• 한국정밀공학회지
• /
• 제20권1호
• /
• pp.159-171
• /
• 2003

In this paper, same parts of a domestic automobiles and foreign automobiles are disassembled fur the evaluation of disassemblability, especially door trim and bumper. Influencing factors of disassembly are determined by the classification of bottleneck process in disassembly process. On the bases of disassembly sequence and structure of parts and subassembly, disassemblability is classified into aye categories. The influencing factors, which are related with the five categories are determined. By these relations, the checklist for disassembly evaluation is draw up and score tables of checked factors are established. For the establishing the disassembly score tables, the weighting values of each five categories are calculated by the disassembly test of automobiles and then, the weighting values of each influencing factors of five categories are calculated by the method of AHP (Analytic Hierarchy Process). And the last, the weighting values are modified and recalculated from the disassembly test. Using these weighting values, the score of influencing factors are determined and then, the score tables are established based on the score of influencing factors.

• 한국전기전자재료학회:학술대회논문집
• /
• 한국전기전자재료학회 1995년도 추계학술대회 논문집
• /
• pp.336-339
• /
• 1995

There has been considerable interest in electrochromic devices because of its potential application in automobiles including mirrors and windows. The electrochromic(EC) mirror can automatically control the amount of glare produced by headlights or other light source on either inside or outside mirrors. Therefore, the EC mirror can be a better alternative to todays day-night mirrors for automobiles. In this paper we have fabricated all solid state EC mirrors with glass-ITO / a-WO$_3$/ polymer electrolyte / a-V$_2$O$\sub$5/ / ITO-glass / Al structure and investigated their spectral reflectance as a function of applied voltage.

• 한국철도학회:학술대회논문집
• /
• 한국철도학회 2004년도 춘계학술대회 논문집
• /
• pp.375-379
• /
• 2004

The purpose of this study is to analyze the evolution of mobility after the commercial opening of french TGV through an examination on the precedent studies. The result of this study is as follows: Firstly, the TGV is competitive against the airplanes and automobiles within the 2 or 3 hours' service area, especially in the business trip markets. But in the recreational trips over this service area, 3 or 4 hours, the TGV remains as an important mode of transportation. Secondly, in a range within approximately 200 km, 1 hour by TGV, the french high speed train is not competitive against the automobiles by the lack of flexibility and commodity which are normally providing by the automobiles. This study shows the importance of permanent monitoring system on the KTX travellers' behavior to strengthen the market share of KTX.

• 한국공작기계학회논문집
• /
• 제17권1호
• /
• pp.113-119
• /
• 2008

The purpose of the present paper is to investigate the optimal shape of the brake tube-end and flare nut for automobiles using the $DEFORM^{TM}-3D$, finite element code. A flare nut is a small and important part used to join a brake tube-end in automobiles. In this instance, we studied the optimal forging processes for the tube-end and flare nut. Finite element analysis has been carried out to predict an optimal shape of the tube-end and flare nut. Also the simulation results were reflected to the forging processes design for the tube-end and flare nut. The shape of the tube-end and flare nut is in agreement with the finite element simulation and the test results.

• 한국자동차공학회논문집
• /
• 제4권3호
• /
• pp.61-72
• /
• 1996

In this paper, the driver seat comfort of eight automobiles was studied. The joint angles and anthropometric data of eleven subjects sitting on the seating buck were investigated using the instrument devices such as scale, goniometer, vernier calipers, protractor, Martin set. The joint angles of the most comfort posture were found by experiment and compared with previous studies. The anthropometric data of Korean(1992 year surveys) and American(1970∼1974 year) were applied to evaluate the driver seat layout of Korean automobile. The joint angles of the most comfort posture for eleven subjects were obtained with experimental results. The joint angles were agreed with reference angles. The driver seat layout was not suited to seat length and acceleratorseatpan forward distance in 5 percentiles female, pedal separation and seatpan-roof height in 95 percentiles male. Korean automobiles were not suited to seatpan length and steering wheelseatpan clearance, floor-roof height for American 95 percentiles male. The driver anthropometric dimensions were more suitable to middle size than small size automobiles.

• 한국자동차공학회논문집
• /
• 제10권6호
• /
• pp.117-124
• /
• 2002

For the correct estimation of air pollutant emission from automobiles which is the largest contributor of metropolitan area air pollution, the total pollutant emission from automobiles should be estimated accurately. Nationwide emissions from automobiles, such as CO, HC and NOx, are calculated by using emission factor and total VMT(vehicle miles traveled). The emission factors were derived from the emissions data on chassis dynamometer with test modes which represent the real driving patterns. In the present study, test modes to derive the emission factors for light duty vehicles are developed by using the real driving pattern data for the urban, suburban and express way.

• 전자통신동향분석
• /
• 제33권5호
• /
• pp.76-85
• /
• 2018

In recent years, automobiles have evolved from simple transportation to convergence devices, and have combined the Internet of things, high-speed communications, and artificial intelligence technologies to provide people with social and cultural benefits. To provide services such as a smart traffic analysis, autonomous driving, and unmanned driving, automobiles applying these technologies are required to perform various types of sensing and image analyses for vehicle recognition and distance measurements. addition, there has been a rapid increase in the need to introduce an automotive Ethernet, that can provide a wide bandwidth to support. such technologies. In this article, we survey the latest trends in automotive Ethernet based automobiles and their security threats, and analyze the status and prospects of security technologies applied to cope with them.

• 세라미스트
• /
• 제9권6호
• /
• pp.7-11
• /
• 2006

The status of structural ceramics in Japan is presented. Use of ceramics for structural components had been limited due to their brittleness, and the successful application was wear resistant parts such as thread guides and ceramic cutting tools up to around 1980. Since then, considerable work has been done for applying ceramics to mechanical parts, and automotive components made of silicon nitride were developed and commercialized in 1980s. Unfortunately, the application of silicon nitride to automotive engines is not so popular in these days. Instead, a variety of structural ceramics such as alumina, silicon carbide and zirconia have recently extended the market, and the expanded application includes vacuum process parts for manufacturing semiconductor and liquid crystal devices, refractory tubes for casting aluminum alloy, and dies for optical lens forming. In addition, cordierite honeycombs and diesel particulate filters are widely used in automobiles. In the present review, the recent application of structural ceramics to automobiles and industries in Japan is summarized.

• 디자인학연구
• /
• 제19권5호
• /
• pp.55-64
• /
• 2006

1980년대 중반이후 디지털 시스템이 자동차 디자인에 도입되면서 기존의 수작업을 통한 디자인 전개와 달리 개발기간을 단축시키는 디지털 프로세스로 급속하게 발전되고 있다. 이는 자동차 수출지역 확대에 따른 글로벌 디자인의 환경변화를 반영한 것이기도 하지만 고품질 다품종 자동차를 개발해야하는 당면 과제를 시간과 경제적인 면에서 효율적으로 활용하고자 함에 있다. 따라서 세계 각 자동차 제조사는 VR(virtual reality)스튜디오의 규모를 확대하여 자동차 실물 크기의 시각화 시스템을 구축하고, 각 지역별 디자인 스튜디오간의 동시간대 품평이 가능한 협업 체제에 주력하고 있다. 질적으로 향상된 품평은 기존의 디자인 검토와는 다른 실제 자동차가 출고되어 보여 지는 효과로 품평함으로써 자동차가 어떻게 보여 지는가를 이해하는 합리적 방법으로 평가받고 있으며, 어드밴스 제품이나 컨셉트카와 같이 빠른 결과를 확인하는 경우 효과적이다. 이외 대표적 장점은 개발기간 단축, 비용 절감, 단순 작업으로부터의 해방, 단기간의 다양한 디자인 제시, 컨셉트의 사실적 시각화 등이다. 자동차와 같이 제품의 크기가 큰 경우는 일반 디지털 하드웨어 시스템과 달리 파워-월을 통하여 실차 크기의 렌더링을 고해상도로 투사하며, 가상현실 공간인 케이브에서 디자인을 검토하기에 디지털 인프라 구축이라는 물리적 기간이 오랜 동안 소요되었다. 향후도 인프라 구축은 시스템 보완과 성능 향상의 지속적인 개선으로 결론을 정의 할 수는 없지만 디지털 디자인의 장점을 활용하고 단점을 보완하는 도약의 시기임은 분명하다. 따라서 디지털 강화요소를 기반으로 하는 디지털 디자인의 중요성을 인식하고 미래 자동차 개발에 효과적으로 적용될 수 있는 디지털의 체계적 활용을 연구하고자 한다.

• 산경연구논집
• /
• 제10권6호
• /
• pp.29-37
• /
• 2019

Purpose - This study intends to analyze Chinese consumers' purchase intention of Korean automobile. The aims of this study investigated to find out how product attributes and brand image affect the consumer's purchase intention of Korean automobiles in China. We consider the product attributes, brand image as evaluation criteria, also recognized as objectives for purchase intention. This study aims to analyze the positive effects on Chinese consumers' purchase intention with the variables by using the research model. Research design, data, and methodology - Based on theory of Purchase Intention, the concept of purchase intention was assessed by two factors: a) product attributes, and b) brand image to test the proposed hypotheses. The survey was conducted for 30 days, from October 17 to November 16 in 2018. With IBM SPSS Statistics 23.0 and IBM SPSS AMOS 23.0, factor analysis and regression, Cronbach's alpha and correlation were tested. 300 samples were used for this analysis. Results - As a main result, product attributes and brand image exerted significant effects on consumer's purchase intention. Thus,

and

were supported. The results showed that the product attributes, brand image had positive effects on purchase intention. The findings of this thesis are as follows: Firstly, automobiles' quality factors were divided into two categories like product properties (price, performance, design, economy, and safety), and brand image (awareness, favorability, reliability, and familiarity). Second, it showed that product properties and brand image had positive impacts on purchase intention of consumer. Conclusions - The impact of product attributes and brand image on consumer perceived value of Korean automobiles in China can be seen as a universal psychology of consumers who trust automobile products such as high quality, technology, ets. The results offer some insights into the extended model and have important managerial implications for Korean automobile enterprise. As the findings of this thesis show, all strategic orientations have significant and positive effects on the ability of innovation. At the same time, automobile company must pay attention to quality. As the relationship between the automobiles' performance and brand image were positive and significant, automobile companies should have comprehensive strategic orientations focused on strengthening these factors.