Earthquakes and Acoustic Emission

Alberto Carpinteri, Giuseppe Lacidogna0415444020, 9780415444026, 9780203936115, 0203936116

Earthquakes are caused by the sudden release of energy generated during the fracture of stressed rock within the Earth’s crust. The energy radiates outwards from the source as seismic waves and vibrates the ground. This phenomenon is similar to what happens in materials under load and is called Acoustic Emission (AE). On the other hand, the AE monitoring technique is analogous to the one employed in earthquake control, where seismic waves reach the monitoring stations placed on the Earth’s surface. Although they take place on very different scales, these two phenomena – earthquakes in geophysics and damage in structural materials – have similarities. In both cases, there is a release of elastic energy from sources located inside a medium.

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Table of contents :
BOOK COVER……Page 1
TITLE……Page 4
COPYRIGHT……Page 5
CONTENTS……Page 6
PREFACE……Page 10
1 Seismic Mechanics and Earthquakes……Page 12
THE SCALING OF GEOLOGICAL FAULTS……Page 14
EFFECTS OF NONLINEAR WEAKENING ON EARTHQUAKE SOURCE SCALINGS……Page 20
SEISMIC ENERGY RADIATION FROM DYNAMIC FAULTING……Page 28
DAMAGE RHEOLOGY MODEL AND DECAY LAW OF AFTERSHOCK ACTIVITY……Page 34
SPECTRAL ELEMENT SIMULATION OF RUPTURE DYNAMICS……Page 44
NON-LINEAR SLIP-WEAKENING IN A ROTARY GOUGE FRICTION EXPERIMENT……Page 54
DOES ELASTIC REBOUND THEORY APPLY TO SEISMIC FAULTS?……Page 62
CORRELATIONS OF STRESS DISTRIBUTIONS ALONG THE FAULT: FROM LABORATORY FRACTURE ROUGHNESS TO FAULT ASPERITY SQUEEZE……Page 68
DETACHMENT WAVES AND THE ONSET OF FRICTIONAL SLIP……Page 76
CRACK-LIKE AND PULSE-LIKE DYNAMIC FRICTIONAL SLIDING……Page 82
2 Structural Failure and Acoustic Emission……Page 88
IDENTIFICATION OF MICROCRACKING PROCESS IN FRACTURE PROCESS ZONE BY AE……Page 90
CONSEQUENCES OF ACOUSTIC EMISSION ON CRACK SPEED AND ROUGHNESS EXPONENT IN BRITTLE DYNAMIC FRACTURE……Page 100
FAILURE TIME, CRITICAL BEHAVIOUR AND ACTIVATION PROCESSES IN CRACK FORMATION……Page 106
RESPONSE OF FRACTURE NUCLEATION SITE TO WEAK MECHANICAL PULSES……Page 114
FRACTURE IN TWO DIMENSIONS (IN PAPER): ACOUSTIC EMISSION STUDIES AND THEORETICAL LESSONS……Page 120
MICROMECHANICS OF CORROSION CRACKING IN REINFORCED CONCRETE BY AE……Page 130
DAMAGE MECHANICS OF CARBONATED CONCRETE BY AE RATE-PROCESS ANALYSIS……Page 140
BRAZILIAN TEST OF CONCRETE EVALUATED BY AE……Page 150
EVOLUTION OF DAMAGE ACCUMULATION IN LOW-CARBON STEEL IN TENSION CONDITION……Page 160
FATIGUE PERFORMANCE OF SANDWICH COMPOSITES……Page 166
ON-PROCESS MONITORING OF CERAMICS AND CERAMIC COATINGS BY LASER AE……Page 174
FRACTURING, ACOUSTIC EMISSION, AND NUMERICAL SIMULATION OF GRANITE UNDER MODE II LOADING……Page 182
DAMAGE QUANTIFICATION FOR CONCRETE STRUCTURES BY IMPROVED b-VALUE ANALYSIS OF AE……Page 192
STRUCTURAL MONITORING AND LIFE-TIME ASSESSMENT OF MEDIEVAL TOWERS……Page 202
Author Index……Page 212