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확산접합기술을 통한 자동차 인테리어부품 생산성 향상 고찰
양희승(Heeseung Yang),이호재(Hojea Lee),유혜승(Hyeseung Yoo) 한국자동차공학회 2017 한국자동차공학회 학술대회 및 전시회 Vol.2017 No.11
Now a day, the transition of automobile industry’s trend has influenced to the general automobile manufacturing’s competition factor. The emerging markets are already archived the half portion of the automobile market which cause the price become more important rather than quality or technical function. Furthermore, various approaches for lightening the weight of plastic injection product are applied according to the electric automobile and autonomous vehicle industry’s paradigm. So far, there are lots of studies on improving plastic injection technique and reducing time from the global companies and part suppliers. This paper presents the new method of improving the productivity and also decreases the cycle time and its quality.
음향산란이론모델을 이용한 살오징어(Todarodes pacifica)의 음향후방산란강도 측정
양희승(HeeSeung YANG),김민수(MinSoo KIM),오우석(WooSeok OH),이경훈(KyoungHoon LEE) 전남대학교 어업기술연구소 2021 어업기술연구소보고지 Vol.14 No.1
Recently, Japenese common squid, an important fisheries resource, has been decreased in the coastal waters of Korea. The purpose of this study is to estimate the TS of Japanese common squid and to use it as basic data to figure out the exact amount of resources of Japanese common squid. In order to estimate the TS, the total length and mantle length of 26 common squids were measured and photographed. The samples photographed were digitized and applied to the DWBA theoretical model. In the shortest mantle length No. 10 sample, the range of acoustic backscattering target strength for each frequency was measured –101.4 dB∼–55.9 dB at 38 kHz, –91.9 dB∼–57.1 dB at 70 kHz, –99.8 dB∼–56.2 dB at 120 kHz. The acoustic scattering strength range of No. 21 sample with the longest mantle length was measured –98.44 dB∼–55.3 dB at 38 kHz, –84.9 dB∼–53.8 dB at 70 kHz, and –89.5 dB ∼–51.5 dB at 120 kHz. The TS regression equations for common squid at each frequency was as follows; 38kHzMax = 20log10(ML) - 71.5, 38 kHzAvg = 20log10(ML) – 81.5, 70kHzMax = 210log10(ML) – 76.9, 70kHzAvg. 20log10(ML) - 82.8, 120kHzMax = 20log10(ML) – 75.6, 120kHzAvg = 20log10(ML) – 83.0
센서기술을 이용한 금형이관 프로세스 구축 및 사출품질 표준DB화 기술
양희승(Heeseung Yang),최재준(Jaejun Choi) 한국자동차공학회 2019 한국자동차공학회 부문종합 학술대회 Vol.2019 No.5
Recently, the Fourth Industrial Revolution is underway in all industries, among which Smart Factory plays an important role. According to these trends, the importance of securing standardized data and indicators that are the basis of process automation and data-based processes is emerging. In particular, the injection molding fields are still dependent on the know-how, so it is necessary to secure data-based indicators. In this study, the quality was matched with the pressure profile by using the in-mold sensor and data-based quality improvement methodology was established. In addition, the standardization of injection conditions for molds which are transferred to mass production centers to minimizing unnecessary loss contributing stabilization of early quality of product.
점도 보정을 통한 사출성형CAE 신뢰성 향상에 관한 연구
양희승(Heeseung Yang),조현권(Hyunkwon Jo),박현민(Hyunmin Park),나형현(Hyunghyun Na),박은정(Eunjung Park) 한국자동차공학회 2011 한국자동차공학회 학술대회 및 전시회 Vol.2011 No.11
Recently a quality improvement for car parts is needed in the automotive industry to correspond with the discerning customer’s demands. Especially domestic automotive suppliers are trying to improve the visual quality of car parts because Automotive Interior component made of the plastic is sensitive to visual quality. The plastic injection molding CAE is effective for quality improvement and cost-reduction of mold. So the study on the Reliability Enhancement for CAE is being done. The material properties are a major factor in injection molding CAE and the viscosity is very important factor of them to be considered . But it is realistically impossible to measure viscosity of all material that continually being developed. This paper is purposed to describes the methodology of reliability enhancement for CAE through modification of viscosity.