Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Huaixiang Ma"'
Autor:
Liman Yang, Xuze Guo, Jianfu Chen, Yixuan Wang, Huaixiang Ma, Yunhua Li, Zhiguo Yang, Yan Shi
Publikováno v:
Chinese Journal of Mechanical Engineering, Vol 36, Iss 1, Pp 1-15 (2023)
Abstract Shield machines are currently the main tool for underground tunnel construction. Due to the complexity and variability of the underground construction environment, it is necessary to accurately identify the ground in real-time during the tun
Externí odkaz:
https://doaj.org/article/399396b59f3e45f19a0692a54bb97957
Publikováno v:
Journal of Vibration Engineering & Technologies.
Publikováno v:
2018 Asia Communications and Photonics Conference (ACP).
This paper proposes a compact acoustic emission (AE) detection technique based on distributed feedback fiber laser (DFB-FL) using beat frequency interrogation. Because of the ultra-narrow linewidth of beat frequency and time-frequency analysis method
Publikováno v:
International Journal of Non-Linear Mechanics. 47:975-983
In this paper, the primary resonance of Duffing oscillator with two kinds of fractional-order derivatives is investigated analytically. Based on the averaging method, the approximately analytical solution and the amplitude–frequency equation are ob
Publikováno v:
SPIE Proceedings.
A systematic study of rock mass acoustic emission (AE) detection using distributed feedback (DFB) fiber grating lasers is presented. In this, a minimum detectable strain of 10 -12 is achieved in the experiment when using a fiber optic interferometric
Publikováno v:
SPIE Proceedings.
This paper presents a rail corrugation measurement system based on fiber laser accelerometers (FLAs) which are installed on the bogie of the train. When the train passes the rail with corrugation, the corrugation induced acceleration of the bogie wil
Publikováno v:
SPIE Proceedings.
In this paper we repot a novel acoustic emission detection method using a fiber laser array. The ultra-narrow line width of the DFB fiber laser will result in a low equivalent noise level when using a fiber optic interferometric demodulation. A minim
Publikováno v:
2011 Third International Conference on Measuring Technology and Mechatronics Automation.
The nonlinear vehicle-road coupled system is modeled as a seven DOF vehicle moving along a simply supported double-layer rectangular thin plate on a nonlinear viscoelastic foundation. The vehicle suspension stiffness, suspension damping and tire stif
Publikováno v:
Measurement Science and Technology. 24:094014
Efficient inspection methods are necessary for detection of rail corrugation to improve the safety and ride quality of railway operations. This paper presents a novel fiber optic technology for detection of rail corrugation based on fiber laser accel
Publikováno v:
Measurement Science & Technology; 2013, Vol. 24 Issue 9, p1-7, 7p