http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : 띠뚜말라이쿠마란 (검색결과 2 건)
- 무료
- 기관 내 무료
- 유료
-
띠뚜말라이쿠마란,고태조,쿠르니아완렌디,Changping Li,M. Uthayakumar 대한기계학회 2017 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.31 No.8
This study discusses the development of an Adaptive neuro–fuzzy inference system (ANFIS) model for determining the surface roughness (Ra) during machining of multidirectional woven fabric Carbon fiber reinforced plastics (CFRP) using Abrasive waterjet machining (AWM). Three variable input parameters—Jet pressure (JP), Traverse speed (TS), and Standoff distance (SOD)—were selected to assess the roughness of the CFRP along the traverse direction of the cut surface. The experimental results show that a lower JP deteriorated the finish by creating surface rupture. On the other hand, a poor surface finish was observed in the case of machining at higher TS and SOD. Further, the developed ANFIS model was used to validate the results and it was found that the predicted values were in good agreement with a 95 % confidence level. It was also evident that the ANFIS technique is helpful for better prediction of the experimental data with minimum error. Finally, the cut surface morphology was analyzed using a 3D non-contact surface profilometer and the results are discussed.
-
Development of a two-frequency, elliptical-vibration texturing device for surface texturing
쿠르니아완렌디,고태조,Li Chang Ping,띠뚜말라이쿠마란,Gandjar Kiswanto,Ping Guo,Kornel F. Ehmann 대한기계학회 2017 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.31 No.7
This study presents the design of a Two-frequency, elliptical-vibration texturing (TFEVT) device. The device was designed to be used in a surface texturing process, and its functionality is based on a combination of ultrasonic (> 20 kHz) and low vibration frequencies (< 100 Hz). The device consists of two parts: The Ultrasonic elliptical motion transducer (UEMT) and the Low frequency displacement amplifier (LFDA). A modal analysis simulation and dynamic experiments were conducted to investigate the dynamic characteristics of the device. The modal simulation was carried out using finite element analysis and the dynamic experiment was evaluated using Frequency response function (FRF) analysis. The working principle of the UEMT is based on a resonance transducer, and the angle between the two Langevin transducers was set as 90 o . The UEMT has two vibration modes, symmetric and asymmetric, and according to experimental data, its working frequency is 24 kHz at the 6 th resonance vibration mode when a Polycrystalline diamond (PCD) tool is attached. The UEMT is able to generate an elliptical locus that has a vertical amplitude of 1.4 µm and a horizontal amplitude of 0.6 µm, under a phase-shift of 90 o . The design of the LFDA is based on a double parallel four-bar flexure hinge, and the displacement output ratio is set to 5. The working principle of the LFDA is based on a non-resonance transducer. The working frequency of the LFDA is below its first of natural frequencies (≈1060 Hz), and it is able to generate sinusoidal motion with a maximum peak-to-peak amplitude of 9 µm. Finally, to investigate the feasibility of the TFEVT device for use in a surface texturing process, several micro-groove cutting tests were performed on an AISI 1045 alloy steel.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
