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Articles 361 - 390 of 456

Full-Text Articles in Engineering

Cyclic Deformation Of Advanced High-Strength Steels: Mechanical Behavior And Microstructural Analysis, Timothy B. Hilditch, Ilana B. Timokhina, Leigh T. Robertson, E V. Pereloma, Peter D. Hodgson Jan 2009

Cyclic Deformation Of Advanced High-Strength Steels: Mechanical Behavior And Microstructural Analysis, Timothy B. Hilditch, Ilana B. Timokhina, Leigh T. Robertson, E V. Pereloma, Peter D. Hodgson

Faculty of Engineering - Papers (Archive)

The fatigue properties of multiphase steels are an important consideration in the automotive industry. The different microstructural phases present in these steels can influence the strain life and cyclic stabilized strength of the material due to the way in which these phases accommodate the applied cyclic strain. Fully reversed strain-controlled low-cycle fatigue tests have been used to determine the mechanical fatigue performance of a dual-phase (DP) 590 and transformation-induced plasticity (TRIP) 780 steel, with transmission electron microscopy (TEM) used to examine the deformed microstructures. It is shown that the higher strain life and cyclic stabilized strength of the TRIP steel …

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Survey Response As Organisational Behaviour: An Analysis Of The Annual Enterprise Survey, 2003-2007, Walter R. Davis, Nathaniel Pihama Jan 2009

Survey Response As Organisational Behaviour: An Analysis Of The Annual Enterprise Survey, 2003-2007, Walter R. Davis, Nathaniel Pihama

Faculty of Engineering and Information Sciences - Papers: Part A

Non-response is a matter of great concern to national statistical offices and a key issue for any survey because it can introduce bias to survey estimation. However, in this presentation, we focus on a business's decision to participate in a survey as an example of organisational behaviour and draw on basic organisational theory to explain why businesses may not respond to surveys (eg Tomaskovic-Devey et al 1994). The data are drawn from the Statistics New Zealand Respondent Management System, which links the response history of individual businesses in all Statistics NZ surveys with information from the Statistics NZ Business Frame. …

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Consolidation Analysis Of A Stratified Soil With Vertical And Horizontal Drainage Using The Spectral Method, Rohan Walker, Buddhima Indraratna Jan 2009

Consolidation Analysis Of A Stratified Soil With Vertical And Horizontal Drainage Using The Spectral Method, Rohan Walker, Buddhima Indraratna

Faculty of Engineering - Papers (Archive)

A novel use of the spectral method to determine excess pore water pressure during vertical consolidation of multi-layered soil with time constant material properties is presented, considering a unit cell with combined vertical and radial drainage. Equal strain conditions are assumed in the analysis. The novel adoption of material properties that vary in a linear fashion with depth allows arbitrary distributions of properties to be modelled. By incorporating surcharge and vacuum loading that vary with both depth and time, a wide range of consolidation problems can be analysed. The spectral method is a meshless approach producing a series solution to …

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Qos Analysis For Web Service Composition, Huiyuan Zheng, Weiliang Zhao, Jian Yang, Athman Bouguettaya Jan 2009

Qos Analysis For Web Service Composition, Huiyuan Zheng, Weiliang Zhao, Jian Yang, Athman Bouguettaya

Faculty of Engineering - Papers (Archive)

The quality of service (QoS) is a major concern in the design and management of Web service composition. Existing methods for QoS calculation either do not take the probability of path execution into consideration when QoSs are provided for different execution paths, or do not take different execution paths into consideration when a single integrated QoS is provided for the whole composition. In this paper, a comprehensive QoS analysis approach is proposed that calculates the QoS probability distribution by considering both the execution probability and execution conditions of each path in the service composition. Four types of basic composition patterns …

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Formal Verification Of Urban Traffic System Using The Concept Of Fuzzy Workflow Simulation, Manuj Darbari, Abhay Kumar Srivastava, Sanjay Medhavi Jan 2009

Formal Verification Of Urban Traffic System Using The Concept Of Fuzzy Workflow Simulation, Manuj Darbari, Abhay Kumar Srivastava, Sanjay Medhavi

Journal of International Technology and Information Management

Modeling complex urban traffic system requires extensive use of workflow methodologies which can simulate almost real time traffic situations. Number of studies were done in the field of Urban Traffic Simulation like PLOTS, NETSIM and PALAMICS but none of them could provide a real formal solution. Our paper proposes a methodology using Fuzzy Petri nets for modeling real time traffic system. Fuzzy Petrinets are also visualised and tested by using Flow- Charter and HPSIM software packages. These packages help in providing successive iterations of process model for further refinement.

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Systematic Analysis Of Unknown Integrated Circuits, Michael Brutscheck Jan 2009

Systematic Analysis Of Unknown Integrated Circuits, Michael Brutscheck

Doctoral

In recent years the efficient and structured analysis of unknown CMOS integrated circuits (ICs) has attracted a lot of interest. Over the last decade different and non-invasive strategies have been developed to analyse unknown ICS. However, invasive procedures must always lead to the destruction of the system under investigation. Non-invasive approaches published so far have the disadvantage that ICs are analysed using very complex and very time consuming algorithms. The focus of this thesis is to develop a non-invasive and efficient procedure to determine fully unclassified digital CMOS ICs solely by their input-output behaviour. In this research, automata theory was …

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Analysis Of A Caliche Stiffened Pile Foundation, Richard C. Stone Jr. Jan 2009

Analysis Of A Caliche Stiffened Pile Foundation, Richard C. Stone Jr.

UNLV Theses, Dissertations, Professional Papers, and Capstones

Cemented carbonate deposits (known locally as "caliche") in Las Vegas have been used to support shallow and deep foundations with relatively high bearing pressures compared to soil. Most high rise structures in Las Vegas are founded on either a large mat or a long pile foundation. Recently, a new foundation type consisting of a short pile system bonded to shallow cemented layers was utilized for a large high rise building in Las Vegas and settlements during construction were recorded. The bonding of caliche layers together with short piles forms a caliche stiffened pile (CSP) foundation. The CSP foundation is unique …

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Dynamic Analysis Of Less-Than-Truckload Shipments And Test Method To Simulate This Environment, Sher Paul Singh, E. Joneson, Jay Singh, G. Grewal Dec 2008

Dynamic Analysis Of Less-Than-Truckload Shipments And Test Method To Simulate This Environment, Sher Paul Singh, E. Joneson, Jay Singh, G. Grewal

Industrial Technology and Packaging

This paper provides results from a comprehensive data measurement study that analyzed the vibration dynamics produced inside the trailers used for less-than truckload (LTL) shipments. The trailers used for this segment of the package transportation environment are very different in size and suspension than those used for full truckload shipments. This study measured the vertical, lateral and longitudinal vibration inside a trailer as a function of road surface. In addition, the study developed a video showing freight movement inside the trailer to determine physical displacement and shifting of the loads. A set of recommendations was developed to safely load and …

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Noise Coupling Between Power/Ground Nets Due To Differential Vias Transitions In A Multilayer Pcb, Matteo Cocchini, Jun Fan, Bruce Archambeault, James L. Knighten, Xin Chang, James L. Drewniak, Yaojiang Zhang, Samuel R. Connor Aug 2008

Noise Coupling Between Power/Ground Nets Due To Differential Vias Transitions In A Multilayer Pcb, Matteo Cocchini, Jun Fan, Bruce Archambeault, James L. Knighten, Xin Chang, James L. Drewniak, Yaojiang Zhang, Samuel R. Connor

Electrical and Computer Engineering Faculty Research & Creative Works

Due to the increase in board density, routing traces on different layers becomes a widely used strategy. Through-hole vias are often used to connect these traces. Those vias that penetrate power/ground plane pairs could cause noise coupling between signal and power/ground nets. At the same time, the need for clean signal transmitted to receivers results in a wide use of differential signals. This paper studies the noise coupling mechanism caused by a differential pair of vias penetrating power/ground plane pair using a physics-based via-plane model combined with transmission line models for traces. A 26-layer printed circuit board with a pair …

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Parametric Optimization Design System For A Fluid Domain Assembly, Matthew Jackson Fisher Apr 2008

Parametric Optimization Design System For A Fluid Domain Assembly, Matthew Jackson Fisher

Theses and Dissertations

Automated solid modeling, integrated with computational fluid dynamics (CFD) and optimization of a 3D jet turbine engine has never been accomplished. This is due mainly to the computational power required, and the lack of associative parametric modeling tools and techniques necessary to adjust and optimize the design. As an example, the fluid domain of a simple household fan with three blades may contain 500,000 elements per blade passage. Therefore, a complete turbine engine that includes many stages, with sets of thirty or more blades each, will have hundreds of millions of elements. The fluid domains associated with each blade creates …

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Designing And Setting Up A Process For Assessing Measurement System's Capability, Kiran Namala Feb 2008

Designing And Setting Up A Process For Assessing Measurement System's Capability, Kiran Namala

Culminating Projects in Mechanical and Manufacturing Engineering

Measurement Systems Analysis is a methodology applied to measure the amount of variation in the measurement device. The purpose of conducting the MSA study is to quantify measurement error and to reduce the measurement variation to the maximum possible extent. The study is pursued by referring to various quality control books, papers and experts in this area. Potential problems related to the measurement device (if they exist) would be exposed after this study and recommendations would be made in order to achieve a successful quality improvement.

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Analysis Of Roll Gap Pressure In Sendzimir Mill By Fem, Hai-Liang Yu, Xiang-Hua Liu, Chao Wang, Hae-Doo Park Jan 2008

Analysis Of Roll Gap Pressure In Sendzimir Mill By Fem, Hai-Liang Yu, Xiang-Hua Liu, Chao Wang, Hae-Doo Park

Faculty of Engineering and Information Sciences - Papers: Part A

The acting force on the roll system of Sendzimir mill was analyzed using 3D FEM. The roll gap pressure distribution and the acting force between rolls S and O, rolls O and I, rolls O and J, rolls I and A, rolls I and B, as well as rolls J and B were analyzed. The results showed that the roll gap pressure mainly affected the roll surface layer, 50 mm for backup rolls the roll gap pressure distribution is of double peaks among the work roll, the 1st intermediate roll (IMR), and the 2nd IMR; the maximum value of the …

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Numerical Analysis Of Roll Deflection For Sendzimir Mill, H L. Yu, X H. Liu, G T. Lee, X W. Li, H D. Park Jan 2008

Numerical Analysis Of Roll Deflection For Sendzimir Mill, H L. Yu, X H. Liu, G T. Lee, X W. Li, H D. Park

Faculty of Engineering and Information Sciences - Papers: Part A

The present work introduces a new type of numerical analyzing method: the contact element method with two relative coordinates (CEM). The main characteristic of the procedure is elements meshing on the basis of the contact length between objects and that each element has two relative coordinates. The ordinary expression of this procedure is DX[CXY(i)]=D Y[CYX(i)]. Through this method, the CEM function of the 20-high Sendzimir mill and the deflection function expression of every roll are obtained. A computational software SM4SM for the Sendzimir mill has been developed, by which the deflection condition of rolls S, O, I, and A can …

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Regularized Discriminative Direction For Shape Difference Analysis, Luping Zhou, Richard Hartley, Lei Wang, Paulette Lieby, Nick Barnes Jan 2008

Regularized Discriminative Direction For Shape Difference Analysis, Luping Zhou, Richard Hartley, Lei Wang, Paulette Lieby, Nick Barnes

Faculty of Engineering and Information Sciences - Papers: Part A

The "discriminative direction" has been proven useful to re- veal the subtle difference between two anatomical shape classes. When a shape moves along this direction, its deformation will best manifest the class difference detected by a kernel classifier. However, we observe that such a direction cannot maintain a shape's "anatomical" correctness, in- troducing spurious difference. To overcome this drawback, we develop a regularized discriminative direction by requiring a shape to conform to its population distribution when it deforms along the discriminative direction. Instead of iterative optimization, an analytic solution is pro- vided to directly work out this direction. Experimental study …

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Evolution Analysis Of Low-Cost Iterative Equalization In Coded Linear Systems With Cyclic Prefixes, Xiaojun Yuan, Qinghua Guo, Xiaodong Wang, Li Ping Jan 2008

Evolution Analysis Of Low-Cost Iterative Equalization In Coded Linear Systems With Cyclic Prefixes, Xiaojun Yuan, Qinghua Guo, Xiaodong Wang, Li Ping

Faculty of Engineering and Information Sciences - Papers: Part A

This paper is concerned with the low-cost iterative equalization/detection principles for coded linear systems with cyclic prefixes. Turbo frequency-domain-equalization (FDE) is applied to systems that may contain the joint effect of multiple-access interference (MAI), cross-antenna interference (CAI) and inter-symbol interference (ISI). We develop an SNK-variance evolution technique for the performance evaluation of the proposed systems. Numerical results in various channel environments demonstrate excellent agreement between the predicted and simulated system performance. © 2008 IEEE.

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Performance Analysis Of Ofdm-Idma Systems With Peak-Power Limitation, Jun Tong, Qinghua Guo, Li Ping Jan 2008

Performance Analysis Of Ofdm-Idma Systems With Peak-Power Limitation, Jun Tong, Qinghua Guo, Li Ping

Faculty of Engineering and Information Sciences - Papers: Part A

This paper is concerned with orthogonal frequency-division multiplexing interleave-division multiple-access (OFDM-IDMA) systems over frequency-selective fading channels. Deliberate clipping is applied to reduce the peak-to-average power ratio (PAPR) of each user's transmitted signal. An iterative multiuser detection (MUD) technique is developed to recover the performance loss due to clipping. A semi-analytical signal-to- noise ratio (SNR) evolution technique is proposed, which can provide quick and accurate prediction of the iterative MUD performance. Numerical results show that the performance of OFDM-IDMA is not sensitive to the frequency selectivity of channels, and OFDM-IDMA is more power-efficient than other alternative multi-carrier transmission techniques. © 2008 …

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An Analysis Of The Criteria For Evaluating Adequate Theories Of Computation, Nir Fresco Jan 2008

An Analysis Of The Criteria For Evaluating Adequate Theories Of Computation, Nir Fresco

Faculty of Engineering and Information Sciences - Papers: Part A

This paper deals with the question: What are the criteria that an adequate theory of computation has to meet? (1) Smith's answer: it has to meet the empirical criterion (i.e. doing justice to computational practice), the conceptual criterion (i.e. explaining all the underlying concepts) and the cognitive criterion (i.e. providing solid grounds for computationalism). (2) Piccinini's answer: it has to meet the objectivity criterion (i.e. identifying computation as a matter of fact), the explanation criterion (i.e. explaining the computer's behaviour), the right things compute criterion, the miscomputation criterion (i.e. accounting for malfunctions), the taxonomy criterion (i.e. distinguishing between different classes …

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Validation Of Particle Flow Through A Conveyor Transfer Hood Via Particle Velocity Analysis, David B. Hastie, Andrew P. Grima, Peter W. Wypych Jan 2008

Validation Of Particle Flow Through A Conveyor Transfer Hood Via Particle Velocity Analysis, David B. Hastie, Andrew P. Grima, Peter W. Wypych

Faculty of Engineering - Papers (Archive)

A critical factor in the design of conveyor transfers is the ability for material to flow at a velocity as close to that of the conveyor belt as possible. If particle velocity increases too much issues such as particle attrition, dust generation, chute wear and excessive noise can arise, whereas if particle velocity were to decrease, stagnation zones could develop, resulting in issues such as spillage or chute blockage. There are numerous methods available in which to analyse particle flow through a conveyor transfer, including; continuum based analytical methods, the discrete element method (DEM) and experimental analysis. This paper will …

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Cfd Analysis Of The Performance Of Blade Cascades For Air Turbines In Oscillating Water Column Wave Energy Conversion Systems, Andrei Gareev, Paul Cooper, Prabuono B. Kosasih Jan 2008

Cfd Analysis Of The Performance Of Blade Cascades For Air Turbines In Oscillating Water Column Wave Energy Conversion Systems, Andrei Gareev, Paul Cooper, Prabuono B. Kosasih

Faculty of Engineering - Papers (Archive)

This paper presents the results of a detailed CFD (Computational Fluid Dynamics) analysis of the performance of blade cascades in reversing flow axial flow turbines for use as power take-off systems in Oscillating Water Column (OWC) Wave Energy Conversion (WEC) systems. In the first part of the paper a fundamental CFD analysis of the lift and drag data for various aerofoil profiles, using a number of different turbulence models, is described and quantitative comparisons are made with experimental data previously published by other researchers. The second part of the paper then describes CFD results of the performance of various rotors …

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Nonlinear Analysis And Behavior Of Concrete-Filled Steel Tubular Beam-Columns, Qing Quan Liang, Muhammad N. S Hadi Jan 2008

Nonlinear Analysis And Behavior Of Concrete-Filled Steel Tubular Beam-Columns, Qing Quan Liang, Muhammad N. S Hadi

Faculty of Engineering - Papers (Archive)

This paper presents a nonlinear fiber element analysis method for predicting the behavior of short concrete-filled steel tubular (CFST) beam-columns under axial load and biaxial bending. Nonlinear constitutive models for confined concrete and structural steel are considered in the fiber element analysis. Efficient secant algorithms are developed to iterate the depth and orientation of the neutral axis within the composite section to satisfy equilibrium conditions. The accuracy of the fiber element method is established by comparisons with existing solutions. The fiber element analysis program developed is employed to study the effects of steel ratios and concrete strengths on the axial …

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Performance Analysis Of Multi-Ary Systems With Iterative Linear Minimum-Mean-Square-Error Detection, Li Ping, Jun Tong, Xiaojun Yuan, Qinghua Guo Jan 2008

Performance Analysis Of Multi-Ary Systems With Iterative Linear Minimum-Mean-Square-Error Detection, Li Ping, Jun Tong, Xiaojun Yuan, Qinghua Guo

Faculty of Engineering and Information Sciences - Papers: Part A

This paper is concerned with coded multi-ary systems over linear channels. Based on a semi-analytical evolution technique, the impact of signaling schemes on the performance of low-cost iterative linear minimum-mean-square-error (LMMSE) detection is studied. It is shown that superposition coded modulation (SCM) maximizes the output signal-to-noise ratio (SNR) of LMMSE detectors. Consequently, SCM may potentially outperform other conventional signaling schemes when LMMSE detectors are used. Numerical examples are provided to verify the theoretical analysis. © 2008 IEEE.

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Analysis Of Information Remaining On Hand Held Devices Offered For Sale On The Second Hand, Andy Jones, Craig Valli, Iain Sutherland Jan 2008

Analysis Of Information Remaining On Hand Held Devices Offered For Sale On The Second Hand, Andy Jones, Craig Valli, Iain Sutherland

Journal of Digital Forensics, Security and Law

The ownership and use of mobile phones, Personal Digital Assistants and other hand held devices is now ubiquitous both for home and business use. The majority of these devices have a high initial cost, a relatively short period before they become obsolescent and a relatively low second hand value. As a result of this, when the devices are replaced, there are indications that they tend to be discarded. As technology has continued to develop, it has led to an increasing diversity in the number and type of devices that are available, and the processing power and the storage capacity of …

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Analysis Of Information Remaining On Hand Held Devices For Sale On The Second Hand Market, Andrew Jones, Craig Valli, Iain Sutherland Jan 2008

Analysis Of Information Remaining On Hand Held Devices For Sale On The Second Hand Market, Andrew Jones, Craig Valli, Iain Sutherland

Research outputs pre 2011

The ownership and use of mobile phones, Personal Digital Assistants and other hand held devices is now ubiquitous both for home and business use. The majority of these devices have a high initial cost, a relatively short period before they become obsolescent and a relatively low second hand value. As a result of this, when the devices are replaced, there are indications that they tend to be discarded. As technology has continued to develop, it has led to an increasing diversity in the number and type of devices that are available, and the processing power and the storage capacity of …

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Analysis Of Particle Motion In A Micro-Fluidic Dielectrophoretic Device, Weihua Li, X Z. Zhang Jan 2007

Analysis Of Particle Motion In A Micro-Fluidic Dielectrophoretic Device, Weihua Li, X Z. Zhang

Faculty of Engineering - Papers (Archive)

Interdigitated microelectrodes have found wide applications in manipulating and/or separating biological particles due to their simple structure and easy implementation. Particle behaviors in such interdigitated microelectrode devices are affected by a number of factors, including particle size, electrical potential, chamber geometry and dielectric properties. This paper presents systematical simulation study of particle behaviors in these devices by considering all these influencing factors. A case study is presented to separate different particles using both positive and negative DEP.

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Strategic Analysis Adaptation Assessment: An Alternative To The Storyline Scenario, Susan Krumdieck, Mohammed Imroz Sohel Jan 2007

Strategic Analysis Adaptation Assessment: An Alternative To The Storyline Scenario, Susan Krumdieck, Mohammed Imroz Sohel

Faculty of Engineering and Information Sciences - Papers: Part A

Scenarios of future trends are widely used by government and international agencies to inform decision-making. While story line scenarios may be useful for business or government thinking, they are not effective at informing engineering research, innovation and design, and add very little to the understanding of sustainability. This paper presents a strategic analysis approach to complex systems, which relies on identification of risks to important activities and wellbeing. This method mimics the actual processes of anthropogenic continuity, where people explore, experiment, learn from success and mistakes, and adapt and evolve. The method is applied to the case study of transportation …

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Security Analysis Of Two Ultra-Lightweight Rfid Authentication Protocols, Tieyan Li, Guilin Wang Jan 2007

Security Analysis Of Two Ultra-Lightweight Rfid Authentication Protocols, Tieyan Li, Guilin Wang

Faculty of Engineering and Information Sciences - Papers: Part A

In this paper, we analyze the security vulnerabilities of two ultra-lightweight RFID mutual authentication protocols: LMAP and M2AP, which are recently proposed by Peris-Lopez et al.We identify two e®ective attacks, namely De-synchronization attack and Full-disclosure attack, against their protocols. The former attack can break the synchro- nization between the RFID reader and the tag in a single protocol run so that they can not authenticate each other in any following protocol runs. The latter attack can disclose all the secret information stored on a tag by interrogating the tag multiple times. Thus it compromises the tag completely. Moreover, we point …

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Evolution Analysis Of Iterative Lmmse-App Detection For Coded Linear System With Cyclic Prefixes, Xiaojun Yuan, Qinghua Guo, Li Ping Jan 2007

Evolution Analysis Of Iterative Lmmse-App Detection For Coded Linear System With Cyclic Prefixes, Xiaojun Yuan, Qinghua Guo, Li Ping

Faculty of Engineering and Information Sciences - Papers: Part A

This paper is concerned with the iterative detection principles for coded linear systems with cyclic prefixes. We derive a matrix-form low-cost fast Fourier transform (FFT) based iterative LMMSE-APP detector and propose an evolution technique for the performance evaluation of the proposed detector. Numerical results show a good match between simulation and evolution prediction. ©2007 IEEE.

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Enhanced Numerical Analysis Of Ground Behaviour Influenced By Tree Root Suction, Behzad Fatahi, Buddhima Indraratna, Hadi Khabbaz Jan 2007

Enhanced Numerical Analysis Of Ground Behaviour Influenced By Tree Root Suction, Behzad Fatahi, Buddhima Indraratna, Hadi Khabbaz

Faculty of Engineering - Papers (Archive)

Tree roots provide three stabilising functions: (a) reinforcement of the soil, (b) dissipation of excess pore pressures, (c) establishing sufficient matric suction to increase the shear strength. This paper looks at the way that vegetation influences soil moisture content distribution, and ground settlement. A theoretical model previously developed by the authors for the rate of tree root water uptake together with an associated numerical simulation is used in this study. Field measurements taken from literature published previously are compared with the authors' numerical model. The predicted results obtained from the numerical analysis, compared favourably with the field measurements, justifying the …

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Design And Analysis Of General And Travelling Dielectrophoresis, T. Kinkeldei, W.H Li Jan 2007

Design And Analysis Of General And Travelling Dielectrophoresis, T. Kinkeldei, W.H Li

Faculty of Engineering - Papers (Archive)

This paper presents the simulation of general and travelling dielectrophoretic forces, as well as the movement of the particles in a sandwich structure micro-device. The electrode geometry of the micro device used for simulation is an interdigitated bar electrode. The simulation method used to solve the equations is based on the least square finite difference method (LSFD). The simulation first calculates all forces acting at any place in the chamber, with these forces the trajectory of a particle can now be proposed. All of the particles parameters like radius, voltage, initial height, etc can easily be changed and the simulation …

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De-Convolution Of Time-Series Data Using Translational Symmetry And Eigenstate Analysis, Craig Moodie, A. K. Tieu, Simon Biddle Jan 2007

De-Convolution Of Time-Series Data Using Translational Symmetry And Eigenstate Analysis, Craig Moodie, A. K. Tieu, Simon Biddle

Faculty of Engineering - Papers (Archive)

Translational Symmetry permits a time invariant matrix (a Ring Matrix) of a time series to be formed. Traditional Eigenvalue/vector and Fast Fourier Transform techniques applied to the Ring Matrix provide views of all the vibration modes, their magnitude and frequency content. The Ring Matrix has many interesting features associated with it that enable it to be used as an additional tool in defining the ‘condition state’ of a bearing. This paper introduces the Ring Matrix as a significant step in the ‘Blind’ deconvolution process. Application of the de-convolution method to vibration data obtained from both a large and small slow …

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