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논문 2,044건

fatigue life of the test specimens had load of 12 ton and loading frequency of 2.5 Hz, until breakage occurred. Test specimens with 60 and 80 % fatigue damage were prepared. For the mixing frequency generation, the optimal frequency combination was applied. Mixed ultrasonic waves with a frequency di
  • 페이지 6페이지
  • 가격 6,000원
  • 발행일 2019.01.17
  • 파일종류 아크로벳(pdf)
  • 발행기관 한국비파괴검사학회
  • 저자 이재선, 주파, 조윤호, 석창성
Ultrasonic method using SH(shear horizontal) wave has been developed to determine the surface damage in fatigued material. Fatigue damages based on propagation energy were analyzed by multi-regression analysis in interrupted fatigue test specimen including CrMoV and 12Cr alloy steel. From the test r
  • 페이지 7페이지
  • 가격 6,000원
  • 발행일 2019.03.01
  • 파일종류 아크로벳(pdf)
  • 발행기관 한국정밀공학회
  • 저자 강용호, 정용근, 송정일
fatigue failure due to repeated ice loads is also important. ISO 19906 specifies the assessment of the fatigue limit for a polar offshore structures. In addition, Lloyd’s Register refers to fatigue damage based on ShipRight FDA ICE. In ShipRight FDA ICE, the fatigue damage indices due to wave and ic
  • 페이지 8페이지
  • 가격 6,000원
  • 발행일 2019.03.01
  • 파일종류 아크로벳(pdf)
  • 발행기관 한국해양공학회
  • 저자 안우성, 이탁기, 황미란
damage by using acoustic nonlinearity of surface wave. In this study, the experimental system was constructed to measure the acoustic nonlinear parameter of surface wave in an Aluminum 6061 T6 specimen of which surface was damaged by the three point bending fatigue test, and magnitudes of nonlinear
  • 페이지 6페이지
  • 가격 6,000원
  • 발행일 2019.03.01
  • 파일종류 아크로벳(pdf)
  • 발행기관 한국비파괴검사학회
  • 저자 이재익, 이태훈, 장경영
fatigue damages, is developed from the subsurface crack near the rail running face and grows perpendicular to the rail surface. Therefore, it is necessary to investigate systematically the growth behavior of transverse crack for rail steel under mixed mode. In this study, the fatigue crack growth be
  • 페이지 6페이지
  • 가격 6,000원
  • 발행일 2019.03.01
  • 파일종류 아크로벳(pdf)
  • 발행기관 한국철도학회
  • 저자 Chul-Su Kim, Kwang-Woo Chung
fatigue loading lives of ‘SAE bracket’, ‘SAE transmission’ and ‘Sine Wave’. The damage at loading life of ‘SAE transmission’ is the least among 3 types. The frequency of damage in case of ‘Sine Wave’ is 0.7 with the least among 3 fatigue loading life types but this case brings the most possible dam
  • 페이지 7페이지
  • 가격 6,000원
  • 발행일 2019.03.21
  • 파일종류 아크로벳(pdf)
  • 발행기관 한국생산제조학회
  • 저자 조재웅, 한문식
wave and wind spectra were considered, and the fatigue damage to each mooring line was estimated. The rain flow fatigue damage for the time process of the mooring tension response was compared with the results estimated by all the fatigue damage prediction models. The results showed that both Benasc
  • 페이지 7페이지
  • 가격 6,000원
  • 발행일 2019.03.01
  • 파일종류 아크로벳(pdf)
  • 발행기관 한국해양공학회
  • 저자 박준범, 김국현, 김경수, 고대은
waves, and high-frequency response due to vortex induced-vibration. In this study, fatigue damage models were applied to predict the fatigue damages in a well-separated tri-modal spectrum, and the resultant fatigue damages of each model were compared with the most reasonable fatigue damage calculate
  • 페이지 8페이지
  • 가격 6,000원
  • 발행일 2019.03.01
  • 파일종류 아크로벳(pdf)
  • 발행기관 한국해양공학회
  • 저자 박준범, 정세민
mixed model and estimated the payment amount by the Bayesian method assuming the Weibull distribution. As a result, the average WTP for adaptation policy to prevent the health damage caused by cold waves was 8,492 won per household per year and the median price was 363 won per household. There was a
  • 페이지 29페이지
  • 가격 6,400원
  • 발행일 2017.11.25
  • 파일종류 아크로벳(pdf)
  • 발행기관 한국보건사회연구원
  • 저자 신호성 ( Shin Hosung ) , 이수형 ( Lee Suehyung )
fatigue accumulation in a specimen. The latter was a plate-shaped specimen and was used to confirm the change in the nonlinear parameter at the position where the fatigue stress was concentrated. The measured nonlinear parameter showed a strong correlation to the damage level in both fatigue tests.
  • 페이지 8페이지
  • 가격 6,000원
  • 발행일 2019.03.01
  • 파일종류 아크로벳(pdf)
  • 발행기관 대한기계학회
  • 저자 최익황, 백승현, 이태훈, 장경영
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