About the JKSPE Browse Articles Editorial Committee For Reviewers For Authors
Search for Title:  Author:  Keyword:  Vol.  No. 
  
 
 
  Current Issue
 
Vol. 35, No. 7
July, 2018
 
 
  Indexed in
 
 
 
 
  Journal of the Korean Society for Precision Engineering  
 
Aims and Scope
Journal of the Korean Society for Precision Engineering (JKSPE) is devoted to publishing original research articles with high ethical standard on all aspects of precision…
Ethical Policy
Code of Ethics for Academic Activities of the Korean Society for Precision Engineering (KSPE) Enacted on October 9, 2008 Chapter 1: Overall Rules Article 1: Purpose…
Editor-in-Chief: Sun-Kyu Lee
Vice Editor-in-Chief: Bo Hyun Kim
JKSPE Editorial Board
ISSN 1225-9071(Print)
ISSN 2287-8769(Online)
TEL +82-2-393-0724  /  FAX +82-2-518-2937  /   paper@kspe.or.kr  /  http://www.kspe.or.kr
 
 
 
  Best Figures of the Month  
 
Vol. 35, No. 6, pp. 609-613
Title: Study on Finite Element Modeling Method for Cylindrical Composite Lattice Structures with Hexagonal Cell
Corresponding Author: Kwang Bok Shin
Abstract: In this paper, finite element modeling methods for cylindrical composite lattice structures were verified through natural frequency test. Finite element models for cylindrical composite lattice structure were developed using beam, shell and solid elements. Natural frequency test was measured using impact test method under free-boundary condition. The analysis result of the beam element model showed up to 23% errors because the beam element could not consider the degradation of mechanical properties of non-intersection parts of the composite lattice structures. On the other hand, the natural frequencies of finite element analysis for shell and solid element models showed good results with natural frequencies test. From the analysis of the experiment, finite element model for composite lattice structures should use shell or solid element which takes into consideration the intersection and non-intersection parts. …
   
Vol. 35, No. 6, pp. 635-639
Title: Effects of the Liquid Surface Tension on the Ejected Droplet Volume in a Pneumatic Printing System
Corresponding Author: Sangmin Lee
Abstract: This paper presents results for effects of the liquid surface tension on the ejected droplet volume using a pneumatic printing system. The low surface tension of the solution causes the liquid wetting around the nozzle, and then the wetted nozzle also inhibits stable formation of droplets. First, we confirmed the maximum inlet pressure (i.e., balanced with capillary force on the outlet channel) corresponding to varied surface tensions of the solutions, prepared by controlling the concentration of a surfactant. The ejected droplet volumes with the surfactant concentrations was varied within approximately 7% at each maximum inlet pressure, and the volume variation decreased to a fifth as compared with a high surface tension liquid. …
   
Vol. 35, No. 7, pp. 681-687
Title: A Study on the Vibration Reduction of Turbine Rotor through Advanced Flexible Packing Rings
Corresponding Author: Chul Kim
Abstract: Steam turbines of thermal power plants are installed in such a way that packing ring surrounds the entire turbine rotors in order to reduce the amount lost due to a leak of steam and to improve performance. However, the conventional packing ring cannot affect positively fluid velocity of the direction of steam, so it does not have the power to reduce vibration of the rotor. In this research, a study was conducted to reduce it by lowering the rotational speed of steam in the rotor. Anti-swirl teeth which changes rotational speed of steam into axial speed of it, designed in front of the conventional packing rings, and their numbers, twist angles. The characteristics of the rotor and the anti-swirl teeth were chosen as design factors to reduce vibration of the rotor. Through the finite element, the improved packing ring designed with the optimal anti-swirl teeth was developed. …
   
Vol. 35, No. 7, pp. 695-700
Title: Lightweight Design of the Stub Axle Using Topology Optimization
Corresponding Author: In Gwun Jang
Abstract: This study reviews the assumption that the lightweight design of commercial vehicles is significant from the aspect of the anticipated fuel consumption and environmental regulations that are consequently applicable to those vehicles. Generally speaking, it is noted that among the numerous trailer components, a stub axle, which is designed to independently operate as an integral part of trailer’s suspension, can play an important role in increasing the shipping capacity of a box trailer. For this reason, because each stub axle is comparatively a heavy unit in itself, and a total of six stub axles are mounted in a box trailer, the lightweight design of a stub-axle is noted as an essential factor to reduce the whole weight of a trailer. For a finite element analysis, an original CAD model is modified through removing a chamber, airbag, axle drum, bearing and pivot on a vehicle. In addition, the loading conditions are imposed considering three extreme driving conditions and the effects are studied when in the event of review of a fully loaded in a box trailer. A topology optimization is conducted to determine a lightweight design for minimizing compliance under these boundary conditions. …
   
 
Current Issue Archive
    
    
JKSPE Vol. 35, No. 7
Comparison of Direct and Indirect Measurement of Creep Uncertainty in the Calibration of Force Measuring Devices
Manrusces Enot1,2, Jin-seok Jang1, and Yon-Kyu Park1,2

힘측정기의 교정 시 크립 불확도의 직‧간접 측정 방법의 비교 연구
마르세스1,2, 장진석1, 박연규1,2

J. Korean Soc. Precis. Eng., Vol. 35,  No. 7  pp. 651-655, 2018.
http://doi.org/10.7736/KSPE.2018.35.7.651 
    Full text via DOI      PDF Links
 
Inspection of the Epoxy-Bushing in Switchgear Using Ultrasonic Immersion System
Yong Sang Cho1, Doo Song Gil1, Su Ji Han1, and Jin Hyuk Lee1

초음파 수침 시스템을 이용한 개폐기 에폭시 부싱 검사
조용상1, 길두송1, 한수지1, 이진혁1

J. Korean Soc. Precis. Eng., Vol. 35,  No. 7  pp. 657-661, 2018.
http://doi.org/10.7736/KSPE.2018.35.7.657 
    Full text via DOI      PDF Links
 
Development of Automatic System to Discharge Sludge in Oil Separator of Marine Engine
Chan Hoon Ahn1,2, Man Gi Kim3, and Jun Choi1

선박엔진용 Oil Separator의 Sludge 자동배출 시스템 구현
안찬훈1,2, 김만기3, 최 준1

J. Korean Soc. Precis. Eng., Vol. 35,  No. 7  pp. 663-668, 2018.
http://doi.org/10.7736/KSPE.2018.35.7.663 
    Full text via DOI      PDF Links
 
Development of Robot’s Vision Control Scheme Using the Data Moving Method for the Tracking of Moving Target
Jae Myung Kim1, Jae Kyung Son1, and Wan Shik Jang2

이동타겟 추적을 위한 데이터이동법을 이용한 로봇비젼 제어기법 개발
김재명1, 손재경1, 장완식2

J. Korean Soc. Precis. Eng., Vol. 35,  No. 7  pp. 669-679, 2018.
http://doi.org/10.7736/KSPE.2018.35.7.669 
    Full text via DOI      PDF Links
 
A Study on the Vibration Reduction of Turbine Rotor through Advanced Flexible Packing Rings
Hyeon Jong Kim1, Hyo Seo Kwak2, Han Saem Sung1, Chang Ryeol Lee3, and Chul Kim4

개선된 플렉시블 패킹 링을 통한 증기터빈 로터의 진동 저감에 관한 연구
김현종1, 곽효서2, 성한샘1, 이창렬3, 김 철4

J. Korean Soc. Precis. Eng., Vol. 35,  No. 7  pp. 681-687, 2018.
http://doi.org/10.7736/KSPE.2018.35.7.681 
    Full text via DOI      PDF Links
 
A Study on the Method for the Temperature Analysis of Side Wall for the Durability of Run-Flat Tires
Hyung Jin Kim1, Jin Hwan Lee1, Seong Rae Kim1, Ki Deug Sung1, and Won Byoung Bae2

런플랫 타이어의 내구 예측을 위한 사이드월 온도 해석 방법
김형진1, 이진환1, 김성래1, 성기득1, 배원병2

J. Korean Soc. Precis. Eng., Vol. 35,  No. 7  pp. 689-694, 2018.
http://doi.org/10.7736/KSPE.2018.35.7.689 
    Full text via DOI      PDF Links
 
Lightweight Design of the Stub Axle Using Topology Optimization
Jinsu Kim1, Hong Seong Roh2, Yeonjoo Min2, Sung-Ho Hur2, and In Gwun Jang1

위상최적설계를 이용한 스터브액슬의 경량화 설계
김진수1, 노홍승2, 민연주2, 허성호2, 장인권1

J. Korean Soc. Precis. Eng., Vol. 35,  No. 7  pp. 695-700, 2018.
http://doi.org/10.7736/KSPE.2018.35.7.695 
    Full text via DOI      PDF Links
 
Degradation Progression of Polyurethane Hydraulic Reciprocating Seal
Junho Bae1 and Koo-Hyun Chung1

폴리우레탄 유압 왕복 씰의 파손 진전 특성
배준호1, 정구현1

J. Korean Soc. Precis. Eng., Vol. 35,  No. 7  pp. 701-706, 2018.
http://doi.org/10.7736/KSPE.2018.35.7.701 
    Full text via DOI      PDF Links
 
A Study on the Effect of Restriking Process for the Stampings of HSS Sheet
Rongzhen Zheng1 and Hyun Bo Shim2

리스트라이킹이 고강도강 스탬핑에서의 형상정밀도에 미치는 영향에 관한 연구
R.Z. Zheng1, 심현보2

J. Korean Soc. Precis. Eng., Vol. 35,  No. 7  pp. 707-714, 2018.
http://doi.org/10.7736/KSPE.2018.35.7.707 
    Full text via DOI      PDF Links
 
Design of Tip Clearance in the D.D.I. Process to Manufacture Pressure Vessel
Hyo Seo Kwak1, Gun Young Park2, and Chul Kim3

 압력용기 제조를 위한 D.D.I 공정의 팁 클리어런스 설계
곽효서1, 박건영2, 김 철3

J. Korean Soc. Precis. Eng., Vol. 35,  No. 7  pp. 715-720, 2018.
http://doi.org/10.7736/KSPE.2018.35.7.715 
    Full text via DOI      PDF Links
 
Analysis in the Change of Paraspinal Muscle Activities and Adjacent Disc Degeneration according to the Segmental Fusion
Hae Won Choi1 and Young Eun Kim1

척추 운동 분절의 유합에 따른 주변 근육력의 변화 및 인접 분절 추간판의 추가적 변성에 대한 해석
최혜원1, 김영은1

J. Korean Soc. Precis. Eng., Vol. 35,  No. 7  pp. 721-727, 2018.
http://doi.org/10.7736/KSPE.2018.35.7.721 
    Full text via DOI      PDF Links
 
Shaping of Micro Scale Features on Metallic Surfaces through the High-Speed Impact of Laser Accelerated Flyers
Dae Cheol Choi1 and Hong Seok Kim2

레이저 가속 플라이어의 고속 충돌을 이용한 금속표면의 마이크로 형상 가공
최대철1, 김홍석2

J. Korean Soc. Precis. Eng., Vol. 35,  No. 7  pp. 729-734, 2018.
http://doi.org/10.7736/KSPE.2018.35.7.729 
    Full text via DOI      PDF Links
 
 
서울 중구 중림로 50-1, SKY1004빌딩 12층, 04508 / 사업자등록번호 211-82-12117 / 회장 홍성욱
SKY 1004 Bldg. 12F, 50-1 Jungnim-ro, Jung-gu, Seoul, 04508, Republic of Korea / License No. 211-82-12117 / President Seong-Wook Hong
TEL +82-2-393-0724 / FAX +82-2-518-2937 / paper@kspe.or.kr / http://www.kspe.or.kr
Technical Support TEL: +82-2-422-5747 / info@the-kin.kr / Copyright ⓒ 2001 by KSPE All right reserved. [ Admin ]