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Author: Paul E. Green
Publisher:
ISBN:
Category : Infrared imaging
Languages : en
Pages : 33
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Book Description
The goal of this study was to use temperature measurements derived from infrared cameras to identify trucks with potential brake, tire, or hub defects. Data were collected at inspection sites on six different days and vehicles were subjected to CVSA inspections. Based on the inspections, axle ends were classified into three brake problem categories: yes, no, maybe. Subsequently, the data were analyzed in order to find associations between the temperature measurements and the brake problem classifications. Metrics were developed to identify outliers or large variation in temperatures within or between trucks. Many of the measures focus on differences between axles, left side and right side, and single outlying temperatures. The analysis is restricted to trucks with five axles. Various truck and environment variables were recorded. The maximum brake temperature was most closely associated with the brake problem variable. The coefficient of variation and standard deviation identified ten of the fourteen trucks classified with at least one brake problem correctly. In conjunction with other metrics, additional trucks with brake problems were also identified. Associations between trucks with single outlying temperatures on axle ends and brake problem classifications were not strong. However, it is possible that these outliers could be indicative of brake problems not captured by results produced from inspections.
Author: Paul E. Green
Publisher:
ISBN:
Category : Infrared imaging
Languages : en
Pages : 33
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Book Description
The goal of this study was to use temperature measurements derived from infrared cameras to identify trucks with potential brake, tire, or hub defects. Data were collected at inspection sites on six different days and vehicles were subjected to CVSA inspections. Based on the inspections, axle ends were classified into three brake problem categories: yes, no, maybe. Subsequently, the data were analyzed in order to find associations between the temperature measurements and the brake problem classifications. Metrics were developed to identify outliers or large variation in temperatures within or between trucks. Many of the measures focus on differences between axles, left side and right side, and single outlying temperatures. The analysis is restricted to trucks with five axles. Various truck and environment variables were recorded. The maximum brake temperature was most closely associated with the brake problem variable. The coefficient of variation and standard deviation identified ten of the fourteen trucks classified with at least one brake problem correctly. In conjunction with other metrics, additional trucks with brake problems were also identified. Associations between trucks with single outlying temperatures on axle ends and brake problem classifications were not strong. However, it is possible that these outliers could be indicative of brake problems not captured by results produced from inspections.
Author: Raghu Prakash
Publisher: BoD – Books on Demand
ISBN: 9535102427
Category : Mathematics
Languages : en
Pages : 250
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Book Description
Infrared Thermography (IRT) is commonly as a NDE tool to identify damages and provide remedial action. The fields of application are vast, such as, materials science, life sciences and applied engineering. This book offers a collection of ten chapters with three major sections - relating to application of infrared thermography to study problems in materials science, agriculture, veterinary and sports fields as well as in engineering applications. Both mathematical modeling and experimental aspects of IRT are evenly discussed in this book. It is our sincere hope that the book meets the requirements of researchers in the domain and inspires more researchers to study IRT.
Author: Waldemar Minkina
Publisher: John Wiley & Sons
ISBN: 0470747188
Category : Technology & Engineering
Languages : en
Pages : 220
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Book Description
In Infrared Thermography, the authors discuss the sources of uncertainty, including how to quantify these sources, associated with the use of thermal imagers. This book explains the common misunderstandings in the interpretation of temperature measurements, and provides a metrological evaluation of commercially available infrared cameras. It suggests how to best estimate the accuracy of thermal imaging instruments, whilst considering the level of accuracy attributed to measurements from these thermal imagers. Key features: Begins with an introduction to uncertainties and radiance terms before moving onto the issues surrounding thermal imaging. Deals with the basic issues of thermal imager measurements such as the law of heat exchange by radiation and emissivity. Describes a typical processing algorithm of the measurement path for an example infrared camera. Discusses measurement error analysis of a thermal imaging system. Considers the results of simulation research of thermography uncertainty. Includes an accompanying website which hosts MATLAB® code. Infrared Thermography is primarily aimed at quantitative thermographers, and manufacturers, vendors and users of thermal imagers. This book is also of interest to senior undergraduate and postgraduate students across a range of disciplines such as electrical, mechanical and civil engineering, computer science, and biomedicine.
Author: Geoffrey Ogadimma Asiegbu
Publisher:
ISBN:
Category : Electric power distribution
Languages : en
Pages : 126
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Book Description
Electrical power equipment and components are vital constituent portions of human existence. They are found virtually in every domestic home and manufacturing industries. These electrical power equipment, operates at a temperature above absolute zero, certainly emit infrared radiation. In some power distribution systems, existing station equipment could no longer withstand the short circuit current capacity causing equipment break down. The electrical equipment failures can be avoided if the temperature threshold is detected in order to take timely corrective action. Quality control and part inspection have done considerably well in the area of manufacturing but not yet gotten to its fully robust thermal imaging technology application. Thermal image is a term comes from the infrared thermography. It has gained its popularity in the last few decades over other predictive maintenance techniques due to its many advantages such as contact-less, easy to interpret the thermal data, large area of inspection as well as free from dangerous radiation. This research project proposed defect detection on electrical power equipment using thermal imaging technology. The aim is to study the thermal characteristic of electrical power equipment, secondly, to design defect detection technique and make a fault decision as well as comparing results with other defect detection techniques and international thermal evaluation standard. A thermal imager is used to acquire thermal images of the tested electrical facilities under various operating conditions. The thermal image in RGB color space is normalized and morphologically dissected using image mean, variance, and covariance which is applied on the mixtures of Gaussian Probability Distribution Function (GPDF) through which threshold values were determined. Using the threshold values similar pixels are connected via maximum likelihood criterion been function of short circuit OR logic operator. The predetermined threshold values are optimized using Receiver Operating Characteristic (ROC) curve and the area under convex hull. Regions of electrical thermogram are segmented using the optimal threshold values. Various features in the infrared thermal (IRT) image are extracted in order to detect anomalies. Classification and decision are made in terms of colors and temperature difference values. Matlab image processing software is used to implement these procedures. Application of this system is quite simple, user friendly, time and cost effective. In conclusion, a total of 111 different electrical power distribution facilities was experimentally inspected. Within the limits of experimental errors, the results of the analysis showed that 99.9% sensitivity and 99.72% accuracy was achieved with an error rate of 0.28 that was attributed to mistakes due to over and less caution during experimental thermal inspection of electrical facilities. The results suggested that, the method provides an accurate identification of defective parts can be extended for further applications. The results also suggest that the system works well enough to help improve the value and efficiency of consumable electrical power equipment reducing the number of faults in the power distribution line, ensuring safety of the workers and users of electricity, protecting electrical power facilities from damage due to over-heating or fire. Above all, testing, inspection and preventive maintenance work become safer, easier, and faster with a reasonably high degree of accuracy with this result-oriented defect detection scrutiny system on electrical power facilities.
Author: Habib, Maki K.
Publisher: IGI Global
ISBN: 1799801381
Category : Technology & Engineering
Languages : en
Pages : 466
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Book Description
Advanced research in the field of mechatronics and robotics represents a unifying interdisciplinary and intelligent engineering science paradigm. It is a holistic, concurrent, and interdisciplinary engineering science that identifies novel possibilities of synergizing and fusing different disciplines. The Handbook of Research on Advanced Mechatronic Systems and Intelligent Robotics is a collection of innovative research on the methods and applications of knowledge in both theoretical and practical skills of intelligent robotics and mechatronics. While highlighting topics including green technology, machine learning, and virtual manufacturing, this book is ideally designed for researchers, students, engineers, and computer practitioners seeking current research on developing innovative ideas for intelligent robotics and autonomous and smart interdisciplinary mechatronic products.
Author: Fabio Biondini
Publisher: CRC Press
ISBN: 1000997308
Category : Technology & Engineering
Languages : en
Pages : 6293
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Book Description
Life-Cycle of Structures and Infrastructure Systems contains the lectures and papers presented at IALCCE 2023- The Eighth International Symposium on Life-Cycle Civil Engineering, held at Politecnico di Milano, Milan, Italy, 2-6 July, 2023. This book contains the full papers of 514 contributions presented at IALCCE 2023, including the Fazlur R. Khan Plenary Lecture, nine Keynote Lectures, and 504 technical papers from 45 countries. The papers cover recent advances and cutting-edge research in the field of life-cycle civil engineering, including emerging concepts and innovative applications related to life-cycle design, assessment, inspection, monitoring, repair, maintenance, rehabilitation, and management of structures and infrastructure systems under uncertainty. Major topics covered include life-cycle safety, reliability, risk, resilience and sustainability, life-cycle damaging processes, life-cycle design and assessment, life-cycle inspection and monitoring, life-cycle maintenance and management, life-cycle performance of special structures, life-cycle cost of structures and infrastructure systems, and life-cycle-oriented computational tools, among others. This Open Access Book provides both an up-to-date overview of the field of life-cycle civil engineering and significant contributions to the process of making more rational decisions to mitigate the life-cycle risk and improve the life-cycle reliability, resilience, and sustainability of structures and infrastructure systems exposed to multiple natural and human-made hazards in a changing climate. It will serve as a valuable reference to all concerned with life-cycle of civil engineering systems, including students, researchers, practicioners, consultants, contractors, decision makers, and representatives of managing bodies and public authorities from all branches of civil engineering.
Author: John C. Price
Publisher: CRC Press
ISBN: 9783718602896
Category : Atmospheric temperature
Languages : en
Pages : 208
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Book Description
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 702
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Author:
Publisher:
ISBN:
Category : Economic assistance, Domestic
Languages : en
Pages : 1100
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Book Description
Identifies and describes specific government assistance opportunities such as loans, grants, counseling, and procurement contracts available under many agencies and programs.
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 220
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Book Description
