Zhenglin Zhang

University of Maryland, College Park

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Qinghua Zhang

Yunnan University

Yangyang Sun

PLA Army Engineering University

Yuan Wang

University of Ottawa

Xiaodi Huang

Charles Sturt University

Lei Gao

Shandong University

Zewei You

PLA Army Engineering University

Xiang Wu

Shenyang University of Technology

Jianli Duan

Sun Yat-sen University

Fengyu Qu

Harbin Normal University

Jingbo Bai

Shandong Institute of Agricultural Sustainable Development

Cooperative Institutions

Sensors (United States)

201

Chinese Academy of Sciences

University of Electronic Science and Technology of China

Sichuan University

Sun Yat-sen University

Shanghai Jiao Tong University

Harbin Institute of Technology

Fudan University

Peking University

University of Chinese Academy of Sciences

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Analysis and experimental study on the strain transfer mechanism of an embedded basalt fiber-encapsulated fiber Bragg grating sensor

Optical Engineering (2017)

Zhenglin Zhang Yuan Wang Yangyang Sun Qinghua Zhang Zewei You

The precision of the encapsulated fiber optic sensor embedded into a host suffers from the influences of encapsulating materials. Furthermore, an interface transfer effect of strain sensing exists. This study uses an embedded basalt fiber-encapsulated fiber Bragg grating (FBG) sensor as the research object to derive an expression in a multilayer interface strain transfer coefficient by considering the mechanical properties of the host material. The direct impact of the host material on the strain transfer at an embedded multipoint continuous FBG (i.e., multiple gratings written on a single optical fiber) monitoring strain sensor, which was self-developed and encapsulated with basalt fiber, is studied to present the strain transfer coefficients corresponding to the positions of various gratings. The strain transfer coefficients of the sensor are analyzed based on the experiments designed for this study. The error of the experimental results is ∼2 μϵ when the strain is at 60 μϵ and below. Moreover, the measured curves almost completely coincide with the theoretical curves. The changes in the internal strain field inside the embedded structure of the basalt fiber-encapsulated FBG strain sensor could be easily monitored. Hence, important references are provided to measure the internal stress strain of the sensor.

Fiber Bragg Grating

Basalt fiber

Strain (injury)

10.1117/1.oe.56.1.017105

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Citations (11)

Research and application of open-hole gravel pack sand control technique optimization in horizontal well

Oil Drilling & Production Technology (2009)

Zhenglin Zhang

By the analysis of the reservoir,the fluid nature,the theory,the test of the formation sand,optimization of the technique design parameters of open-hole horizontal well gravel pack sand control is brought up in this paper.Results show that the significant effect can be appeared.The successful implementation of the technology has been greatly enhanced the level of sand control technology in horizontal well of Dagang Oilfield,and will be conduce to the development of the sea beach oil field which has a similar reservoir of the Bohai sea.

Source

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Citations (1)

Strain transfer in distributed fiber optic sensor with optical frequency domain reflectometry technology

Optical Engineering (2019)

Qinghua Zhang Yangyang Sun Zhenglin Zhang Peng Zeng Jianli Duan

Present research on strain transfer in optical fiber sensors focuses on high-precision, point-bonded fiber Bragg grating sensors. The spatial resolution of a traditional distributed fiber optic sensor (DOFS) reaches submeter or meter, and strain transfer in these sensors is rarely noticed. The accuracy of the DOFS based on optical frequency domain reflectometry used in our paper is improved significantly compared to previous sensors. It has an accuracy of 0.1 and a spatial resolution of 1 mm. Therefore, the strain transfer performance of such a high-precision DOFS should be investigated further. We fixed a DOFS on a host structure using an adhesive, and the factors influencing strain transfer were studied, including the “endpoint effect,” bond length, shear modulus of the coating and adhesive layers, and thickness of the adhesive layer. A theoretical strain transfer model for a DOFS was designed and the theoretical strain transfer coefficient was calculated using numerical simulations. Furthermore, an evaluation of the theoretical model was implemented using a uniform strength beam. The experimental results are consistent with the simplified two-layer strain transfer model presented in our paper. The effect of the bond length on strain transfer is summarized from experimental and numerical simulation results, i.e., a larger adhesive length leads to a higher strain transfer coefficient and smaller “endpoint effect.” If the shear modulus of the fiber coating layer and the glue is high, we obtain a high train transfer coefficient and small “endpoint effect.” These conclusions provide a useful reference for the application of DOFS in practice.

Reflectometry

Fiber Bragg Grating

Structural Health Monitoring

10.1117/1.oe.58.2.027109

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Citations (14)

Selective epichlorohydrin-sensing performance of Ag nanoparticles decorated porous SnO₂architectures

CrystEngComm (2013)

Zhenglin Zhang Haiyan Song Shishu Zhang Junyan Zhang Wenya Bao

Epichlorohydrin (ECH) is mainly an industrial raw material, while it is toxic and dangerous for human health, so finding a simple and effective method for detecting ECH gas is challenging work. Porous SnO2 structures are successfully obtained through a hydrothermal method using SnCl4·5H2O as the tin source and water as the solvent. Ag nanoparticle (NPs) decorated porous SnO2 structures have also been prepared by the impregnation method. The morphology and structure of the as-prepared products were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and the nitrogen adsorption–desorption technique. The as-synthesized nanostructures, with diameters ranging from 4–5 μm, are composed of porous nanosheets with an average thickness of 60 nm. The gas sensing properties of the Ag NPs decorated porous SnO2 structures for ECH gas were investigated in detail, and the results showed that the 10% Ag NPs decorated porous SnO2 structures gas sensor was the optimum sensor, demonstrating a response (S = 50) for 100 ppm of ECH gas, while the working temperature was decreased by about 180 °C. In addition, it showed a low detection level (0.5 ppm) for ECH gas, good reproducibility and repeatability, and long-term stability, implying a promising application in detecting ECH gas.

Epichlorohydrin

10.1039/c3ce41478g

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Citations (30)

Applications of optical frequency-domain reflectometry technology in strain-deformed configuration conversion of structural surface deformed configuration measurement

International Journal of Distributed Sensor Networks (2019)

Zhenglin Zhang Yangyang Sun Qinghua Zhang Jianli Duan Lei Gao

In this study, the conversion relation between deformed configuration and strain during structural monitoring was analyzed based on the basic mechanics principle of materials. A distributed fiber optic measurement system was used to measure the accurate values of structural surface strain, and then calculate the intensity of surface-deformed configuration further. An optical fiber was attached to the surface of a flexible steel ruler, and the generated strain data were used to precisely measure the endpoint-deformed configuration of the ruler. Furthermore, the calculated deformed configuration was calculated and compared with the actual deformed configuration. It was found that the curves of calculated deformed configuration basically coincided (with a relative error of less than 0.6%) with the curves of actual deformed configuration.

Reflectometry

Configuration design

Strain (injury)

10.1177/1550147719891636

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Citations (2)

Microstructures and Properties of Ultra-high Strength Steel by Laser Welding

ISIJ International (2011)

Zhengwei Gu Sibin Yu Lijun Han Jia Meng Hong Xu

Based on the experiments of laser welding of ultra-high strength steel (UHSS), joint morphology, microstructure, hardness and tensile-shear properties are investigated. The results show that the defects such as gas holes and cracks do not appear in the weld metal if the optimized parameters are employed. Microstructures of the weld metal and HAZ are mainly martensite, the widths of martensite lath aren't sensitive to the welding speed. However, the welding speed affects the grain sizes of prior autensite of the weld metal. When changing the welding speed from 20 mm/s to 35 mm/s, the mean widths of prior austenite grains decrease from 10.67 μm to 7.68 μm. In the HAZ, the hardness decreases apparently for the soft ferrite appears. The test results also show that the joint tensile-shear strength can satisfy the demand of production. Consequently, the laser welding quality of UHSS is reliable for manufacturing.

Lath

Welding joint

Flash welding

10.2355/isijinternational.51.1126

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Citations (13)

Study on source and control of high Al₂O₃ containing inclusions in tire cord steel

Journal of Physics Conference Series (2024)

Zhenglin Zhang F. Richard Yu

Abstract The composition, size and morphology of inclusions that initiated the fractures of the tire cord during fabrication were investigated to decrease the breakage frequency of the saw wire. It was found that they were high melting point inclusions in lumpy shapes and large sizes, highly composed of Al 2 O 3 . Characteristics of inclusions appearing on the fractures were compared to inclusions observed in wire rods and materials of refractory used in the steelmaking process. The obtained results indicated that refractories used in the steelmaking process were the possible contamination sources of alumina inclusions. The frequencies of wire breakage caused by inclusions in the wire drawing process could be remarkably reduced from 4.2 to 1.5 times/ton by changing the refractories used in casting into non-Al 2 O 3 -based.

10.1088/1742-6596/2713/1/012058

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Assembling SnO Nanosheets into Microhydrangeas: Gas Phase Synthesis and Their Optical Property

Nano-Micro Letters (2012)

Zhenglin Zhang Jing Wang Yu Zhou Fengyu Qu Xiang Wu

Abstract Large scale SnO microhydrangeas are obtained successfully through thermally evaporating of SnO 2 powder wrapped by a filter paper at 1050°C and using gold coated Si wafer as the substrate. The as-obtained SnO microhydrangeas are consisted of many thin nanosheets with the thicknesses of 30–60 nm and the diameters of 500–600 nm. A vapor-liquid-solid (VLS) growth mechanism for the as-synthesized SnO microhydrangeas was proposed based on experimental results. Photoluminescence spectrum (PL) shows that there is a strong sharp ultraviolet emission peak at 390 nm, revealing that these three-dimensional SnO microhydrangeas may have potential applications in optoelectronic fields.

Ultraviolet

10.1007/bf03353717

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Citations (9)

Table of Contents

Liren Zhou Li Zhu Geng Ji Yi Qin Yang Pan

Table (database)

10.1109/icemi52946.2021.9679512

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Antecedents and performance consequences of external involvement in new product development

International Journal of Internet Manufacturing and Services (2017)

Bing Liu Di Cai Zhenglin Zhang

This study enriches the external involvement literature, through examining the impacts of demand uncertainty, supply uncertainty, technology uncertainty, top management support and information technology (IT) implementation on two dimensions of external involvement, and the effect of external involvement on firm performance. We propose and empirically test a comprehensive model using data collected in Chinese manufacturing companies. Our findings indicate that technology uncertainty and top management support have positive impacts on both customer involvement and supplier involvement. IT implementation has a significantly positive impact on customer involvement but has no significant impact on supplier involvement. The results also suggest that demand uncertainty and supply uncertainty do not impact on either customer involvement or supplier involvement. Both customer involvement and supplier involvement can improve firm performance significantly.

Customer Relationship Management

Supplier relationship management

Supply management

10.1504/ijims.2017.087791

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