A kart is a vehicle without the suspension system and the differential gear. The kart frame as an elastic body plays the role of a spring. By the cornering of a kart, rolling, pitching and twisting motions are induced in the kart frame. Also the slip or noncontact of the wheel and a permanent deformation of the kart frame can be induced. In order to examine closely this phenomenon of the twisting deformation, measurement and analysis on torsion working stress with strain gage and tracking system are needed. According to the measurement result, while steady state driving in a curve in general the torsion working stress of the kart frame will be increased depending on the vehicle velocity, but the kart frame will be not permanent deformed. However, analysis of the torsion working stress in comparison with torsion fatigue limit shows that while unsteady state driving as clash with same drive condition the racing kart frame will be deformed more quickly as the leisure kart frame.

Abstract
 1. 서론
 2. 카트 프레임
  2.1 카트 프레임 비틀림 모델링
  2.2 카트 프레임재료의 기계적 특성과 응력분포
  2.3 응력-수명 선도와 하중효과에 의한 카트프레임 강의 비틀림 응력과 피로한도
 3. 측정
  3.1 측정장치 및 데이터 분석
  3.2 측정방법
 4. 측정결과 및 고찰
  4.1 측정 데이터 및 프레임 강의 비틀림 응력곡선
  4.2 프레임 강의 비틀림 응력 분석
 5. 결론
 참고문헌

• 안종성(경기대학교) | J. S. An
• 유충준(경기대학교) | C. J. You