期刊文献+
共找到13,285篇文章
< 1 2 250 >
每页显示 20 50 100
A novel approach for the composition design of high-entropy fluorite oxides with low thermal conductivity
1
作者 Guangjin Chen Cuiwei Li +5 位作者 Huaiming Jia Yuwei Zhang Bo Gong Xue Li Tianyu Liu Kepi Chen 《Journal of Advanced Ceramics》 SCIE EI CAS CSCD 2024年第9期1369-1381,共13页
High-entropy fluorite oxides(HEFOs)show significant potential for thermal protection applications due to their advantageous combination of low thermal conductivity and high Yong’s modulus.However,the factors influenc... High-entropy fluorite oxides(HEFOs)show significant potential for thermal protection applications due to their advantageous combination of low thermal conductivity and high Yong’s modulus.However,the factors influencing its formation have not been well studied,and a systematic method for compositional design has not yet been established.In this paper,the effects of oxygen vacancy concentration(O_(vac))and mean cation radius(r¯)on formability of HEFOs were investigated to develop a compositional design approach.The results indicate that an appropriate r¯and Ovac is crucial for promoting the formability of single-phase(Ca_(x)Ce_(y1)Zr_(y2)Hf_(z)Sn_(z)Ti_(z))O_(2−δ)HEFOs.High mass/size disorder and an appropriate Ovac(10%)result in(Ca_(0.2)Ce_(0.1)4Zr_(0.1)2Hf_(0.18)Sn_(0.18)Ti_(0.18))O_(2−δ)exhibiting the lowest thermal conductivity of 1.24 W·m^(−1)·K^(−1).Building upon these insights and employing a valence combination strategy,three new single-phase HEFOs with low thermal conductivity were successfully designed and synthesized,namely,(La0.28Y0.28Ce0.18Zr0.18W0.08)O2−δ,(La_(_(0.3))Y_(_(0.3))Ce_(0.2)Nb_(0.1)Ta_(0.1))O_(2−δ),and(Yb_(0.52)Ce_(0.12)Zr_(0.12)Sn_(0.12)Nb_(0.12))O_(2−δ).This design approach will provide a valuable reference for the design of other high-entropy oxides. 展开更多
关键词 composition design high-entropy fluorite oxides oxygen vacancy phonon scattering thermal conductivity
原文传递
Mountain Highway Design Based on New Green Design Concepts
2
作者 Zhuang Hu Yazhou Liu 《Journal of World Architecture》 2024年第2期118-122,共5页
This article analyzes the implementation of new environmentally friendly design practices in the construction of mountain highways.It covers topics such as green highway design concepts,alignment principles,and green ... This article analyzes the implementation of new environmentally friendly design practices in the construction of mountain highways.It covers topics such as green highway design concepts,alignment principles,and green practices specifically for mountainous highway design.This analysis aims to provide useful insights for creating green mountain highways that meet the demands of modern times. 展开更多
关键词 Mountainous areas HIGHWAYS Green design concepts
下载PDF
Composite armor philosophy(CAP):Holistic design methodology of multi-layered composite protection systems for armored vehicles
3
作者 Evangelos Ch.Tsirogiannis Foivos Psarommatis +1 位作者 Alexandros Prospathopoulos Georgios Savaidis 《Defence Technology(防务技术)》 SCIE EI CAS CSCD 2024年第11期181-197,共17页
A philosophy for the design of novel,lightweight,multi-layered armor,referred to as Composite Armor Philosophy(CAP),which can adapt to the passive protection of light-,medium-,and heavy-armored vehicles,is presented i... A philosophy for the design of novel,lightweight,multi-layered armor,referred to as Composite Armor Philosophy(CAP),which can adapt to the passive protection of light-,medium-,and heavy-armored vehicles,is presented in this study.CAP can serve as a guiding principle to assist designers in comprehending the distinct roles fulfilled by each component.The CAP proposal comprises four functional layers,organized in a suggested hierarchy of materials.Particularly notable is the inclusion of a ceramic-composite principle,representing an advanced and innovative solution in the field of armor design.This paper showcases real-world defense industry applications,offering case studies that demonstrate the effectiveness of this advanced approach.CAP represents a significant milestone in the history of passive protection,marking an evolutionary leap in the field.This philosophical approach provides designers with a powerful toolset with which to enhance the protection capabilities of military vehicles,making them more resilient and better equipped to meet the challenges of modern warfare. 展开更多
关键词 Passive armor protection composite armor Ballistic performance Protection systems Vehicle protection Armor design
下载PDF
A Multiscale Reliability-Based Design Optimization Method for Carbon-Fiber-Reinforced Composite Drive Shafts
4
作者 Huile Zhang Shikang Li +3 位作者 Yurui Wu Pengpeng Zhi Wei Wang Zhonglai Wang 《Computer Modeling in Engineering & Sciences》 SCIE EI 2024年第8期1975-1996,共22页
Carbon fiber composites,characterized by their high specific strength and low weight,are becoming increasingly crucial in automotive lightweighting.However,current research primarily emphasizes layer count and orienta... Carbon fiber composites,characterized by their high specific strength and low weight,are becoming increasingly crucial in automotive lightweighting.However,current research primarily emphasizes layer count and orientation,often neglecting the potential of microstructural design,constraints in the layup process,and performance reliability.This study,therefore,introduces a multiscale reliability-based design optimization method for carbon fiber-reinforced plastic(CFRP)drive shafts.Initially,parametric modeling of the microscale cell was performed,and its elastic performance parameters were predicted using two homogenization methods,examining the impact of fluctuations in microscale cell parameters on composite material performance.A finite element model of the CFRP drive shaft was then constructed,achieving parameter transfer between microscale and macroscale through Python programming.This enabled an investigation into the influence of both micro and macro design parameters on the CFRP drive shaft’s performance.The Multi-Objective Particle Swarm Optimization(MOPSO)algorithm was enhanced for particle generation and updating strategies,facilitating the resolution of multi-objective reliability optimization problems,including composite material layup process constraints.Case studies demonstrated that this approach leads to over 30%weight reduction in CFRP drive shafts compared to metallic counterparts while satisfying reliability requirements and offering insights for the lightweight design of other vehicle components. 展开更多
关键词 Multiscale reliability-based design optimization carbon-fabric-reinforced composite drive shaft
下载PDF
Towards data-efficient mechanical design of bicontinuous composites usinggenerative AI
5
作者 Milad Masrouri Zhao Qin 《Theoretical & Applied Mechanics Letters》 CAS CSCD 2024年第1期57-64,共8页
The distribution of material phases is crucial to determine the composite’s mechanical property.While the full structure-mechanics relationship of highly ordered material distributions can be studied with finite numb... The distribution of material phases is crucial to determine the composite’s mechanical property.While the full structure-mechanics relationship of highly ordered material distributions can be studied with finite number of cases,this relationship is difficult to be revealed for complex irregular distributions,preventing design of such material structures to meet certain mechanical requirements.The noticeable developments of artificial intelligence(AI)algorithms in material design enables to detect the hidden structure-mechanics correlations which is essential for designing composite of complex structures.It is intriguing how these tools can assist composite design.Here,we focus on the rapid generation of bicontinuous composite structures together with the stress distribution in loading.We find that generative AI,enabled through fine-tuned Low Rank Adaptation models,can be trained with a few inputs to generate both synthetic composite structures and the corresponding von Mises stress distribution.The results show that this technique is convenient in generating massive composites designs with useful mechanical information that dictate stiffness,fracture and robustness of the material with one model,and such has to be done by several different experimental or simulation tests.This research offers valuable insights for the improvement of composite design with the goal of expanding the design space and automatic screening of composite designs for improved mechanical functions. 展开更多
关键词 Generative artificial intelligence Stable diffusion composite design Phase field model Molecular dynamics simulation
下载PDF
Exploration of Practice Teaching Reform Based on Outcome-Based Education Concept:Taking Environmental Design Major as an Example
6
作者 Yushan Pang 《Journal of Contemporary Educational Research》 2024年第5期74-79,共6页
The concept of OBE(outcome-based education)is more focused on designing and implementing teaching activities around expected learning outcomes than the traditional teaching model and enhancing the quality of education... The concept of OBE(outcome-based education)is more focused on designing and implementing teaching activities around expected learning outcomes than the traditional teaching model and enhancing the quality of education through clear and measurable learning outcomes,which has led to profound changes in the field of education.However,environmental design practice teaching faces a series of challenges in the implementation of the OBE concept,including the complexity of the assessment system,personalized learning and creative learning,and over-reliance on quantitative assessment.Therefore,in order to further deepen the professionalization of the OBE concept,we have conducted research on the design education practice models at home and abroad,explored the practice teaching models and their applications such as project system,studio model,practical internships,and technology-driven interdisciplinary integration,and took the practice innovative teaching models of Stanford d.school and Rhode Island School of Design(RISD)as examples to explore the characteristics of the curricula,cultivation modes,and the development of the environmental design professional practice teaching model.The characteristics of OBE and RISD are discussed to provide a global vision and local contextual reference for the practice teaching reform of environmental design majors. 展开更多
关键词 Outcome-based education(OBE)concept Practice teaching system Teaching reform Environmental design
下载PDF
Status of and Strategies for the Planning and Design, Maintenance and Management of Chinese Urban Green Land——Application of Ecological Concepts in This Field
7
作者 魏胜林 徐梦萤 张辉 《Journal of Landscape Research》 2010年第8期17-20,共4页
The sustainability of the planning and design goals of urban green land and that of its maintenance and management are mutually related and act as an organic whole. For a long time, the independence of the two is more... The sustainability of the planning and design goals of urban green land and that of its maintenance and management are mutually related and act as an organic whole. For a long time, the independence of the two is more prominent than their organic connection. This research has made preliminary considerations from three aspects. First, it concerns infusing the concept of ecology, contemplating and demonstrating space, as well as reducing the incidence of plant diseases and insect pests of urban green land. Second, the arrangement of flowers and trees for the planning and design of urban green land should comply with the biological attributes of flowers and trees to realize the organic unification of biological and scenic attributes of flowers and trees. Third, the planning and design of urban green land should attach importance to the organic unification of biological and scenic attributes of lawn grass seeds and reduce the difficulty of maintaining lawn. This research attempts to reduce the pressure of maintaining urban green land from the beginning, i.e. the planning and design of urban green land. It also tries to reduce the cost of maintenance and management to the realize planning and design goals of urban green land and the sustainability concerning its maintenance and management and arrive at the mutual unification of the planning and design as well as maintenance and management of urban green land. 展开更多
关键词 URBAN green LAND Planning and design Maintenance concept of ECOLOGY SUSTAINABILITY
下载PDF
A strategy for lightweight designing of a railway vehicle car body including composite material and dynamic structural optimization 被引量:2
8
作者 Alessio Cascino Enrico Meli Andrea Rindi 《Railway Engineering Science》 2023年第4期340-350,共11页
Rolling stock manufacturers are finding structural solutions to reduce power required by the vehicles,and the lightweight design of the car body represents a possible solution.Optimization processes and innovative mat... Rolling stock manufacturers are finding structural solutions to reduce power required by the vehicles,and the lightweight design of the car body represents a possible solution.Optimization processes and innovative materials can be combined in order to achieve this goal.In this framework,we propose the redesign and optimization process of the car body roof for a light rail vehicle,introducing a sandwich structure.Bonded joint was used as a fastening system.The project was carried out on a single car of a modern tram platform.This preliminary numerical work was developed in two main steps:redesign of the car body structure and optimization of the innovated system.Objective of the process was the mass reduction of the whole metallic structure,while the constraint condition was imposed on the first frequency of vibration of the system.The effect of introducing a sandwich panel within the roof assembly was evaluated,focusing on the mechanical and dynamic performances of the whole car body.A mass saving of 63%on the optimized components was achieved,corresponding to a 7.6%if compared to the complete car body shell.In addition,a positive increasing of 17.7%on the first frequency of vibration was observed.Encouraging results have been achieved in terms of weight reduction and mechanical behaviour of the innovated car body. 展开更多
关键词 Structural dynamic optimization Car body lightweight design Railway vehicle dynamics Railway car body engineering Railway vehicle design composite materials
下载PDF
VALENCE ELECTRON STRUCTURE OF HIGH PROPERTY HIGH SPEED RESISTANCE STEEL AND ITS COMPOSITION DESIGN 被引量:8
9
作者 Z.L. Li1,2) ,C.X.Ma2) and Z.L.Liu1) 1) Department of Materials Science and Engineering,Liaoning Institute of Technology,Jinzhou 121001 ,China 2) Collage of Science, Northeast University ,Shenyang,110006 , China 《Acta Metallurgica Sinica(English Letters)》 SCIE EI CAS CSCD 1999年第4期408-414,共7页
Theempiricalelectrontheory of solidsand molecules( EET) and theimproved TFDtheory wereapplied tocalculatethe phasestructurefactorsand interfaceconjunction factorsofcom mon alloying elementsin high speed impact resista... Theempiricalelectrontheory of solidsand molecules( EET) and theimproved TFDtheory wereapplied tocalculatethe phasestructurefactorsand interfaceconjunction factorsofcom mon alloying elementsin high speed impact resistance ( HSIR) steel. According tothese va lenceelectron structure parametersitis deduced thatthe alloying elements of high propertyHSIRsteelshould be Mn, Cr, Ni and Mo. The microscopicstructure ofthesteel with this compositionisthe mixtureof martensite, bainiteand austeniteafter quenching andlow tem peraturetempering.Itspropertiesare:σb = 1750 MPa,σ0 2 = 1460 MPa,δ5 = 12 7 % , AKV(at 40 ℃, cross direction) = 21J, which exceed the requirement of design. For the thick plateof high property HSIRsteel,itissuggestedto add alittleamountof Cu on thebasisofabovecomposition . 展开更多
关键词 HIGH SPEED impact resistancesteel valenceelectron structure composition design
下载PDF
Composition Optimization and Microstructure Design in MOFs-Derived Magnetic Carbon-Based Microwave Absorbers:A Review 被引量:12
10
作者 Honghong Zhao Fengyuan Wang +3 位作者 Liru Cui Xianzhu Xu Xijiang Han Yunchen Du 《Nano-Micro Letters》 SCIE EI CAS CSCD 2021年第12期383-415,共33页
Magnetic carbon-based composites are the most attractive candidates for electromagnetic(EM)absorption because they can terminate the propagation of surplus EM waves in space by interacting with both electric and magne... Magnetic carbon-based composites are the most attractive candidates for electromagnetic(EM)absorption because they can terminate the propagation of surplus EM waves in space by interacting with both electric and magnetic branches.Metal-organic frameworks(MOFs)have demonstrated their great potential as sacrificing precursors of magnetic metals/carbon composites,because they provide a good platform to achieve high dispersion of magnetic nanoparticles in carbon matrix.Nevertheless,the chemical composition and microstructure of these composites are always highly dependent on their precursors and cannot promise an optimal EM state favorable for EM absorption,which more or less discount the superiority of MOFs-derived strategy.It is hence of great importance to develop some accompanied methods that can regulate EM properties of MOFs-derived magnetic carbon-based composites e ectively.This review comprehensively introduces recent advancements on EM absorption enhancement in MOFs-derived magnetic carbon-based composites and some available strategies therein.In addition,some challenges and prospects are also proposed to indicate the pending issues on performance breakthrough and mechanism exploration in the related field. 展开更多
关键词 Magnetic carbon-based composites Metal–organic frameworks composition optimization Microstructure design EM absorption enhancement
下载PDF
Computer Aided Composition Design of Prehardened-Mould Steel for Plastic 被引量:4
11
作者 YanlinHE LinLI +1 位作者 XiaochunWU PatrickWOLLANTS 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2004年第1期71-74,共4页
The improvement of machining behavior of prehardened-mould steel for plastic is realized by using computer-aided composition design in this work. The results showed that the matrix composition of large sectional preha... The improvement of machining behavior of prehardened-mould steel for plastic is realized by using computer-aided composition design in this work. The results showed that the matrix composition of large sectional prehardened mould steel for plastic markedly influences the precipitation of non-metallic inclusion and the control of composition aided by Thermo-Calc software package minimizes the amount of detrimental oxide inclusion. In addition the modification of calcium is optimized in the light of composition design. 展开更多
关键词 Prehardened-mould steel for plastic PRECIPITATION Computer-aided composition design Thermo-Calc software
下载PDF
Conceptual design of oil palm fibre reinforced polymer hybrid composite automotive crash box using integrated approach 被引量:5
12
作者 N S B YUSOF S M SAPUAN +1 位作者 M T H SULTAN M JAWAID 《Journal of Central South University》 SCIE EI CAS CSCD 2020年第1期64-75,共12页
A hybrid conceptual design approach was introduced in this study to develop a conceptual design of oil palm polymer composite automotive crash box(ACB). A combination of theory of inventive problem solving(TRIZ), morp... A hybrid conceptual design approach was introduced in this study to develop a conceptual design of oil palm polymer composite automotive crash box(ACB). A combination of theory of inventive problem solving(TRIZ), morphological charts and biomimetics was applied where the foremost requirements in terms of the material characteristics, function specifications, force identification, root cause analysis, geometry profile and design selection criteria were considered. The strategy was to use creations of nature to inspire five innovative conceptual designs of the ACB structure and the AHP method was applied to perform the pairwise analysis of selecting the best ACB conceptual design. A new conceptual design for a composite ACB was conceived bearing in mind the properties of natural fibre, unlike those of conventional materials such as steel alloys and aluminium alloys. The design with the highest ranking(26.6 %) was chosen as the final conceptual design, which was the one with a honeycomb structure for the outermost profile, reinforced with a spider web structure inside the part, supported by fibre foam structure extracted from the woodpecker sponge tissue at the centre to maximize the energy absorption capability. The new design could solve the problem of bending collapse which is a major cause of failure to absorb maximum impact energy for ACB during collision. However, the final conceptual design will still need several modifications for production and assembly purposes, which will be completed in a further study. 展开更多
关键词 conceptual design automotive crash box hybrid method concept selection method
下载PDF
Optimization of Culture Conditions and Medium Composition for the Marine Algicidal Bacterium Alteromonas sp. DH46 by Uniform Design 被引量:4
13
作者 LIN Jing ZHENG Wei +2 位作者 TIAN Yun WANG Guizhong ZHENG Tianling 《Journal of Ocean University of China》 SCIE CAS 2013年第3期385-391,共7页
Harmful algal blooms(HABs) have led to extensive ecological and environmental issues and huge economic losses.Various HAB control techniques have been developed,and biological methods have been paid more attention.Alg... Harmful algal blooms(HABs) have led to extensive ecological and environmental issues and huge economic losses.Various HAB control techniques have been developed,and biological methods have been paid more attention.Algicidal bacteria is a general designation for bacteria which inhibit algal growth in a direct or indirect manner,and kill or damage the algal cells.A metabolite which is strongly toxic to the dinoflagellate Alexandrium tamarense was produced by strain DH46 of the alga-lysing bacterium Alteromonas sp.The culture conditions were optimized using a single-factor test method.Factors including carbon source,nitrogen source,temperature,initial pH value,rotational speed and salinity were studied.The results showed that the cultivation of the bacteria at 28℃ and 180 r min-1with initial pH 7 and 30 salt contcentration favored both the cell growth and the lysing effect of strain DH46.The optimal medium composition for strain DH46 was determined by means of uniform design experimentation,and the most important components influencing the cell density were tryptone,yeast extract,soluble starch,NaNO3 and MgSO4.When the following culture medium was used(tryptone 14.0g,yeast extract 1.63g,soluble starch 5.0 g,NaNO3 1.6 g,MgSO4 2.3 g in 1L),the largest bacterial dry weight(7.36 g L-1) was obtained,which was an enhancement of 107% compared to the initial medium;and the algal lysis rate was as high as 98.4% which increased nearly 10% after optimization. 展开更多
关键词 algicidal bacteria OPTIMIZATION culture conditions medium composition uniform design
下载PDF
PHASE STRUCTURE FACTOR AND INTERFACE CONJUNCTION FACTOR OF CAST IRON AND ITS COMPOSITION DESIGN 被引量:3
14
作者 Z.L.Li,Z.L.Liu ,F.Y.Li,X.P.Yang and Z.G.Gu Departmentof Materials Science and Engineering ,Liaoning Institute of Technology,Jinzhou 121001 ,China 《Acta Metallurgica Sinica(English Letters)》 SCIE EI CAS CSCD 1999年第4期401-407,共7页
Theempiricalelectrontheory of solidsand molecules( EET) and theimproved TFDtheory wereapplied tocalculatethe phasestructurefactorsand interfaceconjunction factorsofcom mon alloying elementsincastiron. Akind of Si- M... Theempiricalelectrontheory of solidsand molecules( EET) and theimproved TFDtheory wereapplied tocalculatethe phasestructurefactorsand interfaceconjunction factorsofcom mon alloying elementsincastiron. Akind of Si- Mo- Cu ductileiron with rareearth Mg asnodularizer was designed accordingtothese valenceelectron structure parameters. Actual applicationtestsshow thatthelongevity of thisiron is 1.5 timesof thatof high manganesesteel. This accordance of theoretical results and actual effectsshows the composition design methodcan beused in othercastiron research. 展开更多
关键词 phasestructure factor interface conjunction factor ductile iron wear resistance composition design
下载PDF
Application of Empirical Electron Theory of Solids and Molecules to Composition Design of Multi-Component Medium-Low-Alloy Steels 被引量:1
15
作者 SHI Juyan XIE Guisheng 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2012年第1期9-17,共9页
For austenitic octahedral segregation structure units, their pure mathematics statistic distribu!ive probability is calculated by the empirical electron theory (EET) of solids and molecules and K-B formula. The prac... For austenitic octahedral segregation structure units, their pure mathematics statistic distribu!ive probability is calculated by the empirical electron theory (EET) of solids and molecules and K-B formula. The practical distributive probability can be obtained only if the statistic distribution of austenitic octahedral segregation structure units and the interaction of the alloying elements in steel are considered. Based on 8 groups of experimental data of original steels, three empirical formulas revealing relationships between material macromechanics factor (Sm) and tensile strength (ab), or impact energy (AK), or hardness (HRC) of multi-component medium-low-alloy steels were established, respectively. Through the three empirical formulas, new supersaturated carburizing steel has been successfully designed and developed. The other 2 groups of the original experimental steels are used as the standard steel for testing the percentage error of the new steel. The results show that the calculated values are well consistent with those of measured ones and the new supersaturated carburized steel can meet the requirements of the die assembly of cold-drawn seamless stainless steel tube of Taiyuan Iron & Steel (Group) Company LTD. 展开更多
关键词 supersaturated carburizing steel composition design MICROSTRUCTURE empirical electrontheory mechanical property
下载PDF
Erratum to: New high-strength Ti–Al–V–Mo alloy: from high-throughput composition design to mechanical properties 被引量:1
16
作者 Di Wu Wan-lin Wang +3 位作者 Li-gang Zhang Zhen-yu Wang Ke-chao Zhou Li-bin Liu 《International Journal of Minerals,Metallurgy and Materials》 SCIE EI CAS CSCD 2020年第1期129-129,共1页
Erratum to:International Journal of Minerals, Metallurgy and Materials Volume 26, Number 9, September 2019, Page 1151https://doi.org/10.1007/s12613-019-1854-1The original version of this article unfortunately containe... Erratum to:International Journal of Minerals, Metallurgy and Materials Volume 26, Number 9, September 2019, Page 1151https://doi.org/10.1007/s12613-019-1854-1The original version of this article unfortunately contained a mistake. The presentation of Fig. 11 was incorrect. The correct version is given below: 展开更多
关键词 Mo alloy Al Erratum to New high-strength Ti from high-throughput composition design to mechanical properties
下载PDF
Conceptual Design and Selection of Natural Fibre Reinforced Biopolymer Composite (NFBC) Takeout Food Container 被引量:1
17
作者 H.N.Salwa S.M.Sapuan +1 位作者 M.T.Mastura M.Y.M.Zuhri 《Journal of Renewable Materials》 SCIE EI 2021年第4期803-827,共25页
Biopolymer composite has gained huge attention for its beneficial properties such as biodegradable and less impact to the environment.This consequently would diminish the dependency on the petroleum-based polymer.Abun... Biopolymer composite has gained huge attention for its beneficial properties such as biodegradable and less impact to the environment.This consequently would diminish the dependency on the petroleum-based polymer.Abundance of studies have been done on the development and characterization of biopolymer composite materials for food packaging application,but work on the conceptual design of biopolymer composite packaging product is hardly found.Using the Kano Model,Quality Function Deployment for Environment(QFDE),morphological map,and Analytic Hierarchy Method(AHP)framework combination,this paper presents the conceptual design of a natural fibre reinforced biopolymer composites take-out food container.To understand customer satisfaction with the current use of takeout food containers,the Kano model was applied,and the findings were integrated into QFDE.The highest weight of voices of customer and environment(VOCE)as the solution parameters for the design characteristics were later refined using the aid of morphological chart(MC)to systematically develop conceptual designs.Lastly,AHP was utilized to pick the final concept design.The concept design with the highest score(8.3%)was chosen as the final conceptual design. 展开更多
关键词 conceptual design takeout food container biodegradable packaging biopolymer composite Kano model QFDE AHP
下载PDF
Study of the Ballistic Impact Behavior of Protective Multi-Layer Composite Armor
18
作者 Dongsheng Jia Yingjie Xu +2 位作者 Liangdi Wang Jihong Zhu Weihong Zhang 《Computer Modeling in Engineering & Sciences》 SCIE EI 2024年第7期171-199,共29页
The abalone shell,a composite material whose cross-section is composed of inorganic and organic layers,has high strength and toughness.Inspired by the abalone shell,several multi-layer composite plates with different ... The abalone shell,a composite material whose cross-section is composed of inorganic and organic layers,has high strength and toughness.Inspired by the abalone shell,several multi-layer composite plates with different layer sequences and thicknesses are studied as bullet-proof material in this paper.To investigate the ballistic performance of this multi-layer structure,the complete characterization model and related material parameters of large deformation,failure and fracture ofAl_(2)O_(3)ceramics andCarbon Fiber Reinforced Polymer(CFRP)are studied.Then,3D finite element models of the proposed composite plates with different layer sequences and thicknesses impacted by a 12.7 mm armor-piercing incendiary(API)are built using Abaqus to predict failure.The simulation results show that the CFRP/Al2O3 ceramic/Ultrahigh Molecular Weight Polyethylene(UHMWPE)/CFRP(1 mm/4 mm/4 mm/1 mm)composite is the optimized stack of layers.The simulation results under specified layer sequence and thickness have a reasonable correlation with the experimental results and reflect the failure and fracture of the multi-layer composite protective armor. 展开更多
关键词 Protective armor compositE bionic design structure design mechanical property
下载PDF
Application Strategy of Green Transportation Concept in Urban Road Design
19
作者 Haonan Ding Zhipan Yang Shuai Li 《Journal of World Architecture》 2023年第5期1-5,共5页
Urban traffic and urban environmental pollution are important issues that must be taken into account in the process of urbanization,especially in China.Modernization has enabled many developed countries in the west to... Urban traffic and urban environmental pollution are important issues that must be taken into account in the process of urbanization,especially in China.Modernization has enabled many developed countries in the west to carry out rational city traffic planning.At the same time,the concept of green transportation has also emerged,integrating low-energy consumption,low pollution,comfort,and safety into urban traffic to effectively solve issues pertaining to traffic and pollution.The concept of green transportation has been widely adopted in China and made popular in many cities,thereby promoting the sustainable development of cities. 展开更多
关键词 Green transportation concept Urban road design Public transport
下载PDF
COMPOSITION DESIGN FOR A BEARING STEEL WITH LIMITED HARDENABILITY
20
作者 L. P. Xu M. H. Xu +2 位作者 L. Li Y.A. Min X.Z Xuand R.H .Liu (Department of Materials Science and Engineering, Shanghai University, Shanghai 200072, China) (Shanghai No.5 Iron and Steel Factory, Shanghai 200940,China) 《Acta Metallurgica Sinica(English Letters)》 SCIE EI CAS CSCD 1996年第5期379-382,共4页
The composition of a bearing steel was designed for limited hardenability by use of Grossmann's method. A medium frequency induction Process was applied to heat bearings to ensure penetrant heating and suitable so... The composition of a bearing steel was designed for limited hardenability by use of Grossmann's method. A medium frequency induction Process was applied to heat bearings to ensure penetrant heating and suitable solving of carbon and other elements in the matrix. The hardened depth measured from the end quenching test samples and actual bearings matches well with the designed one. 展开更多
关键词 bearing steel limited hardenability composition design
下载PDF
上一页 1 2 250 下一页 到第
使用帮助 返回顶部