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Research paper

DETERMINING THE STEP-CHANGE CONDUCTIVITY PROFILES WITHIN LAYERED METAL STRUCTURES USING INDUCTANCE SPECTROSCOPY

This paper presents an inverse method for determining the conductivity distribution of a flat, layered conductor using a multi-frequency electromagnetic sensor based on phase signature alone. Eddy current sensors are used in a wide range of non-destructive testing (NDT) applications. Single frequency sensors are very common, however, the potential of an eddy current sensor with spectroscopic techniques offer the ability to extract depth profiles and examine more fully the internal structure of

Wuliang Yin, Anthony J Peyton

International Journal on Smart Sensing and Intelligent Systems , ISSUE 3, 812–823

Article

EFFECT OF CeO2 DOPING ON THE STRUCTURE, ELECTRICAL CONDUCTIVITY AND ETHANOL GAS SENSING PROPERTIES OF NANOCRYSTALLINE ZnO SENSORS

Nanocrystalline sensors having the general formula ZnO + x wt% CeO2, where x = 0, 2, 4 and 6 were prepared by chemical precipitation method and sintered at 400, 600 and 800 oC for 2h in static air atmosphere. The crystal structure and the morphology of the prepared samples were investigated and characterized by using XRD, IR, SEM and TEM techniques. The investigation revealed that the average crystallites size increases with increasing the sintering temperature. The electrical conductivity is

A. M. El-Sayed, F. M. Ismail, M. H. Khder, M. E. M. Hassouna, S. M. Yakout

International Journal on Smart Sensing and Intelligent Systems , ISSUE 3, 606–623

Article

TOWARDS A NEW GAS SENSOR MICROSYSTEM USING ELECTROACTIVE POLYMERS THIN FILMS

This paper describes the development of a new gas sensor device using some electroactive polymers in thin layers. The poly(fluoro-aluminium phthalocyanine) powder, (AlPcF)n, has been synthesized, then deposited by vacuum evaporation on alumina or silicon substrates in the form of thin films with control of the deposition rate. (AlPcF)n thin layers are doped by NO2 or O2 diluted at various concentrations in N2 and their conductivity variations are studied as a function of time, temperature and

Allal LARBI, Bachir DJEDOU, Layachi BENNACER, Mounir BOUSBIA-SALAH

International Journal on Smart Sensing and Intelligent Systems , ISSUE 3, 448–462

research-article

INFLUENCE OF SELECTED MICRO ADDITIVES CONTENT ON THERMAL PROPERTIES OF GYPSUM

low values of the thermal conductivity coefficient λ. Gypsum is a construction material with a very wide application. It is perceived as safe, useful and environmentally friendly. In construction, gypsum is used to perform: internal plasters, decorative architectural details, statues, plasterboards, floors and construction blocks, as well as mortars and glues. This wide usefulness is an effect of the universal and positive physical properties of the material. Gypsum components are completely

Justyna CIEMNICKA, Roman JASKULSKI, Wojciech KUBISSA, Karol PRAŁAT

Architecture, Civil Engineering, Environment , ISSUE 3, 69–79

Research Article

Cross sensitivity of Ionic concentration on Admittance type measurement

Joyanta Kumar Roy, Bansari Deb Majumder

International Journal on Smart Sensing and Intelligent Systems , ISSUE 5, 1–5

Article

Mechanical And Thermal Stresses Anylsis In Diesel Engine Poiston With And Without Different Thermal Coating Layer On Piston Head

temperature, temperature gradients, Von-Mises stresses, and displacement in the diesel engine piston with and without 200 μm of thermal coating layer as (La2Zr 2O7) which have low thermal conductivity. The results show great improving in the performance of the piston with thermal coating layer.

Nabeel Abdulhadi Ghyadh, Maher A.R. Sadiq Al-Baghdadi, Sahib Shihab Ahmed

International Journal of Advanced Network, Monitoring and Controls , ISSUE 2, 96–111

Research Article

Acoustic emission testing of electrical stressed copper trace

Copper becomes more and more important in the electronic industry. This metal is more resilient than conventional materials (like aluminium) due to the higher electrical and thermal conductivity. During several electrical stress pulses the copper changes. The surface can melt up and cracks and voids can develop inside the copper specimen. In this paper we use acoustic emission testing to analyse copper degradation especially of copper and copper traces. It is evaluated if an acoustic wave

Daniela Florian, Thomas Wiesner, Bernhard G. Zagar

International Journal on Smart Sensing and Intelligent Systems , ISSUE 5, 1–6

Article

EVALUATION OF THE INFLUENCE OF THE PERCENTAGE OF COPPER CONTENT ON THE PHYSICAL AND CHEMICAL PROPERTIES OF THE FRICTION MATERIAL

Copper is one of the main components of friction materials used in vehicles’ brake systems. It is mainly used due to two features: good thermal conductivity and lubricity. Unfortunately, it is harmful no only to humans but also more to aquatic life. For this reason, there is an attempt to minimize its use. This paper presents the results of testing four groups of samples with different Cu contents (5, 10, 15, and 20%). Laboratory tests were performed using calorimetry, hot wire method

Andrzej BORAWSKI, Wojciech TARASIUK, Eliza BORAWSKA, Bożena SZCZUCKA-LASOTA, Michał KRZYSZTOFORSKI

Transport Problems , ISSUE 4, Part 1, 29–38

Research Article

A NOVEL METHOD FOR THE IMPROVEMENT IN THERMOELECTRIC PROPERTY OF TIN OXIDE THIN FILMS AND ITS APPLICATION IN GAS SENSING

Tin oxide thin film deposited on to glass substrates by the process of DC reactive magnetron sputtering has been used in our work. These films were characterized for their thermoelectric behavior. Further, a novel method has been developed to enhance the Seebeck coefficient of these films. Prior to the oxide film deposition on the glass substrate, thin metal films have been deposited at the two ends of the sample. High conductivity metals such as chromium, silver and copper were used for this

Anuradha S, K. Rajanna

International Journal on Smart Sensing and Intelligent Systems , ISSUE 2, 498–511

research-article

SELECTED PROBLEMS INVOLVING THE PRESERVATION OF HISTORICAL FRAME BUILDINGS IN SILESIA IN THE CONTEXT OF THEIR FUTURE THERMO-RENEWAL

materials have different thermal conductivity coefficients, thermal expansion and different diffusion resistance. In addition, it is characteristic for the envelopes that they have voids between the frame and the adjacent elements, allowing the penetration of rainwater into the wall. The development of such voids results, among others, from natural degradation processes of wood and mortar. The said process was described in the literature [14, 15], where aging processes and gradual losses in the cross

Agnieszka SZYMANOWSKA-GWIŻDŻ, Bożena ORLIK-KOŻDOŃ, Tomasz STEIDL

Architecture, Civil Engineering, Environment , ISSUE 4, 73–85

Research paper

NEW HORIZON IN BIOIMAGING AND BIOMAGNETICS

This paper reviews the recently developed techniques in biomagnetics and bioimaging such as transcranial magnetic stimulation (TMS), magnetic resonance imaging (MRI), and cancer therapy based on magnetic stimulation. A technique of localized and vectorial TMS has enabled us to obtain non-invasive functional mapping of the human brain. The development of new bioimaging technologies such as current distribution MRI and conductivity MRI potentially enables us to understand the dynamics of brain

Shoogo Ueno, Masaki Sekino

International Journal on Smart Sensing and Intelligent Systems , ISSUE 1, 300–314

Research paper

High Performance Macroporous Silicon Chemical Sensor With Improved Phase Detection Electronics

found to be almost ten times compared to previous reports of macroporous silicon sensor where contacts are taken from the backside and also in comparison to interdigited electrode array structure. The improvement and variation of sensitivity with frequency for different solutions has been explained taking into account the dependence of double layer impedance with frequency, distributed RC networks of the macroporous silicon structure, ionic conductivity of the solution and effects of ion sizes

C. RoyChaudhuri, S. Gangopadhyay, R. DevDas, S.K. Datta, H. Saha

International Journal on Smart Sensing and Intelligent Systems , ISSUE 3, 638–658

Article

FLEXIBLE PH SENSOR WITH POLYANILINE LAYER BASED ON IMPEDANCE MEASUREMENT

A flexible sensor with conducting polyaniline layer for detecting pH value based on the impedance measurement is fabricated and demonstrated in this study. The pH sensor consists of an interdigital electrode array on a flexible printed circuit and a thin-film polyaniline as the sensing layer. As the conductivity of polyaniline depends on the redox state, the impedance change of the polyaniline after it has reacted with different pH value solutions works as the sensing mechanism. In order to

Cheng-Hsin Chuang, Hsun-Pei Wu, Cheng-Ho Chen, Peng-Rong Wu

International Journal on Smart Sensing and Intelligent Systems , ISSUE 1, 1–13

Research Article

DEVELOPMENT OF NEURAL NETWORK-BASED ELECTRONIC NOSE FOR HERBS RECOGNITION

electronic nose system for herbs recognition has been developed. The system consist multi-sensor gas array which detects gas through an increase in electrical conductivity when reducing gases are absorbed on the sensor's surface. The output from individual sensors are collectively assembled and integrated to produce a distinct digital response pattern. A selected sensor array shows its relationship with the aroma of the herbs through the GC-MS test. By using five samples of herbs, the E-nose system has

A. Che Soh, K. K.Chow, U. K. Mohammad Yusuf, A. J. Ishak, M. K. Hassan, S. Khamis

International Journal on Smart Sensing and Intelligent Systems , ISSUE 2, 584–609

research-article

Diversity and seasonal fluctuation of tylenchid plant-parasitic nematodes in association with alfalfa in the Kerman Province (Iran)

one week after sampling. Additional soil was obtained during nematode sampling and used to analyze soil pH and electrical conductivity (EC) (Zhang et al., 2012) using standard methods (Rowell, 1994) (Table 1). Also, soil structure (% clay, % sand and % silt) was determined (Bouyoucos, 1962; Beretta et al., 2014). Average means for rainfall and temperature (Hashemi Nasab Khabisi et al., 2013; Kavian et al., 2016) as listed in Table 1, were used. The climate in the province ranges from dry and cold

Ebrahim Shokoohi, Phatu William Mashela, Fahimeh Iranpour

Journal of Nematology , 1–14

research-article

Nematode trophic structure in the phytotelma of Neoregelia cruenta (Bromeliaceae) in relation to microenvironmental and climate variables

relevant for nematode abundance (Ptatscheck and Traunspurger, 2015). The few PCPs of the water so far assessed – volume, pH, oxygen content, and electrical conductivity – did not impact the nematodes, while organic matter input in the phytotelma did (Ptatscheck and Traunspurger, 2014; Zotz and Traunspurger, 2016). To further understand the ecology of phytotelma nematodes, we decided: (i) to focus on ecosystems distinct from tropical and temperate forests, and (ii) to record several environmental

Alexandre M. Almeida, Ricardo M. Souza

Journal of Nematology , 1–12

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