http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
나승우(Seung-Woo Na),임광희(kwang-Hee Im),김정호(jung-Ho Kim),정종안(Jong-An Jung),양인영(In-Young Yang) 한국자동차공학회 2002 한국자동차공학회 Symposium Vol.2002 No.11
This paper shows shear wave behavior of CFRP composite laminates as a polar grid form to evaluate vibration pattern of ultrasonic transducers. witch gives measured modelling fundamental contents of nondestructive evaluation. Polarized direction can be obtained by using a c-scanner and sensitivity of transducers is founded when using through-transmission method of two transducers. And modelling of vector decomposition is presented based on ply-to-ply method to apply prebronze nondestructive evaluation of CFRP laminate lay up. This modelling decomposes the transmission of a linearly polarized wave into orthogonal components through each ply of a laminates. It is found that a high probability shows between the model and expeditation dave loped in characterizing layups of CFRP composite laminates.
Bias 스프링을 이용한 형상기억합금 액츄에이터의 설계 방법
이승기,나승우 ( Seung Ki Lee,Seung Woo Na ) 한국센서학회 1998 센서학회지 Vol.7 No.6
The actuator using shape memory alloy spring with bias spring can act as a bidirectional actuator due to the restoring force of the bias spring. In the design of shape memory actuator with bias spring, the required design specifications are the generated force and the necessary stroke. To fulfill these requirements, shape memory alloy spring and bias spring should be designed carefully considering the specified application. In this paper, the novel design method for shape memory alloy actuator with bias spring, which does not require any assumptions from experience, has been proposed and verified by the test of fabricated shape memory alloy actuator. The experimental results show good agreements with calculated values, which guarantees the practical validity of our proposed design method.