Vibration and acoustics : measurement and signal analysis / C. Sujatha.

Format:

Book

Author/Creator:

Sujatha, C., author.

Series:

McGraw-Hill's AccessEngineering

Language:

English

Subjects (All):

Vibration--Measurement.

Vibration.

Sound--Measurement.

Sound.

Signal processing.

Acoustical engineering.

Genre:

Electronic books.

Physical Description:

1 online resource

Edition:

First edition.

Place of Publication:

New York, N.Y. : McGraw-Hill Education, [2010]

Language Note:

In English.

Summary:

"This book explains all topics concerning vibration and acoustic measurements, as well as signal analysis techniques, in a simple and concise manner.".

Contents:

A. Dedication

B. Preface

Organization

C. Acknowledgements

1. Introduction

Need for vibration and acoustic measurements

Signals and their representation

2. Theory of vibration

Introduction

Single-degree-of-freedom system

Two-degree-of-freedom system

Multi-degree-of-freedom system

Further readings

3. Vibration transducers

Classification of transducers

Earliest vibration transducer: the hand vibrograph

Absolute measuring transducers or seismic transducers

Displacement transducers

Velocity transducers

Acceleration transducers

Other vibration transducers

Smart sensors (plug and play devices) and transducer electronic data sheets (teds)

Comparison of transducers

4. Vibration excitation techniques

Introduction to vibration excitation

Vibration exciters of the contact type

Non-intrusive (non-contact) excitation techniques

Shock testing

5. Other transducers and equipment related to vibration measurement

Strain gauges

Transducers for force measurement

Transducers for torque measurement

Pressure transducers

Equipment which facilitate measurements on rotating structures

Signal conditioning amplifiers

6. Fundamentals of signal analysis

Various steps in data acquisition and processing

Some important signal operations

Some important concepts related to signals and systems

Frequency domain analysis

Sampling of continuous time signals

The fast fourier transform

Fft analyser setup

Leakage and windowing

Averaging

Zoom

7. Dealing with random signals

Modelling of random processes

Probabilistic model

Some common distributions

Statistical descriptors for random signals

Classification of random data

Frequency domain representation of random signals

Response of an sdof system

8. Common vibration monitoring and analysis techniques

Sources of vibration in rotating machines

Transducer considerations

Vibration data collection errors and their effects

Ways of displaying vibration data

Time domain analysis

Statistical/probabilistic descriptors of vibration signals

Lissajous pattern/orbit plots

Phase (relative motion) analysis in the time domain

Mode shape analysis

Frequency domain analysis/spectrum analysis (amplitude versus frequency)

Order tracking/rpm-based measurements

Bod? plots

Polar plot/nyquist plot

Cepstrum (quefrency domain) analysis

Envelope analysis/demodulation technique

Parametric spectra using autoregrassive (ar) and autoregressive moving average (arma) models

Advanced fault diagnostic techniques

Wavelet analysis

Fault classification using ann

Classification using support vector machines (svm)

Further readings.

9. Vibration severity and standards

Classification of severity of machinery vibration

Sensitivity of human beings to vibration

Ride comfort analysis in rail vehicles

Vibrations affecting people in buildings

10. Basics of experimental modal analysis

Important experimental aspects of modal testing

Representation and properties of frf data of sdof and mdof systems

Obtaining frfs with true random excitation

Signal processing problems and solutions in modal analysis

Modal parameter extraction methods for sdof and mdof systems

Damage detection from modal parameters

11. Fundamentals of acoustics

Human perception of sound

Sound wave propagation in 1-d

Sound propagation in 3-d space: the 3-d wave equation

Some important acoustic quantities and relations

Sound transmission from one medium to another with normal incidence

Acoustics of enclosed spaces

12. Acoustic transducers

Parameters to be considered in the choice of microphones

Various types of microphones

Acoustic exciters

Acoustic calibrators

13. Common measurements in acoustics

Sound level measurement

Sound power from sound pressure level measurement

Sound intensity measurement

Reverberation time measurements

Sound absorption measurement

Measurement of sound transmission loss

Acoustic chambers

Community reaction to noise

14. Typical vibration/noise measurements and case studies

Evaluation of loss factors of rubber specimens

Evaluation of vibration damping characteristics of tubes

Vibration test on torsional vibration damper

Calibration of transducers

Ground vibration due to blasting

A case study on floor vibration measurements

Vibration isolation of a 28-hp engine

Heavy vehicle dynamics?comparison of ride comfort between vehicle with leaf spring and hydropneumatic suspensions

Dynamic studies of railways bogies

Vibration and ride comfort studies on a tracked vehicle

Experimental modal analysis

Vibration measurement on turbine blades in a power station

Study of sound from a 106 mw power plant

Evaluation of rubber impregnated steel roller chains for noise reduction and vibration damping characteristics

Sound intensity measurement on helicopter.

Notes:

Includes bibliographical references and index.

Electronic reproduction. New York, N.Y. : McGraw Hill, 2010. Mode of access: World Wide Web. System requirements: Web browser. Access may be restricted to users at subscribing institutions.

Description based on cover image and table of contents, viewed on Oct. 24, 2014.

Other Format:

Print version: Vibration and acoustics : measurement and signal analysis.

ISBN:

9780070148789

0070148783

OCLC:

894475645

Access Restriction:

Restricted for use by site license.