Study of acoustoelasticity behavior of concrete material under uniaxial compression

Chaix, Jean François; Lillamand, Ivan; Ploix, Marie-Aude; Garnier, Vincent; Corneloup, Gilles

doi:10.1121/1.3008567

Cited by 7 publications

(5 citation statements)

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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%

“…The velocities measured perpendicular to the loading gradually decrease but the decease is not significant until reaching critical stress levels [9,10]. 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%

“…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%

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Nondestructive Investigation of Stress-Induced Damage in Concrete

Shokouhi

Zoëga

Wiggenhauser

2010

Advances in Civil Engineering

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“…This study represents a novel contribution to the eld by successfully detecting this limit using the ultrasonic method. Chaix et al (2008) found that the variation in high-strength concrete is less signi cant compared to normal concrete. This difference may be due to the different composition between mortar and concrete.…”

Section: Resultsmentioning

confidence: 95%

“…There have been few studies in the literature that have explored the use of ΔV/V0 in research. Chaix et al (2008) examined the relationship between ΔV/V0 of transverse waves and UCS (using a 500 kHz transducer). Toukal (2010) studied the relationship between ΔV/V0 of longitudinal ultrasonic waves and applied stress.…”

Section: Resultsmentioning

confidence: 99%

Characterizing Microcracks in Carbonate Rock Subsurfaces in Tunisia Using Ultrasonic Velocity Variations

Abdelhedi

Abbes

2023

Preprint

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The recent, catastrophic earthquake that struck Turkey and surrounding regions in February 2023 has emphasized the need for an accurate and efficient method for identifying subsurface microfractures. These cracks, which are not visible to the naked eye, pose a significant threat to human safety. To tackle this issue, this study explores the use of ultrasonic waves for detecting and characterizing microfractures in carbonate rock subsurfaces in Tunisia. The study involves collecting carbonate rock samples from subsurface formations in Tunisia and analyzing their ultrasonic wave velocity and velocity variations under uniaxial compressive stress in the laboratory. Our results show that ultrasonic methods are a reliable and effective means of detecting microfractures in subsurface materials, even in comparison to other seismic methods. These findings have significant implications for subsurface exploration and the protection of critical structures and highlight the potential of ultrasonic methods for characterizing microfractures in carbonate rock subsurfaces. This study underscores the importance of continued research in this area and highlights the urgency of developing effective methods for detecting subsurface cracks to ensure the safety of communities in seismically active regions.

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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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Study of acoustoelasticity behavior of concrete material under uniaxial compression

Cited by 7 publications

References 0 publications

Nondestructive Investigation of Stress-Induced Damage in Concrete

Nondestructive Investigation of Stress-Induced Damage in Concrete

Characterizing Microcracks in Carbonate Rock Subsurfaces in Tunisia Using Ultrasonic Velocity Variations

Überwachung von Betonkonstruktionen mit eingebetteten Ultraschallsensoren

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