• 제목/요약/키워드: joint

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T형 이음 접합에 의한 경량구조물용 접착이음강도의 평가 (Strength Evaluation of Adhesive Bonded Joint for Light Weight Structure by T-Peel Joint Test)

  • 이강용;공병석;우형표
    • 한국자동차공학회논문집
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    • 제6권4호
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    • pp.56-65
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    • 1998
  • The bonding strength evaluation of the light weight materials for an electrical vehicle has been performed through the T-peel joint test in which the design paramete- rs such as joint style, adherend type, adherend thickness, adhesive thickness, and adhesive type are considered. It is experimentally observed that the peel strength of joint increases with the increase of the adherend thickness. With the increase of the adhesive thickness, however, the peel strength of joint increases a little. Aluminum-FRP adherend combination shows such higher peel strength than that of Aluminum-Aluminum adherend combination. For the adhesive bonded joint, the results of FEM analysis agree with those of experiment. The adhesive bonded joint reinfored with a rivet gives higher peel strength than that of the joint without rivet.

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엄지손가락 관절 굽힘의 이상 (Abnormalities in Flexion of the Thumb Joint)

  • 신성윤;이민혜;신광성;이현창
    • 한국정보통신학회:학술대회논문집
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    • 한국정보통신학회 2018년도 추계학술대회
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    • pp.174-175
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    • 2018
  • 본 논문은 헬스케어의 한 분야로 엄지손가락에 대한 손허리손가락관절굽힘과 손가락뼈사이관절굽힘에 대하여 알아보도록 한다. 손허리손가락관절굽힘은 엄지 손허리 손가락 관절을 구부리는 것을 말하고 손가락뼈사이관절굽힘은 엄지손가락뼈사이 관절을 구부리는 것을 말한다. 관절을 구부릴 때 일정한 정해진 각도에 미달하거나 통증을 느끼면 이상이 발생한 것이다. 또한 엄지손가락 관절의 이상에 대한 예방법과 치료법도 제시하였다.

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Effect of Kinesiotaping and Joint Mobilization on The Metatarsophalangeal Joint Angle and Pain in Hallux Valgus Patients

  • Choi, Jung Hyun;Kim, Nyeon Jun;An, Ho Jung
    • 국제물리치료학회지
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    • 제8권2호
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    • pp.1152-1157
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    • 2017
  • The aim of this study was to observe the effects of kinesiotaping and joint mobilization on the metatarsophalangeal joint angle and pain in hallux valgus patients Twenty-one female hallux valgus patients in their 20s were divided into two groups, a Kinesiotaping group (KT, n=10) and another group with the addition of joint mobilization (KTJM, n=11). After undergoing 6 weeks of intervention, the change in the metatarsophalangeal joint and pain were measured. Metatarsophalangeal joint angle was significantly increased both the KT and the KTMJ group after intervention. In the change of pain, both the KT and KTJM groups on an individual basis also experienced a significant decrease in pain, though comparison between the two groups failed to represent a significant difference. These findings suggest that Kinesiotatping and joint mobilization increased the joint angle and reduced pain.

피로실험에 의한 콘크리트 포장체 경사가로줄눈부의 하중전달율에 관한 연구 (A Study on Load Transfer Efficiency of Skewed Transverse Joint of Concrete Pavement by the Fatigue Test)

  • 황승의;배주성
    • 한국구조물진단유지관리공학회 논문집
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    • 제5권3호
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    • pp.203-211
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    • 2001
  • This paper presents load transfer efficiency of skewed transverse joint of jointed concrete pavement with the fatigue model test. A 1/12 scale model was used to satisfy the geometry, loading, material similitude, which are variables to the skew angel of transverse joint. As the test results by fatigue load 700kgf applied, the deflection and stress of transverse joint were decreased as to increasing of skew angle of transverse joint. In addition, load transfer efficiency of transverse joint with skew angle is better than the load transfer efficiency of transverse joint without skew angle.

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Analysis of Lower Extremity Joint Moment and Power during Squat in Female Patients with Genu Varum

  • Jeong, Ji-Man;Lim, Bee-Oh
    • 한국운동역학회지
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    • 제26권4호
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    • pp.407-412
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    • 2016
  • Objective: The aim of this study was to analyze the net joint moment and joint power of the lower extremity during squat in female patients with genu varum. Method: Eight female patients with genu varum were asked to do regular squats, and their net joint moment and joint power were compared to those of another eight female participants with straight legs. Their video recordings and ground reaction force data were analyzed to be used as a theoretical evidence of squatting effectively for female patients with genu varum. Results: Squats had a higher impact on internal knee joint rotation and ankle joint flexion moments in the genu varum group than in the straight leg group due to their weak and short hip joint muscles. Conclusion: There is a need to develop a squat movement that is appropriate for women with genu varum in order to distribute overload efficiently among the hip, knee, and ankle joints and to strengthen the muscles in a balanced way.

인공고관절 생체재료 마멸평가를 위한 시뮬레이터 개발 (Development of Hip Joint Simulator to Evaluate The Wear of Biomaterials Used in Total Hip Joint Replacement)

  • 이권용;윤재웅;전승범;박성길
    • 한국윤활학회:학술대회논문집
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    • 한국윤활학회 2001년도 제33회 춘계학술대회 개최
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    • pp.265-270
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    • 2001
  • Hip joint simulator which Is an essential device for evaluating the wear of biomaterials (ultrahigh molecular weight polyethylene, Co-Cr alloy, alumina, etc.) used in total hip joint replacement was developed. This hip joint simulator mimics the joint motion and joint loading of human gait by adapting the 4 degree of freedom in kinematic motion (flexing/extension, adduction/abduction, Internal rotation/external rotation) and axial loading, Four stations are operated by 8 servo-motors and harmony drives. Joint leading was imposed by displacement control from a ball screw, LM guide, and spring system. Each kinematic link system operates separately or coupled modes. A heater and a thermocouple were installed for keeping the body temperature in each station.

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고유수용성 신경근 촉진법과 견갑골 움직임 (Proprioceptive Neuromuscular Facilitation and Scapular Movement)

  • 김재헌
    • PNF and Movement
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    • 제3권1호
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    • pp.47-53
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    • 2005
  • Purpose : To describes the important aspects of scapular movement and function used when applying PNF technique to the upper limb and scapular. Method : The scapular was a very important roles in the upper limb movement. This study summarizes the physiologic movement of scapular to the PNF upper extremity patterns or scapular patterns. Result : The shoulder joint has the most freedom of range of motion in the human body, composed of the glenohumeral joint, the subacromial joint, the acromioclavical joint, the sternoclavicular joint, the scapulothoracic joint, the costosternal joint, and the costovertebral joint. During upper limb movement, the scapular position change at the sternoclavicular joint and the acromioclavical joint. This concerted motion was characterized by scapulohumeral rhythm. In clinical situations, it is import to understand factors affect the scapulohumeral rhythm so that optimal evaluation and therapeutic intervention can be devised. Conclusions : The scapular movement depend on the proper and coordinated contraction of muscles. Physical therapists need to understand the normal scapular movement relationships of the scapulohumeral rhythm under different interventions for PNF techniques application.

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Experimental Study on Seismic Behavior of Roof Joint

  • Cui, Yao;Gao, Xiaoyu;Liu, Hongtao;Yamada, Satoshi
    • 국제강구조저널
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    • 제18권4호
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    • pp.1373-1383
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    • 2018
  • Experimental study was conducted to investigate the seismic behavior of roof joint. Eight full-scale specimens were tested considering the effects of axial force, joint height, hole shape of base plate and edge distance of concrete on the failure mode and resistance capacity of roof joint. With the increase of axial force, the hysteretic curves were fuller. The mechanical model of roof joint change from bending to shear. With the increase of joint height, the ultimate strength of roof joint decreased. If the hole shape of base plate changed from circle to loose, the slip behavior of roof joint appeared and the ultimate strength of roof joint decreased. The damage of edge concrete may occur if the edge distance of concrete was not big enough.

BEST PRACTICES FOR JOINT VENTURES: ISSUES AND CRITICAL SUCCESS FACTORS

  • Rizwan U. Farooqui;Syed M. Ahmed;Dilshad Umer
    • 국제학술발표논문집
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    • The 3th International Conference on Construction Engineering and Project Management
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    • pp.369-374
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    • 2009
  • Project-based joint ventures are often used in the construction industry to assemble an organization that meets a client's project needs and matches or exceeds the capacities of competitors. The joint venture / partnerships provides the means for a firm to quickly add resource, political, technical, or other required strengths that will increase project acquisition. This paper sets out to study the types of joint ventures, different issues or problems while having joint ventures and the critical factors that contribute to successful joint ventures. A questionnaire was designed and administered to survey the issues and present practices of joint ventures in the South Florida construction industry. Along with the questionnaire, personnel interviews were also conducted to get first hand knowledge about the subject matter. The results are presented in the paper. These results specifically identify the overall practice of joint ventures in South Florida as well as indicate the most significant factors leading to failure or success of these ventures.

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해양 구조물의 K-Joint 특성 연구 (Parametric Study of K-Joint Offshore Structure)

  • 조철희;박관규;임성우;김준영
    • 한국전산구조공학회논문집
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    • 제20권1호
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    • pp.51-56
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    • 2007
  • 해양구조물에서 많이 사용되는 K-Joint는 그 구조특성으로 인해 응력집중이 발생하며 최적 설계를 위한 가이드라인제시가 요구된다. 형상특성에 따른 응력집중 현상이 다르게 발생함으로 형상을 결정하는 각종 변수인 ${\alpha},\;{\beta},\;{\gamma},\;{\tau},\;{\theta}$의 변화에 따른 조인트의 응력변화를 분석하였다. 수치적인 패라메트릭 연구를 통해 응력 변화 특성을 제시하였고 주요 요소에 따른 최대 응력값도 나타내었고 수치해석 결과를 실험값과 비교하였다.