Korea Agency for Technology and Standards

Gwacheon, South Korea

Korea Agency for Technology and Standards

Gwacheon, South Korea

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Moon S.,Sejong University | Rhim S.,Kyung Hee University | Cho Y.-J.,Electronics and Telecommunications Research Institute | Park K.-H.,Korea Agency for Technology and Standards | And 2 more authors.
Robotica | Year: 2013

This paper summarizes the recent standardization activities in the field of robotics by ISO (International Organization for Standardization), IEC (International Electrotechnical Commission), OMG (Object Management Group), and other organizations. While the standards in industrial robots have been mainly developed by ISO, the standards on the emerging service robots are initiated by many organizations. One of the goals of this paper is to coordinate the efforts among these groups so that more effective standardization activity can be executed. Standardization in the emerging service robots will eventually promote the proliferation of service robot markets in the near future. © Cambridge University Press 2012.


Kim Y.S.,Korea Environment and Merchandise Testing Institute | Kim Y.S.,Seoul National University | Song M.Y.,Korea Environment and Merchandise Testing Institute | Park J.D.,Chung - Ang University | And 10 more authors.
Particle and Fibre Toxicology | Year: 2010

Background: The antibacterial effect of silver nanoparticles has resulted in their extensive application in health, electronic, consumer, medicinal, pesticide, and home products; however, silver nanoparticles remain a controversial area of research with respect to their toxicity in biological and ecological systems.Results: This study tested the oral toxicity of silver nanoparticles (56 nm) over a period of 13 weeks (90 days) in F344 rats following Organization for Economic Cooperation and Development (OECD) test guideline 408 and Good Laboratory Practices (GLP). Five-week-old rats, weighing about 99 g for the males and 92 g for the females, were divided into four 4 groups (10 rats in each group): vehicle control, low-dose (30 mg/kg), middle-dose (125 mg/kg), and high-dose (500 mg/kg). After 90 days of exposure, clinical chemistry, hematology, histopathology, and silver distribution were studied. There was a significant decrease (P < 0.05) in the body weight of male rats after 4 weeks of exposure, although there were no significant changes in food or water consumption during the study period. Significant dose-dependent changes were found in alkaline phosphatase and cholesterol for the male and female rats, indicating that exposure to more than 125 mg/kg of silver nanoparticles may result in slight liver damage. Histopathologic examination revealed a higher incidence of bile-duct hyperplasia, with or without necrosis, fibrosis, and/or pigmentation, in treated animals. There was also a dose-dependent accumulation of silver in all tissues examined. A gender-related difference in the accumulation of silver was noted in the kidneys, with a twofold increase in female kidneys compared to male kidneys.Conclusions: The target organ for the silver nanoparticles was found to be the liver in both the male and female rats. A NOAEL (no observable adverse effect level) of 30 mg/kg and LOAEL (lowest observable adverse effect level) of 125 mg/kg are suggested from the present study. © 2010 Kim et al; licensee BioMed Central Ltd.


Moon S.,Sejong University | Lee S.-G.,Kyung Hee University | Park K.-H.,Korea Agency for Technology and Standards
Proceedings of the SICE Annual Conference | Year: 2010

This paper introduces recent progress made for vocabulary standardization efforts in ISO TC 184/SC 2(robots and robotic devices). The previous standard on vocabulary, ISO 8373, was published in 1994, and it was mainly focused on vocabularies for industrial robots. A working group on vocabulary was formed in 2007 to revise the existing standard and to expand it to cover the terminologies for service robots. The preliminary document has been studied by experts and new work item proposal was accepted recently. © 2010 SICE.


Ham J.-O.,Korea Testing and Research Institute | Kim B.-G.,Korea Testing and Research Institute | Lee S.-H.,Korea Agency for Technology and Standards
Journal of Korean Institute of Metals and Materials | Year: 2011

To measure the sensitivity of the hydrogen embrittlement from plated high strength bolts (SWCH 18A, F11T), the bolt was stressed by a corresponding to the amount of tensile strain of 5% and 20%, and then the bolt developed a crack on the surface. The bolt that didn't have concentrated hydrogen, even though it was stressed by a corresponding the amount of tensile strain of 5% and 20%, no crack developed. However, the bolt that had concentrated hydrogen, developed cracks from the thread crest to the root. It is impossible to measure the hydrogen amount from plated high strength bolts using Hydrogen-Determinator, because of the limitation of the minimum sample size (about 1g as a mass or 5 × 5 × 5 mm3 as a volume). Therefore, the sensitivity of hydrogen embrittlement can be measured by observing the presence of cracks on the surface of plated high strength bolts which are stressed by a corresponding to the amount of tensile strain of 5% and 20%.


Ham J.-O.,Korea Testing and Research Institute | Jang Y.-H.,Korea Testing and Research Institute | Lee G.-P.,Korea Testing and Research Institute | Kim B.-G.,Korea Testing and Research Institute | And 2 more authors.
Materials Science and Engineering A | Year: 2013

In this study, high strength bolts of 1100. MPa and 1300. MPa grades were charged with hydrogen to measure the sensitivity of hydrogen embrittlement (HE). Different levels of stress conditions based on various tensile stress and strain rates were applied. The bolts were then examined to see whether cracks were formed on the screw threads. The tensile stress and strain rate condition producing the most number of cracks on the screw thread of the bolt was decided as the most suitable test condition for the measurement of sensitivity of HE. For 1100. MPa grade high strength bolts, the most cracks were observed at the tensile stress ratio of 0.85 (load of 80. kN) and strain rate of 1.6×10E-5/s, while for 1300. MPa grades, the most cracks were observed at tensile stress ratio 0.87 (load of 100. kN) and strain rate of 1.6×10E-5/s. No cracks were found on the screw threads of bolt when the strain rate was increased over 8.3×10E-4/s. © 2013 .


Jang H.-S.,Myongji University | Lee D.-C.,Myongji University | Yun S.-Y.,Zenithtek | Kim J.-O.,Korea Agency for Technology and Standards | And 2 more authors.
2011 International Conference on Information Science and Applications, ICISA 2011 | Year: 2011

The CMD (Condition Monitoring Diagnosis) which diagnoses power grid health status has been one of the major issues in power grid to improve the reliability of the power system by preventing a potential failure in advance. Since too many different CMD techniques in various forms from many vendors are currently used, they need to be standardized. IEC 61850 shall be used to communicate with the condition monitoring equipment. A seamless communication with the sensor network shall be achieved as well. © 2011 IEEE.

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