Improved assessment of mass concrete dams using acoustic travel time tomography. Part I — theory

Bond, Leonard J.; Kepler, William F.; Frangopol, Dan M.

doi:10.1016/s0950-0618(00)00014-3

Cited by 58 publications

(24 citation statements)

References 19 publications

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“…The elastic wave tomography is characterized as its capability that visualizes anomalous regions or distribution of physical properties in the measured object [1], and applied for soundness evaluation of the structures by using the feature in recent. Aggelis and Shiotani visualized a crack and confirmed the effectiveness of repair in two-dimensional analysis [2].…”

Section: Introductionmentioning

confidence: 99%

Mesh-independent ray-trace algorithm for concrete structure

Kobayashi

2013

Construction and Building Materials

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Section: Introductionmentioning

confidence: 99%

Mesh-independent ray-trace algorithm for concrete structure

Kobayashi

2013

Construction and Building Materials

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“…NDT for concrete using ultrasonic pulse velocity (UPV) dates back to the availability of relatively inexpensive instruments developed in the 1970's. A variety of other technologies have followed and these have been extensively discussed in the literature 51,52 . Most recently an assessment of the state of the art for concrete structures has been provided by the German, BAM 6 .…”

Section: Large Scale Composites Pipes and Concretementioning

confidence: 99%

Needs and opportunities: nondestructive evaluation for energy systems

Bond

2015

SPIE Proceedings

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Advanced manufacturing and new energy systems are presenting a wide variety of challenges for nondestructive testing and evaluation (NDT/NDE). This paper discusses the state of the art, needs and opportunities for NDE to provide reliable, effective and economic inspection and monitoring for energy systems. It introduces issues of materials, defects and allowables, the evolution of advanced NDT and NDE and then considers examples of NDE for energy systems. These include applications in the petrochemical industry, advanced and additive manufacturing, solar cells, wind turbines, nuclear systems and some underlying issues of large scale composites, pipes and concrete. Disciplines Structures and Materials Comments ABSTRACTAdvanced manufacturing and new energy systems are presenting a wide variety of challenges for nondestructive testing and evaluation (NDT/NDE). This paper discusses the state of the art, needs and opportunities for NDE to provide reliable, effective and economic inspection and monitoring for energy systems. It introduces issues of materials, defects and allowables, the evolution of advanced NDT and NDE and then considers examples of NDE for energy systems. These include applications in the petrochemical industry, advanced and additive manufacturing, solar cells, wind turbines, nuclear systems and some underlying issues of large scale composites, pipes and concrete.

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“…Büyüköztürk imaged the complex concrete structure via ultrasonic CT, indicating that this technique has accuracy capability with high resolution [18]. Bond et al used acoustic travel time tomography to assess a mass concrete dam, presenting cross-sectional images of the structure to locate cracks and other damages [19,20].…”

Section: Introductionmentioning

confidence: 99%

Improved Ultrasonic Computerized Tomography Method for STS (Steel Tube Slab) Structure Based on Compressive Sampling Algorithm

2017

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This paper developed a new ultrasonic computerized tomography (CT) method for damage inspections of a steel tube slab (STS) structure based on compressive sampling (CS). CS is a mathematic theory providing an approximate recovery for a sparse signal with minimal reconstruction error from under-sampled measurements. Considering the natural sparsity of the damage, CS algorithm is employed to image the defect in the concrete-filled steel tube of Shenyang Metro line 9 for reducing the work time. Thus, in the measurement stage, far fewer ultrasonic measurement paths were selected from the dense net of conventional ultrasonic CT techniques to capture the underlying damage information. Then, in the imaging stage, 1 -norm minimization algorithm of CS theory is selected to recover the internal damage via fusing measurement data and solving optimization problem. The functionality of the proposed method is validated by three numerical concrete tube models with various conditions. Additionally, both the conventional ultrasonic CT technique and the proposed one are employed for ultrasonic inspection of the STS structure in Shenyang Metro line 9. Both the numerical and experimental results indicate that the proposed ultrasonic CT improved by CS has a great potential for damage detection, which provides an alternative accurate and effective way for non-destructive testing/evaluation (NDT/E).

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Improved assessment of mass concrete dams using acoustic travel time tomography. Part I — theory

Cited by 58 publications

References 19 publications

Mesh-independent ray-trace algorithm for concrete structure

Mesh-independent ray-trace algorithm for concrete structure

Needs and opportunities: nondestructive evaluation for energy systems

Improved Ultrasonic Computerized Tomography Method for STS (Steel Tube Slab) Structure Based on Compressive Sampling Algorithm

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