• Title/Summary/Keyword: Test Standards

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A review of test norm of Non-insulated AF Track Circuit (무절연 가청주파수(AF) 궤도회로 시험기준 고찰)

  • Chang, Seok-Gahk;Lee, Chang-Young;Kwon, Sung-Tae
    • Proceedings of the KSR Conference
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    • 2007.05a
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    • pp.1701-1706
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    • 2007
  • Jointless AF(Audio Frequency) Track Circuit is more comfortable than exist joint track circuit. This electrical circuit's function is detection train on rail, and transmit information between wayside and vehicle. 'Korea Railroad Corporation' proposed for revision of the Korean railway standards(KRS SG 0038-06 R, 2006.5.16) "Non-insulated AF Track Circuit". This proposal equipment developed to extend use for station of National Railway exist line. According to test standards Korean railway safety law and its ordinances, which were committed to Korea Railroad Research Institute, the professional committee 'Railway facility sector II' have helded on January in 2007. In this investigation, the changed test norm will be review the difference of important function test standards of new version to conform effectivity and safety test procedure according to the KS A 1025.

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A Study of Inspection Module for Verifying Reliability on Railway Vehicle (철도차량 검측모듈의 신뢰성 검증 시험 연구)

  • Na, Kyung-min;Park, Young;Kwon, Sam-young
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.66 no.7
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    • pp.1155-1161
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    • 2017
  • This study examines environmental performance of the arcing measurement module according to international standards. The module assesses the collected current performance using a computer system. The module is required to assess environmental impact resulting from electromagnetic waves, shock and temperature change during train operation. The test includes testing EMI/EMC, vibration, shock and temperature cycling for interface between trains and the arcing measurement module. The module test items were determined in compliance with the standards suggested by the International Electrotechnical Commission (IEC) and Europaische Norm (EN). This study describes the method of test, test equipment operation and how to choose relevant performance standards. The analysis and test results of environmental performance for the module based on computer system are described in this study.

Comparison of Climatic Environmental Test Standards of MIL-STD-810 and IEC Pub. 60068 (MIL-STD-810과 IEC Pub. 60068 기후적 환경시험 규격의 비교)

  • Kim, H.J.;Kim, M.S.
    • Journal of Applied Reliability
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    • v.9 no.2
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    • pp.81-91
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    • 2009
  • This paper presents the comparison of climatic environmental tests of IEC Pub. 60068 and MIL-STD-810. Cold, dry heat, change of temperature, and heat-humidity cyclic tests are compared in terms of the types of tests and test severities. This study shows the difference between the standards, which will provide the useful information to the industries and be helpful in applying the standards.

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Study on the Fundamental Properties of Tile Grout Cement as International Standards (타일 줄눈용 시멘트의 국제규격에 따른 기초 물성 평가)

  • Hong, Sung-Rog;Park, Hun-Il;Cho, Byoung-Young
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2014.05a
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    • pp.106-107
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    • 2014
  • This study dealt with an experimental study on development of tile grout cement complied with international standards criteria. Tile Grout Cement is divided two grade, 1 type and 2 type, in KS F 1592:2011. International Standards(ISO) is divided 9 grade. performance evaluation for cement content was measured according to KS L ISO 13007. water absorption test results are based on the cement content 30% were satisfied with International Standards criteria. strength test results are based on the cement content 25% were satisfied with International Standards criteria.

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A Study on Safety Standards for the Interior of an Artillery Firing Range Considering Probable Error (공산오차를 고려한 국내 포병사격장 안전기준 분석 연구)

  • Juhee Kim;Kieun Sung
    • Journal of the Korea Institute of Military Science and Technology
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    • v.26 no.2
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    • pp.139-148
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    • 2023
  • Safety standards for long-range artillery ammunition test and training sites follow the US artillery shooting range safety zone standards. Although the South Korean geographical conditions of shooting ranges are different from those of the United States, there is no safety standard reflecting the South Korean topographical characteristics. Probable error associated with the shooting range, trajectory should be considered in establishing the safety standards. In this study, we present the safety standards for the ammunition testing site suitable for the Korean situation, with applying a concept of trajectory and probable error differed by ammunition type, which are currently confirmed by the South Korean Army's artillery shooting.

A Study on the Automated Compatibility Standard Test System for eBook DRM (전자책 DRM을 위한 자동화된 표준정합성 검사 시스템에 관한 연구)

  • Kim, Tae-Hyun;Kang, Ho-Gap;Ahn, Chang-Ju;Cho, Seong-Hwan
    • The Journal of the Institute of Internet, Broadcasting and Communication
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    • v.13 no.2
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    • pp.127-136
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    • 2013
  • The study of the compatibility of EPUB DRM, granted by the Korea Copyright Commission, as a CT R & D project (Project Title: The Development of the standard reference software technology for International Standard EPUB-based eBook DRM) developed standards such as profile standards for encryption digital signature and authentication certificates and standards for technical terms of rights information. In 2012, these four standards have been established as the Korean Industrial Standards under the names of 'Encryption specification for EPUB DRM,' 'the Digital signature specification for EPUB DRM,' 'the Certificate specification for EPUB DRM,' and 'Definitions of Right Terms for EPUB DRM' through the ODPF(Open Digital Standardization Forum) and the TTA(Telecommunications Technology Association). The research project also proposed standards of ebook DRM license protocols in order for the four standards to practically apply to ebook DRM compatibility. It is necessary for technology standards to require a compatibility standard test process for testing whether implementations which were developed on the basis of the standard specification, comply with standards. This study suggests an automated compatible standard test method and a test model under the ebook DRM standard technical specification.

Development of a Techniques of the Performance Test for a Radiation Protection Devices and it's International Standards (방사선 방호용 계측기 성능평가 기술 개발 및 국제 표준)

  • Choi, Kil-Oung;Won, Sung-Ho;Kim, Jung-Ho;Hah, Suck-Ho;Yi, Chul-Young;Kim, Hyun-Moon;Lee, Min-Kee
    • Journal of Radiation Protection and Research
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    • v.33 no.1
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    • pp.1-12
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    • 2008
  • International Standardization in all technical area is gaining its momentum as its impact and implication over global trade is directly linked. The worldwide competition to secure a dominant position in the standardization process is ever growing over the years. In 2005, the International Technical Committee on Nuclear Instrumentation, which is a subunit of International Electro-technical Commission (IEC), was held in Korea under the auspices of MOST (Ministry of Science and Technology). Korea has adopted its Rule and Regulation as the National Standard. As a part of a link to National Mid-and Long-term Atomic Energy R&D Program of MOST, the technical development of a performance test for the radiation monitors was carried out under mechanical environment and electromagnetic immunity conditions. The characteristics of the radiation fields were also evaluated under the conditions and introduced to a techniques of performance test for the radiation protection instrumentation adopted IEC61526 standards and it's results was analyzed. We would like to share the experience gained in these efforts, failure as well as success, and to discuss the problems encountered and serious consideration to be taken into account in the future endeavor.