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Condition Monitoring Of Machine Tool Feed Drives And Methods For The Estimation Of Remaining Useful Life
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Book Synopsis Condition Monitoring of Machine Tool Feed Drives and Methods for the Estimation of Remaining Useful Life by : Maximilian Johann Florian Benker
Download or read book Condition Monitoring of Machine Tool Feed Drives and Methods for the Estimation of Remaining Useful Life written by Maximilian Johann Florian Benker and published by utzverlag GmbH. This book was released on 2024-01-31 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Cyber-Physical Systems: Intelligent Models and Algorithms by : Alla G. Kravets
Download or read book Cyber-Physical Systems: Intelligent Models and Algorithms written by Alla G. Kravets and published by Springer Nature. This book was released on 2022-03-29 with total page 277 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is devoted to intelligent models and algorithms as the core components of cyber-physical systems. The complexity of cyber-physical systems developing and deploying requires new approaches to its modelling and design. Presents results in the field of modelling technologies that leverage the exploitation of artificial intelligence, including artificial general intelligence (AGI) and weak artificial intelligence. Provides scientific, practical, and methodological approaches based on bio-inspired methods, fuzzy models and algorithms, predictive modelling, computer vision and image processing. The target audience of the book are practitioners, enterprises representatives, scientists, PhD and Master students who perform scientific research or applications of intelligent models and algorithms in cyber-physical systems for various domains.
Book Synopsis Handbook of Condition Monitoring by : A. Davies
Download or read book Handbook of Condition Monitoring written by A. Davies and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 571 pages. Available in PDF, EPUB and Kindle. Book excerpt: In today's competitive climate the economies of production have become a critical factor for all manufacturing companies. For this reason, achieving cost-effective plant maintenance is highly important. In this context monitoring plays a vital role. The purpose of this book is to inform readers about techniques currently available in the field of condition monitoring, and the methodology used in their application. With contributions from experts throughout the world, the Handbook of Condition Monitoring addresses the four major technique areas in condition monitoring in addition to the latest developments in condition monitoring research. Significantly, the Handbook of Condition Monitoring includes the following features: comprehensive coverage of the full range of techniques and methodologies accepted knowledge and new developments both technical and managerial content. This is the essential reference book for maintenance technicians, engineers, managers and researchers as well as graduate students involved in manufacturing and mechanical engineering, and condition monitoring.
Book Synopsis Machinery Condition Monitoring by : Amiya Ranjan Mohanty
Download or read book Machinery Condition Monitoring written by Amiya Ranjan Mohanty and published by CRC Press. This book was released on 2014-12-22 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt: Find the Fault in the Machines Drawing on the author’s more than two decades of experience with machinery condition monitoring and consulting for industries in India and abroad, Machinery Condition Monitoring: Principles and Practices introduces the practicing engineer to the techniques used to effectively detect and diagnose faults in machines. Providing the working principle behind the instruments, the important elements of machines as well as the technique to understand their conditions, this text presents every available method of machine fault detection occurring in machines in general, and rotating machines in particular. A Single-Source Solution for Practice Machinery Conditioning Monitoring Since vibration is one of the most widely used fault detection techniques, the book offers an assessment of vibration analysis and rotor-dynamics. It also covers the techniques of wear and debris analysis, and motor current signature analysis to detect faults in rotating mechanical systems as well as thermography, the nondestructive test NDT techniques (ultrasonics and radiography), and additional methods. The author includes relevant case studies from his own experience spanning over the past 20 years, and detailing practical fault diagnosis exercises involving various industries ranging from steel and cement plants to gas turbine driven frigates. While mathematics is kept to a minimum, he also provides worked examples and MATLAB® codes. This book contains 15 chapters and provides topical information that includes: A brief overview of the maintenance techniques Fundamentals of machinery vibration and rotor dynamics Basics of signal processing and instrumentation, which are essential for monitoring the health of machines Requirements of vibration monitoring and noise monitoring Electrical machinery faults Thermography for condition monitoring Techniques of wear debris analysis and some of the nondestructive test (NDT) techniques for condition monitoring like ultrasonics and radiography Machine tool condition monitoring Engineering failure analysis Several case studies, mostly on failure analysis, from the author’s consulting experience Machinery Condition Monitoring: Principles and Practices presents the latest techniques in fault diagnosis and prognosis, provides many real-life practical examples, and empowers you to diagnose the faults in machines all on your own.
Book Synopsis From Deterioration Modeling to Remaining Useful Life Control by : Diego Jair Rodriguez obando
Download or read book From Deterioration Modeling to Remaining Useful Life Control written by Diego Jair Rodriguez obando and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Remaining Useful Lifetime (RUL) can be simply defined as a prediction of the remaining time that a system is able to perform its intended function, from the current time to the final failure. This predicted time mostly depends on the state of deterioration of the system components and their expected future operating conditions. Thus, the RUL prediction is an uncertain process and its control is not trivial task.In general, the purpose for predicting the RUL is to influence decision-making for the system. In this dissertation a comprehensive framework for controlling the RUL is presented. Model uncertainties as well as system disturbances have been considered into the proposed framework. Issues as uncertainty treatment and inclusion of RUL objectives in the control strategy are studied from the modeling until a final global control architecture. It is shown that the RUL can be predicted from a suitable estimation of the deterioration, and from hypothesis on the future operation conditions. Friction drive systems are used for illustrating the usefulness of the aforementioned global architecture. For this kind of system, the friction is the source of motion and at the same time the source of deterioration. This double characteristic of friction is a motivation for controlling automatically the deterioration of the system by keeping a trade-off, between motion requirements and desired RUL values. In this thesis, a new control-oriented model for friction drive systems, which includes a dynamical model of the deterioration is proposed. The amount of deterioration has been considered as a function of the dissipated energy, at the contact surface, during the mechanical power transmission. An approach to estimate the current deterioration condition of a friction drive system is proposed. The approach is based on an Extended Kalman Filter (EKF) which uses an augmented model including the mechanical dynamical system and the deterioration dynamics. At every time instant, the EKF also provides intervals which surely includes the actual deterioration value which a given probability. A new architecture for controlling the RUL is proposed, which includes: a deterioration condition monitoring system (for instance the proposed EKF), a system operation condition estimator, a RUL controller system, and a RUL actuation principle. The operation condition estimator is based on the assumption that it is possible quantify certain characteristics of the motion requirements, for instance the duty cycle of motor torques. The RUL controller uses a cost function that weights the motion requirements and the desired RUL values to modify a varying-parameter filter, used here as the RUL-actuating-principle. The RUL-actuating-principle is based on a modification of the demanded torques, coming from a possible motion controller system. Preliminary results show that it is possible to control de RUL according to the proposed theoretical framework.
Book Synopsis Vibration-based Condition Monitoring by : Robert Bond Randall
Download or read book Vibration-based Condition Monitoring written by Robert Bond Randall and published by John Wiley & Sons. This book was released on 2011-03-25 with total page 409 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Without doubt the best modern and up-to-date text on the topic, wirtten by one of the world leading experts in the field. Should be on the desk of any practitioner or researcher involved in the field of Machine Condition Monitoring" Simon Braun, Israel Institute of Technology Explaining complex ideas in an easy to understand way, Vibration-based Condition Monitoring provides a comprehensive survey of the application of vibration analysis to the condition monitoring of machines. Reflecting the natural progression of these systems by presenting the fundamental material and then moving onto detection, diagnosis and prognosis, Randall presents classic and state-of-the-art research results that cover vibration signals from rotating and reciprocating machines; basic signal processing techniques; fault detection; diagnostic techniques, and prognostics. Developed out of notes for a course in machine condition monitoring given by Robert Bond Randall over ten years at the University of New South Wales, Vibration-based Condition Monitoring: Industrial, Aerospace and Automotive Applications is essential reading for graduate and postgraduate students/ researchers in machine condition monitoring and diagnostics as well as condition monitoring practitioners and machine manufacturers who want to include a machine monitoring service with their product. Includes a number of exercises for each chapter, many based on Matlab, to illustrate basic points as well as to facilitate the use of the book as a textbook for courses in the topic. Accompanied by a website www.wiley.com/go/randall housing exercises along with data sets and implementation code in Matlab for some of the methods as well as other pedagogical aids. Authored by an internationally recognised authority in the area of condition monitoring.
Download or read book Twin-Control written by Mikel Armendia and published by Springer. This book was released on 2019-01-05 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: This open access book summarizes the results of the European research project “Twin-model based virtual manufacturing for machine tool-process simulation and control” (Twin-Control). The first part reviews the applications of ICTs in machine tools and manufacturing, from a scientific and industrial point of view, and introduces the Twin-Control approach, while Part 2 discusses the development of a digital twin of machine tools. The third part addresses the monitoring and data management infrastructure of machines and manufacturing processes and numerous applications of energy monitoring. Part 4 then highlights various features developed in the project by combining the developments covered in Parts 3 and 4 to control the manufacturing processes applying the so-called CPSs. Lastly, Part 5 presents a complete validation of Twin-Control features in two key industrial sectors: aerospace and automotive. The book offers a representative overview of the latest trends in the manufacturing industry, with a focus on machine tools.
Book Synopsis Tool Condition Monitoring Using the Hilbert-Huang Transform by : Trent Furlong
Download or read book Tool Condition Monitoring Using the Hilbert-Huang Transform written by Trent Furlong and published by . This book was released on 2021 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Machine maintenance is one of the biggest contributors of wasteful resources and inefficient productivity in industry. Machining tools contribute greatly towards maintenance costs because if not properly maintained they can damage a workpiece and ensue additional costs and time. Thus, determining a machining tool's condition at any given time is highly desirable in keeping productivity high while reducing maintenance costs. Research in predictive maintenance, or condition-based maintenance, use various sensors and signal processing techniques for different machine tools, machining parameters, and tool-to-workpiece interactions to determine what indicators most likely contribute to tool wear and damage. The Hilbert-Huang transform (HHT)--a fairly new signal processing technique known for its benefits in analyzing nonlinear and non-stationary phenomena--is being used more in predictive maintenance, but still lacks extensive testing. Other benefits of the HHT include time localization of frequency and energy content; something lost in Fourier analysis--a commonly used technique--which compensates locality with resolution in either time or frequency. The purpose of this thesis is to demonstrate the capabilities of using the Hilbert-Huang transform for tool condition monitoring (TCM)--a subset of condition-based monitoring--in determining a drill bit's condition by analyzing vibration and motor current data measured while drilling. The HHT's marginal Hilbert spectrum (MHS) is compared to the power spectral density results of each sensor showcasing their similarities and differences, namely the lack of spurious harmonics in the MHS and identifying trends in prominent frequency content over the tool's life. The peak value of the MHS, [eta]_1, and the integral of the MHS, [eta]_2, are defined as possible HHT tool wear indicators. Common statistical factors used as condition indicators (e.g. RMS, kurtosis, crest factor, etc.) are used to describe a sensor's time series behavior and to verify the defined HHT indicators using Parseval's theorem. Tri-axial vibration and feed and spindle motor current data was collected from a Haas VF-4 computer numerical control (CNC) machine using multiple drill bits on 1" thick, square plates of varying hardness. Energy leakage caused by the HHT greatly reduces the effectiveness of using [eta]_1 and [eta]_2 as reliable condition indicators. This is primarily seen in the motor current data, but more so from the feed motor. The vibration data proved to be much less prone to energy leakage from the HHT, and gave values of [eta]_1 and [eta]_2 consistent in behavior with the statistical data--giving the HHT the added benefit of viewing frequency content--assuming Parseval's theorem is satisfied. Thus, the HHT's effectiveness for TCM is dependent on the induced energy leakage, which in turn should be monitored and reduced by proper preprocessing whenever possible.
Book Synopsis Implementation Strategies and Tools for Condition Based Maintenance at Nuclear Power Plants by : International Atomic Energy Agency
Download or read book Implementation Strategies and Tools for Condition Based Maintenance at Nuclear Power Plants written by International Atomic Energy Agency and published by IAEA. This book was released on 2007 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: There is a need to optimise the maintenance of nuclear power plants, both to improve reliability and increase competitiveness. The tendency is to move from preventative (time based) maintenance to one dependent on the condition of plant and its components. This publication collects and analyses proven condition based maintenance strategies and techniques in Member States as well as selected papers on maintenance optimisation.
Book Synopsis On-line Tool Condition Monitoring in Milling by : Frank Richter
Download or read book On-line Tool Condition Monitoring in Milling written by Frank Richter and published by . This book was released on 1988 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Condition Monitoring of Mechanical Drives by : Pavle Boškoski
Download or read book Condition Monitoring of Mechanical Drives written by Pavle Boškoski and published by . This book was released on 2011 with total page 117 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Coatings Tribology written by K. Holmberg and published by Elsevier. This book was released on 1994-07-15 with total page 457 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a general view on thin surface coatings used for tribological applications and it is based on the current state of understanding. The mechanisms of friction and wear in sliding and rolling contacts of coated surfaces are described. Basic information on coating techniques, tribology and surface mechanisms is given. Based on collected experimental works information is given on the properties of thin soft coatings, such as polymer, lamellar solid and soft metal coatings; thin hard coatings, such as nitride, carbide, oxide, boride and diamond and diamond-like coatings; and multi-component and multi-layer coatings. The influence of interface layers and lubricants is highlighted. The methods available for characterization of coated surfaces and for mechanical and chemical evaluation of their tribological properties are described. Tribological evaluation methods for accelerated and field testing and the need for standardization of quality assurance procedures are discussed. A methodology for the selection of thin coatings for tribological applications is presented and knowledge based expert system approaches for coating selection are reviewed. For different application examples, the basic tribological contact mechanisms are described and the possibilities for improving their tribological properties by using surface coatings are discussed. The application examples include sliding and rolling bearings, gears, tools for cutting and forming, erosion resistant applications, magnetic recording systems and bio-medical implants.
Book Synopsis The Stability and Damping of Machine Tool Feed Drives by : Melvyn Burdekin
Download or read book The Stability and Damping of Machine Tool Feed Drives written by Melvyn Burdekin and published by . This book was released on 1968 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bulletin of the Atomic Scientists by :
Download or read book Bulletin of the Atomic Scientists written by and published by . This book was released on 1970-12 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Bulletin of the Atomic Scientists is the premier public resource on scientific and technological developments that impact global security. Founded by Manhattan Project Scientists, the Bulletin's iconic "Doomsday Clock" stimulates solutions for a safer world.
Book Synopsis Development of Printed Cross-functional Sensors for Gearbox Lubricant Prognostics by : John Omondi Manyala
Download or read book Development of Printed Cross-functional Sensors for Gearbox Lubricant Prognostics written by John Omondi Manyala and published by . This book was released on 2016 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lubricant oil degradation is a major cause of failures in transportation machinery such as pumps, engines, and gearboxes. Proactive oil maintenance techniques such as the off-line oil sampling for laboratory analysis are not only costly but are also susceptible to various influences during the oil sampling, transportation and testing. In this study, an on-line oil condition monitoring system is presented with an integrated predictive prognostic scheme, describing the evolution in time of the identified fault indicators for purposes of estimating the remaining useful life of oil in real-time inside the gearbox. The proposed methodology facilitates on-demand gearbox maintenance rather than the conventional rigid routine inspections, which improves the ecological and economic efficiency by minimizing the vehicle's downtime and maximizing productivity. One of the challenges of an on-line gearbox lubricant condition monitoring for improved prognostic accuracy, is the extraction of useful information from signals containing contributions from many dynamic parameters and embedded noise, while remaining innocuous to the lubrication system. In this study, extensive theoretical analysis and experimental work has been conducted to evaluate the lubricant oil degradation as it ages under various operating regimes, including the origins, propagation mechanisms and the effects of primary contaminants, namely: oxidative degradation, water and particle contamination. A monitoring system for particle contaminants in oil has been investigated, a prototype system has been developed using a Hall effect transducer and prototype system has been successfully characterized in a simulated gearbox environment. A commercially available multi-functional sensor comprising of a tuning fork resonator, humidity sensor and temperature sensor has been adapted for oil viscosity, water content and oil temperature monitoring respectively, in a harsh gearbox environment. The experimental work is presented including a detailed description of the tests' set-up and the measurement results. The results have been shown to validate theoretical predictions and have also been compared against established off-site laboratory techniques to validate the accuracy of the chosen oil condition monitoring methodology. The effects of concurrent multiple contaminants have also been investigated to characterize the susceptibility of the monitored parameters in the presence of more than one contaminant. Bayesian probabilistic estimation technique called particle filtering has been applied for on-line estimation and prediction of an evolving set of parameters by modeling the hypothesis uncertainty of a dynamic system using recursive filtering algorithms. Physics-based models have been developed empirically to augment experimental data in order to quantify the relationship between the identified lubricant contaminants and the gearbox performance metrics. Mathematical concepts behind particle filtering algorithms have been presented along with the algorithms implementation. Several case studies have been conducted to simulate various industrial scenarios to validate the accuracy of the chosen oil condition monitoring methodology and the robustness of the developed novel physics models in predicting the remaining useful life using both computer simulation and physical experiments.
Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1987 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bulletin of the Atomic Scientists by :
Download or read book Bulletin of the Atomic Scientists written by and published by . This book was released on 1961-05 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Bulletin of the Atomic Scientists is the premier public resource on scientific and technological developments that impact global security. Founded by Manhattan Project Scientists, the Bulletin's iconic "Doomsday Clock" stimulates solutions for a safer world.
