http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
최만용,장경영,김갑용,한응교 한국산업안전학회 1998 한국안전학회지 Vol.13 No.2
Polymer materials have been used extensively as construction materials for automobiles, ships, and airplanes in recent years, and their impact resistance has been obliged to be examined. In the present study, a dropped load and a specimen, equipped with high responsible strain gauges respectively, were dropped and then the changes of load and absorption energy with time were observed. It was found that the waveforms for dropped weight coincided with output signal wave for specimen during the destruction test. Based on this experimental result, three disc type of specimens with different compositions were prepared and examined. This instrumented impact test method showed that each specimen can be distinguished from each other better than conventional tests and is expected to contribute to assess test results of impact resistance for some materials under development.
최만용,윤석기 한국공작기계학회 1997 한국생산제조학회지 Vol.6 No.1
In the past few decades, the measuring instrument industries have made rapid progress with increase of the demand in industries such as precision instrument, chemistry, electronics, industrial measurement and automobile. Thus, development strategy and technical advancement are required for both securing the competitiveness of products in the world market and industrial development. Intensifying competitiveness of measuring instrument is needed in the world market. It can be achieved by development of measuring instrument holding comparative priority. A development strategy should be drawn up in the long-term point of view for coping with the increasing demand of measuring instrument and securing competitiveness in the world market.
Characteristics on Temperature Evolution in the Metallic Specimen by Ultrasound-Excited Thermography
최만용,박정학,강기수,김원태 한국비파괴검사학회 2010 한국비파괴검사학회지 Vol.30 No.3
In ultrasound-excited thermography, the injected ultrasound to an object is transformed to heat and the appearance of defects can be visualized by thermography camera. The advantage of this technology is selectively sensitive to thermally active defects. Despite the apparent simplicity of the scheme, there are a number of experimental considerations that can complicate the implementation of ultrasound excitation thermography inspection. Factors including acoustic horn location, horn-crack proximity, horn-sample coupling, and effective detection range all significantly affect the detect ability of this technology. As conclusions, the influence of coupling pressures between ultrasound exciter and specimen was analyzed, which was dominant factor in frictional heating model.
영상처리기법을 이용한 모노레일 구조물의 노면상태 평가 사례
최만용,김수언,박정학 한국구조물진단유지관리학회 2013 한국구조물진단유지관리공학회지 Vol.17 No.2
영상처리기법(Visible 카메라)을 이용하여 A지역 열차 차량의 주행륜, 안내륜 및 집전슈의 거동상태와 차량의 전 궤도 주행에 대한 주행특성(상하, 좌우 변위)을 30Hz로 측정하여 모노레일 구조물의 노면상태를 평가하고자 한다. 열차 차량의 운행에 따른 상하, 좌우 거동상태, 안내륜 및 가이드레일의 거동상태, 주행륜 및 주행면의 거동상태, 주행륜 및 주행면의 거동상태 및 전차선 및 집전슈의 거동상태를 측정하여 정량적인 데이터를 도출하고자 한다. 차량의 주요 측정지점 7개소에 대해 고해상도 Visible카메라를 장착하여 약 6km구간을 주행시간 동안 1회 측정하고, 녹화된 영상데이터를 분석하였다.
최만용,강경구,김종우 한국비파괴검사학회 2002 한국비파괴검사학회지 Vol.22 No.3
현재까지 다양한 토목구조들은 여러 가지 요인에 의한 노후화와 축적된 손상에도 불구하고 별다른 조치없이 계속해서 사용되고 있었다. 따라서, 이러한 구조물들의 효율적인 유지관리를 위해 계측관리가 중요시되었다. 이에 본 논문에서는 비파괴계측에 의해 사장교의 실시간 계측모니터링시스템을 개발하고자 하며 이를 통해 교량의 안전관리를 하고자 하였다. 계측모니터링시스템은 교량의 유지관리를 도모하고, 교량 관리의 경제적 비용을 줄이게 되며 사장교의 새로운 설계 및 분석방법을 개발하는데 중요한 데이타를 제공할 것이다. Many civil and infrastructure continue to be used despite aging and the associated potential for damage accumulation. Therefore, the ability to monitor the health of these systems is becoming increadingly important. The purpose of this paper is to propose a real time health monitoring system of cable stayed bridge, based on non-destructive measurement. And also this paper focused on the safety assessment for bridge from health monitoring system to accomplish this safety assessment. Using the proposed health monitoring system, it helps bridge maintenance and reduces the economic cost of a life-cycle costs. Also it give important data to develop the design and analysis method for cable stayed bridges.