scholarly journals Piezo-electromechanical smart materials with distributed arrays of piezoelectric transducers: Current and upcoming applications

2015 ◽  
Vol 47 (4) ◽  
pp. 1051-1084 ◽  
Author(s):  
Ivan Giorgio ◽  
Luca Galantucci ◽  
Alessandro Della Corte ◽  
Dionisio Del Vescovo
Keyword(s):  
Smart Materials ◽  
Piezoelectric Transducers ◽  
Distributed Arrays

scholarly journals The Study of a Control Signal’s Phase Shift Influence on the Efficiency of a System for Active Vibration Damping Based on MFC Piezoelectric Transducers

2020 ◽  
Vol 318 ◽  
pp. 01005
Author(s):  
Marek Płaczek
Keyword(s):  
Phase Shift ◽  
Smart Materials ◽  
Composite Structures ◽  
Fiber Composite ◽  
Vibration Damping ◽  
Piezoelectric Transducers ◽  
Piezoelectric Composite ◽  
Active Vibration Damping ◽  
Active Vibration ◽  
The Impact

Active vibration damping of mechanical systems based on applications of smart materials has a large application potential and is getting more and more popular. In active vibration systems the fast response of actuators to the signals generated by sensors is one of the most important element that decides of the system’s efficiency because the idea is to generate force by active elements that will suppress the vibrations detected by the sensors. In this paper results of laboratory tests of a control signal’s phase shift influence on the efficiency of a system for active vibration damping based on application of Macro Fiber Composite (MFC) piezoelectric transducers are presented. MFCs are modern piezoelectric composite transducers produced as a thin, elastic films and can be easily installed on the surface of the mechanical subsystem or laminated in composite structures. The impact of the phase shifting between signals generated to power the actuator on the damping efficiency was verified and analysed. It was verified in what phase angle the damping of vibration has the best efficiency and if the shift of the signals causes the linear loss of the system efficiency. It was also verified whether it causes the same effects in both directions of shifting (advance or delay in the phase of the signal supplying the damper relative to the signal generated by the beam’s vibration).

scholarly journals Corrosion Investigation of Reinforced Concrete Based on Piezoelectric Smart Materials

Materials ◽  
2019 ◽  
Vol 12 (3) ◽  
pp. 519
Author(s):  
Weihua Shi ◽  
Ying Chen ◽  
Peng Liu ◽  
Dongyu Xu
Keyword(s):  
Mass Loss ◽  
Smart Materials ◽  
Initial Period ◽  
Corrosion Process ◽  
Piezoelectric Transducers ◽  
Relative Mass ◽  
Statistical Parameters ◽  
Impedance Technique ◽  
Piezoelectric Impedance ◽  
Reinforcement Bar

An embedded piezoelectric transducer was developed for monitoring the corrosion process of reinforcement bars in concrete based on the piezoelectric impedance technique. The electrochemical method was employed to accelerate the corrosion process of the reinforcement bar with relative mass loss of 0.5–10%, and the resistance spectra of the piezoelectric transducers were investigated to assess the corrosion process. The results show that the corrosion process of the reinforcement bar has significant influence on the resistance spectra of the piezoelectric transducers. Statistical parameters were used to intuitively evaluate the corrosion evolution based on variations of the resistance spectra. The corrosion process of reinforcement bar in concrete can be classified into three periods; that is, the initial period when the relative mass loss is less than 2%, the developing period at a relative mass loss of 2–4%, and the rapid corrosion period when the relative mass loss is higher than 4%.

scholarly journals Gas Foil Bearing Technology Enhanced with Smart Materials

2021 ◽  
Vol 11 (6) ◽  
pp. 2757
Author(s):  
Adam Martowicz ◽  
Jakub Roemer ◽  
Sławomir Kantor ◽  
Paweł Zdziebko ◽  
Grzegorz Żywica ◽  
...  
Keyword(s):  
Shape Memory Alloys ◽  
Thermal Behavior ◽  
Shape Memory ◽  
Smart Materials ◽  
Piezoelectric Transducers ◽  
Current Investigation ◽  
Thermoelectric Modules ◽  
Foil Bearings ◽  
Thermomechanical Characteristics ◽  
Foil Bearing

The paper discusses a perspective of the usage of various types of smart materials to enhance the operational properties of Gas Foil Bearings. The authors, referring to the current investigation on thermomechanical characteristics of the above-mentioned bearing type, have focused on the concept of using Shape Memory Alloys, Piezoelectric Transducers, Thermoelectric Modules and Thermocouples to improve both mechanical and thermal behavior of the bearings. Based on the available literature and the authors’ experience, the present work provides an overview of the known and perspective applications of smart materials to Gas Foil Bearings. In particular, a discussion on their capabilities, limitations and effectiveness is conducted, taking into account the unique characteristics and requirements of the studied type of bearings.

4D printing technology, modern era: A short review

2020 ◽  
pp. 92-111
Author(s):  
Khodadad Mostakim ◽  
Nahid Imtiaz Masuk ◽  
Md. Rakib Hasan ◽  
Md. Shafikul Islam
Keyword(s):  
Smart Materials ◽  
Computer Aided Design ◽  
Short Review ◽  
Stimuli Responsive ◽  
4D Printing ◽  
Space Applications ◽  
Printing Technology ◽  
Practical Applications ◽  
Biomedical Technologies ◽  
Novel Material

The advancement in 3D printing has led to the rapid growth of 4D printing technology. Adding time, as the fourth dimension, this technology ushered the potential of a massive evolution in fields of biomedical technologies, space applications, deployable structures, manufacturing industries, and so forth. This technology performs ingenious design, using smart materials to create advanced forms of the 3-D printed specimen. Improvements in Computer-aided design, additive manufacturing process, and material science engineering have ultimately favored the growth of 4-D printing innovation and revealed an effective method to gather complex 3-D structures. Contrast to all these developments, novel material is still a challenging sector. However, this short review illustrates the basic of 4D printing, summarizes the stimuli responsive materials properties, which have prominent role in the field of 4D technology. In addition, the practical applications are depicted and the potential prospect of this technology is put forward.

Smart Materials: A Primer

2017 ◽  
Vol 7 (3) ◽  
pp. 43-44 ◽  
Author(s):  
Matthew N. O. Sadiku ◽  
◽  
Mahamadou Tembely ◽  
Sarhan M. Musa ◽  
◽  
...  
Keyword(s):  
Smart Materials

Review of iMedia: The Gendering of Objects, Environments and Smart Materials by Sarah Kember (Basingstoke, UK: Palgrave Macmillan, 2016)

2016 ◽  
Vol 2 (1) ◽  
pp. 1-4
Author(s):  
Kevin Gotkin
Keyword(s):  
Smart Materials

Review of iMedia: The Gendering of Objects, Environments and Smart Materials by Sarah Kember (Basingstoke, UK: Palgrave Macmillan, 2016)

SMART MATERIALS

2020 ◽  
Author(s):  
V. A.  Laserko ◽  
◽  
I. F.  Maximova ◽  
Keyword(s):  
Smart Materials

Оценка реальной чувствительности приемочного ультразвукового контроля рельсов

2020 ◽  
pp. 17-27
Author(s):  
А.А. Шелухин
Keyword(s):  
Ultrasonic Pulse ◽  
Piezoelectric Transducers ◽  
Acoustic Path ◽  
Metallic Inclusion ◽  
Inclusion Type ◽  
The Real ◽  
Rail Head ◽  
Pulse Echo

In this article, the analysis of the acoustic path during the ultrasonic pulse echo testing of the rail head in production is carried out. The influence of the parameters of the applied piezoelectric transducers on the distribution of sensitivity for the sounding scheme used in the existing installations is estimated and the real sensitivity of detecting defects of the «non-metallic inclusion» type is estimated.

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