Yang Liu

Impacts of blood flow restriction training on lower limb strength qualities in elite university football players

Changjun Hu, Zhihao Sun, Xuan Zhang, Yang Liu

The primary aim of this study was to directly compare the effects of low-load (30% 1RM) blood flow restriction training (BFR), moderate-load (50% 1RM) BFR, and traditional high-load resistance training (70% 1RM) on improvements in maximal lower limb strength, rapid strength, and …

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Automated Detection of Abnormal Vibration in Connecting Rod of Vibrating Groove Based on DS Theory Integrating Image and Sound Signals

Xudong Li, Wen Wu, Fei Guo, Minchang Liu et autres

Objective: Because of the aging of parts and mechanical structure, the vibration of connecting rod is easy to produce abnormal state, while the abnormal vibration states are difficult to detect in a timely manner,thus resulting in shutdown and material breakage during the …

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Signal difference-based nondestructive low-frequency electromagnetic testing for ferromagnetic material pipe equipment

Zexu Liu, Xiang Li, Ruimeng Zhang, Yingqi Yang et autres

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High-sensitivity optical fiber magnetic field sensor based on multimode optical fiber multi Fabry-Perot interference cavities

Yang Liu, Zhenlin Huang, Zhihao Wang, Yueming Zhang et autres

A high-sensitivity optical fiber magnetic field sensor based on a multi-Fabry-Perot interference (F-P) cavity in an etched multimode optical fiber (MMF) was proposed. The MMF was etched along the fiber axis and a hole with the length of about 250 µm formed …

Phase-Extraction-Based MFL Testing for Subsurface Defect in Ferromagnetic Steel Plate

Chengjian Ma, Yang Liu, Changyu Shen

Magnetic flux leakage (MFL) based on phase extraction for detecting the subsurface defects in ferromagnetic steel plate was investigated. The relationship between electromagnetic field phase and the subsurface defect was analyzed. Low-frequency alternating current (AC) excitation source and high-power magnetizer arrangement with …

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Passive Noise Suppression in Yb-Doped Fiber Amplifier Based on Nonlinear Amplifying Loop Mirror

Tang ZhenQiang, Daping Luo, Lian Zhou, Gehui Xie et autres

A 3.8 mW/Gbps quad-channel 8.5–13 Gbps serial link with a 5-tap DFE and a 4-tap transmit FFE in 28 nm CMOS

Tamer Ali, Lakshmi P. Rao, Ullas Singh, Mohammed Abdul-Latif et autres

This paper presents a quad-lane serial link that supports virtually all data center system-side and line-side communications standards from 8.5-13 Gbps, implemented in 28 nm CMOS. The Tx is series source terminated with a 4-tap FFE. Its swing ranges from 33 mV …

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An optimized strain demodulation method for PZT driven fiber Fabry–Perot tunable filter

Wenjuan Sheng, Gang‐Ding Peng, Yang Liu, Ning Yang

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Compact in-line optical notch filter based on an asymmetric microfiber coupler

Ping Zhao, Lei Shi, Yang Liu, Zheqi Wang et autres

Novel compact in-line optical filters with narrow rejection bandwidths are proposed, and one is experimentally demonstrated based on asymmetric microfiber (MF) couplers. It is composed of silica and bismuth-oxide-glass MFs and less than 500 μm long. Single transmission dips in a wavelength …

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Photonic crystal fiber refractive index sensor based on a fiber Bragg grating demodulation

Wenwen Qian, Chi Chiu Chan, Chunliu Zhao, Yang Liu et autres

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Temperature-Independent Fiber Bending Sensor Based on a Superimposed Grating

Xinyong Dong, Yang Liu, Liyang Shao, Juan Kang et autres

A compact fiber bending sensor has been presented by superimposing a uniform fiber Bragg grating (FBG) into a tilted fiber Bragg grating (TFBG). The reflection of FBG is modulated by the same bandwidth of the cladding modes of TFBG, which is sensitive …

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Compact fiber bending sensor based on superimposed gratings

Yang Liu, Xinyong Dong, Liyang Shao, Juan Kang et autres

This work has presented a compact fiber bending sensor by superimposing a uniform fiber Bragg grating (FBG) in a tilted fiber Bragg grating (TFBG). The band of light reflected by the FBG passes through the TFBG twice and is modulated by its …

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