Article
Chemistry, Physical
Marcel Kuruc, Tomas Vopat, Jozef Peterka, Martin Necpal, Vladimir Simna, Jan Milde, Frantisek Jurina
Summary: This paper discusses the effects of cutting zone and chip compression on the efficiency of the cutting process. The results show that chip compression and plastic deformation play a crucial role in determining the effectiveness of the cutting process. Cutting speed and feed rate have an impact on the deformation, and the microstructure of the cutting zone is also affected.
Article
Engineering, Civil
Jianjun Zhang, Dora Karagiozova, Guoxing Lu, Pengwan Chen
Summary: This work investigates the large, plastic deformation and energy absorption characteristics of zig-zag folded metamaterials BCHn under quasi-static compression, using analytical and numerical methods. The zig-zag folded materials outperform Miura-ori based materials in energy absorption, and their tunable geometric parameters allow better tailoring of mechanical properties. Comparisons with hexagonal honeycomb materials show that selecting parameters of the BCHn materials can result in superior energy absorption characteristics.
THIN-WALLED STRUCTURES
(2021)
Article
Engineering, Manufacturing
Zahra Barzegar, Emre Ozlu
Summary: This study introduces a novel model for predicting temperature in a cutting tool while considering the effects of all three deformation zones. The model uses a thermo-mechanical approach with a dual-zone friction model and Johnson-Cook constitutive model. Experimental results show good agreement between the model predictions and actual temperatures.
JOURNAL OF MANUFACTURING PROCESSES
(2021)
Article
Materials Science, Ceramics
Marion Hoefling, Maximilian Trapp, Lukas Porz, Hana Ursic, Enrico Bruder, Hans-Joachim Kleebe, Jurgen Roedel, Jurij Koruza
Summary: The study of ferroelectric material KNbO3 reveals that increased dislocation density results in decreased ferroelectric domain size, with dislocation motion mainly dominated by the kink-pair mechanism. Dislocations have an impact on domain nucleation and mobility.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Multidisciplinary
Anibal Faruk Abedrabbo, Juan Camilo Osorio, Sepideh Abolghasem, Carlos Valencia, Fabio Rojas
Summary: In this study, microstructure transformations during severe shear deformation induced by large strain machining experiments are examined. Through parameterization and prediction methods, opportunities for creating multifunctional surface microstructure in various machining manufacturing processes are identified.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Kostiantyn Svirzhevskyi, Oleg Zabolotnyi, Jose Machado, Anatolii Tkachuk, Inna Boiarska
Summary: Surface plastic deformation is a productive method that produces products with unique operational properties, such as high quality surface layer and increased support stability. It involves using a tool with regulated geometric characteristics to penetrate and deform the surface layer of the workpiece. This article explores the use of carbide-cutting plates as deforming elements and presents a morphological table for their spatial orientation. The contact interaction between the indenter plate and the workpiece is studied, and rational installation angles for the deforming element are determined based on morphological analysis and applied studies.
APPLIED SCIENCES-BASEL
(2023)
Article
Engineering, Manufacturing
Muralimohan Gurusamy, Balkrishna C. Rao
Summary: In this study, a modified Zerilli-Armstrong model was used to simulate the behavior of face-centered cubic materials during severe plastic deformation, and its validity was further confirmed. The model performed well in predicting flow stress distribution and cutting forces, outperforming other models. These findings have implications for simulating the behavior of face-centered cubic materials under conditions of high plastic strains and strain-rates.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART B-JOURNAL OF ENGINEERING MANUFACTURE
(2022)
Article
Physics, Applied
J. E. Hammerberg, R. Ravelo, J. Milhans, T. C. Germann
Summary: This study uses large-scale non-equilibrium molecular dynamics simulations to investigate the steady-state frictional force at different velocities during metal sliding. The results reveal various physical mechanisms that influence the frictional force, including grain growth and refinement, evolution of plastic strains and strain rates, material mixing, and melting. These mechanisms can be applied to macroscopic continua.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Computer Science, Software Engineering
Bohan Wang, George Matcuk, Jernej Barbic
Summary: The method presented in the study successfully models shapes undergoing large and/or anisotropic strains using plastic strains and the finite element method, with sparse point constraints on the object's boundary. Compared to standard methods, the proposed method avoids spikiness, wiggliness, and other artifacts in shape deformation.
ACM TRANSACTIONS ON GRAPHICS
(2021)
Article
Automation & Control Systems
Danilo Ambrosio, Vincent Wagner, Amevi Tongne, Gilles Dessein, Olivier Cahuc
Summary: Damage laws for numerical simulation are typically based on mechanical testing, which may not accurately represent extreme manufacturing conditions. Orthogonal cutting provides a better representation of material plastic behavior, as it involves compressive and shearing actions on the workpiece during material removal. This approach is used to develop a virtual frictional resistance damage evolution law, which accurately describes chip generation mechanisms and is further applied to friction stir welding for improved material flow simulation.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2023)
Article
Chemistry, Physical
Ahmed A. Tiamiyu, Edward L. Pang, Xi Chen, James M. LeBeau, Keith A. Nelson, Christopher A. Schuh
Summary: Nanotwinning-assisted dynamic recrystallization is shown to facilitate grain refinement to the nanoscale at high strains and strain rates, providing a pathway to the finest nanocrystalline grain sizes through extreme straining processes.
Article
Engineering, Manufacturing
Chris Dredge, Rachid M'Saoubi, Ben Thomas, Oliver Hatt, Meurig Thomas, Martin Jackson
Summary: The machining of titanium alloy components is often the most expensive manufacturing process step, and it is crucial to develop rapid, low-cost methods to assess the machinability of titanium alloys and cutting tool combinations for future developments.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART B-JOURNAL OF ENGINEERING MANUFACTURE
(2021)
Article
Chemistry, Multidisciplinary
Hongsong Han, WenLi Ye, Feng Zhang, Dasheng Zhu, Yufan Shen, Xusheng Xiong
Summary: In this article, the impact of uncertain factors, such as cutting tool material, on the surface strength of manufactured materials in nano-cutting is studied using molecular dynamics simulations. Three different cutting factors, including cutting tool size, cutting angle, and cutting tool shape, are considered. Results show that a larger cutting tool leads to more plastic deformation and higher average tangential forces within the NC Cu-Ag alloy, while the cutting angle affects the dislocation domain and chip volume. This study provides a theoretical basis for the design of nano-cutting workmanship to achieve suitable mechanical properties.
JOURNAL OF NANOPARTICLE RESEARCH
(2023)
Article
Materials Science, Multidisciplinary
Jonathan Lind, Matthew D. Nelms, Andrew K. Robinson, Mukul Kumar, Nathan R. Barton
Summary: The article presents a new experimental test based on plate impact, using in situ X-ray imaging to observe material response at high strain rates. The closure of the hole is measured through multiple frames imaging, providing unique data regarding plastic response. Experimental results are compared with predictions from direct numerical simulations, offering information about high-rate hardening behavior.
Article
Chemistry, Physical
Junfeng Cui, Qilong Yuan, Wei Wang, Guoxin Chen, Peiling Ke, Wenrui Zhang, Kazuhito Nishimura, Nan Jiang
Summary: In this study, epsilon-Ga2O3 thin films with columnar crystals and partial unoccupied Ga sites were synthesized, and it was found that the submicron-scale epsilon-Ga2O3 could withstand an ultra-large plastic strain without cracking. This discovery has important implications for the applications of Ga2O3 in micro- or nano-electronic and optoelectronic devices.
Article
Nanoscience & Nanotechnology
M. Brown, P. Crawforth, R. M'Saoubi, T. Larsson, B. Wynne, A. Mantle, H. Ghadbeigi
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2019)
Article
Materials Science, Multidisciplinary
M. Brown, D. Pieris, D. Wright, P. Crawforth, R. M'Saoubi, J. McGourlay, A. Mantle, R. Patel, R. J. Smith, H. Ghadbeigi
Summary: This study introduces a novel non-destructive inspection method for detecting machining-induced white layers, utilizing grain size-sensitive and crystallographic texture-sensitive techniques. X-ray diffraction and spatially resolved acoustic spectroscopy are effective methods for detecting white layers.
MATERIALS & DESIGN
(2021)
Article
Chemistry, Physical
Hadi Jahangiri, Samira Mohagheghi, Armin Asghari Alamdari, Rifat Yilmaz, Kubra Gurcan Bayrak, Feng Yu, Hassan Ghadbeigi, Erhan Ayas, Amir Motallebzadeh
Summary: Light-weight high entropy alloys (LWHEAs) are equiatomic or near-equiatomic alloys consisting of at least five elements, designed with low-density elements like Al and Ti to achieve reduced overall density and improved mechanical properties. A new LWHEAs alloy (Al2CrFeMnTi) has been successfully synthesized with a multiphase microstructure, high hardness, and some level of ductility observed before failure, potentially linked to the minimal strain hardening of the BCC phase and the formation of ultra-fine L-21 precipitates within the BCC phase.
Article
Engineering, Industrial
M. Brown, R. M'Saoubi, P. Crawforth, A. Mantle, J. McGourlay, H. Ghadbeigi
Summary: The research assessed the impact of an orthogonal milling process on white layer formation and plastic strain distribution, finding that white layers were formed through severe plastic deformation mechanisms, with greater measured strains and depth of plastically deformed material occurring at lower cutting speeds, during climb milling, and when using a larger cutting edge radius and tool flank wear land.
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2022)
Article
Engineering, Manufacturing
Joshua Priest, Hassan Ghadbeigi, Sabino Avar-Soberanis, Stefanos Gerardis
Summary: A comprehensive benchmarking study was conducted to evaluate the influence of mesh formulation and chip separation methods on the finite element modeling of large diameter drilling operations. The study found that the updated-Lagrangian with dynamic re-meshing method provided the most accurate predictions, while the Coupled Eulerian-Lagrangian method under-predicted drilling thrust force and torque. The method with element deletion was not recommended due to numerical instabilities and computational costs.
CIRP JOURNAL OF MANUFACTURING SCIENCE AND TECHNOLOGY
(2021)
Article
Engineering, Manufacturing
Marius Monoranu, Ria L. Mitchell, Kevin Kerrigan, J. Patrick A. Fairclough, Hassan Ghadbeigi
Summary: The study investigated the effect of particle reinforcements on chip formation and machining induced damage in CFRPs, by modifying the epoxy matrix with silica nanoparticles and rubber microparticles. The presence of particulate fillers affected the chip formation process, with different particle types and concentrations resulting in varying cutting forces and surface metrics. Rubber modified samples showed the least subsurface damage, followed by samples with silica particles and unmodified epoxy samples.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2022)
Article
Engineering, Mechanical
Manuel Carrera, Alejandro S. Cruces, Joseph F. Kelleher, Yee-Han Tai, John R. Yates, Philip J. Withers, Pablo Lopez-Crespo
Summary: This paper presents a new methodology for characterizing the plastic zone ahead of a fatigue crack, using experimental data and elastic strain maps to identify the size and shape of the plastic zone.
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
(2022)
Article
Engineering, Mechanical
Sam Ashworth, J. Patrick A. Fairclough, James Meredith, Yoshihiro Takikawa, Kevin Kerrigan
Summary: This research investigates the impact of tool wear on the static flexural strength of carbon fibre reinforced polymer (CFRP) machining. The study finds that the cutting mechanism changes and the surface metrics degrade for an uncoated tool, while the coated tool shows limited changes within a certain range. Tool wear during edge trimming of CFRP using an uncoated carbide tool directly results in a reduction in flexural strength.
Article
Engineering, Manufacturing
Nikita Pietrow, David Curtis, Donka Novovic, Jamie McGourlay, Hassan Ghadbeigi
Summary: This study characterized the 3D topography evolution of single-layer cubic boron nitride (cBN) point grinding tools using focus-variation imaging, and used a decision-matrix methodology to identify the most important parameters for monitoring the wear condition of the tools. The best criteria for characterizing the surface texture of electroplated cBN point grinding tool surfaces were also identified, paving the way for on-machine monitoring of tool performance using this imaging technique under manufacturing conditions.
JOURNAL OF MANUFACTURING SCIENCE AND ENGINEERING-TRANSACTIONS OF THE ASME
(2022)
Editorial Material
Engineering, Mechanical
John Yates, Filippo Berto, Martin Bache, Spencer Jeffs
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
(2023)
Article
Materials Science, Multidisciplinary
S. Pedrazzini, M. E. Pek, A. K. Ackerman, Q. Cheng, H. Ali, H. Ghadbeigi, K. Mumtaz, T. Dessolier, T. B. Britton, P. Bajaj, E. Jaegle, B. Gault, A. J. London, E. Galindo-Nava
Summary: This study investigates the effect of temperature on additive manufacturing process of Ti-6Al-4V alloy using laser powder bed fusion. Results show that there is an initial increase in ductility when the temperature is raised to 570 degrees C, followed by a significant decrease at 770 degrees C. Microstructural analysis reveals significant differences across the temperature range, with different phases and segregation of alloying elements observed. It is recommended to perform building operations at temperatures below the sub-transus range and control the build atmosphere to reduce oxygen uptake.
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Xiao Chen, Han Wu, Jason D. Ede, Geraint W. Jewell, Luke M. Jones, Hassan Ghadbeigi
Summary: Laser cutting is commonly used for manufacturing electrical machine stator cores, but it can cause localized damage in electrical steels. This paper focuses on the magnetic edge damage effect in Cobalt-iron alloys due to laser cutting. Experimental measurements are conducted to develop a model that represents the deterioration of magnetic permeability with distance from the cut edge, considering cumulative damage effects from multiple cuts. The model is validated by predicting the net magnetic behavior of rectangular strips, showing good agreement with measurements.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2023)
Article
Engineering, Manufacturing
H. Ghadbeigi, A. Al-Rubaye, F. C. J. Robinson, D. Hawezy, S. Birosca, K. Atallah
PRODUCTION ENGINEERING-RESEARCH AND DEVELOPMENT
(2020)
Article
Materials Science, Composites
S. Ashworth, J. P. A. Fairclough, M. Monoranu, H. Ghadbeigi, J. Meredith, Y. Takikawa, K. Kerrigan
ADVANCED COMPOSITES LETTERS
(2020)
Proceedings Paper
Engineering, Industrial
F. Ducobu, E. Riviere-Lorphevre, M. Galindo-Fernandez, S. Ayvar-Soberanis, P. -J. Arrazola, H. Ghadbeigi
17TH CIRP CONFERENCE ON MODELLING OF MACHINING OPERATIONS (17TH CIRP CMMO)
(2019)
