|
|
|
|
|
Yoonjae Chung, Seungju Lee, Ranjit Shrestha and Wontae Kim
Recently, thermographic testing has been applied as a non-destructive evaluation technology for composite materials due to its remarkable advantages, such as its non-contact, non-destructive, and high-speed properties, it is harmless to the human body an...
ver más
|
|
|
|
|
|
|
|
|
|
|
Deman Tang and Earl H. Dowell
Several examples of experimental model designs, wind tunnel tests and correlation with new theory are presented in this paper. The goal is not only to evaluate a new theory, new computational method or new aeroelastic phonomenon, but also to provide new ...
ver más
|
|
|
|
|
|
|
|
|
|
|
Erfan Taheri, Ming Zhao and Helen Wu
The response of an elastically mounted circular cylinder vibrating in an oscillatory flow oblique to the flow direction is investigated. Simulations are conducted for vibration angles ranging from 0° to 90°, with 0° and 90° corresponding to the cases whe...
ver más
|
|
|
|
|
|
|
|
|
|
|
Jiaming Xiong, Song Sang, Xiao Shi and Chaojie Gan
This study investigates the vertical-type submerged floating tunnel with anchor cables. Based on the characteristics of the anchor cables, the anchor cables are simplified as a nonlinear beam model with hinged ends. Disregarding the axial displacement of...
ver más
|
|
|
|
|
|
|
|
|
|
|
Luigi Lombardi, Gianvito Matarrese and Cristoforo Marzocca
The quartz tuning fork used as an acoustic sensor in quartz-enhanced photo-acoustic spectroscopy gas detection systems is usually read out by means of a transimpedance preamplifier based on a low-noise operational amplifier closed in a feedback loop. The...
ver más
|
|
|
|
|
|
|
|
|
|
|
Bin Wang, Shan Gao, Yan Qu, Haoyang Yin and Zhenju Chuang
This paper addresses a detailed analysis of the ice?structure interaction process of the phase-locked ice crushing (PLC) against offshore structures. Directly measured ice load, structure response data, and in situ observation from the field measurements...
ver más
|
|
|
|
|
|
|
|
|
|
|
Haojie Ren, Mengmeng Zhang, Jingyun Cheng, Peimin Cao, Yuwang Xu, Shixiao Fu and Chang Liu
Different from the previous studies of the vortex-induced vibration (VIV) dominated by first mode of flexible pipe in an oscillatory flow, the features of a higher mode dominated are experimentally investigated in the ocean basin. The flexible pipe is fo...
ver más
|
|
|
|
|
|
|
|
|
|
|
Chang Liu, Ziqian Yue, Zitong Xu, Ming Ding and Yueyang Zhai
In atomic physics experiments, a frequency-stabilized or ?locked? laser source is commonly required. Many established techniques are available for locking close to an atomic resonance. However, in many instances, such as atomic magnetometer and magic wav...
ver más
|
|
|
|
|
|
|
|
|
|
|
Haidong Wang, Teng Wu, He Wang, Sheng Li, Zaisheng Lin, Xiang Peng and Hong Guo
We propose a compact 4He magnetometer realizing magnetic field measurement and laser-frequency stabilization simultaneously in a single 4He atomic cell. The frequency stabilization scheme is based on the asymmetric line shape of magnetic resonance which ...
ver más
|
|
|
|
|
|
|
|
|
|
|
Zhun Meng, Yi-Feng Wang, Liang Yang and Wei Li
A high frequency dual-buck full-bridge inverter for small power renewable energy applications is proposed in this paper. The implementation of the wide band gap SiC (Silicon Carbide) power device contributes to the high switching frequency of 400 kHz. Th...
ver más
|
|
|
|
|
|
|
|
|
|
|
Shun Sang, Binhui Pei, Jiejie Huang, Lei Zhang and Xiaocen Xue
Voltage source (VS) control based on inertia synchronization is a novel phase lock loop (PLL)-less autonomous grid-synchronization control strategy suitable for the permanent magnet synchronous generator (PMSG)-based wind turbine. It can autonomously sen...
ver más
|
|
|
|
|
|
|
|
|
|
|
Nedeleg Bigi, Kostia Roncin, Jean-Baptiste Leroux and Yves Parlier
This paper presents a series of dynamic simulations for a ship towed by kite. To ensure time efficient computations, seakeeping analysis with forward speed correction factors is carried out in the frequency domain and then transformed in the time domain ...
ver más
|
|
|
|
|
|
|
|
|
|
|
Weiwei Zhou, Menglan Duan, Rongqi Chen, Huixian Qiu, Huiming Li, Shisheng Wang and Yi Wang
According to the geometric parameters of the tension leg platform, the test model was made with a scale ratio of 1:61. The model was used to conduct the full-depth simulation test of uniform flow and wave current combination in the test pool. The model t...
ver más
|
|
|
|
|
|
|
|
|
|
|
Javad Tavakoli, Hossein Miri Lavasani and Samad Sheikhaei
A low-power and low-jitter 1.2 GHz Integer-N PLL (INPLL) is designed in a 65 nm standard CMOS process. A novel high-gain sampling phase detector (PD), which takes advantage of a transconductance (Gm) cell to boost the gain, is developed to increase the p...
ver más
|
|
|
|
|
|
|
|
|
|
|
Christoph Brandstetter and Sina Stapelfeldt
Non-synchronous vibrations arising near the stall boundary of compressors are a recurring and potentially safety-critical problem in modern aero-engines. Recent numerical and experimental investigations have shown that these vibrations are caused by the ...
ver más
|
|
|
|
|
|
|
|
|
|
|
Shulin Zeng, Cuilin Kuang and Wenkun Yu
Modern low-cost electronic devices can achieve high precision for global navigation satellite systems (GNSSs) and related applications. Recently, the pseudo-range and carrier phase have been directly obtained from a smartphone to establish a professional...
ver más
|
|
|
|
|
|
|
|
|
|
|
Wisnu Wendanto,D Jayus Nor Salim,Dhika Wahyu Trisna Putra
Pág. HAL. 133 - 142
Existing house door security during conventional still uses door locks as keys and often cases of door burglary and theft occur and the majority of homeowners work so the lack of house supervision by the owner. So we need a more practical and efficient k...
ver más
|
|
|
|
|
|