bluuebunny/crossref_metadata_2025_split huggingface dataset:
Design and Development of Novel α-SiAlON/Co and α-SiAlON/TiCN Composites for Cutting Tool Inserts
Authors: Alotaibi Amer D. , Abubakar Abba A. , Akhtar S. Sohail , Hakeem Abbas S. , Al-Athel Khaled S. , Arif Abul Fazal M. 
Published: February 2023

Abstract
The present study deals with the development of α-SiAlON-4%Co and α-SiAlON-20%TiCN ceramic composites with desirable properties tailored for enhanced high-cutting tool performance. The effective medium theories and mean-field homogenization schemes are used to design and optimize the volume fractions, the interfacial thermal resistance, and reinforcement particle sizes while incorporating the influence of porosity on the effective properties of the ceramic composites. The designed composites are fabricated via the spark plasma sintering process. The ceramic samples are characterized/analyzed via scanning electron microscopy, energy dispersive spectroscopy, and x-ray diffraction. The effective thermal and structural properties of the composites are measured and compared to that of the computational predictions. The results indicate that excellent densification in α-SiAlON-based composites can be achieved by the use of spark plasma sintering process. Experimentally measured properties of SiAlON-20%TiCN composite compare well with that of the computational predictions and have shown significant enhancement in its effective thermal conductivity and fracture toughness. The measured properties of SiAlON-4%Co composite did not meet the predictions due to Co agglomeration and the large thermal mismatch between the matrix and the inclusion, which emphasizes the need to optimize the synthesis process and establish volume fraction limits of Co in α-SiAlON ceramic composites.
A Sensitivity Analysis Method of Shot Peening Parameters Based on Probabilistic Surface Damage Tolerance Assessment
Authors: Li Guo , Teng Yida , Zhang Xingyu , Ding Shuiting 
Published: February 2023

Abstract
Enhanced life management methods have been developed by the Federal Aviation Administration to address the rare but significant threats posed by the manufacturing anomalies of aeroengine life-limited parts. The probabilistic damage tolerance assessment provides guidance for life management methods by requiring clarification on the effect of manufacturing on life-limited parts in the design stage. Shot peening, a typical manufacturing process, is frequently used to improve fatigue performance. In this study, a new method to correlate manufacturing with engineering that combines shot peening parameters with probabilistic surface damage tolerance assessment is proposed. Through the secondary development of the simulation’s pre-processing and post-processing, the results of residual stress are adopted as input variables of the modified probabilistic surface damage tolerance assessment to calculate the probability of failure, which is closely related to the selection of shot peening parameters. Accordingly, a new integrated model is developed for the sensitivity analysis by automating parametric modeling to improve efficiency and avoid complex workflows. Specifically, the parameters required for simulation are used as input, including the diameter, velocity, and number of shots; and the probability of failure and key parameter are used as output. Results of a sensitivity analysis case show that the probability of disk failure is reduced with the increase of shot peening parameters (number, diameter, speed), where the effect of the diameter is greater within a given range. Therefore, the method proposed in this study can efficiently and intuitively identify the key parameter in the design stage.
Fabrication and Testing of Asymmetric Magnetic-Polymer Flexible Sheets for Biomedical Actuated Devices
Authors: Manzo Maurizio , Bakaraju Megha 
Published: February 2023

Abstract
Flexible actuated sheets are currently being used in different devices in the biomedical field for a variety of different applications. Examples of biomedical devices that use flexible actuated sheets are neural probes, microneedles, micropumps for insulin, intraocular and inner ear drug delivery systems. Among them, micropumps are one of the most flexible and popular devices. In fact, micropumps are being extensively studied for multiple biomedical applications — controlled drug delivery systems, artificial sphincter prosthesis, cell culturing, micro-fluidic analyses. One of the most important applications for actuated membranes is in drug delivery systems, but there are multiple challenges that exist including maintaining controlled flow rate, reaching delicate tissues, and preventing complex side effects.
In this paper, the effect of an inhomogeneous distribution of magnetic particles in the membrane used for actuation is studied for the first time. The fabrication and testing of asymmetric thin flexible sheets magnetic actuators are presented. Focus of this research is to fabricate thin polymeric sheets with thickness range of 120–125μm, with asymmetric distribution of magnetic nano/micro particles.
Iron oxide (Fe3O4) particles are embedded into polymeric membranes made of Polydimethylsiloxane (PDMS). From the perspective of biomedical application, PDMS is chosen for its excellent biocompatibility and Fe3O4 for its non-toxic nature. The particles are mixed with the PDMS polymeric solution and micromagnets are used to localize the magnetic particles during the curing process at selected locations to create asymmetry into the particles’ distribution.
Fe3O4 – PDMS membranes are fabricated and mounted to a fixture to observe deflection by using a camera. An external magnetic field is applied for the actuation of the membrane and two measurement types are made: static and dynamic. A permanent magnet is used for generating the external magnetic field, which is attached to a piezoelectric actuator. The effect of the distribution of magnetic particles are investigated in terms of the deflection of membranes for both static and dynamic behavior. A comparative study of membranes with inhomogeneous and randomly distributed particles is carried out. This work shows that the inhomogeneous distribution of particles has a positive effect on the deflection of the membranes, making them favorable for a wide range of applications involving localized and targeted treatments and precision medicine.
Since magnetic actuation does not require onboard batteries or other power systems, it is very convenient to use. Magnetically actuated sheets can be used in Hyperthermia to have enhanced results due to asymmetric distribution of magnetic particles.
A Domain Specific Language Applied to Phonon Boltzmann Transport for Heat Conduction
Authors: Heisler Eric , Saurav Siddharth , Deshmukh Aadesh , Mazumder Sandip , Sadayappan Ponnuswamy , Sundar Hari 
Published: February 2023

Abstract
The phonon Boltzmann transport equation is a good model for heat transfer in nanometer scale structures such as semiconductor devices. Computational complexity is one of the main challenges in numerically solving this set of potentially thousands of nonlinearly coupled equations. Writing efficient code will involve careful optimization and choosing an effective parallelization strategy, requiring expertise in high performance computing, mathematical methods, and thermal physics. To address this challenge, we present the domain specific language and code generation software Finch. This language allows a domain scientist to enter the equations in a simple format, provide only basic mathematical functions used in the model, and generate efficient parallel code. Even very complex systems of equations such as phonon Boltzmann transport can be entered in a very simple, intuitive way. A feature of the framework is flexibility in numerical methods, computing environments, parallel strategies, and other aspects of the generated code. We demonstrate Finch on this problem using a variety of parallel strategies and model configurations to demonstrate the flexibility and ease of use.
A Study on the Effect of Graphene on the Vibrational and Flame Retardant Characteristics of the GFRP Composites
Authors: Nagamalai Thangapandian , Shanmugam Ragavanantham , Murugan Thirumal Azhagan , Vinayagam Mohanavel , Dennison Seth 
Published: February 2023

Abstract
In this work, the graphene nanoplatelets were reinforced in the GFRP composites to improve their mechanical, vibrational, and flame retardant properties. Three nanocomposites plates namely G1 (GFRP+0.25 wt.% graphene), G2 (GFRP+0.5 wt.% graphene), G3 (GFRP+1 wt.% graphene), and a neat composite plate (G0) were fabricated using hand layup method followed by compression molding. The effect of graphene on the damping properties of the composites was studied by using a free vibration test. The reduction in natural frequency was witnessed in the nanocomposite material ensuring the effective interfacial bonding between the graphene and matrix. The rate of burning test results confirms that the addition of graphene resulted in improved flame retardancy due to the formation of a protective char layer. The highest tensile strength value was observed in the 0.5 wt.% graphene composites, which is ∼1.5 times higher than that of the neat composites. The strength reduction in 1 wt.% graphene composites is due to the percolation of graphene, which acts as a potential site for stress concentration. Unlike tensile strength, the shore hardness value increased with the wt.% of the graphene reinforcement. This study elaborates the synergetic effect of graphene on the mechanical and vibrational characteristics of the composites.
Computational Modeling of Multi-Pass Rolling Parameters Effect on Resulting Fuel Foil Shape
Authors: Mason Taylor , Choi Kyoo Sil , Soulami Ayoub , Johnson Kenneth , Brooks Kriston , Karri Naveen , Joshi Vineet 
Published: February 2023

Abstract
A focus of the U.S. Department of Energy is to improve production yield and reduce the cost of Low Enriched Uranium (LEU)-molybdenum alloy (U-10Mo) monolithic fuel plates that will be replacing High Enriched Uranium (HEU) oxide dispersion fuels used currently in the United States High Performance Research Reactors (USHPRR). One area of improvement is lowering the transverse waviness and longitudinal waviness that can be present within the cold rolled foils following rolling operations. Traditional rolling manufacturing techniques for other metal foils use winders to pull and straighten the foil as it is rolled back and forth to the final thickness. This approach cannot be used to roll thin U-10Mo foils (0.008–0.025″ thick) because only small castings can be rolled due to nuclear criticality safety concerns. As a result, the fuel foils are too short (∼1–2 m in length) to use traditional winders. Therefore, it is crucial to identify other rolling parameters (i.e., roller friction, axial tension load, roller diameter, and roll pass reduction percent) that might reduce transverse waviness and longitudinal waviness in the rolled fuel foil and develop a high-yield, low-cost multi-pass rolling manufacturing process. This report documents a systematic finite element modeling study to investigate the effects of numerous rolling parameters to reduce resulting transverse waviness and longitudinal waviness in the fuel foil during multi-pass rolling of U-10Mo foils. The rolling of a U-10Mo plate with initial dimensions of 1″ × 1″ × 0.048″ is modeled using Abaqus CAE. This rolling is modeled to undergo eight 20% reduction roll passes to a final fuel foil thickness of 0.01″. The elastic-plastic constitutive model of the U-10Mo alloy was input to the fuel foil rolling model. The rollers were modeled as rigid bodies. A comparison of rolling friction coefficients of 0.3 and 0.7 over a wide range of applied axial tension loads were investigated in order to evaluate the effect of using a lubricant during rolling. The effect of roller diameter on the resulting transverse waviness and longitudinal waviness of the fuel foil over a wide range of axial tension loads were also investigated by modeling rollers 7/8″ and 3.75″ in diameter. The results of this systematic finite element method study will aid manufacturers in producing low transverse waviness and reduced longitudinal waviness in U-10Mo fuel foils.
Optimization of Supercritical CO2 Cycle Combined With ORC for Waste Heat Recovery
Authors: Carapellucci Roberto , Di Battista Davide 
Published: February 2023

Abstract
Waste heat recovery is a broadly considered opportunity for efficiency improvement in several energy consumption sectors, intending to reduce energy consumption and related carbon dioxide emissions to the atmosphere. The attention of research activities is focused on transportation and residential sectors, where the possible recovery is characterized by low enthalpy, but with a wider potential market. Therefore, the maximization of recovery is one of the principal aims of this option, and different kinds of technologies have been proposed in this regard. Thermodynamic cycles, which exploit the waste heat considering it as the upper thermal source, seem to be a promising option, and the possibility to combine two different cycles can increase the thermal power harvested.
In this paper, a combination of a supercritical CO2 Brayton cycle with an ORC-based unit has been proposed to recover waste heat from the exhaust gases of an internal combustion engine for the transportation sector. Using CO2 as working fluid is under investigation in literature, for its low Global Warming Potential and its suitable thermodynamic characteristics in dense phase (just above the critical point). An Organic Rankine Cycle (ORC), then, has been bottomed to the CO2 section, to further recover thermal energy and convert it into mechanical useful work. Indeed, the CO2 cycle must have a lower temperature cold sink, where thermal power can be furtherly recovered. The introduction of this second stage of recovery interacts with the upper one, modifying the overall optimization parameters. Hence, this work aims to find the maximization of the recovery from a global point-of-view, identifying possible trade-offs happenings between the two recovery sections. Minimum sCO2 pressure, stack exhaust temperature, and the possibility to have a regeneration stage have been considered as optimizing parameters.
Finally, the optimized system has been applied to a specific mission profile of a commercial vehicle, in order to evaluate the recovery potential during a realistic engine working points sequence. A recovery higher than 4% in every mission considered has been achieved, with values up to 7% in motorway and long-hauling conditions.
Modeling Single Ventricle Morphology With a HLHS-Specific Biventricular Template to Enhance Statistical Shape and Biomechanics Analyses
Authors: Tang Renxiang , Govil Sachin , Mauger Charlène , Hegde Sanjeet , Omens Jeffrey H. , Perry James C. , McCulloch Andrew D. 
Published: February 2023

Abstract
Modeling the hearts of patients with hypoplastic left heart syndrome has remained an ongoing challenge. Thus, in this work, we developed a HLHS-specific biventricular template to capture the single ventricle morphology in this cohort accurately and robustly. We have demonstrated that using the HLHS-specific template to reconstruct patient-specific models from cardiac magnetic resonance images result in significantly higher accuracy comparing to that of using the generic template. Additionally, element distortion in meshes created using the HLHS-specific template is compatible with meshes currently used for finite element analysis. Accurate 3D patient-specific models will serve as powerful tools for subsequent statistical shape and biomechanics analyses to provide insights into remodeling of ventricular shape and function and their potential association with clinical outcomes.
Effects of Flow-Induced Vibration on Forced Convection Heat Transfer From Three Tandem Cylinders at Different Spacing Ratios
Authors: Khan Hamid , Islam Md. 
Published: February 2023

Abstract
This work numerically investigates the effect of FIV on the heat transfer performance of three heated tandem cylinders at different spacing ratios and reduced velocity. The simulation is performed at Reynolds number Re = 100, Prandtl number Pr = 0.7. The three elastically mounted heated cylinders are allowed to oscillate in the transverse direction with reduced velocity Ur = 2–20, mass ratio m* = 2, and zero damping coefficient for maximum oscillation. The spacing ratio between cylinders G* = 2 and 4 are considered to elucidate the effect of FIV on heat transfer in extended body regime (G* = 2) and reattachment regime (G* = 4). The effect of the spacing ratio on FIV and heat transfer is observed through flow structures and quantified through oscillation amplitude, shedding frequency, pressure coefficient, and Nusselt number. The flow around the cylinders and the associated heat transfer depend strongly on the spacing ratio. The present findings can be utilized to develop a strategy for reducing fouling and removing contaminants and wax in piggyback pipes used in nuclear power plants or offshore oil extraction.
Operational Performance of a Photonic Based Microcalorimeter: Specific Heat Measurement
Authors: Zhang Yuwei , Kowalski Gregory 
Published: February 2023

Abstract
A photonic-based nanohole array sensor microcalorimetry is developed at the Microfluidic laboratory at Northeastern University utilizing changes in the extraordinary optical transmission (EOT). This experiment utilized calorimetry to conduct a novel specific heat measurement method for non-reacting fluids on the microscale level. This paper describes a calibration process and an accuracy test for this novel calorimetry. The test chamber was prefilled with deionized (DI) water (55 μl) and heated to steady state. Then room temperature DI water (15 μl) was injected and was treated as an unknown material. The temperature time history is recorded by the thermistor data acquisition system and the EOT by a CCD camera. An energy balance equation and algorithm were developed to calculate the specific heat of the injected material which was compared with its known value. The observed EOT and the corresponding temperature calculated from it exhibit the same trends. The error between the measured and known specific heat specific is 2–6%. The calorimetry has a significantly faster thermal response than traditional calorimeters and requires less compound with high accuracy.
On the Efficacy of Non-Holonomic Canonical Momentum Analysis of Constrained Multi-Body Mechanical Systems – Application in Ground Vehicle Double Wishbone Suspension Dynamics
Authors: Olorunfemi Oluwaseyi J. , Barhorst Alan A. 
Published: February 2023

Abstract
In this research, we aim to ascertain the practicability of generalized momentum canonical equations for non-holonomic rigid body systems by applying it to the modeling and simulation of a Double Wishbone suspension system dynamics. The model of the Double Wishbone suspension system of a passenger car’s front drive is assumed to be planar, with four degrees of freedom. Equations of motion derived from the model are solved using Wolfram Mathematica’s NDsolve Algorithm while dynamic simulations are made from modeling a real-life scenario and verification of the model. Simulated real life scenario had the model excited in one of the four DOFs — the roll rate of the model. Therefore simulation results, graphical plots of the total energy, constraint loop and generalized parameters of the DWB suspension system, predicted the response of vehicle dynamics in this event for a period. The method provides accurate results and we can infer that the set of equations of motion formulated from the projective momentum method can accurately simulate the inherent nonlinear vehicle suspension dynamics behavior. Therefore, the generalized momentum canonical equation for constrained systems has the capability to be used for vehicle dynamics analysis and prediction that are necessary for understanding the complexities involved in ground vehicle ride and handling.
Energy Consumption Evaluation on Robotic Drilling Process Using Digital Twin Technology
Authors: Cardoso Matheus , Lozan Rodrigo , Barbosa Gustavo , Guerra-Zubiaga David , Shiki Sidney 
Published: February 2023

Abstract
Faced with the advances in automation related to the digital transformation of the industry, new products are developed, and the fabrication processes are becoming smarter day by day. However, modern manufacturing systems look for electricity savings, especially in machining operations. In this sense, power consumption has a big deal for industry costs, and it needs to be monitored to provide a more competitive business. So, to minimize this problem, digital manufacturing based on simulation tools has been used to find economic ways to optimize the manufacturing processes, providing a reduction of recurring costs. Thus, this research proposes the use of Tecnomatix Siemens PS (Process Simulate) software for process simulation of 2024 aluminum drilling to explore the analysis of energy consumption (EC) in a machining operation using a robot. Also, this proposal looks for a digital twin conception, comprising its variables and features to make possible a case study assisted by the Design of Experiments (DOE) method.
Design of a Clutching and Braking System to Automate a Chain-Coupled Dual Planetary Gearing Transmission
Authors: Cann Megan , Speed Robert , Moreno Abraham , Azzouz Salim 
Published: February 2023

Abstract
The engineering team at Midwestern State University is working on a double planetary gearing transmission coupled by driving chains and sprockets. The ultimate purpose of this project is to manufacture and automate a transmission apparatus for the Machine Element Design Laboratory. The current team is the fourth team to work on this project and is tasked to build a better entry and exit shaft, as well as a braking system, and automate the entire system.
The Willis Gearing Theory was used to determine the system’s theoretical gear ratios. Next, the entry and exit shafts of the transmission, as well as the braking system, were designed using the SolidWorks CAD software. The blueprints were then sent out to a machine shop for manufacturing and then assembled. A programmable logic controller activated two linear actuators to move two keyed shafts at the entry and the exit of the transmission. An Arduino board was used to ensure safe placement of the braking blocks. It is expected that a future team will complete the PLC programming, measure the mechanical advantage of the system to compare to the theoretical velocity ratio, determine the efficiency of the transmission, and create a lab manual.