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Efficient predictive simulation of tool wear in face milling using an advanced 3d numerical approach

Wear 2025年 570卷

作者： Methon, Grégory Courbon, Cédric Auzenat, François M'Saoubi, rachid Girinon, Mathieu rech, Joël Ecole Centrale de Lyon CNRS ENTPE LTDS UMR5513 ENISE 42023 Saint Etienne France R&D Milling and Process Seco Tools AB 22 avenue de la prospective 18020 Bourges France R&D Material and Technology Development Seco Tools AB FagerstaSE-73782 Sweden Cetim 7 rue de la Presse Saint-Etienne42952 France

Being able to predict tool life and the optimal cutting conditions for any combination of cutting tool system and workmaterial is clearly an up-to-date research issue. This work presents an innovative strategy for predicting efficiently tool wear in face milling operations. The primary objective is to develop a methodology capable of handling complex 3d geometries and tool paths within an industrially acceptable computing time. The approach involves a new 3d multi-scale numerical method based on discretizing the tool cutting edge into 2d elementary sections. A 2d Arbitrary Lagrangian-Eulerian (ALE) finite element cutting model is employed to compute local contact pressure, sliding velocity, and heat flux along each section in parallel. An elementary wear equation is applied to calculate the local wear rate after a given time increment, simulating all 2d worn profiles. These profiles are then merged to generate the updated 3d geometry of the worn tool. An iterative procedure is conducted to simulate the evolution of the cutting tool geometry over an extended cutting period. By achieving a good agreement with experimental results in a reasonable computation time, this strategy demonstrates significant potential for optimizing tool life and performance in milling operations. © 2025 Elsevier B.V.

关键词： Milling (machining)

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High-resolution coupling of stratigraphic'sweet-spot'lithofacies and petrophysical properties:A multiscale study of Ordovician Goldwyer Formation,Western Australia

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Petroleum Science 2023年第3期20卷 1312-1326页

作者： Yu-jie Yuan reza rezaee Jian-Wei Gu Song-Tao Wu Emad A.Al-Khdheeawi Jun Wang Bin Pan School of Earth Sciences Yunnan UniversityKunmingYunnan650500China Western Australian School of Mines:Minerals Energy and Chemical EngineeringCurtin UniversityPerthWestern AustraliaAustralia School of Petroleum Engineering China University of Petroleum(East China)QingdaoShandong266580China Research Institute of Petroleum Exploration and Development CNPCBeijing100083China National Energy of Tight Oil and Gas R&D Center Bejing100083China Petroleum Technology Department University of Technology-IraqBaghdad10066Iraq School of Civil and Resource Engineering University of Science and Technology BeijingNo.30Xueyuan RoadBeijing10083China State Key Laboratory of Coal Mine Disaster Dynamics and Control Chongqing UniversityChongqing400044China

The identification of stratigraphic'sweet-spot'interval is significant in oil and gas formation ***,formation evaluation in macroscopic-scale merely provides low resolution and limited infor-mation,thus may lead to uncertainties in resource *** accurately identify the'sweet-spot'intervals amongst heterogeneous lithofacies,we conducted a very high-resolution and quantitative analysis from in-situ macroscopic scale to laboratory microscopic scale on the Goldwyer formation of Canning Basin,Western *** comprehensive advanced well logging and slim-compact micro imager(SCMI)technologies were synthetically applied in couple with the laboratory nanoscaled *** results unveiled an extraordinarily large lithofacies heterogeneity between different rock intervals,with distinguished features shown in Goldwyer Ⅰ,Ⅱ,and Ⅲ *** most favorable lithofacies is recognized as the laminated argillaceous thermally-matured organic matter(OM)-rich mudstone,which is widely developed in Goldwyer Ⅲ as the major attributor to'sweet-spot'*** Ⅱ is exclusively characterized by thick mudstone intervals(94.4%),interbedded with thin calcareous mudstones(5.5%),corresponding to a depositional environment of low-energy distal section of the outer ramp ***,the most favorable lithofacies in'sweet-spot'intervals develop numerous OM-/mineral nanopores for hydrocarbon ***-rich lithofacies develops abundant inter-particle pores from 2 to 17 nm that mainly contribute to pore volume for free gas storage ***-rich lithofacies with higher maturity have OM-pores with good connectivity,bearing large specific surface area that is beneficial for adsorbed gas capacity.

关键词： Shale Nanopore structure Pore characterization Lithofacies

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Solvent-Free Thermoresponsive Nanosponges: Efficient Antigen delivery Carriers and Adjuvants for in Vivo Vaccination

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SSrN 2024年

作者： Lee, Jin Sil Park, Se Young Oh, Hyeryeon Lee, Young-ran Choi, Won Il Bio-Convergence Materials R&D Division Korea Institute of Ceramic Engineering and Technology 202 Osongsaengmyeong 1-ro Osong-eup Heung deok-gu Chungbuk Cheongju28160 Korea Republic of

Background: Vaccination is an effective disease prevention strategy involving immune cell stimulation and formation in response to foreign substances. However, the poor immunogenicity and deliverability of certain antigens necessitate novel methods to enable the establishment of continuous immunity. Therefore, for efficient antigen delivering and simultaneously performing as a nanoadjuvant, herein, we prepared core (polylactic acid)-shell (poloxamer) thermoresponsive nanosponges (TNSs).Methods: We prepared the thermoresponsive nanosponges (TNSs) with core-to-shell ratios of 1:2 and 1:20 by simple nanoprecipitation. Thereafter, antigens (ovalbumin, OVA) were loaded into TNSs by swelling ***: The TNSs were prepared with different size by using differing core-to-shell ratios: TNS1:2 (160 nm) and TNS1:20 (67 nm). When loaded with the model antigen ovalbumin (OVA), TNS1:2 (289 nm) showed a seven-fold higher IL-2 secretion response cross-presentation ability than TNS1:20 (74 nm) and was used in subsequent experiments. TNS1:2 promoted dendritic cell maturation and exhibited high OVA encapsulation (optimal loading: 50 wt%), sufficient long-term stability, and controlled OVA release under physiological conditions. It was not toxic to dendritic cells even at high concentrations. Compared to free OVA, 50 wt% OVA loaded TNS1:2 exhibited better cellular uptake and a superior ability to elicit immune cell IL-2 secretion. The OVA antigen-specific activation of immune cells in mice was examined by monitoring serum IgG levels, cross-presentation to splenocyte Cd8+ T-cells, and IFN-γ cytokine ***: The results highlight TNSs as promising nanoadjuvants and carriers for antigen delivery in vaccine applications. © 2024, The Authors. All rights reserved.

关键词： Antigens

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AHSS welding using undermatching filler wires and process advantages with P-GMAW

AHSS welding using undermatching filler wires and process ad...

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2021 Global Conference on recent Advances in Sustainable materials, GC-rASM 2021

作者： John, Merbin Ashok Kumar, P. Udaya Bhat, K. Department of Metallurgical and Materials Engineering National Institute of Technology Karnataka 575025 India R&D Division Tata Steel Ltd Jamshedpur831007 India

The major challenge during welding of advanced high strength steels (AHSS) is finding an appropriate low cost filler wire which minimizes the softening in the heat affected zone (HAZ). The fabricators always prefer undermatching wires to join the thinner sections. This study reports the differences in the microstructure and mechanical properties of Ti-Nb microalloyed steel prior welded using pulse gas metal arc welding (P-GMAW) and standard gas metal arc welding (GMAW). The results indicate that the microalloyed steel welded using P-GMAW has inherent advantage over the standard GMAW. The pulses intensified the vibration perturbation in the weld puddle which cause microstructural refining and increased formation of the acicular ferrite (AF) constituent. The higher percentage of AF present in the weldment resisted propagation of the crack during static tensile test. Microhardness, ultimate tensile strength and joint efficiency during P-GMAW are much higher than the samples welded by standard GMAW. © 2021 Elsevier Ltd. All rights reserved. Selection and Peer-review under responsibility of the scientific committee of the Global Conference on recent Advances in Sustainable materials 2021.

关键词： Heat affected zone

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directed Electron Transport Induced Surface reconstruction of 2d Nife-Ldh/Stanene Heterojunction Catalysts for Efficient Oxygen Evolution

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SSrN 2024年

作者： Lu, Ze Wang, Jingkun Zhang, Pengfei Guo, Wenhao Shen, Yongqing Liu, Peizhi Ji, Jianlong Zhao, Min Liang, Haojie Guo, Junjie Key Laboratory of Interface Science and Engineering in Advanced Materials Ministry of Education College of Materials Science and Engineering Taiyuan University of Technology Shanxi Taiyuan030024 China Aluminum-Magnesium Based New Material R&D Co. Ltd. Subsidiary of Xing Xian County Economic and Technological Development Zone Xing County Xi'An033600 China

As promising non-noble candidates for oxygen evolution reaction (OEr), NiFe-based layered double hydroxides (NiFe-LdH) has been proven to transform into its high-oxidation-state Ni/Fe oxyhydroxide, which act as the primary active sites. However, advancing the emergence of high-oxidation-state Ni/Fe oxyhydroxide during OEr process currently remains a challenge. Herein, a novel 2d NiFe-LdH/stanene p-n junction catalyst is achieved by inserting stanene between NiFe LdH and Ni foam. Time-dependent raman spectra and density functional theory calculations (dFT) confirm that stanene not only benefits for the construction of built-in electric field, but also serves as an electron absorber to induce a directed electron transport from Ni, Fe to Sn, which thus facilitates the surface reconstruction to form the catalytically active NiOOH. Consequently, an ultralow OEr overpotential (230 mV) at 100 mA cm-2 is achieved, corresponding to a considerable decrease of 22.3 % and 42.1 % compared with the individual NiFe-LdH and stanene, respectively. © 2024, The Authors. All rights reserved.

关键词： density functional theory

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Effect of silicon carbide-based iron catalyst on reactor optimization for non-oxidative direct conversion of methane

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Journal of Energy Chemistry 2023年第6期81卷 519-532,I0012页

作者： Eun-hae Sim Sung Woo Lee Jin Ju Lee Seung Ju Han Jung Ho Shin Gracia Lee Sungrok Ko Kwan-Young Lee Yong Tae Kim C1 Gas&Carbon Convergent Research Center Korea Research Institute of Chemical TechnologyDaejeon 34114Republic of Korea Department of Chemical and Biological Engineering Korea University145 Anam-roSeoul 02841Republic of Korea Department of Chemical and Biomolecular Engineering Yonsei University50 Yonsei-roSeoul 03722Republic of Korea Chemical Data-Driven Research Center Korea Research Institute of Chemical TechnologyDaejeon 34114Republic of Korea Prospective Tech.Exploring Section Basic Chemical R&D centerLottechemical Corp.Daejeon 34059Republic of Korea Department of Advanced Materials and Chemical Engineering University of Science and Technology(UST)Gajeong-dongYuseongDaejeon 34113Republic of Korea

The conversion of methane to olefins,aromatics,and hydrogen(MTOAH)can be used to stably obtain hydrocarbons when the effect of the catalytic surface is optimized from the reaction engineering *** this study,Fe/Si C catalysts were packed into a quartz tube *** catalytic surfaces of Si C and the impregnated Fe species decreased the apparent activation energies(E_a)of methane consumption in the blank reactor between 965 and 1020℃.Consequently,the hydrocarbon yield increased by 2.4times at 1020℃.Based on the model reactions of ethane,ethylene,and acetylene mixed with hydrogen in the range of 500-1020℃,an excess amount of Fe in the reactor favored the C-C coupling reaction over the selective hydrogenation of acetylene;consequently,coke formation was favored over the hydrogenation *** gas-phase reactions and catalyst properties were optimized to increase hydrocarbon yields while reducing coke *** 0.2Fe catalyst-packed reactor(0.26 wt%Fe)resulted in a hydrocarbon yield of 7.1%and a coke selectivity of<2%when the ratio of the void space of the postcatalyst zone to the catalyst space was adjusted to be≥*** on these findings,the facile approach of decoupling the reaction zone between the catalyst surface and the gas-phase reaction can provide insights into catalytic reactor design,thereby facilitating the scale-up from the laboratory to the commercial scale.

关键词： Non-oxidative methane conversion Ethylene Aromatic Methane pyrolysis Fe/SiC Coke resistance Catalytic reactor

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AHSS welding using undermatching filler wires and process advantages with P-GMAW

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materials Today: Proceedings 2022年 49卷 1312-1318页

作者： Merbin John Ashok Kumar P Udaya Bhat K Department of Metallurgical and Materials Engineering National Institute of Technology Karnataka 575025 India R&D Division Tata Steel Ltd Jamshedpur 831007 India

关键词： AHSS P-GMAW HAZ Acicular ferrite Joint efficiency

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Effect of filler wire strength on high strength low alloy steels

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materials Today: Proceedings 2022年 49卷 1286-1293页

作者： Merbin John P. Ashok Kumar K. Udaya Bhat Department of Metallurgical and Materials Engineering National Institute of Technology Karnataka 575025 India R&D Division Tata Steel Ltd Jamshedpur 831007 India

Fusion welding of Ti-Nb microalloyed steels often leads to softening in the heat affected zone (HAZ) due to weld thermal cycles. Apart from heat input and width of HAZ, selection of filler wire also plays an important role, to achieve the minimum strength requirement of the parent material. Steel plates with 800 MPa ultimate tensile strength were butt welded using pulsed gas metal arc welding (P-GMAW) process, with undermatching, matching and overmatching strength filler wires. Welding parameters were selected in such a way that the heat input per unit weld length is almost constant. In all the samples, microstructural features were similar in the HAZ region. Static tensile tests indicated that failure in the samples welded using undermatching filler occurred at welded region, whereas the samples welded with matching and overmatching fillers failed at HAZ region. Further fracture studies indicated that, in case of under matching filler wire samples, crack propagates along the Widmanstatten ferrite present in the weld zone, whereas in other two samples, crack initiated at coarse TiN – matrix interface in the HAZ region. This study shows that overmatching fillers are recommended to overcome strength loss due to HAZ softening.

关键词： High strength low alloy steel Pulsed gas metal arc welding Weld microstructures Crack propagation

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dynamical Encircling of a Lock-In Area with a Combination of Fast and Slow dithering in a ring Laser Gyroscope

Dynamical Encircling of a Lock-In Area with a Combination of...

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2023 IEEE International Symposium on Inertial Sensors and Systems (INErTIAL)

作者： Woo-Seok Choi Jun-Eon An Cheon-Joong Kim Kyu-Min Shim The 1 R&D Institute 6th DIR. Agency for Defense Development Daejeon Republic of Korea Emerging Science and Technology DIR. Agency for Defense Development Daejeon Republic of Korea

This study proposes a combination of fast and slow dithering in a ring laser gyroscope (rLG) and analyzes the related characteristics through numerical experiments. The results of this study are significant compared to the existing methods that use sinusoidal dithering with a single frequency component. The results show that the proposed method can contribute to developing new alternatives for improving rLG performance when high static lock-in frequencies are considered.

关键词： Inertial sensors ring lasers Gyroscopes Nonlinear dynamical systems

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Moisture stable and ultrahigh-rate Ni/Mn-based sodium-ion battery cathodes via K^(+)decoration

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Nano research 2023年第5期16卷 6890-6902页

作者： Tao Yuan Yuanyuan Sun Siqing Li Haiying Che Qinfeng Zheng Yongjian Ni Yixiao Zhang Jie Zou Xiaoxian Zang Shi-Hao Wei Yuepeng Pang Shuixin Xia Shiyou Zheng Liwei Chen Zi-Feng Ma School of Materials and Chemistry University of Shanghai for Science and TechnologyShanghai 200093China Zhejiang Natrium Energy Co. Ltd.Shaoxing 312000China In-situ Center for Physical Sciences Shanghai Electrochemical Energy Device Research CenterFrontiers Science Center for Transformative MoleculesSchool of Chemistry and Chemical EngineeringShanghai Jiao Tong UniversityShanghai 200240China Faculty of Electrical Engineering and Computer Science Ningbo UniversityNingbo 315000China Key Laboratory of Solar Energy Utilization&Energy Saving Technology of Zhejiang Province Zhejiang Energy R&D Institute Co.Ltd.Hangzhou 311121China

As one of the most promising cathodes for sodium-ion batteries(SIBs),the layered transition metal oxides have attracted great attentions due to their high specific capacities and facile ***,their applications are still hindered by the problems of poor moisture stability and sluggish Na^(+)diffusion caused by intrinsic structural Jahn–Teller ***,we demonstrate a new approach to settle the above issues through introducing K^(+)into the structures of Ni/Mn-based *** physicochemical characterizations reveal that K^(+)induces atomic surface reorganization to form the birnessite-type K_(2)Mn_(4)O_(8).Combining with the phosphate,the mixed coating layer protects the cathodes from moisture and hinders metal dissolution into the electrolyte ***,K^(+)substitution at Na site in the bulk structure can not only widen the lattice-spacing for favoring Na^(+)diffusion,but also work as the rivet to restrain the grain crack upon *** as achieved K^(+)-decorated P2-Na_(0.67)Mn_(0.75)Ni_(0.2)5O_(2)(NKMNO@KM/KP)cathodes are tested in both coin cell and pouch cell configurations using Na metal or hard carbon(HC)as ***,the NKMNO@KM/KP||Na half-cell demonstrates a high rate performance of 50 C and outstanding cycling performance of 90.1%capacity retention after 100 cycles at 5 ***,the NKMNO@KM/KP||HC fullcell performed a promising energy density of 213.9 Wh·kg^(−1).This performance significantly outperforms most reported state-ofthe-art ***,by adopting this strategy on O3-NaMn_(0.5)Ni_(0.5)O_(2),we further proved the universality of this method on layered cathodes for SIBs.

关键词： sodium-ion battery cathode layered oxide material K^(+)decoration

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