Searched for: author:"Xia, H."
(1 - 11 of 11)
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Di Maio, F. (author), Rem, P.C. (author), Lotfi, S. (author), Bakker, M.C.M. (author), Xia, H. (author), Hu, M. (author)
other 2016
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Bakker, M.C.M. (author), Xia, H. (author)
Optical inspection of a thick layer of granules for foreign particles does not directly reveal their true number and the more so if the layer is not homogenous. This raises questions such as “how do I know if the layer is homogenous?” and “what is the relation between the observable particles and the true number?” In this work a theory is...
conference paper 2016
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Xia, H. (author), Bakker, M.C.M. (author)
This work investigates the ability of LIBS to produce quality spectra from small particles of concrete demolition waste using single-shot spectra collected in open air. The 2–8?mm materials are rounded river gravel, green glass shards, and plastic flakes. Considered are focal length, air, moisture, laser energy, and laser incidence angle (LIA)....
journal article 2015
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We report new experimental results that use tools from braid theory to characterize two-dimensional turbulent flows driven by Faraday waves. The average topological length of the material fluid lines is found to grow exponentially with time. It allows us to compute the braid’s topological entropy SBraid. We show that SBraid increases as the...
conference paper 2015
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The statistics of the Finite time Lyapunov exponent (FTLE) has been investigated in detail in laboratory 2D flows. The balance of the forward and backward FTLE suggests the incompressible nature of the turbulence in both the electromagnetic and Faraday wave driven experiments. The tail in the PDF of the FTLE field is correlated with the extreme...
conference paper 2015
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We study effects of thin (10 nm) layers of adsorbed proteins on the water surface hydrodynamics. We show that extremely small concentrations of protein (less than 1 ppm) form strong viscoelastic layer at the water-air interface. This layer greatly reduces single particle dispersion on the surface perturbed by Faraday waves and turns disordered...
conference paper 2015
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Lotfi, S. (author), Di Maio, F. (author), Xia, H. (author), Serranti, S. (author), Palmieri, R. (author), Bonifazi, G. (author)
One of the main challenging problems associated with the use of Recycled Aggregates (RA) is the level of mixed contaminants. For utilizing RA in high-grade applications, it is essential to monitor and minimise the content of the pollutants. To this extent the C2CA concrete recycling process investigates a combination of smart demolition,...
conference paper 2015
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Xia, H. (author), Bakker, M.C.M. (author)
conference paper 2015
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Xia, H. (author), Bakker, M.C.M. (author)
conference paper 2014
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Xia, H. (author), Bakker, M.C.M. (author)
In the C2CA project, an online sensor system is required to measure and control the quality and homogeneity of demolition concrete continuously. Laser-induced breakdown spectroscopy is a candidate to fulfil the objective in several tasks. Investigated is the ability of LIBS as an online semi-quantitative composition analysis technique. The...
conference paper 2012
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Xia, H. (author)
PhD EU project poster: C2CA.
journal article 2012
Searched for: author:"Xia, H."
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