Determination of third order elastic constants in a complex solid applying coda wave interferometry

Payan, Cédric; Garnier, Vincent; Moysan, Joseph; Johnson, P. A.

doi:10.1063/1.3064129

Cited by 130 publications

(88 citation statements)

References 18 publications

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“…When the loading is anisotropic, the changes in ultrasonic wave velocities depend not only on the level of induced stress but also on the direction of stress relative to the direction of propagation and/or polarization of the ultrasonic waves. The direction-dependency of ultrasonic wave velocities has been demonstrated for metals [1], rocks [7] as well as concrete [4,6].…”

Section: Introductionmentioning

confidence: 99%

“…When measured parallel to the loading, the velocities slightly increase (not more than 1%) over the elastic range [4][5][6]. Reliable measurement of such subtle changes is not typically possible using the conventional time-of-flight measurement techniques and was possible employing correlation-based techniques [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

“…The surface wave velocity at every load step was calculated by measuring the surface wave arrival time delays for the Sensor pair (1, 2) and (3,4). Five additional sensors (depicted in Figure 3(b)) were mounted on the opposite side of the specimen, to study the stress-induced changes in the frequency content of the body waves travelling through the specimen.…”

Section: Measurement Setupmentioning

confidence: 99%

“…Acoustoelastic effects have long been investigated in numerous studies concerning metallic substances [1][2][3]. Only very recently, this effect has been measured in concrete under low levels of stress [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

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Nondestructive Investigation of Stress-Induced Damage in Concrete

Shokouhi

Zoëga

Wiggenhauser

2010

Advances in Civil Engineering

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The changes in the sonic surface wave velocity of concrete under stress were investigated in this paper. Surface wave velocities at sonic frequency range were measured on a prismatic concrete specimen undergoing several cycles of uniaxial compression. The loading was applied (or removed) gradually in predefined small steps (stress-controlled). The surface wave velocity was measured at every load step during both loading and unloading phases. Acoustic Emission (AE) test was conducted simultaneously to monitor the microcracking activities at different levels of loading. It was found that the sonic surface wave velocity is highly stress dependent and the velocity-stress relationship follows a particular trend. The observed trend could be explained by a combination of acoustoelasticity and microcracking theories, each valid over a certain range of applied stresses. Having measured the velocities while unloading, when the material suffers no further damage, the effect of stress and damage could be differentiated. The slope of the velocity-stress curves over the elastic region was calculated for different load cycles. This quantity was normalized to yield a dimensionless nonlinear parameter. This parameter generally increases with the level of induced damage in concrete.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Measurement Setupmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Nondestructive Investigation of Stress-Induced Damage in Concrete

Shokouhi

Zoëga

Wiggenhauser

2010

Advances in Civil Engineering

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“…3,4 The influence of texture, temperature, and microstructural changes on the third-order elastic constants of metals has been widely investigated. 4 Very recently, Payan et al 5 determined the thirdorder elastic constants from the ultrasonic wave velocity measurements in uniaxially compressed concrete specimens.…”

Section: Background Acoustoelasticitymentioning

confidence: 99%

Surface Wave Velocity-Stress Relationship in Uniaxially Loaded Concrete

Shokouhi

Zoëga

Wiggenhauser

et al. 2012

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Überwachung von Betonkonstruktionen mit eingebetteten Ultraschallsensoren

Wolf¹,

Niederleithinger²,

Mielentz³

et al. 2014

Bautechnik

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Die immer komplexere Konstruktionsweise von Neubauten einerseits und die alternde Infrastruktur andererseits erfordern in manchen Fällen eine dauerhafte Überwachung, um besondere Einwirkungen und gegebenenfalls Schädigungen rechtzeitig und genau zu erkennen. Hierfür ist eine Vielzahl von Methoden und Sensoren verfügbar. Das Portfolio weist aber insbesondere bei der Detektion langsamer, räumlich begrenzter Veränderungen Lücken auf. Hierfür sind bisher sehr aufwändige Untersuchungen oder Installationen notwendig. In der vorliegenden Arbeit werden Sensoren und zugehörige Auswertemethoden für die Ultraschalltransmission vorgestellt, die sich für die zerstörungsfreie, dauerhafte Überwachung von Beton eignen. Direkt oder nachträglich in Betonkonstruktionen eingebaut, ermöglichen sie eine nicht nur lokale, sondern größere Raumbereiche umfassende Dauerüberwachung von Änderungen der Materialeigenschaften. Das Prinzip der Ultraschalltransmission und die verschiedenen Einflussparameter werden vorgestellt. Zu letzteren gehören neben der Belastung und Schädigung auch Umweltparameter wie Temperatur und Feuchte. Verschiedene Methoden zur Datenanalyse, wie z. B. die Codawelleninterferometrie, ermöglichen eine Detektion kleinster Veränderungen. Die in den Beton einzubettenden Ultraschallsensoren werden vorgestellt und ihr Einbau und Betrieb beschrieben. Als Beispiele für Anwendungen werden Frost‐Tauwechsel‐Experimente im Labor, die Detektion von lokalen Lasten im Technikumsmaßstab und der Einsatz an realen Brücken diskutiert. Die Sensoren sind zum Teil bereits seit mehreren Jahren in Probeobjekte eingebettet und liefern zuverlässig wertvolle Daten. Monitoring of concrete constructions by embedded ultrasonic sensors Challenging new constructions and the ageing infrastructure are increasing the demand for permanent monitoring of loads and damages. Various methods and sensors are used for this purpose. But the technologies available today have difficulties in detecting slowly progressing locally confined damages. Extensive investigations or instrumentations are required so far for this purpose. In this study we present new sensors and data processing methods for ultrasonic transmission, which can be used for non‐destructive permanent monitoring of concrete. They can be mounted during construction or thereafter. Larger volumes can be monitored by a limited number of sensors for changes of material properties. The principles of ultrasonic transmission and influencing factors are presented. This latter include load, damages as well as environmental parameters as temperature or moisture. Various methods for data processing, e. g. coda wave interferometry are introduced. They allow the detection of very small changes in the medium. The embedded sensors are shown including mounting and operation. Application examples so far include small scale laboratory freeze‐thaw experiments, localizing loads in larger concrete models and monitoring load effects on real structures. Some sensors are operating already for several years.

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Determination of third order elastic constants in a complex solid applying coda wave interferometry

Abstract: Precise and direct determination of the elastic constants of a cylinder with a length equal to its diameter Rev.Determination of the higher-order elastic compliance constants of metals from measurements of the dependence of ultrasound velocity on stress

Cited by 130 publications

References 18 publications

Nondestructive Investigation of Stress-Induced Damage in Concrete

Nondestructive Investigation of Stress-Induced Damage in Concrete

Surface Wave Velocity-Stress Relationship in Uniaxially Loaded Concrete

Überwachung von Betonkonstruktionen mit eingebetteten Ultraschallsensoren

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