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3rd International Conference for Innovation in technology, INOCON 2024

作者： rana, Saurabh G. Talati, Shefali desai, Manish J. The Maharaja Sayajirao University Faculty of Technology and Engineering Department of Electrical Engineering Vadodara India Electrical Research and Development Association Department of R&d Vadodara India

ISBN: (纸本)9798350381931

The power system needs to operate reliably and efficiently, with the distribution system being a critical component. distribution systems are prone to faults and malfunctions for several reasons. These issues can have a significant impact on the power grid, but their effects can be minimized quickly and accurately through fault diagnostics. Electric utilities face an ongoing challenge in promptly and precisely identifying and locating faults in the distribution system. AI tools can be an efficient method for accurately identifying these faults. There are several possible diagnostic methods, such as fuzzy logic, ANN (artificial neural network), ANFIS (adaptive neuro-fuzzy inference system), support vector machines, genetic algorithms, and matching approaches. Each technique has its own advantages and disadvantages. The paper has employed fuzzy logic for fault detection, identification, and location. This paper includes the study of multiple faults on different buses. Also, the identification and location of multiple faults are included. The simulation and algorithm development have been carried out in MATLAB/Simulink. Thus, fault detection, identification, and location have been done through a fuzzy logic algorithm. © 2024 IEEE.

关键词： Location

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Microstructure and shear properties evolution of Mn-doped SAC solder joint under isothermal aging

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Journal of Iron and Steel research International 2023年第8期30卷 1650-1660页

作者： Cheng-ming Li Shu-jin Chen Shan-shan Cai Ju-bo Peng Xiao-jing Wang Ying-wu Wang School of Material Science and Engineering Jiangsu University of Science and TechnologyZhenjiang 212003JiangsuChina R&D Center Yunnan Tin Group(Holding)Co.Ltd.Kunming 650000YunnanChina Modern School of Engineering Yunnan UniversityKunming 650091YunnanChina

The effects of Mn addition(0.005,0.01,0.03,0.05,and 0.07 wt.%)on microstructure,shear mechanical behavior,and interfacial thermal stabilities of SAC305 joints were investigated under isothermal aging temperatures of 170 C with different aging time(0,250,500,and 750 h).It is found that Mn addition can increase fracture energy of joints without decreasing the shear *** the microstructures have transformed from the eutectic net-like structure in SAC305 solder joints into the structures based onβ-Sn matrix with intermetallic compounds(IMCs)*** doping 0.07 wt.%Mn,the Cu_(6)Sn_(5) growth along the SAC305/Cu interface during thermal aging can be inhibited to some *** isothermal aging at 170°C,the maximum shear force of solder joint decreases continuously with aging time increasing,while the fracture energy rises first and then decreases,reaching the maximum at 500 h compared by that with the microstructure ***_(3)Sn growth between Cu_(3)Sn_(5)/Cu interface has been retarded most at the aging time of 250 h with 0.07 wt.%Mn-doped *** the aging time prolonging,the inhibition effect of Mn on CusSn IMC layer becomes *** strengthening effect of Mn can be explained by precipitation strengthening,and its mechanical behavior can be predicted by particle strengthening model proposed by Orowan.

关键词： SAC305 solder Mn doping Shear mechanical behavior Isothermal aging Interfacial intermetallic compound

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design and implementation of the second-generation COSPAS-SArSAT distress beacon based on Sdr 6

Design and implementation of the second-generation COSPAS-SA...

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6th IEEE International Conference on Automation, Electronics and Electrical Engineering, AUTEEE 2023

作者： renle, Zheng Wenxue, Liu Chaosan, Yang Jintao, Wan dongyang, Li Jinhai, Li Imecas Communications and Information Engineering R&d Center Beijing China Imecas New Technology Development Department Beijing China

ISBN: (纸本)9798350305623

COSPAS-SArSAT has currently completed the design of a new generation distress beacon systems, namely the second-generation distress beacon system. The second-generation distress beacon adopts dSSS-OQPSK as its basic signal modulation mode, while adopting a new signal detail structure. This paper provides a solution for the hardware implementation of the second-generation COSPAS-SArSAT distress beacon on Software-defined radio (Sdr). Firstly, the baseband signal that meets the definition format of the second-generation beacon standard was generated, and then the second-generation beacon was transmitted through the Universal Software radio Peripheral (USrP). By comparing with specific requirements of the second-generation distress beacon standard, the second-generation beacon generated by this paper can meet the requirements of the second-generation COSPAS-SArSAT distress beacon standard, and the method proposed in this paper has the advantages of flexibility and higher signal reconfigurability. © 2023 IEEE.

关键词： COSPAS-SArSAT dSSS-OQPSK Sdr second-generation distress beacon

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Organic matter occurrence and pore-forming mechanisms in lacustrine shales in China

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Petroleum Science 2022年第4期19卷 1460-1472页

作者： Li-Chun Kuang Lian-Hua Hou Song-Tao Wu Jing-Wei Cui Hua Tian Li-Jun Zhang Zhong-Ying Zhao Xia Luo Xiao-Hua Jiang Science and Technology R&D Department CNPCBeijing100000China Research Institute of Petroleum Exploration and Development CNPCBeijing100083China National Energy Tight Oil and Gas R&D Center Beijing100083China Key Laboratory of Oil and Gas Reservoirs CNPCBeijing100083China

The evolution of pore structure in shales is affected by both the thermal evolution of organic matter(OM)and by inorganic diagenesis,resulting in a wide variety of pore *** paper examines the OM distribution in lacustrine shales and its influence on pore structure,and describes the process of porosity *** principal findings are:(i)Three distribution patterns of OM in lacustrine shales are distinguished;laminated continuous distribution,clumped distribution,and stellate scattered *** differences in total organic carbon(TOC)content,free hydrocarbon content(S_(1)),and OM porosity among these distribution patterns are discussed.(ii)Porosity is negatively correlated with TOC and plagioclase content and positively correlated with quartz,dolomite,and clay mineral content.(iii)Pore evolution in lacustrine shales is characterized by a sequence of decreasing-increasing-decreasing porosity,followed by continuously increasing porosity until a relatively stable condition is reached.(iv)A new model for evaluating porosity in lacustrine shales is *** this model,the organic and inorganic porosity of shales in the Permian Lucaogou Formation are calculated to be 2.5%-5%and 1%-6.3%,respectively,which correlate closely with measured *** findings may provide a scientific basis and technical support for the sweet spotting in lacustrine shales in China.

关键词： Shale oil Unconventional oil and gas Organic matter Pore evolution Log interpretation model

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Impact of Interfacial Layer on the Optoelectronic Performance of MoTe2/Ge Heterojunction 17

Impact of Interfacial Layer on the Optoelectronic Performanc...

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17th IEEE International Conference on Solid-State and Integrated Circuit technology, ICSICT 2024

作者： Lei, Wenyu Wen, Xiaokun di, Boyuan Xu, Xinyue Chang, Haixin Zhang, Wenfeng School of Materials Science and Engineering Huazhong University of Science and Technology Key Laboratory of Material Processing and Die & Mould Technology Wuhan430074 China Shenzhen R&D Center Huazhong University of Science and Technology Shenzhen518000 China

ISBN: (纸本)9798350361834

In this paper, three types of ultra-thin interfacial oxide layers including GeO2, Al2O3, and SiO2, are designed to inserted into the interface of MoTe2/Ge heterojunction to investigate its impact on the photoelectric performance. The device with GeO2 interfacial layer exhibits the maximum responsivity and detectivity as well as the relatively large rectification ratio, reaching values of 1.38 A/W, 1.32× 10 13 Jones, and 140, respectively. For the device with Al2O3 interfacial layer, the maximum rectification ratio and the relatively high detectivity are achieved, reaching values of 807 and 1.56× 10 11 Jones, respectively. While for the MoTe2/Ge heterojunction with SiO2 interfacial layer, which shows an ideality factor of 2.14 and the lowest rectification ratio together with the detectivity. These results indicate that both the interface quality and bandgap of ultrathin interfacial layer would be crucial for the photoelectronic performance of MoTe2/Ge heterojunction. © 2024 IEEE.

关键词： Tellurium compounds

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16-1: The Challenge and development in Ar-HUd

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SId Symposium digest of Technical Papers 2024年第S1期55卷 134-137页

作者： Fushun Wan Shanshan Zhang Jiandong Wang Xiongping Li Technology Development Department Shanghai Tianma R&D Center Shanghai China

With the development of intelligent network technology, the vehicle has gradually changed from a kind of transportation to a "third living space" for human beings. People need more intelligent and emotional vehicle functions, while traditional dashboards have been unable to meet the needs of human-car interaction. In this context, the head-up display (HUd) came into the public vision. While augmented reality head-up display (Ar-HUd) brings intelligent driving experience, it also brings more stringent requirements for related components. In this paper, we will highlight the challenge and development in Ar-HUd.

关键词： Ar-HUd challenge development

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Study on the Multiphase Flow Behavior in the Jet Pump Lifted Natural Gas Hydrate Wells with Combined depressurization and Heat Injection Method

Study on the Multiphase Flow Behavior in the Jet Pump Lifted...

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International Petroleum and Petrochemical technology Conference 2024, IPPTC 2024

作者： Ping, Xiaolin Han, Guoqing Zhang, Jiqun Wang, Hongliang Liu, Changchun Liu, Jungang China Research Institute of Petroleum Exploration & Development PetroChina China Artificial Intelligence Technology R&D Center for Exploration and Development CNPC China PetroChina Changqing Oilfield Company China Exploration & Development Research Institute of Changqing Oilfield China

Natural gas hydrate production tests have been carried out successfully with different exploitation methods and gas recovery drainage technologies. The purpose of this study is to elucidate the fluid flow behavior in the jet pump lifted natural gas hydrate wells and optimize hot water injection parameters for the jet pump drainage gas recovery technology. The mechanism of jet pump drainage recovery of natural gas hydrate wells was analyzed and its applicability to natural gas hydrate exploitation with combined depressurization and heat injection method was demonstrated. In addition, multiphase flow models of tubing and annulus were established respectively for the phenomenon of countercurrent flow of heat exchange in the jet pump drainage gas recovery process, and the corresponding multiphase flow laws were derived. Based on the study of multiphase flow, sensitivity analysis and optimization of heat injection parameters were performed. It has been demonstrated that jet pump drainage gas recovery technology is suitable for the exploitation of onshore natural gas hydrate with combined depressurization and heat injection method. The multihphase flow behavior in the tubing and annulus of the jet pump lifted natural gas hydrate wells was disclosed in this study. Numerical simulation results show that the temperature and pressure distribution in the wellbore of the jet pump lifted natural gas hydrate wells during the recovery process are affected by the injection conditions. This study provides theoretical guidance for the production optimization and hydrate prevention and control in the wellbore of the jet pump lifted natural gas hydrate wells. © 2024 Institute of Physics Publishing. All rights reserved.

关键词： Sensitivity analysis

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Study on Fracture Propagation in Tight Sandstone by Large-Scale Physical Simulation Experiments 12th

Study on Fracture Propagation in Tight Sandstone by Large-Sc...

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12th International Field Exploration and development Conference, IFEdC 2022

作者： Li, Jia-Ying Qi, Chun-Yan Wu, Bo-Hong Gu, Ye Zhou, Tuo CNPC Engineering Technology R&D Company Limited Beijing China CNPC Research Institute of Petroleum Exploration and Development Beijing China

ISBN: (纸本)9789819919635

Physical simulation experiment on hydraulic fracturing is an effective and reliablemethod to understand the initiation and propagation of hydraulic fractures. However, shale and cement samples are mostly used in current experiments, while tight sandstone is seldom studied. Besides, the experiments are usually conducted with single-stage fracturing, ignoring the interaction between fractures in the actual fracturing. In this paper, a pioneer large-scale physical simulation experiment is conducted by multi-stage hydraulic fracturing to reveal the initiation and propagation of fracture in tight sandstone. Two groups of tight sandstone samples were prepared as the size of 28 × 28 ×36,where four circular notches were designed on the wellbore to represent fracturing clusters. The tests were performed by a large block polyaxial stress frame and the acoustic emissions data were observed to indicate the features of fracture complexity. Consequently, the effects of hydraulic fracture interaction, pumping rate and rate pulsing on fracture propagation were studied. The results showed that the simple fractures were mainly formed in tight sandstone, while the complex fractures were rarely formed since the mutual inhibition between fractures under stress shadow. The fracture initiation and breakdown pressures increase gradually with the pump rate, while the rate change has no significant effect on the fracture radius. The rate pumping can effectively increase fracture complexity, further improving the effect of reservoir stimulation. This work successfully reveals the effects of different factors on fracture initiation and propagation, offers an innovative method of physical simulation experiment on hydraulic fracturing, and provides a significant reference for fracturing design optimization of tight sandstone. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2023.

关键词： Fracture

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A novel reprocessable chloroprene rubber based on dynamic disulfide metathesis

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International Journal of Smart and Nano materials 2024年第1期15卷 42-61页

作者： Jianliang Jiang Junxue Zhai Yanqing Chen dongqi Zhao Yakai Feng School of Chemical Engineering and Technology Collaborative Innovation Center of Chemical Science and Chemical Engineering(Tianjin)Tianjin UniversityTianjinChina R&D Department of China(Yangzhou) Material Handling Tech-Engineering LtdYangzhouChina Key Laboratory of Rubber Plastics of Ministry of Education/Shandong Province (QUsT)School of Polymer Science&EngineeringQingdao University of Science&TechnologyQingdaoChina R&D Department of Tianjin Joaboa Technology Co.Ltd TianjinP.R.China Frontiers Science Center for Synthetic Biology Tianjin UniversityTianjinChina Key Laboratory of Systems Bioengineering(Ministry of Education) Tianjin UniversityTianjinChina

For sustainable application of chloroprene rubber(Cr),a new technology is developed by the vulcanization of Cr using 2,2'-dithiodipyridine(dPd)as a cross-linking agent with the repro-cessing performance owing to disulfde *** dPd was incorporated into Cr vulcanization,the Menschutkin reac-tion between allyl chloride group and pyridine group occurred with a maximum exothermic peak at 184°*** number of effective cross-linking bond at o.5 phr dPd vulcanizate was higher than that at high dPd *** vulcanizate showed high tensile strength(11.12 MPa)and elongation at break(1253±120%)owing to the exchangeable disulfide bond in the *** the catalysis of triphenylphosphine,the metathesis of disulfide compound was improved obviously,which endowed Cr/dPd vulcanizates with good recyclability *** cross-linkage maintains its stability at low temperature,thus ensuring the mechanical stability of Cr/dPd vulcanizate under the ambient *** and reprocessing of Cr/dPd vulcanizate can be conducted with common industrial rubber processing *** reprocessable chloroprene rubber could have potential appli-cation in Cr industry,also serve to significantly improve envir-onmental sustainability.

关键词： Chloroprene rubber reprocessable Menschutkin reaction disulfide

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reverse Laser Assisted Bonding (r-LAB) technology for Chiplet Module Bonding on Substrate 24

Reverse Laser Assisted Bonding (R-LAB) Technology for Chiple...

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24th Electronics Packaging technology Conference, EPTC 2022

作者： Na, SeokHo Gim, MinHo Kim, GaHyeon ryu, dongSu Park, dongJoo Kim, JinYoung Amkor Technology Korea Inc. Advanced Process & Material Development Global R&d Center 150 Songdomirate-ro Yeonsu-gu Incheon Korea Republic of

ISBN: (纸本)9798350398854

There are several chip-to-substrate interconnection technologies in the packaging tool kit such as mass reflow (Mr), thermocompression bonding (TCB) and laser assisted bonding (LAB). Mr is a mature process but has known limitations on fine pitch devices and large/thin substrate packages. TCB has the advantage to minimize bump stress for low-K dielectric devices but its productivity is very low. However, LAB can provide a solution for advanced devices with its localized heating and short bonding time. recently, demand for fine-pitch, Flip Chip bumps and large/thin substrate packages has increased, resulting in industry interest in LAB due to its good quality and high productivity. Amkor technology invented LAB technology in 2014 and passed qualification for multiple devices from customers through many years of development and has been in high volume production for major customers since 2018. However, as the industry continues to require high bonding performance with various new devices, existing LAB technology may not support all these applications. These devices have led to the development of a new bonding concept, which is reverse laser assisted bonding (r-LAB) technology. r-LAB emits the laser to the bottom side of the substrate through a vacuum stage block, which is opposite laser emission direction to existing LAB. It was developed in 2021 by Amkor technology and showed promising results for the packages where top LAB does not work. There are several devices that require r-LAB. One is back side metallization (BSM) die. BSM dies are necessary for metal thermal interface material (TIM) applications for high thermal performance packages. Promising results for BSM die were published in recent 72nd ECTC [1]. Other devices that require r-LAB include chiplet module bonding on substrate and drAM packaging in an epoxy molding compound (EMC). A chiplet module is necessary for high-performance applications such as servers, networking, artificial intelligence (AI), graphics

关键词： Substrates

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