• 한국컴퓨터정보학회논문지
• /
• 제21권3호
• /
• pp.9-15
• /
• 2016

In this paper, DC-PLC typed one-wire controller was designed and manufactured especially for In-vehicle safe devices. One-wire by DC-PLC scheme is to be used as a power supply and ground to process the sensor data and to operate the vehicle actuators. To avoid complicate wires, we use the conventional wires without installing extra communication lines. The data collected from the sensors are transmitted to the main controller, processed by programming, and run the actuators corresponding to the commands sending to vehicle control board. The proposed method shows that only One-wire without requiring several wires make In-vehicle control devices simple and reduce the damage due to the loss of the wiring.

• 한국초전도ㆍ저온공학회논문지
• /
• 제22권2호
• /
• pp.32-37
• /
• 2020

Sam Dong Co., Ltd. has been succeeded in producing a 1 km multi-filament conductor in 2018. So far, we become more widespread to fabricate a variety of customized multi-filament wires such as 6 + '1' Cu, 18 + '1' Cu, and 36 + '1' Cu. In this work, we discuss the research progress on various MgB₂ wires over the past three years. We also provide a brief review for applications with our wires.

• 한국콘크리트학회:학술대회논문집
• /
• 한국콘크리트학회 2006년도 춘계학술발표회 논문집(I)
• /
• pp.570-573
• /
• 2006

It is proposed that the electromechanical relation of the conductive materials with high electrical resistance may be used to estimate the current stress of prestressing tendons. To choose the best conductive material to this end, we studied the electromechanical relations of carbon fibers and metalic heat wires experimentally. It is found that the relation of carbon fibers can be modelled by a parabolic(or hyperbolic) function in the early stage of deformation. Metallic heat wires show a consistent linear relation during loading and unloading in the elastic deformation and are suitable for this purpose. We propose a new kind of prestressing tendons whose stress can be monitored.

• 대한전기학회:학술대회논문집
• /
• 대한전기학회 2001년도 하계학술대회 논문집 C
• /
• pp.1709-1711
• /
• 2001

The remaining life of ACSR(Aluminum Conductor Steel Reinforced) wires exposed to the atmosphere for a long period relies on the extent of deterioration caused by environmental factors such as atmospheric corrosion, galvanic corrosion, crevice corrosion and fatigue corrosion. We investigated the tensile characteristics of ACSR wires in a coastal area through several mechanical tests, and analyzed the constituents of them using SEM(scanning electron microscope). Test samples are parts of ACSR 97[$mm^2$] overhead transmission lines in that area. The result shows that ACSR wires exposed to salt may lead to rapid mechanical deterioration.

• 대한전기학회:학술대회논문집
• /
• 대한전기학회 2000년도 학술대회 논문집 전문대학교육위원
• /
• pp.22-25
• /
• 2000

Time dependent ozone generation characteristics of some oxide layers grown by ozone on the surface of corona discharge wires have been investigated experimentally in air ambience. Four wires of stainless steel, iron, silver and copper were used for the corona discharge wire of an ozone generator. And the effect of the metal oxide layers on ozone generation was studied and the contamination morphology of each layers was characterized. With the SEM images and the EDS spectra, it was found that all the surface of the corona wire were oxidized by the generated ozone and contaminated by airborne particles through the gradient force. As a result, the morphology and the electrical property of metal oxide layer grown on corona wire surface influenced on ozone generation characteristics i.e. discharge mechanisms.

• Structural Engineering and Mechanics
• /
• 제31권3호
• /
• pp.241-264
• /
• 2009

In this paper, the dynamic behavior for a group of transmission towers linked together through electrical wires and subjected to a strong ground motion will be investigated in detail. In performing the seismic analysis, the wires and the towers concerned are modeled, respectively, by using the efficient cable elements and the 3-D beam elements both considering geometric nonlinearities. In addition, to enhance the reliability and applicability of analytical outcome, a sophisticated soil-structure interaction model will be utilized in analyses. The strength capacities and the fracture occurrences for the main members of the tower are examined with the employment of the appropriate strength interaction equations. It is expected that by aid of this investigation, those who are engaged in code constitution or in practical designing of transmission towers may gain a better insight into the roles played by the interaction force between towers and wires and by the configurations of transmission lines under strong earthquake.

• Smart Structures and Systems
• /
• 제4권2호
• /
• pp.153-169
• /
• 2008

The use of pre-tensioned shape memory alloy (SMA) wires to retrofit historic masonry structures is investigated. A small wall, serving as a prototype masonry specimen, is constructed to undergo a series of shaking-table tests. It is first studied in its original state, and its dynamic characteristics (in terms of modal frequencies) are extracted from the recorded signals. The results are then compared with those obtained when an increasing number of couples of pre-stressed SMA wires are introduced in the specimen to link the bricks together. A three-dimensional finite element model of the specimen is developed and calibrated according to the modal parameters identified from each experimental test (with and without SMA wires). The calibration process is conducted by enhancing the masonry mechanical behaviour. The results and the effectiveness of the approach are presented.

• JSTS:Journal of Semiconductor Technology and Science
• /
• 제13권5호
• /
• pp.482-491
• /
• 2013

This paper explains modeling and analysis of RC-dominant wires for high-speed wireline transceiver design. A closed form formula derived from telegrapher's equation accurately describes a frequency response of an RC-dominant wire, yet it is simple and intuitive for designers to easily understand design trade-offs without a complex numerical equation solver. This paper explains how the model is derived and how it can help designers in example transceiver designs.

• Journal of Welding and Joining
• /
• 제19권6호
• /
• pp.630-635
• /
• 2001

The characteristics of spatter generation in the short circuit transfer region of $CO_2$ welding was investigated. Spatteriing phenomena could be classified into three types : Type I generated due to the abrupt increase of arc voltage in arcing duration. Type II by the gas ejection from molten metal and Type III generated by the arc instability at the moment of arc re-ignition just after short circuiting. Main observed types were dependent on the chemical composition of welding wires. The case of YCW12 wires was mainly composed of spatters generated by Type l and Type II, while most, spatters in YCW11 wires were generated by Type II and Type III.

• 한국화재조사학회학술대회
• /
• 한국화재조사학회 2011년도 제20회 추계학술대회
• /
• pp.91-119
• /
• 2010

자동차 수의 증가와 함께 자동차 화재 또한 꾸준한 증가 추세에 있다. 본 연구에서는 자동차 화재의 여러 요인들 중 자동차 출고 이후에 사용자에 의하여 변형된 부분, 즉 자동차 튜닝으로 인하여 화재가 발생할 가능성을 입증하고자 하였다. 실험 결과 전조등의 밝기를 향상시키기 위한 교체, 멀티시거잭 배선의 허용전류를 초과하여 전기장치를 사용하는 경우, 전선의 손상, 그리고 시중에서 튜닝용으로 구입하여 사용하는 전기배선의 취약성 등이 화재 가능성에 영향을 미치는 것으로 나타났다.