bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effect of an Orthogonal Locking Plate and Primary Plate Working Length on Construct Stiffness and Plate Strain in an In vitro Fracture-Gap Model
Authors: de Bruyn Brett Walter , Glyde Mark , Day Robert , Hosgood Giselle 
Published: February 2024

Abstract
Objective The aim of this study was to compare stiffness and strain of an in vitro fracture-gap model secured with a primary 3.5-mm locking compression plate (LCP) at three primary plate working lengths without and with an orthogonal 2.7-mm LCP.
Study Design Primary plate screw configurations modeled short working length (SWL), medium working length (MWL), and long working length (LWL) constructs. Construct stiffness with and without an orthogonal plate during nondestructive four-point bending and torsion, and plate surface strain measured during bending, was analyzed.
Results Single plate construct stiffness was significantly, incrementally, lower in four-point bending and torsion as working length was extended. Addition of an orthogonal plate resulted in significantly higher bending stiffness for SWL, MWL, and LWL (p < 0.05) and torsional stiffness for MWL and LWL (p < 0.05). Single plate construct strain was significantly, incrementally, higher as working length was extended. Addition of an orthogonal plate significantly lowered strain for SWL, MWL, and LWL constructs (p < 0.01).
Conclusion Orthogonal plate application resulted in higher bending and torsional construct stiffness and lower strain over the primary plate in bending in this in vitro model. Working length had an inverse relationship with construct stiffness in bending and torsion and a direct relationship with strain. The inverse effect of working length on construct stiffness was completely mitigated by the application of an orthogonal plate in bending and modified in torsion.
Transnasal Endoscopic Repair of Posttraumatic Meningoencephalocele: A Rare Presentation
Authors: Kaushik Eshaan , Nayyar Ankush , Charaya Kshitij , Jugpal Tejeshwar Singh 
Published: February 2024

AbstractMeningoencephalocele is a rare condition that results due to defect in skull base causing brain tissue to herniate along with meninges. We present a case of posttraumatic meningoencephalocele in an 11-year-old child, who presented with nasal mass and cerebrospinal fluid leak. A cribriform plate defect was detected on magnetic resonance imaging along with herniation of brain tissue. The big defect was successfully repaired endoscopically in multiple layers and without placement of a lumbar drain, thereby reducing the complications of an open transcranial surgery.
A genre-oriented analysis of TikTok instructional discourse
Authors: Tommaso Laura 
Published: February 2024

Abstract
This study intends to contribute to the analysis of digital instructional discourse in order to gain an insight
into how the EFL classroom has in some sense shifted online in the hands of amateur experts (Tolson 2010; Bhatia 2018), who create an
informal learning environment by drawing on their discursive competence, disciplinary knowledge and professional practice. By
incorporating quantitative, qualitative, and case study data, this article considers the value of genre analysis in educational
social media research. It focuses, particularly, on the rhetorical and lexico-grammatical features of a selection of
TikTok video mini-lessons targeting Italian speakers of English as a foreign language. Analysis of the data
reveals that digital language teaching discourse on TikTok is a structured event with recurrent rhetorical
patterns and linguistic features for achieving both pedagogical and promotional communicative purposes. The research bears
considerable relevance given the need for the analysis of transformation processes in instructional discourse amid the widespread
use of information and communication technologies and the advance of online learning.
The presence of source viewership in fansub paratexts
Authors: Qiu Juerong 
Published: February 2024

Abstract
Online viewers’ paratextual activities when watching video content include rating, commenting and reviewing. These have received greater attention in audiovisual translation studies, since viewers’ paratexts can provide clues as to how the subtitled product is understood and what elements capture viewers’ attention. This paper examines the English fansubs of a Chinese period drama, to explore Chinese viewers’ motives for watching the show with English subtitles. Special attention is paid to the roles they play in the meaning-making processes of the online community. The paratextual elements include selected timed comments (comments synchronised to the video timeline), forum comments and reviews. The results show that although Chinese viewers are critical of the subtitles, they are highly aware of the fansubbers’ efforts and are enthusiastic about promoting Chinese culture to the wider world. Further, Chinese viewers participate in conversations with non-Chinese online viewers, bringing novel interpretations and circulating creative pleasure.
Prethermalization in an open quantum system coupled to a spatially correlated bosonic bath
Authors: Saha Saptarshi , Bhattacharyya Rangeet 
Published: February 2024

Abstract
A nearly-integrable isolated quantum many-body system reaches a quasi-stationary prethermal state before a late thermalization. Here, we revisit a particular example in the settings of an open quantum system (OQS). We consider a collection of non-interacting atoms coupled to a spatially correlated bosonic bath characterized by a bath correlation length. Our result implies that the integrability of the system depends on such a correlation length. If this length is much larger than the distance between the atoms, such a system behaves as a nearly-integrable OQS. We study the properties of the emerging prethermal state for this case, i.e. the state’s lifetime, the extensive number of existing quasi-conserved quantities, the emergence of the generalized Gibbs state, and the scaling of von Neumann entropy, etc. We find that for the prethermal state, the maximum growth of entropy is logarithmic with the number of atoms, whereas such growth is linear for the final steady state, which is the Gibbs state in this case. Finally, we discuss how such prethermal states can have significant applications in quantum entanglement storage devices.
Optimization approach of DED process to fulfil the requirements on material properties and component performance of waterjet impeller
Authors: Saai A , Arbo S M , Sørli S H , Dybdahl C , Nedreberg M L 
Published: February 2024

Abstract
Directed energy deposition (DED) processes have a great potential for ship building industry to reduce the lead time of ship part supply. However, ship parts such as propellers and impellers have critical requirements on material’s properties and component’s performance. To ensure the exploitation of DED manufacturing for critical parts, an optimization approach of DED process was developed and demonstrated on waterjet impeller made of duplex stainless steel. The developed approach is based on the understanding of the effects of DED process and heat treatment on the material microstructure, and the effects of the microstructure on the material properties, all optimized to fulfil the requirements on the component. The manufacturing and qualification testing were planned based on the requirements in accordance with the current standard guidance. The assessments by standard testing methods, including tensile, Charpy impact, and bending tests demonstrates that the DED material with an optimized heat treatment fulfil the standard requirements. Corrosion and cavitation tests were also performed and demonstrates the high resistances of DED material to cavitation erosion.
Wear Behavior of SBR/BR Compounds Including Different ZnO Types
Authors: Börüban Bingöl C , Polat Ş , Atapek Ş H 
Published: February 2024

Abstract
Zinc complexes have considerable impact on human health and environment especially on aquatic wildlife. One of the main sources of zinc release to the environment is worn rubber particles from tires. Environmental footprint of zinc oxide during production, ecological and economical concerns have prompted the researchers to reduce its use in rubber formulations. Rubber compounds used in the tread, which is the part of the tire in contact with road, must have high wear resistance. In order to determine the wear performance, laboratory wear tests need to be carried out prior to road tests. In the present study, a tread compound recipe based on SBR/BR blend is designed using conventional and composite ZnO materials having CaCO3 as core. Wear behavior of the control and trial compounds prepared with these ZnO materials are tested at room temperature by using Lambourn test instrument. Wear rates and wear energies are calculated using the weight loss data at different slip rates. Based on the wear performance of the trial compounds as well as their cure and mechanical properties, it can be concluded that composite ZnO materials are good candidates to replace the conventional activators in rubber compounds to provide environmental and economic gains.
Mechanical Characterizations on biobased Sheet Molding Compound (SMC) developed for battery boxes.
Authors: Minini Alberto , Becagli Federico , Nieri Jacopo , Armillei Simone , Mingazzini Claudio 
Published: February 2024

Abstract
In this work, performed within FENICE project (www.fenice-composites.com), semifinished materials for the mass production of fire-resistant battery box in the automotive. SMC were developed using PFA (polyfurfuryl alcohol) resin as the matrix and both long and short basalt fibers as reinforcement in a SMC and impregnation pilot line. Mechanical characterization is used to compare prepreg based on fabric impregnation and SMC and measure basic data needed for modelling. Short fiber reinforced composites are cheaper and more isotropic than those reinforced with fabrics, making them more interesting for mass market application in the automotive, such as electrical cars. The semifinished material production must be optimised, and basic mechanical data must be measured, to be used as input into FEM of the components to be produced.
Investigation of the influence of design parameters onto the cracked lap shear specimen
Authors: Rose P , Linke M , Busquets D 
Published: February 2024

Abstract
The Cracked Lap Shear (CLS) specimen allows a mixed-mode loading condition to be generated without a special test fixture using a simple tensile test. The mixed-mode ratio generated is nearly constant over a wide range of crack growth and is representative of the loading conditions in many structural applications of bonded joints. However, this specimen is not standardised, leading to very dissimilar specimen designs in the literature. In this study, the primary design parameter is the sample width in terms of its application for adhesive characterisation, with a typical layup having a 0° layer in contact with the bond line. The results of quasi-static and fatigue tests using varying specimen widths between 5 mm and 40 mm emphasise the specimen width’s influence. Moreover, CLS specimens with the same layup but without an adhesive layer between the adherends are investigated to study the effects of width scaling without a toughened adhesive bond. While the static tests show a linear relationship between specimen width and joint strength, it is different in fatigue tests, where the crack growth rate increases with decreasing specimen width, both for specimens with and without adhesive bond between the joining partners.
Low-frequency air-coupled transducer based damage detection in composite materials
Authors: Wandowski T. , Kudela P. , Radzienski M. 
Published: February 2024

Abstract
In this paper results of simulations of non-contact elastic wave generation in the composite panel based on acoustic to elastic wave transformation are presented. For this purpose simulations of acoustic wave generation and processing are based on the FEM method in COMSOL. Elastic wave generation and propagation are based on the spectral element method (SEM) in the time domain. The SEM model utilises time-varying acoustic pressure distributions calculated in the FEM. The SEM allows to simulate the interactions of elastic waves with the delamination. Damage localization is based on RMS elastic wave energy maps. In this research a panel made of carbon fibre-reinforced polymer composite is investigated. Research related to low-frequency air-coupled transducer (ACT) is presented. The utilisation of low-frequency waves allows for the reduction of the effects of the wave attenuation in composite material. The proposed combination of FEM and SEM gives an efficient tool for the simulation of non-contact wave generation for non-destructive testing analysis.
Probabilistic buckling assessment and reliability of fiber-metal laminate, composite and aluminum cylindrical panels under compression with load and fabrication uncertainties
Authors: Kalfountzos Costas D , Bikakis George S E , Theotokoglou Efstathios E 
Published: February 2024

Abstract
The objective of this article is to study the buckling behavior and reliability of fiber metal laminated (FML), composite and aluminum cylindrical panels under uniaxial compression taking into account fabrication and loading uncertainties. A 3D finite element modeling with ANSYS software has been implemented for this purpose. The panels are discretized using shell elements and the eigenvalue buckling analysis is conducted for the prediction of elastic buckling. The influences of load and fabrication uncertainties on the buckling load factor are studied with probabilistic analyses and the reliability of the panels is calculated. It is found that the thickness of aluminum layers is the most significant uncertain variable for the critical buckling load factor of FML panels, whereas the fiber misalignment angle of their composite layers is insignificant. As the metal volume fraction decreases, the sensitivity of the elastic buckling load factor to variations of the axial load distribution is reduced whereas its sensitivity to variations of the thickness of composite layers is increased. Consequently, the metal volume fraction is an important design parameter for the uncertain buckling behavior of the panels.
Crystal plasticity based modelling and high cycle fatigue life prediction for bi-lamellar Ti-6Al-4V
Authors: Zhao Yindun , Li Yan , Tang Keke , Ferro Paolo , Berto Filippo 
Published: February 2024

Abstract
Microstructural defects and inhomogeneity of titanium alloys fabricated by additive manufacturing technology make their fatigue performance much more complicated, especially reflected in the dispersion of fatigue life. This work employs crystal plasticity finite element method (CPFEM) to predict high cycle fatigue (HCF) life of bi-lamellar Ti-6Al-4V alloy. We first propose a modified VT technique to build representative volume element (RVE) models highlighting lamellar microstructure and micro-defects. Subsequently, fatigue indicator parameter (FIP) is adopted to analyse fatigue deformation under cyclic loading. Finally, HCF life determined by critical fatigue indicator parameter is compared with experimental data collected from published literatures. The results demonstrate that our approach is able to reflect the dispersion of fatigue life and to predict HCF life of bi-lamellar Ti-6Al-4V in a satisfactory manner.
Using the Point Method to estimate failure loads in 3D printed graphene-reinforced PLA notched plates
Authors: Cicero S , Arrieta S , Sánchez M , Castanon-Jano L 
Published: February 2024

Abstract
This work estimates failure loads in Fused Filament Fabrication (FFF) printed graphene-reinforced PLA (polylactic acid) plates containing different types of stress risers. With this aim, firstly, several notched plates are tested and conducted to fracture. Then, linear elastic Finite Element (FE) analyses are completed to define the corresponding stress profiles and, finally, the Point Method (PM) is applied to establish the failure criterion. This approach asserts that fracture conditions are achieved when the stress level equates the inherent strength (σ0) at a distance from the notch tip equal to L/2, so both parameters (related to each other through the material fracture toughness, Kmat) have been defined beforehand. The estimations of fracture loads obtained following this approach agree with the experimental results. Thus, the present work demonstrates the accuracy of the PM to estimate failure loads in this 3D printed material.
Snapping of a viscoelastic cylindrical panel under loading with small volume compressed gas
Authors: Usmonov Botir , Karimov Isroil , Almuratov Shavkat , Hikmatov Farruxbek , Eshonov B 
Published: February 2024

Abstract
The paper considers the dynamics of the process of a flat rectangular elastic panel having an initial deflection equal to the critical deflection of the static problem of panel stability. The panel is loaded with compressed gas enclosed in a small volume container. Using this value, the load acting on the panel during the snapping process will depend on the deflection of the panel as a result of the adiabatic expansion of the compressed gas. The main goal of the work is to investigate the stability region of a cylindrical panel when loaded with compressed gas. The problem is solved using a developed methodology based on the method of separating variable equations of mathematical physics. Based on calculations, it was found that when the panel is loaded with compressed gas enclosed in a small-volume container, a stabilizing effect appears, i.e. a certain deflection interval appears where the panel does not lose stability. The presence of external pressure makes it possible to expand this area, i.e. the external environment increases the “stabilizing” effect. Also, taking into account the viscoelastic properties of the material expands this area to 10%.
Modernization of the mechanical mixing power numerical calculation method
Authors: Khomyakov A P , Mordanov S V , Naskina D R , Gushshamova V N , Beloded M N , Shkurin P A 
Published: February 2024

Abstract
The modernized numerical method for the mechanical mixing power calculation is proposed. Proposed calculation method allows to decrease the dependence of a stirred vessel mixing power numerical CFD calculation result on an empirical data by using additional term for considering own inertia of a mechanical mixing device. Proposed method bases on the mixing power consumption calculation technique as the function of a mixing device shaft torque. The verification of proposed method was carried out using the experimental measured and simulated values of the circulation-type reactor pump power. The results of proposed method verification show that non-modernized and modernized methods calculation errors are 3.9 % and 4.8 % respectively. Thus, calculation errors are comparable for modernized and non-modernized methods both. Wherein, modernized method unlike non-modernized does not use error correction coefficient that may be determined experimental only. Thus, proposed modernized method of the mechanical mixing power calculation may be used for engineering design calculations and simulations.
Automatic control system of pyrogas parameters in pyrolysis process in acetylene production
Authors: Kadirov Yorkin , Boeva Okila , Rasulov Abdikhoshim , Abrorov Akbar 
Published: February 2024

Abstract
Nowadays existing technological process management systems increasingly require the development of criteria related to ensuring the quantity, quality and technological safety requirements of chemical technological processes. Due to the specific characteristics of these criteria and their subjectivity, the task of repeatedly checking and evaluating remains relevant. In this article, the parameters important in the production of pyrogas, which is the main product in the production of acetylene, and a method of complete control of the safety of the technological process have been developed. In the specified installation, an optimal automatic control system is installed so that we can control the parameters of the pyrolysis process: flow, temperature and pressure. In the article, the parameter control system in the technological process in the TIA Portal V15.1 software is built on the basis of the PID controller. In addition, system functionality, specifications, hardware and device models were also reviewed. It is aimed at reducing the impact of the human factor and increasing safety in production. Also, the basic principles of hardware management at different levels are presented to ensure high reliability of the entire system.
Solution to the problem of detecting a malfunction of the position sensor of small spacecraft
Authors: Shishkin O G 
Published: February 2024

Abstract
The classic scheme for constructing a modern system for controlling the parameters of the angular motion of a spacecraft involves the use of high-precision gyroscopes, periodically adjusted according to the readings of optoelectronic devices. The most widely used in orientation and navigation systems are precision angular velocity sensors and gyroscopes on an electrostatic suspension, which determine the angles of rotation of the aircraft around its center of mass; Angular and linear accelerometers are also used, mounted in a certain way on the body of the aircraft.
Hard anodizing of AK9ch high silicon aluminum alloy
Authors: Sokolov A S , Voroshnin S P , Putrolaynen V V 
Published: February 2024

Abstract
This work is devoted to anodic oxidation at low temperatures in the sulfuric acid electrolyte of the foundry aluminum alloy AK9ch, with a high silicon content. Optimal anodizing conditions were chosen for obtaining coatings with a hardness of more than 300 HV and a thickness of about 40 microns. With an increase in the thickness of the coatings by increasing the current density or anodizing time, their hardness begins to decrease. The resulting hard coatings are planned to be used on large parts obtained by casting aluminum alloy AK9ch.
Crystal varizonicity: fundamental and applied aspects.
Authors: Oksengendler B L , Kh Suleymanov S , Karimov Z I , Turaeva N N , Doroshkevich A S , Mezentseva J 
Published: February 2024

Abstract
A set of ideas about the homogeneous variable zone structure in the near-surface region of ionic crystals is presented. Its origin is shown using generalizations of the Seitz–Madelung scheme. A number of important consequences have been demonstrated: the peculiarity of local surface levels different from Tamm levels; increase in the critical temperature of superconductivity in a sandwich structure; a significant anti-degradation role of these levels in the processes of energy exchange at the interfaces. It is concluded that such homo varizonality is an excellent example of the implementation of the “Bonds and Bands” concept.
Integrating electronic and mechanical components to create an adaptive battery tool
Authors: Pikalov Iakov , Brungardt Maksim , Saramud Mikhail , Tkachev Stepan 
Published: February 2024

Abstract
The article presents the authors’ approach to the development of a special adaptive tool with an autonomous energy source for tightening screws into threaded holes. The tool allows one to tighten and control threaded connections according to the assembly sequence of the device. A distinctive feature is its independence from the qualifications of the assembler, allowing to reduce the number of defects when assembling products.