Showing papers in "Measurement in 2006"

TL;DR: F fuzzy logic principle is used as a fault diagnostic technique to describe the uncertain and ambiguous relationship between different fault symptoms and the events, analyze the fuzzy information existing in the different phases of fault diagnosis and condition monitoring of the pumps, and classify frequency spectra representing various pump faults.

TL;DR: In this paper, a coarse-fine search method based on an affine transform and a new technique of fine searching called "nested fine search method" is proposed for image correlation analysis.

TL;DR: A turning dynamometer that can measure static and dynamic cutting forces by using strain gauge and piezo-electric accelerometer respectively has been designed and constructed in this paper, where the orientation of octagonal rings and strain gauge locations has been determined to maximize sensitivity and to minimize cross-sensitivity.

TL;DR: In this article, the authors illustrate the benefits and problems of mathematical modelling and effective numerical algorithms to determine the diffraction of light by periodic grating structures, which are required for reconstruction of the grating structure from the light diffraction patterns.

TL;DR: In this article, a Fourier trans-form based approach for spectrum and spectral density estimation from long time series is presented, which uses Fourier transforms of fixed length with time-domain windows and overlap.

TL;DR: In this article, the use of an embedded fiber-optic Bragg grating (FBG) sensor to measure dynamic strain of a clamped-clamped glass fiber composite beam is presented.

TL;DR: In this article a complete set of formulas for both uncertainty expression and risk evaluation are provided, their practicability is discussed and two prototype software packages, for supporting both uncertainty evaluation and risk assessment, are presented.

TL;DR: An experimental method for the estimation of nonlinearity, testing and calibrating of the different thermocouple types using artificial neural network (ANN) based algorithms integrated in a virtual instrument (VI).

TL;DR: In this paper, the effect of varying CMM standard uncertainty on the mean and uncertainty interval width of all parameters has been shown graphically, and the complete numerical results are provided for one case, which can serve as reference data.

TL;DR: In this paper, a hand-held toluene gas sensor was developed for the control and prevention of sick building syndrome (SBS) using a photo diode and a light emitting diode.

TL;DR: In this article, a new lead wire compensation technique is presented for conventional two wire resistance temperature detectors (RTDs), which can accommodate temperature variations that the lead wires may be subjected to in industrial environments.

TL;DR: In this paper, the authors applied a Brillouin-OTDR, which is a fiber optic distributed strain sensor, to measure the stress of four post-tensioning cables.

TL;DR: In this article, the authors apply Bayesian decision-making approaches to conformity assessment, using a loss function to quantify the cost of wrong decisions and deriving optimal decision rules that minimise the expected loss.

TL;DR: New strategies to inspect specular and painted surfaces are presented, where different intensity patterns are systematically generated in the environment of the surface such that these are reflected in the surface and captured by a camera.

TL;DR: A deterministic theory of the ideal measurement is presented first, then its probabilistic counterpart is developed, and a full set of proofs is included in which the set of objects is finite.

TL;DR: In this article, a fiber-optic thermometer with extremely wide temperature range is considered to be produced by the combination of the temperature dependence of the fluorescence lifetime and the thermal radiation from rare-earth garnet, Y 3 Al 5 O 12, doped with Cr 2 O 3 (Cr-doped YAG).

TL;DR: In this paper, the authors introduce several alternatives for laboratories, notably those based on intra-laboratory and inter-labelling approaches, which comply with the concepts and recommendations of the Guide to the expression of uncertainty in measurement (GUM).

TL;DR: In this paper, a new encoder-like capacitive sensor filled with dielectric material is proposed for measuring relatively long range displacements with high accuracy regardless of the gap alignment of the sensor.

TL;DR: It is shown that the intelligent CADC (ICADC) built on this principle most efficiently utilise the resources of their analogue and digital parts, and their performance may achieve theoretically available upper boundaries.

TL;DR: Results of analysis of simulation analysis of uncertainty of the ThermaCAM 595 infrared camera measurement path and processing algorithm can be useful in the numerical modeling of temperature distributions.

TL;DR: In this paper, the authors present a cost-based approach for conformity assessment, where the costs of analysis are balanced against the costs associated with the consequences of incorrect decision-making.

TL;DR: In this article, the problem of estimating a measurand based on a sequence of measurements has been considered and an alternative approach based on the principle of generalized inference has been proposed.

TL;DR: A few typical manufactured surfaces and their reference surfaces established by wavelet filter are further analyzed by random process techniques to bring out the waviness content and phase matching.

TL;DR: In this article, the authors describe the design, computer simulation and experimental evaluation of a novel optical tomography instrumentation system that has been recently developed for the measurement of concentration profile and mass flow rate of particles in a gravity chute convey pipeline.

TL;DR: In this article, a simple change to the experimental set-up can produce a signal that has an approximately trapezoidal profile, which produces a much smaller error than for square wave modulation.

TL;DR: Wavelets and wavelet packets are used to detect and characterize alarm signals produced by termites using a set of synthetics modelled by mixing the real acquired transients with computer generated noise processes.

TL;DR: In this article, the authors measured the natural frequencies of rotating disk platters with the help of capacitance type of probe and found that the major noise source in the lower speed hard disk drive was the actuator arm fly over the platter whereas in the case of higher speed drives, the main source was the disk platter air flutter noise.

TL;DR: In this article, the authors present a new engineering curriculum at the Universite catholique de Louvain in Belgium with a modern educational approach which strongly emphasizes active learning based on projects and problems.

TL;DR: In this article, the authors discuss problems and solutions, using the attributes paper pulp quality and smell as illustrations, and propose solutions to solve their lack of traceability, for example round-robin rings, but they must be handled with care.

TL;DR: In this article, the authors developed a finite element model for a scale crane rig in the laboratory such that the dynamic characteristics of the crane rig can be predicted from the relevant features of the developed finite element models.