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《机械工程前沿(英文)》 2023年 第18卷 第2期 doi: 10.1007/s11465-022-0744-9
关键词: difficult-to-machine metal material green machining high-speed dry milling laser energy field-assisted milling ultrasonic energy field-assisted milling cryogenic minimum quantity lubrication energy field-assisted milling
Jagdeep SINGH,Rajiv Kumar SHARMA
《机械工程前沿(英文)》 2016年 第11卷 第4期 页码 374-387 doi: 10.1007/s11465-016-0388-8
Electrical discharge machining (EDM) is a well-known nontraditional manufacturing process to machine the difficult-to-machine (DTM) materials which have unique hardness properties. Researchers have successfully performed hybridization to improve this process by incorporating powders into the EDM process known as powder-mixed EDM process. This process drastically improves process efficiency by increasing material removal rate, micro-hardness, as well as reducing the tool wear rate and surface roughness. EDM also has some input parameters, including pulse-on time, dielectric levels and its type, current setting, flushing pressure, and so on, which have a significant effect on EDM performance. However, despite their positive influence, investigating the effects of these parameters on environmental conditions is necessary. Most studies demonstrate the use of kerosene oil as dielectric fluid. Nevertheless, in this work, the authors highlight the findings with respect to three different dielectric fluids, including kerosene oil, EDM oil, and distilled water using one-variable-at-a-time approach for machining as well as environmental aspects. The hazard and operability analysis is employed to identify the inherent safety factors associated with powder-mixed EDM of WC-Co.
关键词: WC hazard and operability analysis (HAZOP) discharging aerosol concentration dielectrics powders
《机械工程前沿(英文)》 2023年 第18卷 第1期 doi: 10.1007/s11465-022-0719-x
关键词: grinding aerospace difficult-to-machine material biolubricant physicochemical property grindability
Lei WANG, Jing LIU
《能源前沿(英文)》 2013年 第7卷 第3期 页码 317-332 doi: 10.1007/s11708-013-0271-9
关键词: liquid metal material genome energy material material discovery advanced material room-temperature liquid alloy thermodynamics phase diagram
Coupling evaluation for material removal and thermal control on precision milling machine tools
《机械工程前沿(英文)》 2022年 第17卷 第1期 页码 12-12 doi: 10.1007/s11465-021-0668-9
关键词: machine tools cutting energy efficiency thermal stability machining accuracy coupling evaluation
A review of low-temperature plasma-assisted machining: from mechanism to application
《机械工程前沿(英文)》 2023年 第18卷 第1期 doi: 10.1007/s11465-022-0734-y
关键词: low-temperature plasma difficult-to-cut material machinability hydrophilization effect Rehbinder effect
Experimental research on ductile fracture criterion in metal forming
Song YU, Weiming FENG
《机械工程前沿(英文)》 2011年 第6卷 第3期 页码 308-311 doi: 10.1007/s11465-011-0233-z
Ductile fracture criterion is key limitation parameter in material forming. Accuracy predicting surface and internal failure in plastic deformation process affects on the technology design of workpiece and die greatly. Tension, compression, torsion and shearing test on 45# steel are utilized for providing the experimental values of the critical values at fracture, and 11 widely used ductile fracture criterion are selected to simulate the physical experiments and their relative accuracy for predicting and quantifying fracture initiation sites are investigated. The comparing results show that metal forming process under high triaxiality can be estimated successively using both Normalized Cockcroft-latham and the Brozzo ductile fracture criteria, but the Ayada and general Rice-Tracey model work very well for the low triaxiality cases.
关键词: ductile fracture criteria metal forming process material experiment stress triaxiality
Win-Win: Anthropogenic circularity for metal criticality and carbon neutrality
《环境科学与工程前沿(英文)》 2023年 第17卷 第2期 doi: 10.1007/s11783-023-1623-2
● Anthropogenic circularity science is an emerging interdisciplinary field.
关键词: Anthropogenic circularity Material flow analysis Criticality Carbon neutrality Solid waste Circular economy
Surface tension of liquid metal: role, mechanism and application
Xi ZHAO, Shuo XU, Jing LIU
《能源前沿(英文)》 2017年 第11卷 第4期 页码 535-567 doi: 10.1007/s11708-017-0463-9
关键词: surface tension liquid metal soft machine printed electronics electrowetting self-actuation
High heat flux thermal management through liquid metal driven with electromagnetic induction pump
《能源前沿(英文)》 2022年 第16卷 第3期 页码 460-470 doi: 10.1007/s11708-022-0825-9
关键词: high heat flux liquid metal electromagnetic pump minichannel heat sink thermal interface material
郭东明
《中国工程科学》 2011年 第13卷 第10期 页码 47-57
随着高端装备和产品的不断发展,对装备和产品制造的性能要求也越来越多和越来越高,涌现出一大批高性能指标要求的关键零部件,其加工已由以往的单纯几何形状和尺寸精度要求,跃升为以性能要求为主、性能与几何参数一体化的精密加工要求。这些高性能零件多呈精密复杂曲面、超高精度,以及材料超硬、超脆、超黏等难加工特征,其性能受几何、材料等多因素耦合作用,采用传统工艺进行精密加工制造十分困难,存在废品率高、加工效率低,特别是性能指标难以保证等难题。从高端制造装备业的需求出发,提出并阐明了高性能零件的特点、分类以及数字化可控去除加工方式的内涵,在此基础上指出了四类高性能零件精密加工所涉及的关键问题,并着重介绍了这些问题的研究现状、存在的难点和可行的解决方案,为面向高性能要求的性能与几何参数一体化的加工理论、方法和工艺技术体系的建立提供参考,以解决高性能零件的精密制造难题。
关键词: 高性能 性能与几何参数一体化 精密加工 难加工材料 复杂曲面
《化学科学与工程前沿(英文)》 2022年 第16卷 第6期 页码 1023-1029 doi: 10.1007/s11705-022-2142-6
关键词: machine learning modeling material industrial applications environment
王家柱
《中国工程科学》 2003年 第5卷 第8期 页码 16-22
三峡工程是世界最大的多目标开发的综合利用工程。工程规模巨大,技术复杂,具有防洪、发电、航运等巨大的综合效益。文章论述了工程建设过程中已经和将要解决的一大批重大科学技术难题,并指出其将对水利水电科学技术的发展起到重要的促进作用。
多尺度材料与过程设计的数据驱动和机理混合建模方法 Perspective
周腾, Rafiqul Gani, Kai Sundmacher
《工程(英文)》 2021年 第7卷 第9期 页码 1231-1238 doi: 10.1016/j.eng.2020.12.022
世界人口的不断增长要求加工业以更高效和更可持续的方式生产食品、燃料、化学品和消费品。功能性过程材料是这一挑战的核心。传统上,人们根据经验或者通过反复试验的方法来发现新型先进材料。随着理论方法和相关工具的不断改进和计算机能力的提高,现在流行使用计算方法来指导材料选择和设计,这种方法也非常有效。由于材料选择与材料使用的过程操作之间存在很强的相互作用,必须同时进行材料设计和过程设计。尽管有这种重要联系,但由于通常需要使用不同规模的多个模型,材料和过程的集成设计并不容易。混合建模为解决此类复杂的设计问题提供了一个有前景的选择。在混合建模中,用数据驱动模型描述原本计算成本高昂的材料特性,而用机理模型表示众所周知的过程相关原理。本文重点介绍了混合建模在多尺度材料和过程设计中的重要性。首先介绍通用设计方法,然后选择了六个重要的应用领域:四个来自化学工程领域,两个来自能源系统工程领域。对于选定的每个领域,讨论了使用混合建模进行多尺度材料和过程设计的最新研究。最后,本文给出了结论,指出当前研究的局限性和未来的发展空间。
标题 作者 时间 类型 操作
Energy field-assisted high-speed dry milling green machining technology for difficult-to-machine metal
期刊论文
Assessing the effects of different dielectrics on environmentally conscious powder-mixed EDM of difficult-to-machinematerial (WC-Co)
Jagdeep SINGH,Rajiv Kumar SHARMA
期刊论文
Comparative assessment of force, temperature, and wheel wear in sustainable grinding aerospace alloy using biolubricant
期刊论文
Liquid metal material genome: Initiation of a new research track towards discovery of advanced energy
Lei WANG, Jing LIU
期刊论文
Coupling evaluation for material removal and thermal control on precision milling machine tools
期刊论文
High heat flux thermal management through liquid metal driven with electromagnetic induction pump
期刊论文
Smart systems engineering contributing to an intelligent carbon-neutral future: opportunities, challenges, and prospects
期刊论文