were subjected to impact test, where a constant weight of 5.5 kg was dropped from a height of 10–60 mm in the interval of 10 mm, and the voltage response of the PVDF sensor was recorded. Sensitivity analysis and AE test of the PVDF sensor in GFRP were also carried out. This is useful for various aerospace applications especially for SHM of aircraft.

Optimization of composite leaf spring for reduced weight and improved noise, vibration, and harshness in an electric vehicle

2020 ◽  
Vol 51 (7-9) ◽  
pp. 127-138
Author(s):  
Smaranika Nayak ◽  
Jatin Sadarang ◽  
Isham Panigrahi ◽  
Ramesh Kumar Nayak ◽  
Manisha Maurya
Keyword(s):  
Composite Material ◽  
Stress Concentration ◽  
Glass Fiber ◽  
Electric Vehicle ◽  
Software Package ◽  
Research Work ◽  
Leaf Spring ◽  
Corrosion Resistant ◽  
Commercial Software Package ◽  
Noise Vibration

In automobiles suspension system, laminated springs are widely used for the absorption of shock and vibration. These laminated springs account for approximately 10%–20% of the unsprung weight of the vehicle. It has been found that composite material is used to reduce the weight of the vehicle in order to obtain better efficiency. Therefore, in the current research work, composite material is used for the fabrication of laminated spring. Among the various types of glass fiber available, the C-glass fiber has been widely used due to its better corrosion resistant property. Commercial software package ANSYS is used to optimize the composite-laminated spring. The optimized leaf spring is then fabricated by the hand layup method. It was found that the spring with composite graduated leaf resulted in 40% reduction in weight than the spring with steel graduated leaf. Similarly, the stress concentration and deformation values are reduced by 76.39% and 50% in comparison with those of steel graduated leaf. The composite-laminated spring showed better damping property and also resulted in less transmission of force to the chassis of the vehicle. The noise induced by the composite-laminated spring is also reduced in comparison with steel graduated leaf. Finally, a composite-laminated spring is found to be lighter in weight and with better noise, vibration, and harshness in comparison with steel graduated leaf. Thus, it is found to be best suited for an electric vehicle.

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