• 한국중재학회지:중재연구
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• 제31권4호
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• pp.99-117
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• 2021

In this study, the effect of reducing and increasing factors in relationship conflict on the relationship exit between auto parts suppliers and buyers was analyzed based on transaction cost theory and relational exchange theory. As a result of the hypothesis test, Hypothesis 1, which states that relationship commitment will hurt relationship exit, and Hypothesis 3 that replacement will harm relationship exit were supported. In addition, Hypothesis 2 which states that transaction-specific investment will positively affect relationship exit was not supported. The theoretical and practical implications of this study are as follows. This study has identified the antecedents of relationship exit by comprehensively applying the transaction cost theory and relational exchange theory. In addition, this study can identify what a company should manage specifically to lower conflict and relationship exit by identifying the antecedents of relationship exit. The limitations of this study and the directions for future studies are as follows. First, not all of the antecedents of relationship exits between auto parts suppliers and buyers have been extensively investigated in the viewpoint of the transaction cost theory and relational exchange theory. In the future, it is necessary to identify additional factors. Second, the study was conducted only from the supplier's viewpoint. In future studies, it is expected that more accurate research results can be obtained by simultaneously examining the supplier's point of view and the buyer's point of view.

• 한국해양공학회지
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• 제12권1호
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• pp.10-22
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• 1998

In the present work the elastic-plastic FE formulations using dynamic explicit time integration schemes are used for numerical analysis of a large auto-body panel stamping processes. For analyses of more complex cases with larger and more refined meshes, the explicit method is more time effective than implicit method, and has no convergency problem and has the robust nature of contact and friction algorithms while implicit method is widely used because of excellent accuracy and reliability. The elastic-plastic scheme is more reliable and rigorous while the rigid-plastic scheme require small computation time. In finite element simulation of auto-body panel stamping processes, the roobustness and stability of computation are important requirements since the computation time and convergency become major points of consideration besides the solution accuracy due to the complexity of geometry conditions. The performnce of the dynamic explicit algorithms are investigated by comparing the simulation results of formaing of complicate shaped autobody parts, such as a fuel tank and a rear hinge, with the experimental results. It has been shown that the proposed dynamic explicit elastic-plastic finite element method enables an effective computation for complicated auto-body panel stamping processes.

• 제어로봇시스템학회논문지
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• 제17권8호
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• pp.824-832
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• 2011

An essential consideration to differentiate prosthetic hand from robot hand is its convenience and usefulness rather than high resolution or multi-function of the robot hand. Therefore, this study proposes a myoelectric hand with a 2 DOF auto wrist module which has 6 essential functions of the human hand such as open, grasp, pronation, supination, extension, flexion, which improves the convenience of the daily life. It consists of the 3 main parts, the myoelectric sensor for input signal without additional attachment to operate the prosthetic hand, hand mechanism with high-torqued auto-transmission mechanism and self-locking module which guarantee the safety under the abrupt emergency and minimum power consumption, and dual threshold based controller to make easy for adopting the multi-DOF myoelectric hand. We prove the validity of the proposed system with experimental results.

• 한국자동차공학회논문집
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• 제14권2호
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• pp.23-31
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• 2006

Tolerance analysis of auto body requires the consideration of its compliance because of potentially significant deformation during the spot-weld assembly process. In this paper, a relatively recent method for such analyses is briefly introduced as one can find in the literature. In this method, it is important to take into account of the covariance between the sources of variation as they are closely located, which is the case in most auto body assembly. However, it is often impossible to know such covariance, for example, when a new car is being developed. Therefore, a mechanics-based method is proposed in this paper to estimate the covariance among the sources of variation by finite element analyses and simple statistical computations. The proposed method is illustrated by applying it to a three-dimensional model of real front wheel housing.

• 무역학회지
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• 제43권1호
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• pp.109-130
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• 2018

원산지결정기준 중 하나인 누적기준은 원산지결정기준을 완화 할 수 있는 방안으로 특정 조건들을 충족했을 때 비원산지재료도 원산지재료로 인정해주는 규정이다. 한-캐나다 FTA에서는 자동차 품목의 경우 기존의 일반적인 누적기준이 아닌 교차누적기준을 적용하였다. 이는 원산지결정기준의 확장과 편리함을 위한 것으로 제3국의 원재료나 중간재에도 원산지자격을 부여한다. 본 논문에서는 한-캐나다 FTA 발효 이전과 이후 교차누적의 대상 품목인 84, 85, 87, 94류의 대미자동차 부품 수입액의 변화의 여부를 실증분석하고 교차누적의 실효성을 살펴보았다. 분석대상은 각 류에서 자동차 부품으로 지정된 품목만 선택하여 분석하였는데 분석대상 품목 35개 품목 중 21개 품목에서 유의한 변화가 나타났다. 2015년 1월 기준으로 수입액이 단기적으로 큰 폭으로 증가하였거나, 추세적 증가율이 전보다 상승한 것으로 나타났다. 이러한 결과는 교차누적의 도입으로 우리나라 자동차 수출기업들이 한-캐나다 FTA의 교차누적을 활용하고 있음을 반증하는 것이라고 할 수 있다. 또한 수출확대와 시장확보를 위해 FTA 체결 시 교차누적의 도입을 적극적으로 검토할 필요성이 있다.

• Journal of information and communication convergence engineering
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• 제9권6호
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• pp.747-752
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• 2011

The position detection of overlapping area in the interframe for image stitching using auto and cross correlation function (ACCF) and compounding one image with the stitching algorithm is presented in this paper. ACCF is used by autocorrelation to the featured area to extract the filter mask in the reference (previous) image and the comparing (current) image is used by crosscorrelation. The stitching is detected by the position of high correlation, and aligns and stitches the image in shifting the current image based on the moving vector. The ACCF technique results in a few computations and simplicity because the filter mask is given by the featuring block, and the position is enabled to detect a bit movement. Input image captured from CMOS is used to be compared with the performance between the ACCF and the window correlation. The results of ACCF show that there is no seam and distortion at the joint parts in the stitched image, and the detection performance of the moving vector is improved to 12% in comparison with the window correlation method.

• 자동차안전학회지
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• 제4권2호
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• pp.17-21
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• 2012

The periodic technical vehicle inspection is to prevent the accident through the finding and fixing the defects of the vehicle. The periodic technical vehicle inspection in Korea was studied for assessing the adequacy of the inspection frequency. The inspection frequencies of many countries including EU, USA and Japan were compared. The average mileages by the vehicle usage and type were represented. The warranty period and recommended replacement period of parts of the domestic auto makers was studied. Currently, the inspection frequency for the periodic technical vehicle inspection in Korea is appropriate. The pass-fail rate and the cost-benefit analysis for the periodic technical inspection in Korea will be needed in the decision making process for the inspection frequency.

• 한국소성가공학회:학술대회논문집
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• 한국소성가공학회 2001년도 추계학술대회 논문집
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• pp.174-177
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• 2001

The automated computer-aided drafting technique is attempted for drawing process pictures of axisymmetric solid forgings which are mainly used in automobile industry. For this study basic concepts to draw the shape of an element are described and applied to the 2-dimensional and 3-dimensional modeling of forged parts. 2-dimensional display of process pictures is developed by using AutoLISP language in AutoCAD software of a drafting technique and 3-dimensional view of process pictures is based on the UG/open API and UG/open GRIP languages of Unigraphics software. Testing the developed program to forging of bolts and ballstuds, it was shown to give good results to be applicable in forging industry.

• 대한기계학회논문집
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• 제12권2호
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• pp.200-205
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• 1988

본 연구는 와이어 컷 방전가공을 위한 자동프로그래밍 시스템 오토 컷 (AUTO-CUT)의 개발에 관한 것으로 저자가 수행했던 연구를 확장한 것이다.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2004년도 추계학술대회 논문집
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• pp.1410-1413
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• 2004

Finite element method is very effective method to simulate the forming processes with good prediction of the deformation behaviour. For the finite element modeling of sheet mental forming the accurate tool model is required. Due to the geometrical complexity of real-size part stamping tools it is hard to make FE model for real-size auto-body stamping parts. In this paper, it was focussed on the drawability factors on auto-body panel stamping by AUTOFORM with using tool planning alloy to reduce law price as well as high precision from Design Optimization of die. According to this study, the results of simulation will give engineers good information to access the Design Optimization of die.