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Thermally insulating and fire-retardant bio-mimic structural composites with a negative Poisson's ratio for battery protection

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Carbon Energy 2023年第12期5卷 83-96页

作者： Fengyin Du Zuquan Jin Ruizhe Yang Menglong Hao Jiawei Wang Gang Xu Wenqiang Zuo Zifan Geng Hao Pan Tian Li Wei Zhang Wei She Jiangsu Key Laboratory of Construction Materials School of Materials Science and EngineeringSoutheast UniversityNanjingPeople's Republic of China School of Mechanical Engineering Purdue UniversityWest LafayetteIndianaUSA State Key Laboratory of High-Performance Civil Engineering Materials Jiangsu Sobute New Materials Co.Ltd.NanjingPeople's Republic of China School of Civil Engineering Qingdao University of TechnologyQingdaoPeople's Republic of China Department of Mechanical and Aerospace Engineering University at BuffaloThe State University of New YorkBuffaloNew YorkUSA School of Energy and Environment Southeast UniversityNanjingPeople's Republic of China Jiangsu Key Laboratory of Advanced Metallic Materials School of Materials Science and EngineeringSoutheast UniversityNanjingPeople's Republic of China

Battery safety has attracted considerable attention worldwide due to the rapid development of wearable electronics and the steady increase in the production and use of electric *** battery failures are often associated with mechanical-thermal coupled behaviors,protective shielding materials with excellent mechanical robustness and flame-retardant properties are highly desired to mitigate thermal ***,most of the thermal insulating materials are not strong enough to protect batteries from mechanical abuse,which is one of the most critical scenarios with catastrophic ***,inspired by wood,we have developed an effective approach to engineer a hierarchical nanocomposite via self-assembly of calcium silicate hydrate and polyvinyl alcohol polymer chains(referred as CSH wood).The versatile protective material CSH wood demonstrates an unprecedented combination of light weight(0.018 g cm-3),high stiffness(204 MPa in the axial direction),negative Poisson's ratio(-0.15),remarkable toughness(6.67×105 J m-3),superior thermal insulation(0.0204 W m-1 K-1 in the radial direction),and excellent fire retardancy(UL94-V0).When applied as a protective cover or a protective layer within battery packages,the tough CSH wood can resist high-impact load and block heat diffusion to block or delay the spread of fire,therefore significantly reducing the risk of property damage or bodily injuries caused by battery *** work provides new pathways for fabricating advanced thermal insulating materials with large scalability and demonstrates great potential for the protection of electronic devices.

关键词： battery protection negative Poisson's ratio thermal insulation toughness wood-inspired materials

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VISION-iT:A Framework for Digitizing Bubbles and Droplets

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Energy and AI 2024年第1期15卷 26-35页

作者： Youngjoon Suh Sanghyeon Chang Peter Simadiris Tiffany B.Inouye Muhammad Jahidul Hoque Siavash Khodakarami Chirag Kharangate Nenad Miljkovic Yoonjin Won Department of Mechanical and Aerospace Engineering University of CaliforniaIrvine4200 Engineering GatewayCA 92617-2700USA Department of Electrical Engineering and Computer Science University of CaliforniaIrvine5200 Engineering HallCA 92617-2700USA Department of Mechanical Science and Engineering University of Illinois at Urbana-ChampaignUrbanaIL 61801USA Mechanical and Aerospace Engineering Department Case Western Reserve UniversityClevelandOH44106USA Department of Electrical and Computer Engineering University of Illinois at Urbana-ChampaignUrbanaIL61801USA Materials Research Laboratory University of Illinois at Urbana-ChampaignUrbanaIL61801USA International Institute for Carbon Neutral Energy Research(WPI-12CNER) Kyushu University744 Moto-okaNishi-kuFukuoka 819-0395Japan

Quantifying the nucleation processes involved in liquid-vapor phase-change phenomena,while dauntingly challenging,is central in designing energy conversion and thermal management *** technological advances in the deep learning and computer vision field offer the potential for quantifying such complex two-phase nucleation processes at unprecedented *** leveraging these new technologies,a multiple object tracking framework called“vision inspired online nuclei tracker(VISION-iT)”has been proposed to extract large-scale,physical features residing within boiling and condensation ***,extracting high-quality features that can be integrated with domain knowledge requires detailed discussions that may be field-or case-specific *** this regard,we present a demonstration and discussion of the detailed construction,algorithms,and optimization of individual modules to enable adaptation of the framework to custom *** concepts and procedures outlined in this study are transferable and can benefit broader audiences dealing with similar problems.

关键词： Deep learning Computer vision Nucleation Heat transfer Phase-change phenomena

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High piezoelectricity after field cooling AC poling in temperature stable ternary single crystals manufactured by continuous-feeding Bridgman method

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Journal of Advanced Ceramics 2022年第1期11卷 57-65页

作者： Cong LUO Tomoaki KARAKI Zhuangkai WANG Yiqin SUN Yohachi(John)YAMASHITA Jiayue XU School of Materials Science and Engineering Shanghai Institute of TechnologyShanghai 201418China Department of Electrical and Computer Engineering Faculty of EngineeringToyama Prefectural UniversityToyama 939-0398Japan Department of Mechanical&Aerospace Engineering North Carolina State UniversityNC 27695-7910USA

After field cooling(FC)alternating current poling(ACP),we investigated the dielectric and piezoelectric properties of[001]_(pc)-oriented 0.24Pb(In_(1/2)Nb_(1/2))O_(3)(PIN)-0.46Pb(Mg_(1/3)Nb_(2/3))O_(3)(PMN)-0.30PbTiO3(PT)(PIMN-0.30PT)single crystals(SCs),which were manufactured by continuous-feeding Bridgman(CF BM)within morphotropic phase boundary(MPB)*** ACP with 4 kVrms/cm from 100 to 70℃,the PIMN-0.30PT SC attained high dielectric permittivity of 8330,piezoelectric coefficient(d_(33))of 2750 pC/N,bar mode electromechanical coupling factorκ_(33)of 0.96 with higher phase change temperature(T_(pc))of 103℃,and high Curie temperature(7c)of 180℃.These values are the highest ever reported as PIMN-xPT SC system with Tpc>100℃.The enhancement of these properties is attributed to the induced low symmetry multi-phase supported by phase *** work indicates that FC ACP is a smart and promising method to enhance piezoelectric properties of relaxor-PT ferroelectric SCs including PIMN-xPT,and provides a route to a wide range of piezoelectric device applications.

关键词： field cooling(FC)alternating current poling(ACP) PIMN-0.30PT high piezoelectricity

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Efficient Recycling of Magnesium Alloys via Partial Distillation Using Gravity-Multiple Effect Thermal System (G-METS)

Efficient Recycling of Magnesium Alloys via Partial Distilla...

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Magnesium Technology Symposium, 2025, held as part of the TMS Annual Meeting and Exhibition, TMS 2025

作者： McArthur Sehar, Daniel Saito, Kenichi Telgerafchi, Armaghan Gallego, Maya Sridhar, Meera Iurkovskyi, Artem Powell, Adam Department of Materials Science and Engineering Program Worcester Polytechnic Institute 100 Institute Rd. WorcesterMA01609 United States Department of Mechanical Engineering Shibaura Institute of Technology Tokyo Japan Department of Mechanical Engineering Worcester Polytechnic Institute WorcesterMA United States

ISBN: (纸本)9783031810602

MagnesiumMagnesium’s remarkable stiffnessStiffness-to-weight and high strengthStrength-to-weight ratios could enable substantial vehicle lightweighting versus aluminum and steel. However, primary production is very energy- and emissions-intensive, and recyclingRecycling cannot cost-effectively produce magnesiumMagnesium of sufficient purity for die casting and other structural applications. Distillation can produce high-purity magnesiumMagnesium but is capital- and energy-intensive. Gravity-Driven Multiple Effect Thermal System (G-METS) is a continuous low-pressure magnesiumMagnesium distillation process used in primary production or recyclingRecycling in which heat re-use leads to just 0.5–1 kWh energy consumption per kgMg Mg product—which is 80–90% less energy than current Mg distillation. This paper presents new partial distillation experiments showing 99.96% product purity. An industrial distiller design can help to estimate capital costs. New modeling work describes temperature and pressure change in the vapor conduit, energy use and losses in the industrial distiller, and effects of evaporator flow vanes on the separation of volatile elements such as zinc. © The Minerals, Metals & materials Society 2025.

关键词： Magnesium alloys

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Real-time monitoring of fast gas dynamics with a single-molecule resolution by frequency-comb-referenced plasmonic phase spectroscopy

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PhotoniX 2024年第1期5卷 357-372页

作者： Duy-Anh Nguyen Dae Hee Kim Geon Ho Lee San Kim Dong-Chel Shin Jongkyoon Park Hak-Jong Choi Seung-Woo Kim Seungchul Kim Young-Jin Kim Department of Mechanical Engineering Korea Advanced Institute of Science and Technology(KAIST)Science TownDaejeon 34141South Korea Department of Mechatronic Engineering Faculty of Mechanical EngineeringHo Chi Minh City University of Technology(HCMUT)Vietnam National UniversityHo Chi Minh CityVietnam Department of Cogno-Mechatronics Engineering College of Nanoscience and NanotechnologyPusan National UniversityBusan 46241South Korea Department of Optics and Mechatronics Engineering College of Nanoscience and NanotechnologyPusan National UniversityBusan 46241South Korea School of Mechanical and Aerospace Engineering Nanyang Technological University(NTU)50 Nanyang AvenueSingapore 639798Singapore Institute of Machinery and Materials Nano-Convergence Mechanical Systems Research DivisionKorea156Gajeongbuk-RoYuseong-GuDaejeon 34103South Korea

Surface plasmon resonance(SPR)sensors are based on photon-excited surface charge density oscillations confined at metal-dielectric interfaces,which makes them highly sensitive to biological or chemical molecular bindings to functional metallic *** nanostructures further concentrate surface plasmons into a smaller area than the diffraction limit,thus strengthening photon-sample ***,plasmonic sensors based on intensity detection provide limited resolution with long acquisition time owing to their high vulnerability to environmental and instrumental ***,we demonstrate fast and precise detection of noble gas dynamics at single molecular resolution via frequency-comb-referenced plasmonic phase *** photon-sample interaction was enhanced by a factor of 3,852 than the physical sample thickness owing to plasmon resonance and thermophoresis-assisted optical confinement *** utilizing a sharp plasmonic phase slope and a high heterodyne information carrier,a small atomic-density modulation was clearly resolved at 5 Hz with a resolution of 0.06 Ar atoms per nano-hole(in 10^(11)RIU)in Allan deviation at 0.2 s;a faster motion up to 200 Hz was clearly *** fast and precise sensing technique can enable the in-depth analysis of fast fluid dynamics with the utmost resolution for a better understanding of biomedical,chemical,and physical events and interactions.

关键词： Frequency comb Nanohole array Single molecule detection Refractive index High resolution High speed Traceability to time standard

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Designing Accelerated Vibration Tests Using Model-Based Equivalent Damage Prediction 41st

Designing Accelerated Vibration Tests Using Model-Based Equi...

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41st IMAC, A Conference and Exposition on Structural Dynamics, 2023

作者： Kinnard, Taylor McMullan, Davis Pane, Katherine Flynn, Garrison S. Thompson, Thomas Moore, Keegan Department of Aerospace and Mechanical Engineering University of Notre Dame Notre DameIN United States Department of Mechanical Engineering Texas A&M University College StationTX United States Department of Materials Science and Mechanical Engineering Harvard University CambridgeMA United States Los Alamos National Laboratory Los AlamosNM United States Department of Mechanical and Materials Engineering University of Nebraska LincolnNE United States

ISBN: (纸本)9783031349294

The use of vibration testing to complete qualification of critical components is important for a wide variety of industries to understand the life cycles of their products in operational environments. A common problem with testing components to failure is the time and cost associated with mimicking the full life of a part, creating a need for shorter-duration testing that provides comparable life cycle information. The most common methods that accelerate damage tests use Miner’s Rule, an equation that sums damage percentages caused by varying stress amplitudes. The aim of using Miner’s Rule in damage analysis is to find a shorter-duration test cycle that will provide equivalent damage to the part’s real-world environment. This method has demonstrated accuracy under constant amplitude loading but loses reliability under variable amplitude loadings due to its lack of regard toward the loading sequence. Furthermore, translating from a stress-cycle (SN) curve to design amplitudes for testing requires system knowledge. Finally, the entire process of damage equivalence for additively manufactured (AM) parts is minimally explored in current research. This study seeks to improve the quality of test acceleration by utilizing models of the system under test to not only provide a method for faster, more accurate equivalent damage analysis but also to fill a void of a lack of information regarding test compression of AM parts. To do this, AM specimens designed with a failure point under a complex stress history are evaluated. First, parts are vibration tested on a shaker to achieve experimental failure time. Next, the base inputs used for experimentation are modeled in simulation to evaluate theoretical failure time. Finally, test results of the experimental setup and simulated environment were compared to evaluate the accuracy of Miner’s rule in equivalent damage analysis, as well as test accuracy of SN curves for designing tests of AM parts. © 2024, The Society for Experiment

关键词： Finite element method

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Effect of Hot Rolling on Bainite Phase Transformation in High-Strength, Low-Alloy Steel 3

Effect of Hot Rolling on Bainite Phase Transformation in Hig...

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3rd International Symposium on the Recent Developments in Plate Steels

作者： Saha, Barshan Haffner, Henry Buchely, Mario Lekakh, Simon Chandrashekhara, K. O’Malley, R. Peaslee Steel Manufacturing Research Center Department of Materials Science and Engineering Missouri University of Science and Technology RollaMO65409 United States Department of Mechanical and Aerospace Engineering Missouri University of Science and Technology RollaMO65409 United States

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Effect of Ti on Phase Transformation and Grain Evolution in Nb/V Microalloyed Steel

Effect of Ti on Phase Transformation and Grain Evolution in ...

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AISTech 2024 Iron and Steel Technology Conference

ISBN: (纸本)9780930767259

Low-carbon Nb/V microalloyed steels are extensively used for pipeline construction due to a good combination of mechanical properties and weldability. Austenite/ferrite transformation and grain size evolution during cooling after hot rolling is pivotal to obtaining desired properties. In this study, phase transformation and grain size evolution in two as-cast Nb/V microalloyed low-carbon steels billets were investigated with and without Ti additions, utilizing a quenching dilatometer. Significant ferrite grain morphology changes were observed in Ti-added steel at 10 and 1°C/s cooling rates. Mechanisms of observed changes were discussed and compared with thermodynamic/kinetic predictions. © 2024 by the Association for Iron & Steel Technology.

关键词： Ferrite

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Effect of vacuum isothermal high-pressure gas quenching on heat treatment deformation control and hardness of Cr12MoV dies 10

Effect of vacuum isothermal high-pressure gas quenching on h...

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2024 10th International Conference on Applied materials and Manufacturing Technology, ICAMMT 2024

作者： Fan, Zhenyu Wang, Huizhen Zhai, Yuewen Jiang, Chao Zhou, Leyu Guo, Shuo Zhang, Zibo Zhan, Yuheng Department of Materials Science China Academy of Machinery Beijing Research Institute of Mechanical & Electrical Technology Co. Ltd. Beijing100083 China Department of Aerospace Engineering Faculty of Aerospace Engineering Beijing Institute of Technology Beijing100081 China

Heat treatment produces cumulative deformation of the dies, and it is particularly important to control deformation through appropriate heat treatment processes. The influence of vacuum gas quenching on the heat treatment deformation control of Cr12MoV cold working dies is explored. The heat treatment deformation and hardness of Cr12MoV dies by different heat treatment processes were tested. The dimensional deformation of dies was measured by the three-dimensional detection method. A characterization method for the deformation rate was designed based on the shape characteristics of Cr12MoV dies. The results indicate that the vacuum isothermal gas quenching process contributes to controlling deformation while maintaining the high hardness of the die. The dimensional deformation rate is controlled below 0.05% and the hardness of the sample reached 59.0 HRC after quenching and tempering. © Published under licence by IOP Publishing Ltd.

关键词： Quenching

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Severe Plastically Deformed Mg–Zn–Zr–RE Alloy Developed as a Biomaterial

Severe Plastically Deformed Mg–Zn–Zr–RE Alloy Developed a...

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Magnesium Technology Symposium held at the TMS Annual Meeting and Exhibition, 2024

作者： Shunmugasamy, Vasanth C. Mansoor, Bilal Mechanical Engineering Program Texas A&M University at Qatar Doha Qatar Department of Materials Science and Engineering Texas A&M University College StationTX United States

ISBN: (纸本)9783031502392

Mg alloysMagnesium alloys (Mg alloys) have high corrosion rateCorrosion Rate that inhibits their application as biomaterialBiomaterials. For safe use as biomaterial, it is essential to control their corrosion ratesCorrosion Rate. In Mg alloys, microgalvanicMicro-galvanic corrosion coupling between the α-Mg matrix and secondary precipitates can exist which results in increased corrosion rate. To address this challenge, we engineered the microstructureMicrostructure of a biodegradable Mg–Zn–RE–Zr alloy by severe plastic deformationPlastic deformation process such as friction stir processingFriction Stir Processing (FSP) (FSP), improving its corrosion resistance and mechanical propertiesmechanical Properties simultaneously. Subjecting the alloy to FSP resulted in refined grains, basal textureTexture and broken and uniformly distributed secondary precipitates. In vitro corrosion of base material showed microgalvanic coupling between precipitate and matrix, resulting in unstable surface layer. The processed alloy showed uniform corrosion owing to formation of stable surface film formation, due to the refined grains, texture, and distribution of precipitates. The results show promising potential of Mg alloyMagnesium alloys (Mg alloys)as biomaterialBiomaterials. © The Minerals, Metals & materials Society 2024.

关键词： Corrosion resistance

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