Showing papers in "Measurement in 1992"

TL;DR: In this article, the identification of orthotropic material moduli by a combined numerical and experimental approach is presented, where the identification is based on eigenfrequencies for a free rectangular plate.

TL;DR: In this article, two traceable dynamic force measurement systems in National Standards Laboratories are described, which operate on different physical principles and have been designed for different force and frequency ranges, however, an overlap region and three comparisons have been carried out in this area.

TL;DR: In this article, a discussion of some experimental checks for the degree of possible falsifications of the reconstruction caused by ray bending is presented, where the authors evaluate the Fourier analysis of the interferogram and the tomographic reconstruction algorithms used.

TL;DR: Load cells with nominal loads from 0.05 to 5 kg using thin-film strain gauges with a bridge resistance of 4000 Ω, but without hermetical encapsulation, are described in this paper.

TL;DR: In this paper, the results obtained in an experiment carried out with the grants of the EC Community Bureau of Reference (BCR) and with the cooperation of most European manufacturers were used to detect hysteresis and interpolate the results.

TL;DR: Theoretical and experimental investigation of interference signal properties in the condition of two dynamic speckle fields in superposition was made in this article, where the expression for correlation function and signal intensity fluctuations spectrum was found.

TL;DR: It is established that CORE can provide systematic and effective support for functional requirement analysis of complex instruments and instrument systems and its decomposition-based analysis helps to create complete and consistent functional requirement specification.

TL;DR: In this paper, the light field formed by focused laser beam scattering on moving and fixed surfaces is investigated and specific features of partially developed speckle-field dynamics are also analyzed.

TL;DR: Using formal methods for specification purposes, one can obtain a clear understanding of user's problems, especially the aspects of functional behaviour, and therefore produce a correct specification document based on this understanding.

TL;DR: Major points of consideration will be the application of an inductive learning method for the diagnosis strategy and the implementation of a PROLOG-based consultation system for the generation of measurement instrument settings.

TL;DR: In this article, the detection and the conditioning of a strain gauge bridge low-level signal is analyzed and the influence of higher strain gauge sensitivies on the deviations and inaccuracies is finally discussed.

TL;DR: In this paper, a linear accurate fast responding and simple digital device to measure speed deviation from a reference value, for use in the speed control of the physical model of an electric generating unit, is described.

TL;DR: A multichannel system which is equally well suited for high-speed dynamic measurements as well as precise high-resolution static measurements, fulfilling both tasks simultaneously, and is a ‘turnkey’ solution which relieves the user of many tedious installation and setting tasks.

TL;DR: A novel approach to indirect measurements based on the use of neural networks using multilayer perceptron acting as a mapping unit and results of extensive computer simulations covering quantitative as well as qualitative analyses are presented.

TL;DR: In this paper, a magnetic sensor is used for estimating the material flow of granular plastic pellets, based on magnetic marking of the reacting material and analysing the signal obtained by a detection coil while the pellets pass through a suitable magnetic field.

TL;DR: In-Stream analysis (ISA) has been installed in many mineral processing plants world wide and Amdel systems have been operating successfully for more than 18 years as discussed by the authors, with an emphasis on diversification into new applications including the dynamic environment of pilot plant operations.

TL;DR: In this paper, the calibration of infrared pyrometers against a commercially available cylindroconical black-body system, operating in the range from 900 to 2900 K, forms the basis for the study presented in this paper.

TL;DR: In this article, the authors describe the development and the characterisation of a measurement technique for obtaining the Residence Time Distribution Function of a reactor for post-poli-condensation of Poly-Ethylen-Terephtalate pellets.

TL;DR: In this paper, a series of single exposures made it possible to monitor the changes of the wood's surface with time, by combining two of the negatives the displacements over a given time interval were obtained for, at least in principle, all points on the surface.

TL;DR: A new technique has been formulated which overcomes all the limitations of the Tallqvist's method and consistent results are obtained even without volumetric control.

TL;DR: In this paper, methods of analytic determination of calibration intervals for off-line measuring facilities and means of determining the calibration intervals by simulation for redundant measuring systems are discussed, as well as a means of calculating the calibration interval for redundant measurement systems.

TL;DR: In this article, the application of the reflective moire holographic technique in analysing opaque materials such as composites is discussed and some limits of the method, common to other interferometric techniques, are outlined.

TL;DR: In this paper, a precision infrared thermometer was constructed and was used to study an absolute calibration technique between the freezing points of tin (232°C) and copper (1085°C).

TL;DR: In this article, a noise immune interferometric method for high-precision measurements of the dimensions of cylinder and cubed-shaped bodies is described, which employs photo-electric processing of the interference pattern.

TL;DR: In this article, a differential source-follower FET instrument is described for making static mechanical strain measurements by the use of quartz crystals and other piezo-electric sensors at open input.

TL;DR: In this article, the authors developed a new thick-film thermal printing head by developing a simplified structure of the heating elements, and unique processing techniques, and developed a 32-dot heating element with 200 dots/inch with excellent printing quality and low power consumption.

TL;DR: In this article, a new roll eccentricity sensor is proposed for the task of retrieving the desired reference signal from the available roll force measurement, which implements a modified comb filter structure which can be arranged in either tunable or adaptive form.