Hendry / Neal Elements of Experimental Stress Analysis

Structures and Solid Body Mechanics Division
1. Auflage 2013
ISBN: 978-1-4831-5320-9
Verlag: Elsevier Science & Techn.
Format: PDF
Kopierschutz: 1 - PDF Watermark

E-Book, Englisch, 202 Seiten, Web PDF

Elements of Experimental Stress Analysis describes the principles of the techniques and equipment used in stress analysis and suggests appropriate applications of these in laboratory and field investigations. Examples from the field of civil engineering are used to illustrate the various methods of analysis. This book is comprised of 12 chapters and begins with a discussion on the use of models, scale factors, and materials in experimental stress analysis. The next chapter focuses on the application of load to the element under test, with emphasis on the means of creating the required forces; the means of applying these forces to the test piece; and the means of measuring the forces. The reader is then introduced to the principles of various types of strain gauges, as well as the methods of calculating stresses from strains in the case of elastic materials. Subsequent chapters explore two-dimensional photoelasticity; the frozen stress method and surface coating techniques; structural model analysis; special instruments for dynamic stress analysis; analogue methods for dealing with stress problems; and how to select a method of stress analysis. This monograph will be of use to all undergraduate and postgraduate students who require a basic knowledge of experimental stress analysis, and also to practicing engineers who may be concerned with experimental investigations in one way or another.

Autoren/Hrsg.

Hendry, A. W.

Neal, B. G.

Inhaltsverzeichnis

1;Front Cover;1
2;Elements of Experimental Stress Analysis;4
3;Copyright Page;5
4;Table of Contents;6
5;Preface;7
6;CHAPTER I. MODELS, SCALE FACTORS AND MATERIALS;10
6.1;MODELS AND SCALE FACTORS;10
6.2;MATERIALS FOR EXPERIMENTAL STRESS ANALYSIS;13
6.3;BIBLIOGRAPHY;19
7;CHAPTER II. LOAD APPLICATION AND MEASUREMENT;20
7.1;METHODS OF GENERATING FORCES;20
7.2;METHODS OF APPLYING FORCES;24
7.3;METHODS OF MEASURING FORCES;25
7.4;BIBLIOGRAPHY;28
8;CHAPTER Ill. MECHANICAL, OPTICAL AND OTHER GAUGES;30
8.1;DIAL GAUGES;31
8.2;TELESCOPES AND MICROSCOPES;32
8.3;THE MOMENT INDICATOR;32
8.4;MECHANICAL STRAIN GAUGES;34
8.5;THE DE LEIRIS PNEUMATIC STRAIN GAUGE;38
8.6;BIBLIOGRAPHY;40
9;CHAPTER IV. THE ELECTRICAL RESISTANCE STRAIN GAUGE;41
9.1;BASIC PRINCIPLES;41
9.2;STATIC STRAIN MEASUREMENT;44
9.3;DYNAMIC STRAIN GAUGE EQUIPMENT;48
9.4;MOUNTING AND PROTECTION OF STRAIN GAUGES;51
9.5;THERMAL DRIFT;52
9.6;CALIBRATION;53
9.7;INSTRUMENTS USING STRAIN GAUGE ELEMENTS;54
9.8;BIBLIOGRAPHY;55
10;CHAPTER V. OTHER ELECTRICAL STRAIN AND DEFLECTION GAUGES;57
10.1;CAPACITY GAUGES;57
10.2;INDUCTANCE GAUGES;61
10.3;VIBRATING WIRE GAUGES;65
10.4;BIBLIOGRAPHY;71
11;CHAPTER VI. THE CALCULATION OF STRESSES FROM STRAINS;72
11.1;PRINCIPAL STRESSES AND STRAINS;72
11.2;PRINCIPAL STRAINS FROM MEASURED STRAINS;73
11.3;PRINCIPAL STRESSES;78
11.4;MAXIMUM SHEARING STRESS;79
11.5;BIBLIOGRAPHY;80
12;CHAPTER VII. TWO-DIMENSIONAL PHOTO-ELASTICITY;82
12.1;OPTICAL THEORY;83
12.2;LINES OF PRINCIPAL STRESS;88
12.3;DETERMINATION OF THE SEPARATE PRINCIPAL STRESSES;88
12.4;PHOTO-ELASTIC APPARATUS;94
12.5;MATERIALS FOR PHOTO-ELASTICITY;97
12.6;PREPARATION OF PHOTO-ELASTIC MODELS;101
12.7;TEST PROCEDURE;102
12.8;SOURCES OF ERROR IN PHOTO-ELASTICITY;103
12.9;BIBLIOGRAPHY;104
13;CHAPTER VIII. THE FROZEN STRESS METHOD AND SURFACE COATING TECHNIQUES;106
13.1;THE FROZEN STRESS EFFECT;106
13.2;PROPERTIES OF PLASTICS USED FOR FROZEN STRESS EXPERIMENTS;109
13.3;PROCEDURE IN FROZEN STRESS ANALYSIS;110
13.4;INTERPRETATION OF FRINGE PATTERN IN SLICES;111
13.5;PHOTO-ELASTIC COATING TECHNIQUES;112
13.6;BRITTLE LACQUER COATINGS;117
13.7;BIBLIOGRAPHY;119
14;CHAPTER IX. STRUCTURAL MODEL ANALYSIS;122
14.1;DIRECT METHODS;122
14.2;INDIRECT METHODS;136
14.3;BIBLIOGRAPHY;142
15;CHAPTER X. SPECIAL INSTRUMENTS FOR DYNAMIC STRESS ANALYSIS;144
15.1;DIRECTLY CONNECTED DEFLECTION INSTRUMENTS;144
15.2;PRINCIPLE OF SEISMIC VIBRATION INSTRUMENTS;146
15.3;CALCULATION OF VIBRATIONAL STRESSES;151
15.4;BIBLIOGRAPHY;153
16;CHAPTER XI. ANALOGUE METHODS FOR STRESS PROBLEMS;154
16.1;THE MEMBRANE ANALOGY;156
16.2;ELECTRICAL ANALOGY FOR LAPLACE'S AND POISSON'S EQUATIONS;163
16.3;RESISTANCE NETWORK ANALOGUES;169
16.4;BIBLIOGRAPHY;179
17;CHAPTER XII. SELECTION OF METHOD OF ANALYSIS;181
17.1;ILLUSTRATIVE EXAMPLES;183
17.2;CONCLUSION;195
18;BIBLIOGRAPHY;197
19;INDEX;200