Kenneth G. McConnell, Paulo S. Varoto

Vibration Testing

Theory and Practice

• Gebundenes Buch

Produktbeschreibung

Vibration Testing: Theory and Practice, Second Edition is a step-by-step guide that shows how to obtain meaningful experimental results via the proper use of modern instrumentation, vibration exciters, and signal-processing equipment, with particular emphasis on how different types of signals are processed with a frequency analyzer. Thoroughly updated, this new edition covers all basic concepts and principles underlying dynamic testing, explains how current instruments and methods operate within the dynamic environment, and describes their behavior in a number of commonly encountered field and laboratory test situations.

Produktdetails

• Verlag: Wiley & Sons
• 2. Aufl.
• Seitenzahl: 672
• Erscheinungstermin: 1. Oktober 2008
• Englisch
• Abmessung: 240mm x 161mm x 40mm
• Gewicht: 1070g
• ISBN-13: 9780471666516
• ISBN-10: 0471666513
• Artikelnr.: 25182954

Autorenporträt

KENNETH G. McCONNELL, PE, is Professor Emeritus, Aerospace Engineering and Engineering Mechanics, Iowa State University, and has over forty-three years' experience in vibrations and experimental mechanics. He is a Fellow of the Society of Experimental Mechanics, and recipient of SEM's M.M. Frocht Award for "outstanding achievement as an experimental mechanics educator"; SEM's highest award, the William M. Murray Lecturer, for his "outstanding contribution to SEM in the fields of dynamic instrumentation, vibration testing techniques, and fluid structure interaction"; the D.J. DeMichele Award for "promoting the scientific and educational aspects of modal analysis"; and the Brewer Award, "in recognition of his contributions as an outstanding practicing experimental stress analyst." He is the author of Instrumentation for Engineering Measurements, Second Edition (coauthored with James E. Dally and William F Riley and published by Wiley) and other books in the field. PAULO S. VAROTO is professor on Dynamics and Vibrations at the Mechanical Engineering Department, School of Engineering of São Carlos, University of São Paulo. Professor Varoto earned his BSc and MSc in mechanical engineering from the University of São Paulo and holds a PhD in engineering mechanics from the Department of Aerospace Engineering and Engineering Mechanics, Iowa State University, where he worked under the supervision of Ken McConnell.

Inhaltsangabe

Chapter One: an Overview Of Vibration Testing. 1.1 Introduction. 1.2
Preliminary Considerations. 1.3 General Input/Output Relationships in the
Frequency Domain. 1.4 Overview of Equipment Employed. 1.5 Summary. Chapter
Two: Dynamic Signal Analysis. 2.1 Introduction. 2.2 Phasor Representation
of Periodic Functions. 2.3 Periodic Time Histories. 2.4 Transient Signal
Analysis. 2.5 Correlation Concepts - A Statistical Point of View. 2.6
Correlation Concepts - Periodic Time-Histories. 2.7 Correlation Concepts -
Transient Time-Histories. 2.8 Correlation Concepts - Random Time Histories.
2.9 Summary. 2.10 General References on Signal Analysis. References.
Chapter Three: Vibration Concepts. 3.1 Introduction. 3.2 The Single DOF
Model. 3.3 Single Degree of Freedom Forced Response. 3.4 General
Input-Output Model for Linear Systems. 3.5 The Two Degree of Freedom
Vibration Model. 3.6 The Second Order Continuous Vibration Model. 3.7
Fourth Order Continuous Vibration System - The Beam. 3.8 Non-Linear
Behavior. 3.9 Summary. References. Chapter Four: Transducer Measurement
Considerations. 4.1 Introduction. 4.2 Fixed Reference Transducers. 4.3
Mechanical Model of Seismic Transducers - The Accelerometer. 4.4
Piezoelectric Sensor Characteristics. 4.5 Combined Linear and Angular
Accelerometers. 4.6 Transducer Response to Transient Inputs. 4.7
Accelerometer Cross-Axis Sensitivity. 4.8 The Force Transducer General
Model. 4.9 Correcting Frf Data For Force Transducer Mass Loading. 4.10
Calibration. 4.11 Environmental Factors. 4.12 Summary. References. Chapter
Five: The Digital Frequency Analyzer. 5.1 Introduction. 5.2 Basic Processes
of A Digital Frequency Analyzer. 5.3 Digital Analyzer Operating Principles.
5.4 Factors In The Application of a Single Channel Analyzer. 5.5 The Dual
Channel Analyzer. 5.6 The Effects of Signal Noise on Frf Measurements. 5.7
Overlapping Signal Analysis to Reduce Analysis Time. 5.8 Zoom Analysis. 5.9
Scan Analysis, Scan Averaging, And More On Spectral Smearing. 5.10 Summary.
5.11 References. Chapter Six: Vibration Excitation Mechanisms. 6.1
Introduction. 6.2 Mechanical Vibration Exciters. 6.3 Electrohydraulic
Exciters. 6.4 The Modeling Of An Electro-Magnetic Vibration Exciter System.
6.5 An Exciter System's Bare Table Characteristics. 6.6 Interaction Of An
Exciter And A Grounded Single Dof Structure. 6.7 Interaction Of An Exciter
And An Ungrounded Structure Under Test. 6.8 Measuring an Exciters Actual
Characteristics. References. Chapter Seven: The Application Of Basic
Concepts To Vibration Testing. 7.1 Introduction. 7.2 Sudden Release Or Step
Relaxation Method. 7.3 Forced Response Of A Simply Supported Beam Mounted
On An Exciter. 7.4 Impulse Testing. 7.5 Selecting Proper Windows for
Impulse Testing. 7.6 Vibration Exciter Driving A Free-Free Beam With Point
Loads. 7.7 Windowing Effects On Random Test Results. 7.8 Low Frequency
Damping Measurements Reveal Subtle Data Processing Problems. 7.9 A Linear
Structure Becomes Non-Linear Due To Its Test Environment.. 7.10 Summary.
References. Chapter Eight: General Vibration Testing Model: From The Field
To The Laboratory. 8.1 Introduction. 8.2 A Two Point Input-Output Model Of
Field And Laboratory Simulation Environments. 8.3 Laboratory Simulation
Schemes Based On The Elementary Model. 8.4 An Example Using A Two Dof Test
Item And A Two DOF Vehicle. 8.5 The General Field Environment Model. 8.6
The General Laboratory Environment Model. 8.7 Test Scenarios for Laboratory
Simulations. 8.8 Summary.