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Journal ArticleDOI

Quantitative study of meso-damage process on concrete by CT technology and improved differential box counting method

01 Aug 2020-Measurement (Elsevier)-Vol. 160, pp 107832
TL;DR: In this paper, an improved differential box counting (IDBC) method was proposed to calculate the fractal dimension of the CT images, which could describe the entire damage process of concrete.
About: This article is published in Measurement.The article was published on 2020-08-01. It has received 26 citations till now. The article focuses on the topics: Box counting & Fractal.
Citations
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Journal ArticleDOI
Cheng Liu1, You Zhan1, Qiangsheng Deng1, Yanjun Qiu1, Allen Zhang1 
TL;DR: Li et al. as discussed by the authors proposed an improved differential box counting (IMDBC) to estimate fractal dimension of three-dimensional (3D) pavement texture image based on grid displacement mechanism.

18 citations

Journal ArticleDOI
TL;DR: In this paper, the authors attempted to trace the imbibition fronts and paths in concrete by controlling specimen dimensions and imbibion liquids in transmission microfocus X-ray radiographic tests.

13 citations

Journal ArticleDOI
TL;DR: A more efficient image processing method with the aid of smartphone imaging was adopted to rate the segregation level of asphalt pavement surface and it was found that it is an encouraging approach to evaluate the surface segregation based on CDC.

10 citations

Journal ArticleDOI
TL;DR: In this paper, a series of CT tests were carried out on the damage process of concrete under tensile and compression loads, and CT images of the whole process of the concrete failure were obtained.

8 citations

Journal ArticleDOI
TL;DR: In this article , surface-enhanced Raman scattering (SERS) from probe molecules of Methylene blue and Rhodamine B was used as a template for surface plasmonic gold nanoparticles (NPs).
Abstract: Silicon nanowires (SiNWs) prepared by metal-assisted chemical etching of crystalline silicon wafers followed by deposition of plasmonic gold (Au) nanoparticles (NPs) were explored as templates for surface-enhanced Raman scattering (SERS) from probe molecules of Methylene blue and Rhodamine B. The filling factor by pores (porosity) of SiNW arrays was found to control the SERS efficiency, and the maximal enhancement was observed for the samples with porosity of 55%, which corresponded to dense arrays of SiNWs. The obtained results are discussed in terms of the electromagnetic enhancement of SERS related to the localized surface plasmon resonances in Au-NPs on SiNW’s surfaces accompanied with light scattering in the SiNW arrays. The observed SERS effect combined with the high stability of Au-NPs, scalability, and relatively simple preparation method are promising for the application of SiNW:Au-NP hybrid nanostructures as templates in molecular sensorics.

7 citations

References
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Journal ArticleDOI
01 Apr 1984-Nature
TL;DR: In this article, a new method, slit island analysis, is introduced to estimate the fractal dimension, D. The estimate is shown to agree with the value obtained by fracture profile analysis, a spectral method.
Abstract: When a piece of metal is fractured either by tensile or impact loading (pulling or hitting), the fracture surface that is formed is rough and irregular. Its shape is affected by the metal's microstructure (such as grains, inclusions and precipitates, whose characteristic length is large relative to the atomic scale), as well as by ‘macrostructural’ influences (such as the size, the shape of the specimen, and the notch from which the fracture begins). However, repeated observation at various magnifications also reveals a variety of additional structures that fall between the ‘micro’ and the ‘macro’ and have not yet been described satisfactorily in a systematic manner. The experiments reported here reveal the existence of broad and clearly distinct zone of intermediate scales in which the structure is modelled very well by a fractal surface. A new method, slit island analysis, is introduced to estimate the basic quantity called the fractal dimension, D. The estimate is shown to agree with the value obtained by fracture profile analysis, a spectral method. Finally, D is shown to be a measure of toughness in metals.

1,651 citations

Journal ArticleDOI
TL;DR: A condition is the on that will make you feel that you must read as mentioned in this paper, which is the condition that makes us feel that reading is a need and a hobby at once.
Abstract: Some people may be laughing when looking at you reading in your spare time. Some may be admired of you. And some may want be like you who have reading hobby. What about your own feel? Have you felt right? Reading is a need and a hobby at once. This condition is the on that will make you feel that you must read. If you know are looking for the book enPDFd fractals form chance and dimension as the choice of reading, you can find here.

1,041 citations

Journal ArticleDOI
TL;DR: A new model is proposed to assign the smallest number of boxes to cover the entire image surface at each selected scale as required, thereby yielding more accurate estimates of fractional dimension estimation accuracy.

456 citations

Journal ArticleDOI
TL;DR: In this paper, a meso-scale finite element model with realistic aggregates, cement paste and voids of concrete is developed using micro-scale X-ray Computed Tomography images.

275 citations