• 한국의류학회지
• /
• 제34권4호
• /
• pp.642-652
• /
• 2010

This study examines the inconveniences and problems of established safety-equipment by investigating the actual conditions for elderly people who use welfare services such as wheel chairs provided by care institutions. Suggestions will be made on how to improve the function and convenience of use to suit the needs of the elderly and how to create beautiful wheel chair safety-wear. Medical treatment helpers for the elderly were surveyed about the wearing conditions of wheel chair safety equipment. The present wheel chair safety equipment was shown to be aesthetically unpleasant; in addition, feelings of restriction and unpleasantness were noted (concerning the wearing of the equipment). In addition, there was no feeling of fixed stability. The wheel chair safety-wear that has been designed reflects the inconveniences and problems of current wheel chair safety equipment in material, design, and patterns along with the results of those surveys. Both objective and subjective tests compared the manufactured safety-wear with current equipment. According to the results, the new safety-wear is superior than existing ones.

• 한국정밀공학회:학술대회논문집
• /
• 한국정밀공학회 1997년도 춘계학술대회 논문집
• /
• pp.608-613
• /
• 1997

This study discusses the developmentof hydraulic rotary actuator design technology for industriol machinery and earthmoving equipment. The lubrication and wear analysis of sliding components of the machinery are very important parameters to sterngth the design technique. The analysis and were test are performed for the selected materials of the above mentioned coupled sliding members using the experimental results. One can selsct the better combination of sliding components.

• Corrosion Science and Technology
• /
• 제13권1호
• /
• pp.15-19
• /
• 2014

Recently, anti-fouling paints which does not include the poison components such as tin(Sn), copper(Cu) have been increasingly developed in order to inhibit the environmental contamination of the sea water. Moreover, the wear ratios of these anti-fouling paints are very important problem to prolong their life time in economical point of view. In this study, five types of anti-fouling paints as self polishing type were investigated on the relationship between their polarization characteristics and wear ratios. It was verified that there was apparently a good relationship between the wear ratio and polarization characteristics, for example, the wear ratio increased with increasing the impedance ratio, and increased or decreased with the corrosion potential shifting in the negative or positive direction respectively. In addition, the wear ratio decreased with decreasing the corrosion current density. Consequently, it is suggested that we can qualitatively expect the wear ratio by only measuring the polarization characteristics. Therefore, before the examination of the wear ratio was actually carried out in the field, the evaluation of polarization property in the laboratory may give a available reference data for their developments.

• Journal of Advanced Marine Engineering and Technology
• /
• 제23권1호
• /
• pp.79-87
• /
• 1999

The most part of the faculty drop a trouble and damage of machine equipment even if whatever cause they break out take place at local and trifling place and the factor dominating their trouble is due to wear debris occurred in the lubricated machine moving surface. This study has been car-ried out to identify morphology of wear debris on the lubricated machine moving system by means of computer image analysis. Namely the wear debris contained in lubricating oil extracted from movable machine equipment will be filtered through membrane filter(void diameter 0.45${\mu}m$) and will be analyzed with its data information such as 50% volume diameter aspect roundness and reflectivity. Morphological characteristic of wear debris is easily distinguished by four shape parameters it is necessary to divide small class of every 100 wear debris in total wear particles in order to distinguish morphological characteristic of wear debris more easily by computer image analysis. We are sure that operation condition diagnosis of the lubricated machine moving surfaces is possible by computer image analysis.

• 한국의류학회지
• /
• 제41권1호
• /
• pp.141-152
• /
• 2017

The lumbar disc is one of the first parts of the human body to age. Female discs start to age at twenty and completely age between fifty and sixty. The number of lumbar herniated intervertebral disc patients is increasing rapidly; however, studies on protective inner wear are insufficient. This study develops protective inner wear equipment for bodies. The following were the study methods and procedures. First, the protective design, pattern and making of the inner wear were based on the analysis of collected data. Second, one subject was selected, then human body parts were measured to create the inner protective pattern. The inner pattern was made by the basic size of the subject. The inner protective equipment was made for lumbar disc disease patients after a wearing test and after correcting the pattern. Third, inner protective equipment was thoroughly tested to verify the compatibility of lumbar pads. The following were the study results and observations. First, lumbar pads who had inner protection were easily worn and the design was very ladyish in contrast to other lumbar pads on the market. Second, the pattern was completed by referring to, Lee Hyoung Sook's, torso and her lumbar pad shape. The fabric was mesh (for good ventilation) and poly spandex (for elasticity). Third, lumbar inner protective equipment was verified through a subject assessment and a major assessment. This study showed high scores on appearance and functional satisfaction versus existing disc lumbar pads in the market. This study predicts that new waist protective inner wear can help the female patient's health and social life because it has great functionality and can maintain outer line patterns.

• 한국정보통신학회:학술대회논문집
• /
• 한국정보통신학회 2015년도 춘계학술대회
• /
• pp.346-349
• /
• 2015

일반적으로 타이어의 마모도나 비정상적인 마모를 알아보기 위해서는 운전자나 정비사가 직접 타이어를 육안으로 타이어의 마모도 및 타이어의 이상 여부를 확인하거나, 측정 게이지 장비를 이용한 방법을 이용한다. 이러한 방법은 개개인의 주관적인 판단이 들어가거나 시간적인 부담과 휠 얼라인먼트 장비를 사용하는 비용을 지불하게 되어 운전자가 받는 부담을 더욱 클 수밖에 없다. 그래서 본 논문에서는 이상마모와 타이어의 마모도를 체크 하고자 복수개의 레이저 센서를 이용하여 각 타이어마다 이상마모와 타이어의 마모도를 체크하고 타이어의 정보를 알기 위해 타이어의 옆면을 체크 하는 시스템을 개발하여 주관적인 판단을 극복하고 객관적이고 정확한 판단을 내릴 것이다.

• Advances in nano research
• /
• 제14권2호
• /
• pp.195-200
• /
• 2023

Safety in sports is important because if an athlete has an accident, he may not be able to lead an everyday life for the rest of his life. The safety of sports facilities is very effective in creating people's sports activities, with the benefits of staying away from physical injury, enjoying sports, and mental peace. Everyone has the right to participate in sports and recreation and to ensure that they want a safe environment. This study prepares a very good Nickel-Cobalt -Silicon carbide (Ni/Co-SiC) nanocomposite with convenient geometry on the leg press machine rod, employing the pulse electrodeposition technique to reduce the rod's wear and increase the durability of sports equipment and control sports damages. The results showed that the Ni/Co-SiC nanocomposite formed at 2 A/dm2 shows extraordinary microhardness. The wear speed for the Ni/Co-SiC nanocomposite created at 4 A/dm2 was 15 mg/min, showing superior wear resistance. Therefore, the Ni/Co-SiC nanocomposite can reduce sports equipment's wear and decrease sports injuries. Ni-Co/SiC nanocomposite layers with various scopes of silicon carbide nanoparticles via electrodeposition in a Ni-Co plating bath, including SiC nanoparticles to be co-deposited. The form and dimensions of Silicon carbide nanoparticles are watched and selected using Scanning Electron Microscopy (SEM).

• 연구논문집
• /
• 통권28호
• /
• pp.101-110
• /
• 1998

This study discusses the developement of hydraulic rotary actuator design technology for industrial machinery and earthmoving equipment. The lubrication and wear analysis of sliding components of the machinery are very important parameters to strength the design technique. The analysis and wear test are performed for the selected materials of the above mentioned coupled sliding members. The can be used to select the better combinations of sliding components.

• 한국재난정보학회 논문집
• /
• 제14권1호
• /
• pp.72-78
• /
• 2018

본 연구는 고위험군에 종사하는 근로자들을 대상으로 설문조사를 실시하여, 그들이 작업현장에서 느끼는 부적절한 장비의 착용이 안전사고 위험성 인식과 직무소진에 미치는 영향을 파악하고, 안전사고 위험성 인식의 매개효과를 파악하고자 하였다. 분석결과, 고위험군 종사자들이 느끼는 직무소진 중, 정서가 고갈되고, 인격화에 문제가 생기는 것은 위험을 방어하지 못하는 부적절한 장비를 착용하는 대서 비록 되며, 이로 인한 안전사고의 위험성 인식때문이라고 할 수 있었다. 따라서, 고위험군 종사자들이 위험한 작업현장에서 그들의 경력과 기술을 발휘하면서도 안전하게 작업을 할 수 있게 하기 위해서는 위험을 방어할 수 있는 적정한 장비를 착용할 수 있도록 아낌없는 지원을 해야 할 것이다.

• Tribology and Lubricants
• /
• 제15권3호
• /
• pp.265-271
• /
• 1999

Wherever there are rotating equipment and contact between surface, there is wear and the generation of wear particles. The particles contained in the lubricating oil carry detailed and important information about the condition monitoring of the machine. This information may be deduced from particle shape, composition, size distribution, and concentration. Therefore, This paper was undertaken to Ferrography system of wear debris generated from lubricated moving machine surface. The lubricating wear test was performed under different experimental conditions using the Falex wear test of Pin and V-Block type by Ti(C, N) coated. It was shown from the test results that wear particle concentration (WPC) and wear severity Index( $I_{S}$), size distribution in normal and abnormal wear have come out all the higher value by increases sliding friction time. Wear shape is observed on the Ferrogram it was discovered a thin leaf wear debris as well as ball and plate type wear particles. This kind of large wear shape have an important effect not only metals damage, but also seizure phenomenon.