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Additive manufacturing : materials, functionalities and applications / / Kun Zhou
| Additive manufacturing : materials, functionalities and applications / / Kun Zhou |
| Autore | Zhou Kun |
| Pubbl/distr/stampa | Cham, Switzerland : , : Springer International Publishing, , [2022] |
| Descrizione fisica | 1 online resource (334 pages) |
| Disciplina | 621.988 |
| Soggetto topico |
Additive manufacturing
Additive manufacturing - Data processing |
| ISBN |
9783031047213
9783031047206 |
| Formato | Materiale a stampa  |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Record Nr. | UNINA-9910624311603321 |
Zhou Kun
|
||
| Cham, Switzerland : , : Springer International Publishing, , [2022] | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. Federico II | ||
| ||
Additive Manufacturing Technology : Design, Optimization, and Modeling
| Additive Manufacturing Technology : Design, Optimization, and Modeling |
| Autore | Zhou Kun |
| Pubbl/distr/stampa | Newark : , : John Wiley & Sons, Incorporated, , 2022 |
| Descrizione fisica | 1 online resource (403 pages) |
| ISBN |
3-527-83393-5
3-527-83391-9 |
| Formato | Materiale a stampa |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Nota di contenuto |
Cover -- Title Page -- Copyright -- Contents -- Preface -- Chapter 1 Introduction to 4D Printing: Concepts and Material Systems -- 1.1 Background -- 1.2 Overview of 3D Printing Techniques -- 1.2.1 Single‐Material 3D Printing Techniques -- 1.2.2 Multi‐Material 3D Printing -- 1.3 Shape‐Programmable Materials for 4D Printing -- 1.3.1 Shape‐Memory Polymers and Composites -- 1.3.1.1 Single SMP -- 1.3.1.2 SMP Nanocomposites -- 1.3.1.3 Printed Active Fiber‐Reinforced Composites -- 1.3.1.4 Bilayer SMPs -- 1.3.1.5 Multi‐material SMPs -- 1.3.2 Hydrogels and Composites for 4D Printing -- 1.3.2.1 Single‐Material Hydrogels and Composites -- 1.3.2.2 Multi‐Material Hydrogels -- 1.3.3 Liquid Crystal Elastomers -- 1.3.3.1 Single‐Material LCEs -- 1.3.3.2 LCE‐Based Multi‐Materials -- 1.3.4 Magnetoactive Soft Materials -- 1.3.4.1 Single Magnetoactive Soft Material Composite -- 1.3.4.2 Multi‐material MSMs -- 1.4 Modeling‐Guided Design for 4D Printing -- 1.5 Summary and Outlook -- Acknowledgments -- References -- Chapter 2 Strategies in 3D Bioprinting of Cell‐Laden Bioinks -- 2.1 Introduction -- 2.2 Drop‐on‐Demand (DOD)‐Based Inkjet Printing -- 2.2.1 Introduction to Inkjet Printing -- 2.2.2 Droplet Formation During DOD Inkjetting of Cell‐laden Bioink -- 2.2.2.1 Bioink Preparation and Experimental Setup -- 2.2.2.2 Representative Droplet Formation Observations -- 2.2.3 Cell Distribution Within Microspheres During Inkjet‐Based Bioprinting -- 2.2.3.1 Effect of Cell Concentration on Cell Distribution -- 2.2.3.2 Effect of Polymer Concentration on Cell Distribution -- 2.2.3.3 Effect of Excitation Voltage on Cell Distribution -- 2.3 Laser Printing -- 2.3.1 Introduction to Laser Printing -- 2.3.2 Effects of Living Cells on the Bioink Printability -- 2.3.2.1 Representative Observations During Laser Printing of Cell‐laden Bioink.
2.3.2.2 Effects of Living Cells on Printing Dynamics and Jetting Behaviors -- 2.3.3 Freeform Drop‐on‐Demand Laser Printing of 3D Alginate and Cellular Constructs -- 2.3.3.1 Overhang Construct Fabrication -- 2.3.3.2 Bifurcated Alginate/Cellular Constructs -- 2.4 Support Bath‐Enabled Printing‐then‐Solidification Extrusion -- 2.4.1 Introduction to Support Bath‐Enabled 3D Printing -- 2.4.2 Printing‐then‐Solidification Extrusion of Alginate and Cellular Structures -- 2.4.2.1 Carbopol‐Enabled Two‐Step Gelation Approach -- 2.4.2.2 3D Bioprinting of Y‐Shaped Tubular Structures -- 2.4.3 Printing‐then‐Solidification of Liquid Materials in Nanoclay Suspension -- 2.4.3.1 Laponite Utilized as the Support Bath Material for Extrusion Printing -- 2.4.3.2 Gelatin‐Based Cellular Construct Fabrication -- 2.5 Continuous Precuring Digital Light Processing (DLP) Printing -- 2.5.1 Introduction to DLP Printing -- 2.5.2 Theoretical Prediction of DLP Working Curve for Photocurable Materials -- 2.5.2.1 Analytical Model of Jacobs Working Curve -- 2.5.2.2 Influence of UV Absorber Concentration -- 2.5.3 Pre‐curing Digital Light Processing (DLP) Printing -- 2.5.3.1 The Tunable Pre‐curing DLP Printing Approach -- 2.5.3.2 Improving DLP Printing Efficiency by Pre‐curing DLP Printing -- 2.5.3.3 Validation of Pre‐curing DLP Printing -- 2.6 Summary -- References -- Chapter 3 Alloy Design for Metal Additive Manufacturing -- 3.1 Additive Manufacturing -- 3.1.1 Metal‐Based Additive Manufacturing -- 3.1.2 Alloy Development -- 3.1.3 Available Alloys -- 3.1.3.1 Ti-6Al-4V -- 3.1.3.2 Superalloys -- 3.1.3.3 316L Stainless Steel -- 3.1.3.4 AlSi10Mg -- 3.2 Melting and Cooling Processes and Associated Defects -- 3.2.1 The Process -- 3.2.2 Defects -- 3.2.2.1 Solidification Cracks -- 3.2.2.2 Liquation Cracks -- 3.2.2.3 Solid‐State Cracking and Residual Stress -- 3.2.2.4 Lack‐of‐Fusion Porosity. 3.2.2.5 Gas Pores -- 3.2.2.6 Keyhole Porosity -- 3.2.2.7 Compositional Changes -- 3.2.2.8 Balling -- 3.2.2.9 Summary -- 3.2.3 Roles of Material Chemical-Physical Properties -- 3.2.3.1 Absorptivity/Backscattering Coefficient -- 3.2.3.2 Heat Capacity and Enthalpy of Melting -- 3.2.3.3 Thermal Conductivity -- 3.2.3.4 Surface Tension -- 3.2.3.5 Boiling Temperature and Volatility -- 3.2.3.6 Thermal Expansion and Contraction -- 3.3 Alloy Design Methodology -- 3.3.1 Keyhole Formation -- 3.3.2 Evaporation of Alloying Elements -- 3.3.3 Balling Defects -- 3.3.4 Solidification Cracking Models -- 3.3.5 Solid‐State Defects -- 3.3.6 Modifications to Solidification Behavior -- 3.3.7 Examples of Alloy Design for Additive Manufacturing -- 3.3.7.1 Titanium Alloy for Medical Applications -- 3.3.7.2 Creep‐Resistant Ni‐Based Superalloy -- 3.3.7.3 High Strength Co‐Based Superalloy for High‐Temperature Applications -- 3.4 Summary -- Abbreviations -- References -- Chapter 4 Laser and Arc‐Based Methods for Additive Manufacturing of Multiple Material Components - From Design to Manufacture -- 4.1 Background -- 4.2 MMAM components design -- 4.3 Multi‐material L‐DED -- 4.3.1 Introduction of L‐DED -- 4.3.2 Material Feeding Mechanism in Multi‐Material L‐DED -- 4.3.2.1 Continuous Coaxial Powder Feeding -- 4.3.2.2 Discrete Coaxial Powder Feeding -- 4.3.2.3 Simultaneous Wire and Powder Feeding -- 4.3.3 Materials and Characteristics in Multi‐Material L‐DED -- 4.3.3.1 L‐DED of Ni‐Cu Bimetal -- 4.3.3.2 L‐DED of Ni-SS Bimetal -- 4.3.3.3 L‐DED of Ti-Al Bimetal -- 4.3.3.4 L‐DED of Ti‐Ni FGM and Ti-SS FGM with Diffusion Barrier Layers -- 4.3.3.5 L‐DED of Fe-Cu Bimetal -- 4.3.3.6 L‐DED of Ti‐ceramic Material System -- 4.4 Multi‐material L‐PBF -- 4.4.1 Introduction of L‐PBF -- 4.4.2 Material Deposition Mechanism in Multi‐Material L‐PBF -- 4.4.2.1 Unidirectional Material Composition Variation. 4.4.2.2 Spatial material composition variation -- 4.4.2.3 Hybrid Methods for Discrete Powder Deposition -- 4.4.3 Materials and Characteristics in Multi‐Material L‐PBF -- 4.4.3.1 L‐PBF of Multiple Metallic Materials -- 4.4.3.2 L‐PBF of Hybrid Metal/Ceramic Materials -- 4.4.3.3 L‐PBF of Hybrid Metal/Polymer Materials -- 4.4.3.4 Modeling and Simulation of Multi‐Material L‐PBF Processes -- 4.5 Multi‐Material WAAM -- 4.5.1 Introduction of Multi‐Material WAAM -- 4.5.2 Material Feeding Mechanism of Multi‐Material WAAM -- 4.5.3 Materials and Characteristics in Multi‐Material WAAM -- 4.5.3.1 WAAM of SS-Fe/SS Bimetals -- 4.5.3.2 WAAM of SS-Ni Bimetals -- 4.5.3.3 WAAM of Ti-Al Bimetals -- 4.5.3.4 WAAM of Fe-Al Bimetals -- 4.5.3.5 WAAM of Fe-Ni Bimetals -- 4.5.3.6 WAAM of Cu‐involved Multi‐Metals -- 4.6 Comparison of Multi‐Material AM Technologies -- 4.7 Potential Applications of Multi‐Material AM -- 4.8 Challenges of Multi‐Material AM Technologies -- 4.8.1 Challenges in Multi‐Material L‐DED and L‐PBF -- 4.8.2 Challenges in Multi‐Material WAAM -- 4.9 Summary and Outlook -- 4.9.1 Summary -- 4.9.2 Outlook -- References -- Chapter 5 Modified Inherent Strain Method for Predicting Residual Deformation and Stress in Metal Additive Manufacturing -- 5.1 Background -- 5.2 Modified Inherent Strain (MIS) Method -- 5.2.1 Theory for Modification -- 5.2.2 Remarks on the IS Method -- 5.3 Extraction of ISs for L‐PBF Process -- 5.4 Governing Equations for MIS‐Based Sequential Analysis -- 5.5 Experimental Validation: Double Cantilever Beam -- 5.6 Simulation‐Driven Design for L‐PBF Process -- 5.6.1 Support Structure Selection for Crack Prevention -- 5.6.1.1 Description of the Workflow -- 5.6.1.2 Determination of the Critical J‐Integral for Solid/Support Interface -- 5.6.1.3 Calculation of J‐Integral at Solid/Support Interface for as‐Built Part. 5.6.2 Support Structure Design Based on Topology Optimization -- 5.6.2.1 Description of the Workflow -- 5.6.2.2 Topology Optimization of the Support Structure -- 5.6.2.3 Residual Stress Estimation -- 5.6.3 Laser Scanning Path Design -- 5.6.3.1 Description of the Method -- 5.7 Summary and Outlook -- Acknowledgment -- References -- Chapter 6 High‐Fidelity Modeling of Metal Additive Manufacturing -- 6.1 Background -- 6.2 Powder Spreading -- 6.2.1 Governing Equations -- 6.2.2 Model Validation -- 6.2.3 Spreading and Deposition Mechanisms -- 6.2.3.1 Rake‐Type Powder Spreading -- 6.2.3.2 Roller‐Type Powder Spreading -- 6.2.4 Guidance for Design and Optimization -- 6.2.5 Summary and Outlook -- 6.3 Powder Melting -- 6.3.1 Governing Equations -- 6.3.2 Heat Source Models -- 6.3.2.1 Heat Source Model of Laser Beam -- 6.3.2.2 Heat Source Model of Electron Beam -- 6.3.3 Evaporation and Recoil Pressure -- 6.3.3.1 Evaporation Model -- 6.3.3.2 Model of Flow in Common and Near‐Vacuum Environments -- 6.3.4 Model Verification and Validation -- 6.3.4.1 Realistic Heat Inputs -- 6.3.4.2 Keyhole Shape and Dynamics -- 6.3.4.3 Molten Track Profile -- 6.3.5 Coupling with Powder Spreading Model -- 6.3.5.1 Single‐Track Cases -- 6.3.5.2 Balling Phenomenon -- 6.3.5.3 Multi‐Track Cases -- 6.3.5.4 Multilayer Cases -- 6.3.6 Porosity Reduction and Optimization -- 6.3.7 Summary and Outlook -- 6.4 Thermal Stress -- 6.4.1 Model Construction -- 6.4.2 Simulation Case -- 6.4.3 Stress Concentrations -- 6.4.4 Model Comparison and Application -- 6.4.4.1 Thermomechanical Model for Cross Comparison -- 6.4.4.2 Thermal Cracking -- 6.4.4.3 Thermal Stress‐Induced Dislocation -- 6.4.5 Mitigation and Tailoring of Thermal Stress -- 6.4.6 Summary and Outlook -- 6.5 Modeling of Other Unique Phenomena -- 6.5.1 Powder Sintering in EB‐PBF -- 6.5.1.1 Liquid‐State Sintering -- 6.5.1.2 Phase‐Field Model. 6.5.1.3 Solid‐State Sintering. |
| Record Nr. | UNINA-9910646199303321 |
|
Zhou Kun
|
||
| Newark : , : John Wiley & Sons, Incorporated, , 2022 | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. Federico II | ||
| ||
Computational and Experimental Simulations in Engineering : Proceedings of ICCES 2024—Volume 3 / / edited by Kun Zhou
| Computational and Experimental Simulations in Engineering : Proceedings of ICCES 2024—Volume 3 / / edited by Kun Zhou |
| Autore | Zhou Kun |
| Edizione | [1st ed. 2025.] |
| Pubbl/distr/stampa | Cham : , : Springer Nature Switzerland : , : Imprint : Springer, , 2025 |
| Descrizione fisica | 1 online resource (1238 pages) |
| Disciplina | 620.00151 |
| Collana | Mechanisms and Machine Science |
| Soggetto topico |
Mechanical engineering
Mathematics - Data processing Mechanical Engineering Computational Science and Engineering |
| ISBN |
9783031816734
3031816730 |
| Formato | Materiale a stampa |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Nota di contenuto | Accumulation and Energy Characteristics in Debris Flow -- The Influence of Design Parameters of Fracturing Section on Fault Slip Probability in Multi-Stage Fracturing Process -- Effect of Cr/DLC Film on Corrosion Resistance of Mg-Gd-Y Alloy -- Prediction of Weld Bead Cross Section in WAAM Based on CNN -- Development of C. Albican Anti-Attachment Inkjet 3D Printing Ink, via High Throughput Screening -- Applicability Analysis and Influencing Factors of Mogi-Coulomb Rock Strength Criterion. |
| Record Nr. | UNINA-9910983041203321 |
|
Zhou Kun
|
||
| Cham : , : Springer Nature Switzerland : , : Imprint : Springer, , 2025 | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. Federico II | ||
| ||
Computational and Experimental Simulations in Engineering : Proceedings of ICCES 2024—Volume 2 / / edited by Kun Zhou
| Computational and Experimental Simulations in Engineering : Proceedings of ICCES 2024—Volume 2 / / edited by Kun Zhou |
| Autore | Zhou Kun |
| Edizione | [1st ed. 2025.] |
| Pubbl/distr/stampa | Cham : , : Springer Nature Switzerland : , : Imprint : Springer, , 2025 |
| Descrizione fisica | 1 online resource (1040 pages) |
| Disciplina | 620.00151 |
| Collana | Mechanisms and Machine Science |
| Soggetto topico |
Mechanical engineering
Mathematics - Data processing Mechanics, Applied Mechanical Engineering Computational Science and Engineering Engineering Mechanics |
| ISBN |
9783031774898
3031774892 |
| Formato | Materiale a stampa |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Record Nr. | UNINA-9910983062003321 |
|
Zhou Kun
|
||
| Cham : , : Springer Nature Switzerland : , : Imprint : Springer, , 2025 | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. Federico II | ||
| ||
Computational and Experimental Simulations in Engineering : Proceedings of ICCES 2024—Volume 1 / / edited by Kun Zhou
| Computational and Experimental Simulations in Engineering : Proceedings of ICCES 2024—Volume 1 / / edited by Kun Zhou |
| Autore | Zhou Kun |
| Edizione | [1st ed. 2024.] |
| Pubbl/distr/stampa | Cham : , : Springer Nature Switzerland : , : Imprint : Springer, , 2024 |
| Descrizione fisica | 1 online resource (1074 pages) |
| Disciplina | 621 |
| Collana | Mechanisms and Machine Science |
| Soggetto topico |
Mechanical engineering
Mathematics - Data processing Mechanics, Applied Mechanical Engineering Computational Science and Engineering Engineering Mechanics |
| ISBN |
9783031687754
9783031687747 |
| Formato | Materiale a stampa |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Nota di contenuto |
Intro -- Contents -- Computing Vibration Eigenmodes in Piezoelectric Ceramic Resonators Discretized by the Energy-Orthogonal Fifteen-Nodes Pentahedral Finite Element -- 1 Introduction -- 1.1 Finite Element Formulation -- 2 Dispersion Analysis -- 2.1 Characteristic Equations -- 2.2 Dispersion Equations -- 2.3 Energy at the Unit Cell -- 2.4 Numerical Research -- 3 Vibration Eigenmodes -- 3.1 Numerical Research -- Appendix -- References -- Shape Effects of 3D MHD Mass-Based Hybrid Nanofluids -- 1 Introduction -- 2 Mathematical Model -- 3 Results Analysis -- 4 Conclusions -- References -- Influence of Roughness on Flow Characteristics and Resistance in Cone-Straight Nozzle -- 1 Introduction -- 2 Effect of Roughness on Flow in the Nozzle -- 2.1 Geometry Model -- 2.2 Mesh -- 2.3 Model Validation -- 2.4 Boundary Conditions -- 2.5 Results and Discussions -- 3 Flow Characteristics in Riblet -- 3.1 Simulations -- 3.2 Drag Reduction Mechanism of Riblet -- 4 Conclusions -- 5 Declaration of Interest Statement -- References -- Characterization and Optimization Methods for Energy Consumption in Low-Permeability Reservoir Fracturing Reconstruction -- 1 Introduction -- 2 Research Methodology and Process -- 2.1 Energy Consumption Characterization Method -- 2.2 Energy Efficiency Optimization Simulation Method -- 2.3 Pressure Drop Calculation Model -- 3 Establishment of 3D Model of Work Area -- 3.1 Effect of Engineering Conditions on Fracture Parameters and Productivity -- 3.2 Prediction Equation for Post-Press Productivity and Crack Morphology -- 4 Application Analysis of Energy Efficiency Evaluation of Fracturing Transformation System -- 4.1 Conclusion -- References -- Structure Parameters Optimization and Feasibility Tests of the Organ-Pipe Nozzle to Improve Near-Wellbore Reservoir Permeability -- 1 Introduction.
2 Methods of Structure Optimization and Feasibility Test to Improve the Permeability of Organ-Pipe Nozzle -- 2.1 Structure Optimization of Hydraulic Cavitation Generator -- 2.2 Mixture Model for Multiphase Flow -- 2.3 Cavitation Model -- 2.4 RNG k - ε Turbulence Model -- 2.5 Physical Model -- 3 Permeability-Improving Feasibility Test System and Method -- 4 Results and Analysis -- 4.1 Numerical Calculation Results and Analysis -- 5 Design of Organ-Pipe Nozzle -- 6 Feasibility Test Results and Analysis -- 7 Conclusions -- References -- Performance Study of Variational Quantum Linear Solver for Linear Elastic Problems -- 1 Introduction -- 2 Methodology -- 2.1 Linear Elastic Problem -- 2.2 Finite Element Discretization -- 2.3 Variational Quantum Linear Solver (VQLS) -- 3 Numerical Examples -- 3.1 Example 1 -- 3.2 Example 2 -- 4 Conclusions and Discussions -- References -- Effect of Downhole Electrode Length on Active Magnetic Ranging Technique for Relief Wells -- 1 Introduction -- 2 Active Magnetic Ranging Principle -- 3 Experiments and Numerical Analysis Under Active Magnetic Ranging Conditions -- 4 Impact and Insertion Capability Analysis for Electrode Length -- 5 Conclusions -- References -- Calculation and Analysis of Drag and Torque for Drill String Considering the Effect of Cuttings in Extended-Reach Drilling -- 1 Introduction -- 2 Modified Drag and Torque Model -- 2.1 Pipe-Cuttings Contact Stress -- 2.2 Drag and Torque Model -- 3 Mathematical Expression of the Pipe-Cuttings Contact Stress -- 4 Case Study -- 5 Conclusions -- References -- WeChat User Geolocation Method Based on Probe Deployment Optimization and the User Order -- 1 Introduction -- 2 Related Work -- 3 Proposed Method -- 3.1 Data Collection -- 3.2 Definition of Terms and Symbols -- 3.3 Overview of the Proposed Method -- 3.4 Target User Discovery -- 3.5 Target User Geolocation. 4 Experiment -- 4.1 Experimental Settings -- 4.2 Determining Probe Path Planning Parameters -- 4.3 Comparative Analysis of Target Discovery Efficiency -- 4.4 Comparative Analysis of Geolocation Efficiency and Accuracy -- 5 Conclusion -- References -- Social User Geolocation Method Based on POI Location Feature Enhancement in Context -- 1 Introduction -- 2 Related Work -- 2.1 Text-Based Methods -- 2.2 Network-Based Methods -- 2.3 Hybrid Methods -- 3 Symbol Definition and Problem Description -- 4 Proposed Method -- 4.1 Identification of POI in User Generated Text -- 4.2 Filtering of Geographic Location Words and Construction of POI-Location Library -- 4.3 User Feature Location Enhancement Algorithm Combining POI Library and Context -- 4.4 Evaluation Algorithm of Social User Geolocation Effect -- 5 Experiment and Analysis -- 5.1 Experimental Data -- 5.2 Experimental Settings -- 5.3 Experimental Results of Different Types of Text on the Spatial Distribution of POI Word Vectors -- 5.4 The Impact of Combining a POI Library with Contextual Semantic Information -- 5.5 Comparative Experiment Results of Location Inference -- 6 Conclusions and Future Work -- References -- Finite Element Modelling and Life Prediction of Solder Joints of Board Level Devices Under Power Cyclic Load -- 1 Introduction -- 2 Mathematical Model -- 2.1 Geometric Model and Size Information -- 2.2 Power Cycle Load and Boundary Conditions -- 2.3 Constitutive Model and Thermo-Mechanical Coupling Model -- 2.4 Life Prediction Model -- 3 Results and Discussion -- 3.1 Temperature-Strain Analysis of Board-Level Power Cycling Load -- 3.2 Life Prediction of Board-Level Solder Joints Under Power Cycling -- 4 Conclusion -- References -- Study on the Influence of Turning Parameters on the Failure Probability of Life-Limited Parts -- 1 Introduction -- 2 Turning Simulation Method and Validation. 2.1 Turning Simulation Method -- 2.2 Validation of Turning Simulation Method -- 3 Probabilistic Failure Risk Analysis Method Considering Turning Residual Stress -- 3.1 Test Model -- 3.2 Initial Anomaly Distribution and Random Sampling -- 3.3 Crack Propagation Analysis -- 3.4 Failure Risk Analysis -- 4 Results and Discussion -- 4.1 Influence of Cutting Speed on Residual Stress and Failure Probability -- 4.2 Influence of Feed Rate on Residual Stress and Failure Probability -- 5 Conclusion -- References -- An Image Segmentation Algorithm for Extracting Melt Pool Parameters in Wire Arc Additive Manufacturing -- 1 Introduction -- 2 Methodology -- 2.1 Otsu Image Segmentation Based on Genetic Algorithm Optimization -- 2.2 SASR-BiSeNet Model -- 3 Experiments and Results -- 3.1 Image Data Acquisition -- 3.2 GA-Otsu Separation -- 3.3 ES-BiseNet Training and Segmentation -- 3.4 Experimental Measurement -- 4 Conclusions -- References -- The Dual Reciprocal B-Spline Wavelet Boundary Element Method for Non-homogeneous Potential Problems -- 1 Introduction -- 2 The B-Spline Wavelet on the Interval -- 2.1 Scaling Functions -- 2.2 Function Approximation -- 3 Problem Description -- 3.1 2D Non-homogeneous Potential Problem's Governing Function -- 4 Handling Domain Integrals and Discretizing Integral Equations -- 4.1 Approximation the Domain-Integrals Using DRM -- 5 Numerical Example -- 5.1 Results for Different B -- 6 Conclusions -- References -- Numerical Analysis of Dynamics of Unbonded Flexible Riser Carrying Slug Flows -- 1 Introduction -- 2 Methodology -- 2.1 Axis-Symmetric Model -- 2.2 Nonlinear Bending Model -- 2.3 VFIFE Model -- 2.4 Riser-Seabed Interaction -- 3 Results and Discussion -- 3.1 Model Validation -- 3.2 Sensitivity Analysis -- 3.3 Global Dynamic Analysis -- 4 Conclusions -- References. Trapped Annular Pressure Caused by Thermal Expansion Between Double Packers in Ultra-Deep Wells -- 1 Introduction -- 2 Trapped Annular Pressure Between Double Packers -- 2.1 Mechanism of Trapped Annular Pressure -- 2.2 Calculation Model of Trapper Annular Pressure -- 2.3 Model Solution -- 3 Example Application -- 3.1 Basic Information -- 3.2 Annular Pressure Analysis -- 4 Conclusions -- References -- Geological Line Selection in Karst and Dangerous Rock Falling Area of Daba Mountain District Railway - A Case Study on the Scheme of Both Sides of Qianhe River in Xi'an-Chongqing High-Speed Railway -- 1 Project Overview -- 1.1 Topography and Landforms -- 1.2 Stratum Lithology -- 1.3 Geological Structure -- 1.4 Hydrogeological Conditions -- 2 Project Study -- 2.1 Plan Composition -- 2.2 Comparison of Engineering Conditions in the Scheme -- 2.3 Analysis of Dangerous Rocks and Rockfalls at Key Bridge Sites -- 2.4 Analysis of Advantages and Disadvantages of the Plan -- 3 Conclusion -- References -- Cyclic Entropy Generation Rate to Signify the Fatigue Failure in Elevated-Temperature Crack Propagation of GH4169 Superalloy -- 1 Introduction -- 2 Theory and Formulation -- 2.1 Basic Theory of Thermodynamic Entropy -- 2.2 Formulation of Entropy Generation Rate -- 2.3 Crack Propagation Rate at Elevated Temperature -- 3 Numerical Simulation Method -- 3.1 Simulation Model -- 3.2 Simulation Settings -- 3.3 Material Properties -- 4 Results and Discussion -- 5 Cyclic Entropy Generation Rate to Signify Fatigue Failure -- 6 Conclusion -- References -- Experimental Analysis on Thermal Performance of Radially Rotating Heat Pipes at Different Filling Ratios -- 1 Introduction -- 2 Experimental Setup and Procedure -- 2.1 Radially Rotating Heat Pipes -- 2.2 Experimental Setup -- 2.3 Experimental Procedure -- 3 Results and Discussions -- 3.1 Thermal Resistance Analysis. 3.2 Geyser Boiling Phenomenon at High Filling Ratio. |
| Record Nr. | UNINA-9910881100003321 |
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Zhou Kun
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| Cham : , : Springer Nature Switzerland : , : Imprint : Springer, , 2024 | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. Federico II | ||
| ||