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Titel Characterization of Construction Materials using X-ray CT
Manage Geotechnical Engineering Research Instiute Date 2017.09.07 Hit 609

 

Characterization of Construction Materials using X-ray CT

 

Research Supervisor: Kim, Kwang Yeom (Research Fellow, kimky@kict.re.kr)
 


■ Overview

 
The Korea Institute of Civil Engineering and Building Technology possesses platform technologies related to the evaluation of materials based on multi-tube industrial X-ray CT devices and CT imaging for the X-ray CT (computed tomography) imaging assessment of construction materials. Through the use of such technologies, while quantifying the features for various construction materials, it also suggests new methodologies for acquiring and evaluating new information on materials, which was not possible in the past.

Using this new evaluation method, 3D penetration images inside of materials provided by the X-ray CT device were integrated with material analysis technologies to overcome the limitations of past construction material analysis methods in order to procure new engineering technologies with high added value. By using this new material evaluation method, this technology will provide critical analysis services, and furthermore, can be used to derive international standards for the characterization of materials.

The research achievements of this project were assessed to be high, and in 2016, this marked the first time in the nation that a government funded research institute won the DESTRESS project, a joint international research project of EU Horizon2020. This is a joint research project with European partners, and the purpose of this project is to develop and prove geothermal reservoir formation technologies.
 
 
 
  Multi-tube industrial X-ray CT device   Multi-tube industrial X-ray CT device
▲ Multi-tube industrial X-ray CT device
 
 
 
■ Background and Need for Research
 
 
In recent years, there has been growing international interest in the characterization of materials using X-ray CT. X-ray CT filming and analysis has the advantage of enabling quantitative evaluation, in addition to the ability to observe internal material features that could not be measured through existing methods using X-ray CT.

Micro CT is a method that uses the characteristic of an X-ray, in which the energy dissipation of the X-ray changes according to the density of materials. Using this characteristic, it is possible to extract key information for evaluating the distribution of components inside materials, pore sizes, pore quantity, etc. The aim of this study was to procure platform technologies that could be utilized in key areas such as long-term behavior assessment of construction materials and performance evaluation of structures using such new evaluation methods of materials.
 
 
 
  DESTRESS International Joint Research Achievement
  DESTRESS International Joint Research Achievement
▲ DESTRESS International Joint Research Achievemen
 
 
 
■ Research Contents
 
 
X-ray CT-based material evaluation technologies procured through the research are as follows.
 
● Development of phase separation techniques based on statistics processing
● Statistical analysis-based material anisotropy analysis
● Porosity analysis using SPF
● Particle form analysis technology
● Construction of dynamic behavior evaluation system within X-ray CT chamber
 
 
 
  Research achievements and data sharing platform Research achievements and data sharing platform  
▲ Research achievements and data sharing platform
 
 
 
■ Research Achievements
 
 
The purpose of this study is to quantify observations on materials through X-ray CT imaging evaluations of construction materials. Various image evaluation technologies were developed to this end, and this has led to a number of academic accomplishments and industrial property rights such as domestic and international patents, publications in international SCI theses, etc.
 
● First government funded research institute to participate in the Horizon2020 project
● Presentation at internal academic conference, by invitation with all expenses paid for
● Won joint international research project (British Swansea and Swiss NAGRA) and signed MOU
● 7 cases of supporting small and medium companies related to X-ray CT technologies
● Total of 2,620 cases of DB construction
● Start-up business creation and technology transfer (ECME)
● 13 theses in SCI and SCIE-level journals, and 5 domestic theses
● Registered 8 domestic patents and 1 international patent (Japan), 2 international patents pending (US, Japan), 13 SW registration, 11 cases of press PR
● Appeared on YTN Science show and 10 cases of press PR
● Efficient use of DB and service PR by operating homepage
 
 
 
   DB and service model packaging for each material DB and service model packaging for each material
▲ DB and service model packaging for each material 
 
 
 
■ Expected Effects
 
 
Through the results of this study, it was possible to visualize the interior of specimens using a means that was not possible in the past, and it is judged that it will be possible to procure material evaluation technologies and application results in a new dimension.
This technology enables an analysis of quantified results by observing the interior without deforming or destroying materials, and is therefore expected to result in cost savings of billions of won every year, by reducing both working time and expenses. Furthermore, it is also expected to create profits by winning international orders, which will improve the international status of Korean companies, and also will enhance national safety by supporting status assessments of shielding materials for nuclear power generators.

In particular, it is judged that the analysis technologies procured in this study will contribute significantly to carrying out international joint research derived from this study, and that in the future, this technology will be used by the international community for large projects and additional joint international research.

In addition, it is judged that the informatization of X-ray CT images and the physical features of various materials and the construction of a DB will provide support not only for the public sector, but also for the private sector in relevant industries.
 
 
 
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