Download or read book Longitudinal Rail Stress Measurement Using Ultrasound written by Yue Yang and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Longitudinal Stress Measurements in Rail written by D. Utrata and published by . This book was released on 1994 with total page 37 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ultrasonic Measurement of Longitudinal Stress in Railroad Rail travel time Variations in Selected Samples written by Teodoro Leon-Salamanca and published by . This book was released on 1983 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Measurement of Thermally induced Longitudinal Stresses in Continuously Welded Rail Using Diffuse Ultrasonic Backscatter written by Christopher M. Kube and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nondestructive Measurement of Longitudinal Rail Stresses written by D. M. EGLE and published by . This book was released on 1974 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: OBJECTIVES ARE (1) TO STUDY EFFECT OF APPLIED NORMAL STRESS ON PROPAGATION OF ULTRASONIC WAVES (ACOUSTO-ELASTIC EFFECT) IN STEEL RAILS, AND (2) TO DEVELOP TECHNIQUE FOR IN-SITU MEASUREMENT OF LONGITUDINAL STRESSES IN RAIL. LOAD FRAME FOR STRESSING RAILS IS BEING DEVELOPED. INSTRUMENTATION FOR MEASURING TRANSIT TIME OF LONGITUDINAL WAVES IN RAIL BY 'SING-AROUND' TECHNIQUE WAS ASSEMBLED. COMPUTER PROGRAMS WERE IMPLEMENTED FOR (1) GENERATING PHASE AND GROUP VELOCITIES OF LAMB WAVES, AND (2) CALCULATING PHASE VELOCITIES IN RECTANGULAR BARS. TRANSMISSION TIMES OF SURFACE WAVE PULSES IN RAILS WERE MEASURED TO ASSESS EFFECTS OF SURFACE COLD WORKING. SURFACE WAVE VELOCITY VERSUS FREQUENCY WAS STUDIED FOR SEVERAL NEW AND USED RAILS. A NEW RAIL WAS DISTINGUISHED FROM A USED ONE, BUT OVERALL SPREAD IN DATA WAS ONLY ABOUT 0.6 PERCENT.
Download or read book Nondestructive Measurement of Longitudinal Rail Stresses written by D. M. Egle and published by . This book was released on 1978 with total page 113 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Residual stress in rails written by Oscar Orringer and published by Springer Science & Business Media. This book was released on 1992-03-15 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: These volumes contain contributions from a conference on the themes of measurement and prediction of residual stress in railroad rails. The first volume features practical railway experience and laboratory tests, while the second one presents theoretical and numerical analyses.
Download or read book Stress Measurement in Rail Using Ultrasonic based Nondestructive Methods and Strain Gage Hole drilling written by D. Utrata and published by . This book was released on 1991 with total page 79 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Vibration based Longitudinal Rail Stress Estimation Exploiting Acoustic Measurement and Machine Learning written by and published by . This book was released on 2020 with total page 41 pages. Available in PDF, EPUB and Kindle. Book excerpt: Safety is of principal concern of the railway industry, and track alignment irregularities can pose risks to the safe operation of trains. The TRB IDEA (Innovations Deserving Exploratory Analysis) Program's Rail Safety IDEA Final Report 41: Vibration-based Longitudinal Rail Stress Estimation Exploiting Acoustic Measurement and Machine Learning explores an innovative approach for stress state prediction of continuous welded rail using contactless acoustic sensing and machine learning methods. An impulse-based experimental device was designed and deployed to excite multiple vibrational modes in rail simultaneously at one time.
Download or read book Determination of Longitudinal Stress in Rails written by Stefan HURLEBAUS and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Analytical Characterization of Aluminum Steel and Superalloys written by D. Scott MacKenzie and published by CRC Press. This book was released on 2005-10-10 with total page 768 pages. Available in PDF, EPUB and Kindle. Book excerpt: This one-of-a-kind reference examines conventional and advanced methodologies for the quantitative evaluation of properties and characterization of microstructures in metals. It presents methods for uncovering valuable information including precipitate mechanisms, kinetics, stability, crystallographic orientation, the effects of thermo-mechanical p
Download or read book Handbook of Residual Stress and Deformation of Steel written by George E. Totten and published by ASM International. This book was released on 2002 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt: Annotation Examines the factors that contribute to overall steel deformation problems. The 27 articles address the effect of materials and processing, the measurement and prediction of residual stress and distortion, and residual stress formation in the shaping of materials, during hardening processes, and during manufacturing processes. Some of the topics are the stability and relaxation behavior of macro and micro residual stresses, stress determination in coatings, the effects of process equipment design, the application of metallo- thermo-mechanic to quenching, inducing compressive stresses through controlled shot peening, and the origin and assessment of residual stresses during welding and brazing. Annotation c. Book News, Inc., Portland, OR (booknews.com)
Download or read book Ultrasonic Measurement of Residual Stress in Steels Using Critically Refracted Longitudinal Waves Lcr written by Teodoro Leon-Salamanca and published by . This book was released on 1988 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Networked Control Systems for Connected and Automated Vehicles written by Alexander Guda and published by Springer Nature. This book was released on 2022-11-15 with total page 1646 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a collection of the latest research findings in such areas as networked multi-agent systems, co-design of communication and control, distributed control strategies that can cope with asynchrony between local loops, event-triggered control, modelling of network infrastructure, novel concepts of distributed control for networked and cyber-physical systems. The book contains the result of the latest research in the field of communication and control system design to support networked control systems with stringent real-time requirements. It introduces readers to research in the field of joint design of the control and communication protocol and presents the latest developments in the area of novel optimal control and scheduling designs under resource constraints. The book also covers the issues of creating emerging information and communication technologies for traffic estimation and control, connected and autonomous technology applications and modelling for commercial and shared vehicle operations. The reader will find information on emerging cyber-physical systems, networked multi-agent systems, large-scale distributed energy systems, as well as on real-time systems, safety and security systems. A significant block of studies is devoted to the topic of transitions towards electrification and automation of vehicles. Modern concepts of road infrastructure construction are described in detail in the presented research papers. Automotive industry professionals will be particularly interested in the sections on the novel mechanisms for medium access in multi-hop wireless networks with real-time requirements, optimal layering architecture and co-design for wireless communication. The book will be incredibly interesting for researchers interested in human–digital interfaces, industrial Internet of Things, artificial intelligence and machine learning.
Download or read book Determination of Applied Stresses in Rails Using the Acoustoelastic Effect of Ultrasonic Waves written by Shailesh Ashok Gokhale and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This research develops a procedure to determine the applied stresses in rails using the acoustoelastic effect of ultrasonic waves. Acoustoelasticity is defined as the stress dependency of ultrasonic wave speed or wave polarization. Analytical models are developed that predict the acoustoelastic effect for longitudinal waves, shear waves, Lamb waves, and Rayleigh waves. Using a programming tool, a numerical simulation of the models is generated to obtain the stress dependent curves of wave velocity and polarization of the various ultrasonic waves propagating in rail steel. A comparison of the sensitivity of the acoustoelastic effect is made to determine the feasibility of ultrasonic waves for further study. Rayleigh waves are found to be most sensitive to stress change. Rayleigh waves are generated using ultrasonic transducer and detected using a laser Doppler vibrometer (LDV). The LDV measures the in-plane and out-of-plane velocities. Polarization is defined as the ratio of in-plane and out-of-plane displacements. Initially, polarization is determined for the specimen in unstressed condition. Thereafter, the rail specimen is stressed in a compression testing machine, the experiment repeated, and the polarization determined. Thus, Rayleigh wave polarization is obtained as a function of applied stress. Finally, the change in polarization obtained experimentally is compared with the analytical model.
Download or read book Determination of Longitudinal Stress in Rails written by Ferdinand Djayaputra and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this research is to determine the longitudinal stress in rails by using the polarization of Rayleigh waves. Analytical models are developed to describe the effect of applied stress on wave speed and on the polarization of Rayleigh waves. A numerical simulation is performed to find the effect of applied stress on wave velocity and Rayleigh wave polarization. The effect of uncertainties in material properties on wave velocity and polarization of Rayleigh wave is also examined in the simulation. The experiment uses a laser Doppler vibrometer (LDV) to measure the particle velocities. The in-plane and out-of-plane velocity components are obtained from the measured particle velocities. The polarization of Rayleigh wave, which is defined as the ratio between the in-plane and out-of-plane displacements, is calculated. Furthermore, the polarization of the Rayleigh wave is considered as a measure to identify applied stress. The experiment is performed on unstressed and stressed rail specimen. Thus, Rayleigh wave polarization is obtained as a function of applied stress. The experimental results are compared with the analytical model. The result shows a good agreement with the theoretical values for unstressed rail.
Download or read book Nondestructive Measurement of Longitudinal Rail Stresses written by D. M. Egle and published by . This book was released on 1976 with total page 103 pages. Available in PDF, EPUB and Kindle. Book excerpt:
