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Thursday, November 12, 2020 | History

2 edition of condition monitoring of press-working systems using ultrasonic Lamb waves. found in the catalog.

condition monitoring of press-working systems using ultrasonic Lamb waves.

Anthony John Wilcox

condition monitoring of press-working systems using ultrasonic Lamb waves.

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Published by University ofCentral England in Birmingham in Birmingham .
Written in English


Edition Notes

Thesis (Ph.d) - University of Central England in Birmingham,1994.

ContributionsUniversity of Central England in Birmingham.
ID Numbers
Open LibraryOL19518890M

This chapter quantifies the advantages of condition-based maintenance on the safety and lifetime cost of an airplane fuselage. The lifecycle of an airplane is modeled as blocks of crack propagation due to Author: Ting Dong, Raphael T. Haftka, Nam H. Kim.


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condition monitoring of press-working systems using ultrasonic Lamb waves. by Anthony John Wilcox Download PDF EPUB FB2

[], Fig. shows the group velocity dispersion curves of Lamb waves in an A steel plate as an example for illustration, where S m (m = 0, 1, 2) refers to a collection of symmetric Lamb wave modes, while A m (m = 0, 1, 2) refers to a series of antisymmetric Lamb wave.

The Automated Press-working Systems Group at Birmingham Polytechnic have been researching the condition monitoring of press tooling using ultrasonic Surface Acoustic Waves (SAWs) and Acoustic Emission (AE).

The present paper discusses the experimental work Author: M.J. Bathe, A.D. Hope, D.R.H. Baggs, K.W. Bate, R.S. Bayliss, M. Piela. Abstract: A condition monitoring nondestructive evaluation (NDE) system, combining the generation of ultrasonic Lamb waves in thin composite plates and their subsequent detection using an embedded optical fiber system is described.

The acoustic source is of low profile with respect to the composite plate thickness, surface conformable, and able to efficiently launch a known Lamb wave. This paper proposes a new omni-directional electromagnetic acoustic transducer (EMAT) for the ultrasonic Lamb wave (ULW) tomography imaging (TI) of defects in metallic plates.

The proposed Cited by: using Lamb waves. Hutchins and Wright [11, 12] generated ultrasonic tomographic images using noncontact air couple or electromagnetic acoustic transducers (EMAT) to image the changes in the structure of an aluminum sheet containing artificial defects.

Pei [13] and Hinders [14] discussed Lamb wave tomography Cited by: A new technique called ultrasonic condition monitoring is now available which can detect even incipient faults in bearings as well as adequacy of lubricant. IRD measurements are generally not useful for very slow speeds, but ultrasonic detectors can be used.

The understanding of strength recovery behavior under a dynamic loading environment provides a guidance for optimizing the design of composite structures for in-service applicatioAuthor: Subir Patra, Hossain Ahmed, Mohammadsadegh Saadatzi, Sourav Banerjee. Structural Health Monitoring From System Integration to Autonomous Systems.

Editor: Fu-Kuo Chang, Department of Aeronautics and Astronautics, Stanford University. Proceedings of the Seventh International Workshop on Structural Health Monitoring. In extreme slow speed applications, if the bearing is a good condition, there will be little to no ultrasonic noise simply because there is no fault condition that would produce the ultrasonic noise.

As a fault begins though, this will be heard via the headset when inspecting the equipment, and it shows up very nicely on the time wave.

Original research on SHM sensors, quantification strategies, system integration and control for a wide range of engineered materialsNew applications in robotics, machinery, as well as military aircraft, railroads, highways, bridges, pipelines, stadiums, tunnels, space exploration and energy production Continuing a critical book series on structural health monitoring.

This paper describes the development of a flexible piezoelectric transducer for the generation and detection of ultrasonic symmetrical Lamb waves in plate- A flexible piezoelectric transducer design for efficient generation and reception of ultrasonic Lamb waves Cited by: The latest in a series, this book comprises articles representing research from Europe on all phases and system types of structural health monitoring.

The volume shows how SHM is applied in. The prototype system uses ultrasonic Lamb waves to carry energy along plates, such as those used in aircraft structures, and commercially available piezoelectric patch transducers as the.

Structural health monitoring with actively excited Lamb waves is a promising technology for health monitoring of aerospace carbon fiber-reinforced plastic structures with reasonable effort, as it. The generation, propagation, and detection of Lamb waves in plates using air-coupled ultrasonic transducers.

Journal of the Acoustical Society of America (5), – () Google Scholar Cited by: 2. The condition monitoring of press-working systems using ultrasonic Lamb waves. Author: Wilcox, Anthony John. ISNI: Awarding Body: University of Central England in.

Lamb waves propagate in solid plates or are elastic waves whose particle motion lies in the plane that contains the direction of wave propagation and the plane normal (the direction perpendicular to the plate).

Inthe English mathematician Horace Lamb published his classic analysis and description of acoustic waves. The rapid monitoring of structures using interdigital Lamb wave transducers. R S C Alleyne D N and Cawley P The long range detection of corrosion in pipes using Lamb waves Review of Progress in Lowe M J S and Auld B A Development of a computer model for an ultrasonic polymer film transducer system Cited by: The ultrasonic testing technique using Lamb waves is widely used for the non-destructive testing and evaluation of various structures.

For air-coupled excitation and the reception of A 0 mode Lamb waves, leaky guided waves. The use of Lamb waves, guided elastic waves in a plate, has shown promise in detecting localized damage, such as cracking or corrosion, due to the short wavelengths of the propagating waves.

Lamb wave techniques have been utilized for structural health monitoring Cited by:   This paper aims to effectively identify such hidden debonding regions in these advanced structures, using Lamb wave‐based monitoring technique. A semianalytical analysis of Lamb wave dispersion in a healthy sandwich structure is carried out to identify various Lamb Cited by: Ultrasonic guided waves in solid media have become a critically important subject in nondestructive testing and structural health monitoring, as new faster, more sensitive, and more economical ways of looking at materials and structures have become possible.

This book will lead to fresh creative ideas for use Cited by: Structural Health Monitoring Using Lamb Waves Wolfgang HILLGER and Uwe PFEIFFER, DLR Institute of Composite Structures and Adaptive Systems, Braunschweig, Germany Abstract.

In opposite to longitudinal waves which are used for local testing with high resolution, Lamb waves. The present paper discusses Lamb wave generation using LA and investigates the applicability of the proposed method to detect damage because the LA-generated Lamb waves that have amplitudes larger than those obtained by conventional laser ultrasonic Lamb waves Cited by: The purpose of this paper is to provide a concise introduction to the developments and recent findings of a BRITE-EURAM program of work (, Structurally Integrated System for the comprehensive evaluation of COmposites).

The aim of the program has been to develop an acoustic/ultrasonic based structural monitoring system for composite structures using Cited by: A schematic of an ultrasonic guided wave-based active SHM system for the monitoring of fatigue cracks in the weld zone of bogie frames is shown in Figure 1.

The SHM system consists of a sensor Cited by: 6. Description: A type of ultrasonic wave propagation in which the wave is guided between two parallel surfaces of the test object. For an object sufficiently thin to allow penetration to the opposite surface, e.g. a plate having a thickness of the order of a wavelenght or so, Rayleigh waves degenerate to Lamb waves.

This paper aims to effectively identify such hidden debonding regions in these advanced structures, using Lamb wave‐based monitoring technique.

A semianalytical analysis of Lamb wave dispersion in a healthy sandwich structure is carried out to identify various Lamb Cited by: TABLE OF CONTENTS Preface KEYNOTE PRESENTATIONS New Technology Frontiers on Commercial Aircrafts A New Look in Design of Intelligent Structures with SHM The Multidisciplinary Approach to SHM The Challenge of Long-Span Suspended Bridges Towards Damage and Structural Health Monitoring of Aerospace Composite Structures using Optical Fiber Sensors MONITORING.

@article{osti_, title = {ULTRASONIC TESTING WITH LAMB WAVES}, author = {Worlton, D C}, abstractNote = {A method is described whereby many types of flaws lying close to the surface of a metal can be ultrasonically detected, regardless of the time duration of the interrogating pulses.

Lamb waves are establfshed in the metal between a flaw and the surface by an ultrasonic. Using Lamb Waves for Structural Health Monitoring applications David Schmicker. Ultrasonic guided waves propagation in pipe (with defect) - Duration: Ultrasonic Condition Monitoring Alan Bandes UE Systems, Inc Ultrasound inspection offers a unique position for condition monitoring as both a “stand-alone” inspection technology and as an effective File Size: KB.

This paper presents experimental results for a new condition monitoring system that uses a combination of piezoelectric and fibre-optic technologies as the active and passive elements.

Structural Health Monitoring Using Guided Ultrasonic Waves to Detect Damage in Composite Panels Colleen Rosania Decem Introduction In the aircraft industry safety, maintenance costs.

of A0 Lamb wave mode increases with frequency and thickness, and for S0 wave mode could be observed opposite Investigation of the Lamb Waves Generation in Isotropic Plates Using Ultrasonic.

Please use one of the following formats to cite this article in your essay, paper or report: APA. Polytec. (, October 02). Using Lamb Wave Testing for Structural Health Monitoring. Piezoelectric sensors and actuators are the bridge between electronic and mechanical systems in structures.

This type of sensor is a key element in the integrity monitoring of aeronautic structures, bridges, pressure vessels, wind turbine blades, and gas pipelines. In this paper, an all-in-one system for Structural Health Monitoring (SHM) based on ultrasonic waves Cited by: More significantly, flaw detection using Lamb waves remains a substantial challenge because reflections from flaws in the size range of practical interest are not easily distinguished from other waveforms.

In this paper we investigate the transition from Lamb wave response to longitudinal wave. methods to study and assess the basic damage mechanisms that detrimentally influence the proper functioning of materials, such as materials fatigue and fracture (Chap. 7), corrosion (Chap.

12), friction. Energy Transmission System for Aircraft Structural Health Monitoring Applications Aleksander Kural A thesis submitted to Design and characterization of an ultrasonic lamb-wave power delivery system.

There is a need to better understand the effect of temperature changes on the response of ultrasonic guided-wave pitch-catch systems used for structural health monitoring. A model is proposed to account for all relevant temperature-dependent parameters of a pitch-catch system Cited by: This type of sensor is a key element in the integrity monitoring of aeronautic structures, bridges, pressure vessels, wind turbine blades, and gas pipelines.

In this paper, an all-in-one system for Structural Health Monitoring (SHM) based on ultrasonic waves is presented, called Phased Array Monitoring Cited by: Linear and non-linear analysis of composite plates using guided acoustic waves. HEALTH MONITORING OF STRUCTURAL AND BIOLOGICAL SYSTEMS XIII, Banerjee, S., & Kundu, T.

(). Sensing & Measurement Modeling ultrasonic wave scattering by internal anomalies for structural monitoring.