检索结果-南通市图书馆

Fiber-reinforced composites in milling and grinding:machining bottlenecks and advanced strategies

Frontiers of Mechanical Engineering 2022年第2期17卷 1-35页

作者： Teng GAO Yanbin ZHANG Changhe LI Yiqi WANG Yun CHEN Qinglong AN Song ZHANG Hao Nan LI Huajun CAO Hafiz Muhammad ALI Zongming ZHOU Shubham SHARMA School of Mechanical and Automotive Engineering Qingdao University of TechnologyQingdao 266520China School of Mechanical Engineering Dalian University of TechnologyDalian 116024China Chengdu Tool Research Institute Co. Ltd.Chengdu 610500China School of Mechanical Engineering Shanghai Jiao Tong UniversityShanghai 200240China School of Mechanical Engineering Shandong UniversityJinan 250061China School of Aerospace University of Nottingham Ningbo ChinaNingbo 315100China School of Mechanical Engineering Chongqing UniversityChongqing 400044China Mechanical Engineering Department King Fahd University of Petroleum and MineralsDhahran 31261Saudi Arabia Hanergy(Qingdao)Lubrication Technology Co. Ltd.Qingdao 266100China Department of Mechanical Engineering IK Gujral Punjab Technical UniversityPunjab 144603India

Fiber-reinforced composites have become the preferred material in the fields of aviation and aerospace because of their high-strength performance in unit *** composite components are manufactured by near netshape and only require finishing operations to achieve final dimensional and assembly *** and grinding arise as the preferred choices because of their precision ***,given their laminated,anisotropic,and heterogeneous nature,these materials are considered *** undesirable results and challenging breakthroughs,the surface damage and integrity of these materials is a research hotspot with important engineering *** review summarizes an up-to-date progress of the damage formation mechanisms and suppression strategies in milling and grinding for the fiber-reinforced composites reported in the ***,the formation mechanisms of milling damage,including delamination,burr,and tear,are ***,the grinding mechanisms,covering material removal mechanism,thermal mechanical behavior,surface integrity,and damage,are ***,suppression strategies are reviewed systematically from the aspects of advanced cutting tools and technologies,including ultrasonic vibration-assisted machining,cryogenic cooling,minimum quantity lubrication(MQL),and tool optimization *** vibration shows the greatest advantage of restraining machining force,which can be reduced by approximately 60%compared with conventional *** cooling is the most effective method to reduce temperature with a maximum reduction of approximately 60%.MQL shows its advantages in terms of reducing friction coefficient,force,temperature,and tool ***,research gaps and future exploration directions are prospected,giving researchers opportunity to deepen specific aspects and explore new area for achieving high precision surface machining of fiber-reinforced composites.

关键词： milling grinding fiber-reinforced composites damage formation mechanism delamination material removal mechanism surface integrity minimum quantity lubrication

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Petrogenesis and tectonic implications of the Early Cretaceous Dagushan adakitic porphyries in the Anshan area,North China Craton

引用

Acta Geochimica 2022年第1期41卷 24-38页

作者： Xiaohui Sun Haoshu Tang Yan Luan Key Laboratory of Western China’s Mineral Resources and Geological Engineering MOESchool of Earth Science and ResourcesChang’an UniversityXi'an 710054China State Key Laboratory of Ore Deposit Geochemistry Institute of GeochemistryChinese Academy of SciencesGuiyang 550081China

The eastern part of the North China Craton suffered significant lithospheric thinning since the Mesozoic,and petrogenesis of the Dagushan adakitic diorite porphyries provides an excellent opportunity to investigate the lithospheric thinning mechanism and geodynamic *** zircon LA-ICP-MS U–Pb geochronology reveals that the representative Dagushan adakitic porphyry was formed at 120.5±0.5 *** Dagushan diorite porphyries are characterized by the relatively high contents of SiO_(2)(64.25–65.70 wt%),Al_(2) O_(3)(15.00–15.38 wt%),Sr(333–491 ppm),low contents of Y(6.50–10.3 ppm),and Yb(0.57–0.85 ppm),and resultant high Sr/Y(47–57)and La/Yb(37–55)ratios,exhibiting geochemical characteristics of typical ***,the relatively high Mg O contents(MgO=2.23–2.29 wt%)and Mg numbers(Mg^(#)-=54–56)of the Dagushan adakitic rocks imply that the pristine adakitic magma interacted with mantle ***,the zircon Hf isotopic signatures(εHf(t)=-19.0 to-28.0;TDM2=2378–2944 Ma)suggest an ancient lower crustal ***,it is proposed that the Dagushan adakitic rock was probably generated by partial melting of delaminated lower crust which was triggered by the Tan-Lu Fault Zone,and the interaction of pristine adakitic magma with mantle peridotite during the ascent finally generated the Dagushan high Mg^(#)adakitic *** is suggested that delamination was an important mechanism for lithospheric thinning of the NCC.

关键词： Diorite porphyry Adakite Lower crust delamination NCC

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

基于自适应分层元的复合材料层合板低速冲击损伤分析(英文)

引用

Chinese Journal of Aeronautics 2008年第4期21卷 313-319页

作者：王立朋燕瑛吴大方吴浩北京航空航天大学航空科学与工程学院北京100083

On the basis ofa 2D 4-node Mindlin shell element method, a novel self-adapting delamination finite element method is presented, which is developed to model the delamination damage of composite laminates. In the method, the sublaminate elements are generated automatically when the delamination damage occurs or extends. Thus, the complex process and state of delamination damage can be simulated practically with high efficiency for both analysis and modeling. Based on the self-adapting delamination method, linear dynamic finite element damage analysis is performed to simulate the low-velocity impact damage process of three types of mixed woven composite laminates. Taking the frictional force among sublaminations during delaminating and the transverse normal stress into account, the analytical results are consistent with those of the experimental data.

关键词： self-adapting delamination element method low-velocity impact delamination composite laminate

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Post-subdution evolution of the Northern Lhasa Terrane, Tibet: Constraints from geochemical anomalies, chronology and petrogeochemistry

引用

China Geology 2022年第1期5卷 84-95页

作者： Shi-mian Yu Xu-dong Ma Yan-chun Hu Wei Chen Qing-ping Liu Yang Song Ju-xing Tang Geological Museum of Guizhou Guiyang 550081China MNR Key Laboratory of Metallogeny and Mineral Assessment Institute of Mineral ResourcesChinese Academy of Geological SciencesBeijing 100037China No.1 Institute of Geology and Mineral Resources of Shandong Province Jinan 250014China

Bangong-Nujiang collisional zone(BNCZ)is an older one in Qinghai-Tibet Plateau and resulted in the famous Bangong-Nujiang metallogenic belt,which plays an important role in evaluating the formation and uplift mechanism of *** northern and central Lhasa Terrane composed the southern part of the *** ore deposits can be used as markers of geodynamic evolution,the authors carried 1∶50000 stream sedimental geochemical exploration in the Xiongmei area in the Northern Lhasa Terrane to manifest the mineralization,and based on this mineralization with geochemical and chronological characteristics of related magmatic rocks to constrain their geodynamics and connection with the evolution of the Lhasa *** authors find Early Cretaceous magma mainly resulted in Cu,Mo mineralization,Late Cretaceous magma mainly resulted in Cu,Mo,and W mineralization in the studying *** results suggest a southward subduction,slab rolling back and break-off,and thickened lithosphere delamination successively occurred within the Northern Lhasa Terrane.

关键词： Bangong-Nujiang collisional zone Geochemical anomalies Mineralization Slab rolling-back/break-off delamination Northern Lhasa Terrane Geological survey engineering Tibet

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Interface properties and failures of REBCO coated conductor tapes:Research progress and challenges

引用

Superconductivity 2023年第4期8卷 53-68页

作者： Peifeng Gao Yameng Zhang Xingzhe Wang Youhe Zhou Key Laboratory of Mechanics on Western Disaster and Environment Ministry of EducationCollege of Civil Engineering and MechanicsKey Laboratory of Special Function Materials and Structure Design of Ministry of EducationLanzhou UniversityLanzhou 730000China

RE‐Ba‐Cu‐O(REBCO,where RE=Y,Gd,Sm,and other rare earth elements)coated conductor(CC)tapes are promising for applications in high‐energy physics and high‐field science owing to their significant advantages such as high critical magnetic field,high current density,and the ability to achieve superconductivity at liquid nitrogen ***,the mechanical and superconducting performances of these CC tapes are significantly affected by interface failures,such as interfacial delamination and coating fractures,which arise from the complex interplay of mechanical stress induced by magnet processing,thermal mismatch stress during cooling,electromagnetic stress under high magnetic fields,and thermal stress during *** study comprehensively reviews the interface properties and failure behavior of REBCO CC ***,the research progress in characterizing the intricate interface properties of REBCO CC is systematically ***,the interface failure behavior in extreme multifield environments was analyzed and ***,this study outlines optimization strategies to mitigate interface failure risks in REBCO superconducting magnet ***,we address the current challenges and future perspectives on interface issues in REBCO CC *** addressing these challenges,this study offers valuable insights for advancing the development and practical implementation of superconducting technologies in diverse applications.

关键词： REBCO coated conductor tapes Interface properties delamination Electro‐mechanical degradation Optimization

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Optimization of AWJM Process Parameters on 3D-Printed Onyx-Glass Fiber Hybrid Composite

引用

哈尔滨工业大学学报:英文版 2023年第2期30卷 84-98页

作者： Dharmalingam G Arun Prasad M Deepak Panghal Sachin Salunkhe Siva kumar M Rathinasuriyan C Department of Mechanical Engineering Vel Tech Rangarajan Dr.Sagunthala R&D Institute of Science and TechnologyAvadiChennai-600062Tamil NaduIndia Department of Fashion Technology National Institute of Fashion TechnologyNew Delhi-11016India

Compared with conventional manufacturing methods, the additive manufacturing technique enhances mechanical properties. The present investigation of additive manufacturing technique is focused on delamination studies of Onyx-Glass Fiber Hybrid Polymer Composite(OGFHPC) along with surface roughness properties during machining(drilling) of composites through abrasive water jet machining(AWJM). However, delamination is a major issue during machining of OGFHPC. In order to overcome these drawbacks, the fabrication of OGFHPC was carried out using fused deposition modeling(FDM) technology which is an additive manufacturing method with Mark forged Mark Two 3D-composite printer. The machinability studies were conducted for drilling operation through AWJM process with different abrasive mass flow rates, drilling diameters and traverse speeds. These drilling machinability process parameters were optimized through the design of experiments-Taguchi analysis followed by the analysis of variance(ANOVA) and validated through the Harmony Search Algorithm(HSA), Whale Optimization Algorithm(WOA) and Grey Wolf Optimization Algorithm(GWO). It was observed that minimum delamination and surface roughness of OGFHPC were optimized for AWJM at abrasive mass flow rates(450 g/min), drilling diameters(12 mm) and traverse speed rate(30 mm/min).

关键词： Onyx-Glass composite fused deposition modeling AWJM delamination surface roughness Taguchi analysis

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

一种新的分层冻胀量观测方法及其在季节冻土区的应用(英文)

引用

冰川冻土 2004年第S1期26卷 319-324页

作者：陈继张喜发王英梅 State Key Laboratory of Frozen Soil Engineering CAREERI CAS Lanzhou Gansu 730000 China College of Construction Engineering of Jilin University Changchun Jilin 130026 China

Observation of delamination frost-heave is of significance in the study of foundation frost damage. The three main methods of observing delamination frost-heave, which are mono-frost-heave-ruler method, multi-frost-heave-ruler method and magnetic-loop method, are briefly introduced in this paper at first. Their respective advantages and disadvantages are analyzed. And then, according to the mechanism of frost-heave and the law of water migration and ice-forming in the freezing soil, a new approximate indirect method of observing the delamination frost-heave, which is antitheses, is brought forward by comparing surface frost-heave and frost-depth. On the basis of observation result in Chengyu Expressway and Daqing, its applicability is analyzed from three aspects under different groundwater level and soil property in seasonal frozen area. The result shows that this method is applicable for these two areas.

关键词： delamination frost-heave amount antitheses seasonal frozen area

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Tribological Behavior of Al CoCrFeNi(Ti_(0.5))High Entropy Alloys under Oil and MACs Lubrication

引用

Journal of Materials Science & Technology 2016年第5期32卷 470-476页

作者： Yuan Yu Jun Wang Jinshan Li Jun Yang Hongchao Kou Weimin Liu State Key Laboratory of Solidification Processing Northwestern Polytechnical University State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical PhysicsChinese Academy of Sciences

The tribological properties of AICoCrFeNi and AICoCrFeNiTi0.5 high entropy alloys under gear oil and multiply alkylated cyclopentanes （MACs） lubrication condition have been studied. The equiaxed crystal structure of AICoCrFeNi alloy is obtained after heat-treatment. The AlCoCrFeNiTi0.5 alloy keeps dendrite structure. Under the gear oil with good lubrication action, AlCoCrFeNiTi0.5 alloy preserves better tribological properties than AICoCrFeNi alloy. The delamination and crack behaviors tend to occur in the grain boundary of AICoCrFeNi alloy and along the interdendrite region of AICoCrFeNiTi0.5 alloy. Under the MACs with relatively poor lubrication action, the applied load slightly influences the wear behavior of AICoCrFeNi alloy, but seriously impacts the wear mechanism of AlCoCrFeNiTi0.5 alloy. Compared with AlCoCrFeNi alloy, AlCoCrFeNiTi0.5 alloy keeps better wear-resistance at low applied load of 100 N, but preserves less wearresistance at high applied load of 200 N.

关键词： High entropy alloy Oil lubrication Tribological properties Microstructure delamination

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Analysis of energy release rate for composite delaminated cylindrical shells subjected to axial compression

引用

Acta Mechanica Sinica 2006年第6期22卷 537-546页

作者： Jinhua Yang Yiming Fu Department of Engineering Mechanics Hunan University Changsha 410082 China

In this paper, the postbuckling governing equations and the analytical expression of the energy release rates associated with delamination growth in a compression-loaded cylindrical shell are derived by using the variational principle of moving boundary and the Griffith fracture criterion. The finite difference method is used to generate the postbuckling solutions of the delaminated cylindrical shells, and with these solutions, the values of the energy release rates are determined. In simulational examples, the effects of a wide range of parameters, such as delamination sizes and depths, boundary conditions, geometrical parameters, material properties and laminate stacking sequences on the energy release rates of axisymmetrical laminated cylindrical shells are intensively discussed.

关键词： Composite cylindrical shell delamination Griffith criterion Energy release rates Finite difference method

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Low velocity impact studies of E-glass/epoxy composite laminates at different thicknesses and temperatures

引用

Defence Technology（防务技术） 2019年第6期15卷 897-904页

作者： T.Sreekantha Reddy P.Rama Subba Reddy Vemuri Madhu Defence Metallurgical Research Laboratory

Low velocity impact experiments were carried out on E-glass/epoxy composite laminates having varying thicknesses at sub zero and elevated temperatures using hemi spherical steel impactor of 16 mm diameter with impact energies in the rage of 50-150 *** performance of the laminates was assessed in terms of energy absorption,maximum displacement,peak force and failure *** indicated that the effect of temperature on energy absorption of the laminate is negligible although the laminates are embrittling at sub zero *** it has influence on failure behaviour and *** force has increased linearly with increase in laminate thickness from 5 to 10 *** it got reduced by 25% when temperature was increased from-20℃ to 100℃,Based on experimental results,laminate perforation energies were predicted using curve fitting *** analysis was carried out using Taguchi method to identify the global effects of various parameters on laminate performance and confirmed that the laminate thickness has significant influence as compared to temperature,for the studied range.

关键词： Laminates Glass fibres Impact behaviour delamination

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：