• The Monthly Technology and Standards
• /
• s.13
• /
• pp.65-72
• /
• 2003

• The Monthly Technology and Standards
• /
• s.20
• /
• pp.24-27
• /
• 2003

• The Monthly Technology and Standards
• /
• s.73
• /
• pp.30-36
• /
• 2008

• The Monthly Technology and Standards
• /
• s.18
• /
• pp.52-61
• /
• 2003

• The Monthly Technology and Standards
• /
• s.21
• /
• pp.32-35
• /
• 2003

• The Monthly Technology and Standards
• /
• s.26
• /
• pp.8-12
• /
• 2004

• Korean Journal of Metals and Materials
• /
• v.48 no.3
• /
• pp.203-209
• /
• 2010

An application of the instrumented indentation technique has been expanded from the measurements of hardness and elastic modulus to the analysis of residual stress. A slope of the indentation loading curve increases (or decreases) according to compressive (or tensile) residual stress. A theoretical equation has been established for quantifying residual stress from the slope change. However, a precise observation of the remnant indents is indispensible because the theoretical approach needs actual contact information. In addition, the conventional hardness test is still used for predicting the residual stress distribution of welded joints. Thus, we observed the three-dimensional morphologies of the remnant indents formed on artificial stress states and analyzed stress effects on morphological recovery of the indents. First, a depth recovery ratio, which has been regarded as a sensitive stress indicator, did not show a clear dependency with the residual stress. Thus an analysis on volumetric recovery was tried in this study and yielded a inverse proportional behavior with the residual stress. In addition, an elastic to plastic volume recovery ratio showed more significant correlation with the residual stress.

• Journal of Technology Innovation
• /
• v.23 no.3
• /
• pp.137-167
• /
• 2015

Based on the stakeholder theory, this paper analyzes a clash of standards in Korea's Electric Vehicle(EV) market, particularly between an EV charging standard and a smart grid communication standard in 2012~2013. For charging, EV is connected with the electric power grid and simultaneously exchanges data regarding the charging status. When EV is connected with the power grid, a clash between two standards may arise. It actually happened when BMW entered into the Korean EV market with the DC Combo charging system. In that course, the frequency interference occurred between the EV data communication technology adopted by BMW and the AMI(Advanced Metering Infrastructure) for the smart grid system in Korea. Standardization of Korea's EV charging systems was required to solve this problem. However, it had been delayed due to the confrontation between various stakeholders involved in the process of standardization. It lasted until the DC combo was accepted as one of the Korea EV charging standards(KSAE SAE 1772-2040, 2014.1) by KSAE(The Korea Society of Automotive Engineers) in January 2014. This is an interesting case in the age of convergence. As it deals with the standard competition not among EV standards, but a clash between the EV industry and the smart grid, i.e. electric power industry, it addresses the necessity to consider standardization processes between different industries. This study draws on the stakeholder theory to analyse the dynamics of the standard clash between EV charging systems and the smart grid system, which is a unique example of standard clash between different industries. We expect such clashes to increase in the age of convergence.

• JOURNAL OF ELECTRICAL WORLD
• /
• s.281
• /
• pp.17-21
• /
• 2000

우리나라 전력산업사의 큰 이정표가 될 한국표준형 원전 울진 4호기의 준공식이 지난 2월 24일 경북 울진의 한국전력공사 울진 원자력본부에서 박태준 국무총리, 김영호 산업자원부장관 등 중앙인사와 이의근 경북도지사, 신정 울진 군수 및 지역주민이 참석한 가운데 거행되었다. 1998년 8월 준공된 최초의 한국표준형 원전인 울진 3호기에 이어 두 번째 한국표준형 원전 울진 4호기가 이번에 중공 됨으로써, 1992년 5월 본관기초굴착을 시작한 이래, 7년여의 긴 시간을 거쳐 마침내 우리 기술로 지은 최초의 한국표준형 원자력발전소 건설사업이 완료되었다.

• Review of KIISC
• /
• v.33 no.4
• /
• pp.125-129
• /
• 2023

ISO/TC307 기술위원회는 분산원장 기초적인 기술표준에서 응용, 디지털자산 및 디지털 화폐와 같은 응용/서비스 표준개발로 중심이 이동한 듯한 분위기이다. 영국이 TC68과의 협동으로 디지털 화폐 개발에 열정을 보이고 있다. 금융대국영국이 블록체인 기반 디지털 금융 산업에서 선두 지위를 확보하고자 노력하고 있다는 것을 피부로 느낄 수 있는 회의였다고 판단이 된다. 한편 미국은 NFT를 이용한 물리 자산의 디지털 표현 표준을 담당하는 WG8을 신설 한 것은 선진국가들이 블록체인을 이용하여 산업의 실질 표준개발을 지향하고 있다고 판단한다. 이에 한국에서도 블록체인감사지침, 분산원장을 위한 27002 등을 제안하여 표준개발 중이다.