Search | Engineering

订阅投稿

首页工程期刊工程焦点工程成就工程前沿关于我们 English

资源类型

期刊论文 930

会议视频 112

会议专题 2

会议信息 1

年份

2024 1

2023 61

2022 80

2021 116

2020 69

2019 39

2018 59

2017 56

2016 41

2015 39

2014 31

2013 38

2012 32

2011 33

2010 58

2009 48

2008 24

2007 29

2006 12

2005 21

展开︾

关键词

颠覆性技术 22

关键技术 17

智能制造 16

信息技术 14

技术 14

农业科学 11

技术预见 11

发展趋势 8

工程科技 8

三峡工程 7

战略研究 7

施工技术 7

碳中和 7

能源 7

2035年 6

技术创新 6

2035 5

发展战略 5

城镇建设 5

展开︾

检索范围：

排序：展示方式：

Application and evaluation of optical distance measurements in geometrical quality testing of microgears

Albert ALBERS, Duotai PAN, Leif MARXEN, Claudia BECKE,

《机械工程前沿（英文）》 2010年第5卷第3期页码 261-269 doi: 10.1007/s11465-010-0100-3

摘要： Microgears are increasingly important in industry. Compared to normal gears, the quality assurance of microgears needs more accurately measured data and simple but feasible measurement methods because of their dimension particula

关键词： microgear optical distance measurement profile deviation CWL sensor micromechanical technology (MMT)

HTML PDF 收藏

Correction to: Highly degradable chitosan-montmorillonite (MMT) nanocomposite hydrogel for controlled

《环境科学与工程前沿（英文）》 2023年第17卷第8期 doi: 10.1007/s11783-023-1704-2

HTML PDF 收藏

Analysis of cement-treated clay behavior by micromechanical approach

Dong-Mei ZHANG, Zhen-Yu YIN, Pierre-Yves HICHER, Hong-Wei HUANG

《结构与土木工程前沿（英文）》 2013年第7卷第2期页码 137-153 doi: 10.1007/s11709-013-0204-z

摘要： Experimental results show the significant influence of cement content on the mechanical properties of cement-treated clays. Cementation is produced by mixing a certain amount of cement with the saturated clay. The purpose of this paper is to model the cementation effect on the mechanical behavior of cement-treated clay. A micromechanical stress-strain model is developed considering explicitly the cementation at inter-cluster contacts. The inter-cluster bonding and debonding during mechanical loading are introduced in two ways: an additional cohesion in the shear sliding and a higher yield stress in normal compression. The model is used to simulate isotropic compression and undrained triaxial tests under various confining stresses on cement-treated Ariake clay and Singapore clay with various cement contents. The applicability of the present model is evaluated through comparisons between numerical and experimental results. The evolution of local stresses and local strains in inter-cluster planes are discussed in order to explain the induced anisotropy due to debonding at contact level under the applied loads. The numerical simulations demonstrate that the proposed micromechanical approach is well adapted for taking into account the main physical properties of cement-treated clay, including damage and induced anisotropy under mechanical loading.

关键词： microstructure cementation clay micromechanics anisotropy debonding

HTML PDF 收藏

Computational modeling of fracture in concrete: A review

Luthﬁ Muhammad Mauludin, Chahmi Oucif

《结构与土木工程前沿（英文）》 2020年第14卷第3期页码 586-598 doi: 10.1007/s11709-020-0573-z

摘要： This paper presents a review of fracture modeling of concrete. The complex material, such as concrete, has been widely used in construction industries and become trending issue in the last decades. Based on comprehensive literature review, there are two main approaches considered to-date of concrete fracture modeling, such as macroscopic and micromechanical models. The purpose of this review is to provide insight comparison from different techniques in modeling of fracture in concrete which are available. In the first section, an overview of fracture modeling in general is highlighted. Two different approaches both of macroscopic and micromechanical models will be reviewed. As heterogeneity of concrete material is major concern in micromechanical-based concrete modeling, one section will discuss this approach. Finally, the summary from all of reviewed techniques will be pointed out before the future perspective is given.

关键词： concrete fracture macroscopic micromechanical heterogeneity

HTML PDF 收藏

硅微z轴谐振陀螺仪负电刚度效应分析及实验验证

夏敦柱,周百令,王寿荣

《中国工程科学》 2007年第9卷第8期页码 66-68

摘要：

介绍了在开环工作状态下硅微z轴谐振陀螺仪由于加工工艺缺陷所导致的误差机理。为减小陀螺仪初始电容差和抑制正交耦合误差，提出了一种闭环控制检测策略。重点分析了其力矩反馈器的电刚度效应并给出其线性数学模型表示式。通过对硅微z轴陀螺仪敏感模态的反馈力与谐振频率的关系分析，间接得出了在敏感方向上电负刚度与力矩器所施电压的内在联系，并在实验上进一步验证电刚度效应。这将为下一步闭环控制方案的设计奠定重要基础。

关键词：硅微z轴陀螺仪负电刚度力矩反馈器微机电系统

HTML PDF 收藏

纳米工程混凝土界面过渡区的纳米力学特征 Article

王欣悦, 董素芬, 李镇明, 韩宝国, 欧进萍

《工程（英文）》 2022年第17卷第10期页码 99-109 doi: 10.1016/j.eng.2020.08.025

摘要：

本研究利用纳米压痕试验和统计学方法研究了纳米填料对水泥石与骨料间界面过渡区（interfacial transition zone, ITZ）的影响，并通过微观力学分析揭示了影响机制。纳米压痕试验结果表明，水泥石复合纳米填料可提高水泥石-骨料ITZ 内部水化程度，减少微孔隙和低密度水化硅酸钙（low-density calcium silicate hydrate, LD C-S-H）的含量，增加高密度水化硅酸钙（high-density calcium silicate hydrate, HD C-SH）和超高密度水化硅酸钙（ultra-high-density calcium silicate hydrate, UHD C-S-H）的含量。此外，本研究表征了一种新的由于纳米中心效应诱导产生的低密度水化硅酸钙（nano-core induced low-density calcium silicate hydrate, NCILD C-S-H），其压痕模量与HD C-S-H 和UHD C-S-H 相似，但硬度高达2.50 GPa。微观力学分析结果表明，ITZ水泥石复合纳米填料后产生的纳米中心-壳单元会增加LD C-S-H的堆积密度，并显著增强水化硅酸钙（calcium silicate hydrate, C-S-H）基本粒子之间的相互作用（包括黏聚力和摩擦力），从而诱导产生NCILD C-S-H，进而改善ITZ。本研究为在纳米尺度上理解纳米填料对混凝土ITZ 的影响提供了理论基础。

关键词：混凝土纳米填料界面过渡区纳米压痕微观力学分析纳米中心效应

HTML PDF 收藏

技术热点、前沿识别支持的2035技术清单调整方法——以机器人技术为例

林亨,周源,刘宇飞

《中国工程科学》 2017年第19卷第1期页码 124-132 doi: 10.15302/J-SSCAE-2017.01.018

摘要：

本文针对技术预见中关注度较高的技术热点、前沿识别和趋势分析问题，综合以往研究提出的成体系的和较为完善的分析方法，并以机器人技术为例，分析了机器人领域的技术热点和技术前沿以及发展趋势，为中国工程科技2035发展战略研究中技术清单的提出与技术产业布局提供了重要的数据支持。

关键词：技术预见技术热点技术前沿专利分析机器人技术

HTML PDF 收藏

第7届中英国际颗粒论坛 (UK–China International Particle Technology Forum VII)

会议日期： 2019年07月28日

会议地点：英国/苏格兰/爱丁堡

主办单位：英国化学工程学会，中国颗粒学会

中国环境工程科技2035技术预见研究

但智钢,史菲菲,王志增,王辉锋、张裴雷、郝吉明、段宁

《中国工程科学》 2017年第19卷第1期页码 80-86 doi: 10.15302/J-SSCAE-2017.01.012

摘要：

技术预见是制定科技发展战略和科技政策的重要基础，德尔菲调查是技术预见中最常用的方法。本研究通过文献分析、专家建议、会议讨论等方法，从大气污染防治、水污染防治、固体废弃物污染防治与资源化、土壤污染防治、生态保护与恢复、环境监测预警与风险控制、资源利用与清洁生产7个子领域提出我国环境工程领域的45项备选技术。根据德尔菲法的调查结果，初步筛选出2035年我国环境工程科技发展的关键技术、共性技术以及颠覆性技术，分析了技术实现时间、发展水平与制约因素，为未来20年我国环境工程科技发展战略和目标的制定提供参考。

关键词：环境工程科技技术预见德尔菲调查关键技术共性技术颠覆性技术

HTML PDF 收藏

航空技术的发展趋势和创新基地建设

张彦仲

《中国工程科学》 1999年第1卷第1期页码 19-23

摘要：

面对21世纪的需要，下一代航空器将飞得更快、尺寸更大、更经济安全、消耗资源更少。载客1 000人的大型飞机、高超音速飞机、微型无人机、地效飞机、倾转旋翼飞机等将交付使用。为减少污染和对石油的依赖，将采用替代燃料。飞机的经济性、安全性、环保性能将有成倍甚至成十倍地提高。面对挑战，必须加强航空技术创新基地建设。

关键词：航空技术发展趋势技术创新重点实验室

HTML PDF 收藏

Status of domestic gasification technology in China

Zhimin HUANG , Jiansheng ZHANG , Guangxi YUE ,

《能源前沿（英文）》 2009年第3卷第3期页码 330-336 doi: 10.1007/s11708-009-0021-1

摘要： Five domestic gasification technologies in China were presented and reviewed, including opposed multi-burner (OMB) gasification technology of coal water slurry (CWS), oxygen staged gasification technology, two-stage dry feed entrained flow gasification, pulverized coal gasification process of HT-L, and ash agglomerating fluidized bed gasification. The former four technologies belong to pressurized entrained flow gasification technology. The process description, technology characteristics, research and development process, performance indexes and commercialization progress of these technologies were mainly discussed.

关键词： domestic gasification technology research and development performance commercialization

HTML PDF 收藏

Computer aided process planning system based on workflow technology and integrated bill of material tree

LU Chun-guang, MENG Li-li

《机械工程前沿（英文）》 2006年第1卷第3期页码 305-312 doi: 10.1007/s11465-006-0039-6

摘要： It is extremely important for procedure of process design and management of process data for product life cycle in Computer Aided Process Planning (CAPP) system, but there are many shortcomings with traditional CAPP system in these respects. To solve these questions, application of workflow technology in CAPP system based on web-integrated Bill of Material (BOM) tree is discussed, and a concept of integrated BOM tree was brought forward. Taking integrated BOM as the thread, CAPP systematic technological process is analyzed. The function, system architecture, and implementation mechanism of CAPP system based on Browser/Server and Customer/Server model are expatiated. Based on it, the key technologies of workflow management device were analyzed. Eventually, the implementation mechanism of integrated BOM tree was analyzed from viewpoints of material information encoding, organization node design of integrated BOM tree, transformation from Engineering BOM (EBOM) to Process BOM(PBOM), and the programming implementation technology.

关键词： PBOM systematic technological implementation technology management workflow technology

HTML PDF 收藏

Digital technology-driven smart society governance mechanism and practice exploration

《工程管理前沿（英文）》 2023年第10卷第2期页码 319-338 doi: 10.1007/s42524-022-0200-x

摘要： A smart society is an advanced form of society following agricultural society, industrial society, and information society, with digital data processing system as its main carrier. However, the governance of a smart society still faces many challenges. In view of this problem, first, this research constructs a smart society governance modernization strategy. Second, the innovation mode of a society governance mechanism driven by digital technology is proposed, including the precise intellectual control of a digital twin, the intelligent ubiquitous sensing of the Internet of Things, the empowerment remodeling of a blockchain and the livelihood service of artificial intelligence. Third, this study systematically explores the practice of smart society governance modernization from the aspects of basic information platform construction, evaluation system construction, application demonstration of epidemic prevention and control driven by big data, support of spatial intelligence and artificial intelligence technology for people’s livelihood, smart campus, public resources, and data governance application demonstration to provide theoretical guidance for promoting digital technology innovation in the process of the governance of a smart society.

关键词： digital technology new infrastructure smart society governance system governance modernization

HTML PDF 收藏

Review of fluid and control technology of hydraulic wind turbines

Maolin CAI, Yixuan WANG, Zongxia JIAO, Yan SHI

《机械工程前沿（英文）》 2017年第12卷第3期页码 312-320 doi: 10.1007/s11465-017-0433-2

摘要：

This study examines the development of the fluid and control technology of hydraulic wind turbines. The current state of hydraulic wind turbines as a new technology is described, and its basic fluid model and typical control method are expounded by comparing various study results. Finally, the advantages of hydraulic wind turbines are enumerated. Hydraulic wind turbines are expected to become the main development direction of wind turbines.

关键词： wind turbine hydraulic system fluid model control technology