Andrea Cataldo, Emanuele Piuzzi, Giuseppe Cannazza, Egidio De Benedetto, Luciano Tarricone
Quality control of vegetable oils is becoming more stringent, and related laws are being enforced, especially for avoiding adulteration. As a result, there is a substantial need for methods of analysis that could provide real-time in-situ monitoring, especially for quality control purposes during production process. In this regard, the present paper investigates the possibility of monitoring qualitative characteristics of vegetable oils through microwave dielectric spectroscopy, which is a highly versatile investigative approach. In particular, the Cole & Cole frequency-domain dielectric...
XIX IMEKO World Congress
· TC4
· 2009
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Elena Iliescu, Sorin Bercea, Aurelia Celarel, Constantin Cenusa
The measurement of the radon in the environment became during the last years an important field of radiation protection. That is why, the necessity of calibration standards for the radon measuring devices became very important. This paper presents a way of radon track detector calibration wich was developed in the National Institute of R&D for Physics and Nuclear Engineering, Bucharest.
XIX IMEKO World Congress
· TC19
· 2009
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Francesco Adamo, Filippo Attivissimo, Anna M. L. Lanzolla, Maurizio Spadavecchia
The main purpose of this work is to analyze the Magnetic Resonance Imaging (MRI) methodologies used in non-invasive clinical investigation, with the aim of developing suitable denoising filtering techniques to improve the image quality and to allow the reduction of the acquisition time during an health examination. In this way the number of tests that can be performed in the same amount of time can be increased. This work was carried out in collaboration with the staff of Martina Franca Hospital (Italy), which provided ourselves the material necessary for the development of the simulation...
XIX IMEKO World Congress
· TC13
· 2009
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Mladen Banovic, Josip Butorac
Assessment of power transformer condition is very important for utilities, to ensure continuous power transmission and power supply. Therefore, different techniques are used for condition assessment, as off-line diagnostics and on-line monitoring. The off-line diagnostics has some time period between consecutive diagnoses, and during that period the condition is unknown. Diagnostic tools in monitoring system usually comprise comparison of values of monitored quantities to preset limits, and alarming if these limits are exceeded. In this way weak diagnostic capabilities are achieved....
XIX IMEKO World Congress
· TC10
· 2009
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Kozarski Maciej, Krzysztof Zielinski, Krzysztof, Jakub Palko, Dominik Bozewicz, Marek Darowski
The main purpose of this paper is presenting the new hybrid (pneumo-numerical) model of lungs as well as some results of its successful experimental examinations. This kind of models enables simulation of different lung properties including rheological and nonlinear features and may be also applied to develop different lungs mechanics measuring systems. The presented model design approach is based on the linear impedance transformation from the numerical to pneumatic signal environments. Some metrological aspects of the model design and function are considered e.g. statical and dynamical...
XIX IMEKO World Congress
· TC13
· 2009
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Ryota Kudo, Shin Usuki, Satoru Takahashi, Kiyoshi Takamasu
Semiconductor design rules and process windows continue to shrink, and developing new processes to accommodate parameters such as less-than-50nm design rules and a 300mm wafer becomes increasingly challenging. Next-generation defect inspection is urgently demanded. Optics and electron beams have been the main technologies for detection of the critical defects, but both have their disadvantages. Optical inspection is generally not sensitive enough for defects at 100nm geometries and below, while SEM inspection has low throughput because it takes a long time to scan 300 mm. In order to find a...
XIX IMEKO World Congress
· TC2
· 2009
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Lech Hasse, Janusz Smulko
High voltage varistors that consist of grained ZnO have to be tested before assembling. The recommended method for standard industrial testing of varistors demands application of high voltages and intensive currents that is inconvenient and needs extensive power consumption. Nondestructive methods for varistor quality and endurance evaluation have been proposed. They rely on the application of resonant ultrasound spectroscopy and nonlinearity testing. The parameters of assessment have been proposed and the results of measurements performed for several hundreds of varistor samples are quoted.
XIX IMEKO World Congress
· TC10
· 2009
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Vytautas Giniotis, Ramutis Bansevicius, Mindaugas Rybokas
This paper deals with a new application of mechatronic means for precision mechanics, usually used in precision instrumentation and measurement equipment. Angle calibration means have been developed using mechatronic elements. Mechatronic arrangements for systematic error correction in mechatronic positioning systems and information – measuring systems are explained pointing out the main advantages of such systems applied for specific purposes.
XIX IMEKO World Congress
· TC14
· 2009
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Lech Hasse, Janusz Smulko
The noise spectroscopy in a frequency domain has been used as a diagnostic tool of high-voltage varistors consisting of grained ZnO. The electrical properties of tested specimens have been described. In this experimental study, we present the applied measurement system and the results of noise spectrum measurements for the selected structures of 280 V varistors. Noise properties are related to electrical characteristics of measured samples. It is suggested that the proposed procedure can be applied as an effective non-destructive testing method focused on defects and structural inhomogeneity...
XIX IMEKO World Congress
· TC10
· 2009
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Andraž Miklavec, Valentin Batagelj, Jovan Bojkovski, Igor Pušnik, Janko Drnovšek
In order to improve and optimize the procedure for calibration of radiation thermometers, an automated calibration bench was developed. Manual calibration with the help of special stands is time consuming and less reliable compared to automated calibration. The developed calibration bench has 5 degree of freedom (DOF) (3 translation joints and 2 rotation joints). For each axis we have used motorized movement control by means of a stepper motor. Stepper motors control circuit has built-in microcontroller, which controls the speed and direction of rotation of the stepper motors and...
XIX IMEKO World Congress
· TC7
· 2009
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