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Ontology-based technology function matrix for patent analysis of additive manufacturing in the dental industry 基于本体的牙科行业增材制造专利分析技术功能矩阵
Pub Date : 2017-04-17 DOI: 10.1504/IJMR.2017.10003723
A. Trappey, C. Trappey, Tong-Mei Wang, Mark Y. L. Tang
Additive manufacturing (AM) technologies have been developed and applied to many domains where product mass-customisation is critical to maintaining competitive advantage. For instance, AM has been adopted for use in the medical and dental manufacture of implants, prosthetics and orthodontics, where these devices must be made to match each patient's unique facial, dental or other body profiles. The research presented focuses on the technological and functional aspects of patent informatics to discover the innovation trends for materials, products, and processes. The research proposes a generic methodology incorporating patent text and data mining to create an ontology based technology function (TF) matrix for any technology domain. The TF matrix is applied to describe the distribution of global dental AM patents. The research compares the latest dental-related AM research initiatives in Taiwan with globally emerging patents. The patent based analytical approach enables RD Revised 22 October 2016; Accepted 8 November 2016]
增材制造(AM)技术已经发展并应用于许多领域,在这些领域中,产品大规模定制对于保持竞争优势至关重要。例如,增材制造已被用于医疗和牙科植入物、假肢和正畸的制造,这些设备必须与每个患者独特的面部、牙齿或其他身体轮廓相匹配。本研究聚焦于专利资讯的技术与功能方面,以发现材料、产品与制程的创新趋势。该研究提出了一种结合专利文本和数据挖掘的通用方法,可以为任何技术领域创建基于本体的技术功能矩阵。TF矩阵用于描述全球牙科AM专利的分布。该研究将台湾最新的牙科相关AM研究计划与全球新兴专利进行了比较。基于专利的分析方法使RD得以实现。接受2016年11月8日]
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引用次数: 5
Dynamic production control system for SME: implementation on plastic blow-moulding machine 中小企业动态生产控制系统:在塑料吹塑机上的实现
Pub Date : 2016-09-30 DOI: 10.1504/IJMR.2016.079468
C. Yeh, Yu-Tang Lee, Wen-Chin Liu
Most small and medium-sized enterprises (SME) own less-resources to invest on highly computerised production control system, the productivity can be improved by conserved and effective tool of dynamic production control when dealing with fluctuation business demands of globalisation is essential. This study is based on the principle of advanced planning and scheduling (APS) which is adopted eM-plant with Excel to simulate dynamic production control system that can meet the requirement of APS for SME. The virtual plant is exercised by simulation of eM-plant as to compare with the precedent production control system for the plastic blow-moulding machine plant on their restricted delivery requirement. Obviously, the refine dynamic production system concludes the KPIs are benefited from refine system which shorten order responding time to 15 minutes, shrink the duration of arranging order schedule from one day manually to 20 minutes, and escalate the rate of delivery on time to 80% from 45% previously. [Received 28 September 2015; Revised 24 June 2016; Accepted 1 July 2016]
大多数中小型企业没有足够的资源来投资于高度电脑化的生产控制系统,而在应对全球化波动的业务需求时,采用保守而有效的动态生产控制工具可以提高生产力。本研究以先进计划与调度(APS)的原理为基础,采用eM-plant和Excel对中小企业动态生产控制系统进行仿真,以满足先进计划与调度的要求。通过对em工厂的仿真,对虚拟工厂进行了仿真,并与已有的塑料吹塑机厂生产控制系统进行了比较。显然,细化动态生产系统得出的结论是,细化系统将订单响应时间缩短到15分钟,将手工安排订单计划的时间缩短到20分钟,并将交货准时率从之前的45%提高到80%,从而使kpi受益。[2015年9月28日收到;2016年6月24日修订;接受2016年7月1日]
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引用次数: 0
Modelling and simulation of single and multi-pass flow forming to investigate the influence of process parameters on part accuracy 对单道次和多道次流动成形进行建模和仿真,研究工艺参数对零件精度的影响
Pub Date : 2016-09-30 DOI: 10.1504/IJMR.2016.079473
Mithun Haridas, G. Gopal, A. Ramesh, R. Katta
Flow forming is an incremental forming process used for making long, thin-walled seamless tubes with high strength and dimensional accuracy. This is carried out by compressing the pre-formed tube using one or more rollers, leading to the plastic flow of material in the radial, axial, and tangential directions. This ultimately results in reduction in thickness and elongation of the tube. In order to achieve the required accuracy and to reduce the shop floor costs, a better understanding of the influence of process parameters on part geometry, deformation mechanism, and stress-strain patterns will be required. This paper describes the development of a detailed finite element model, using Abaqus/Explicit, to accurately simulate the flow forming process for AISI-1045 MC-Steel, and attempts to predict the influence of process parameters like axial stagger, feed ratio, and percentage reduction, on output parameters like ovality, diametral growth, and spring back. The effect of multi-pass on surface finish is also investigated. [Received 26 August 2015; Revised 1 July 2016; Accepted 12 July 2016]
流动成形是一种渐进成形工艺,用于制造具有高强度和尺寸精度的长薄壁无缝管。这是通过使用一个或多个滚轮压缩预成型管来实现的,从而导致材料在径向、轴向和切向上的塑性流动。这最终导致在厚度和延长管的减少。为了达到所需的精度并降低车间成本,需要更好地了解工艺参数对零件几何形状、变形机制和应力-应变模式的影响。本文描述了一个详细的有限元模型的开发,使用Abaqus/Explicit,以准确地模拟AISI-1045 MC-Steel的流动成形过程,并试图预测轴向错动、进料比和压下率等工艺参数对椭圆度、直径生长和回弹等输出参数的影响。研究了多道次对表面光洁度的影响。[2015年8月26日收到;2016年7月1日修订;接受2016年7月12日]
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引用次数: 1
Comparison of denoising schemes and dimensionality reduction techniques for fault diagnosis of rolling element bearing using wavelet transform 基于小波变换的滚动轴承故障诊断降噪方案与降维技术的比较
Pub Date : 2016-09-30 DOI: 10.1504/IJMR.2016.079461
H. Kumar, P. Pai, N. Sriram, G. Vijay, M. Patil
This paper presents the evaluation of five wavelets-based denoising schemes in order to select the best possible scheme for denoising bearing vibration signals and dimensionality reduction techniques using artificial neural network (ANN). Vibration signals from four conditions of rolling element bearing (REB) namely normal (N), defect on inner race (IR), defect on ball (B) and defect on outer race (OR) have been denoised using interval-dependent denoising scheme, which is the best possible scheme. The denoised signal is subjected to discrete wavelet transform (DWT) to extract 17 statistical features. Principal component analysis (PCA)-based dimensionality reduction technique (DRT) namely PCA alone, Kernel-PCA (KPCA) alone, PCA using SVD and KPCA using SVD have been used for reducing the dimension of the features. It is found that KPCA using SVD resulted in highest prediction accuracy using ANN, making it suitable for effective REB fault diagnosis. [Received 30 November 2015; Revised 17 June 2016; Accepted 20 June 2016]
本文对5种基于小波的轴承振动信号去噪方案进行了评价,并利用人工神经网络降维技术对轴承振动信号进行了去噪。对正常(N)、内滚圈缺陷(IR)、球上缺陷(B)和外滚圈缺陷(OR)四种状态下的滚动轴承振动信号进行了区间依赖去噪,得到了最佳的去噪方案。对去噪后的信号进行离散小波变换(DWT),提取17个统计特征。基于主成分分析(PCA)的降维技术(DRT)分别是单独的PCA、单独的核主成分分析(KPCA)、使用奇异值分解的PCA和使用奇异值分解的KPCA。结果表明,基于奇异值分解的KPCA比基于神经网络的KPCA预测精度更高,适用于REB故障的有效诊断。[2015年11月30日收到;2016年6月17日修订;接受2016年6月20日]
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引用次数: 5
Research on laser weld bonding of duel phase steel to aluminium alloy 双相钢与铝合金激光焊接的研究
Pub Date : 2016-09-30 DOI: 10.1504/IJMR.2016.079459
Dianwu Zhou, Ningning Li, Shaohua Xu, Jinshui Liu
Laser weld bonding of DP590 dual phase steel to 6,016 aluminium alloy is studied in steel-on-aluminium overlap configuration. Microstructure, hardness distribution and mechanical properties of the welding joint are analysed. Results reveal that some defects, such as pores, cracks and softening in heat affected zone (HAZ), can be avoided in welding joints, and welding penetration depth and width increase compared with those of laser welding. The thermal conduction rate mounts up and the cooling rate of the welding joint ascends, laser energy is more absorbed by the lower aluminium alloy, which leads to Al element diffusion suppressed from the lower to the upper, and the Al content increasing in both sides of the weld in the molten state. The transverse area has increased in jointing steel to aluminium, and the shear load are shared by the adhesive and the weld, hence the mechanical properties of welding joint are significantly improved. [Received 4 November 2015; Revised 14 June 2016; Accepted 18 June 2016]
研究了DP590双相钢与6016铝合金在钢-铝重叠结构下的激光焊接。分析了焊接接头的显微组织、硬度分布和力学性能。结果表明,该方法可避免焊接接头热影响区气孔、裂纹、软化等缺陷,焊深和焊宽均较激光焊接有所提高。随着热传导速率的增大和焊接接头冷却速率的增大,激光能量更多地被下层铝合金吸收,导致Al元素由下层向上层扩散受到抑制,熔态焊缝两侧Al含量增加。钢铝接头的横向面积增大,剪切载荷由粘结剂和焊缝共同分担,焊接接头的力学性能得到显著改善。[2015年11月4日收到;2016年6月14日修订;接受2016年6月18日]
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引用次数: 0
Experimental investigations and multi-response optimisation of wire electric discharge machining of hypereutectic Al-Si alloys 电火花加工过共晶铝硅合金的实验研究及多响应优化
Pub Date : 2016-09-30 DOI: 10.1504/IJMR.2016.079460
D. Babu, S. Kiran, P. Vundavilli, A. Mandal
Wire electrical discharge machining (WEDM) is a non-traditional machining process, which is used for machining of difficult to machine materials, like composites and inter metallic materials. In the present paper, an attempt is made to machine hypereutectic Al-Si alloys using WEDM as these materials are widely used in automotive, aerospace and electronic fields because of its attractive properties. In the study, the WEDM machining parameters, such as pulse on time, pulse off time, wire feed rate and variation of percentage of silicon are taken as controlling factors for experimentation. In the present manuscript, an attempt is made to study the influence of percentage of silicon in the alloy system on the performance measures, such as material removal rate (MRR) and surface roughness (SR) of machining. Further, the influence of various input process parameters on the responses has also been studied. In order to optimise the said performance characteristics, two multi-objective optimisation methodologies namely grey relational analysis (GRA) and principal component analysis (PCA) are implemented. It has been observed that principal component analysis is found to perform better than grey relational analysis. [Received 9 October 2015; Revised 26 May 2016; Accepted 21 June 2016]
线切割加工是一种非传统的加工工艺,主要用于复合材料和金属间材料等难加工材料的加工。过共晶铝硅合金因其优异的性能在汽车、航空航天和电子等领域得到了广泛的应用,本文尝试采用电火花线切割加工过共晶铝硅合金。在实验中,以脉冲开断时间、进丝速度、硅含量变化等电火花线切割加工参数为控制因素。本文试图研究合金体系中硅含量对材料去除率(MRR)和加工表面粗糙度(SR)等性能指标的影响。此外,还研究了各种输入工艺参数对响应的影响。为了优化上述性能特征,实现了两种多目标优化方法,即灰色关联分析(GRA)和主成分分析(PCA)。研究发现,主成分分析优于灰色关联分析。[2015年10月9日收到;2016年5月26日修订;接受2016年6月21日]
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引用次数: 6
An investigation into surface roughness of work piece produced by chromium powder suspended dielectric in PMEDM process PMEDM工艺中悬浮介质铬粉工件表面粗糙度的研究
Pub Date : 2016-08-10 DOI: 10.1504/IJMR.2016.078253
K. Ojha, R. K. Garg, B. Chowdary
In this research article, an investigation of surface roughness (SR) of work surfaces produced by the powder mixed electrical discharge machining of EN-8 steel has been carried out. Response surface methodology has been used to plan and analyse the experiments. Average current, duty cycle, electrode angle and concentration of chromium powder added into the dielectric fluid were selected as process parameters. Experiments have been performed on a newly designed experimental set-up developed in the laboratory. An empirical model has been developed for surface roughness. In addition, the recommended model has been verified by conducting confirmation experiments. [Received 14 May 2015; Revised 14 April 2016; Accepted 8 June 2016]
本文对EN-8钢粉末混合放电加工的表面粗糙度(SR)进行了研究。利用响应面法对实验进行了规划和分析。选取平均电流、占空比、电极角度和加入介质的铬粉浓度作为工艺参数。实验是在实验室研制的新设计的实验装置上进行的。建立了表面粗糙度的经验模型。此外,还通过验证实验对所推荐的模型进行了验证。[2015年5月14日收到;2016年4月14日修订;接受2016年6月8日]
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引用次数: 2
Remote equipment security in cloud manufacturing systems 云制造系统中的远程设备安全
Pub Date : 2016-08-10 DOI: 10.1504/IJMR.2016.078245
Ben Buckholtz, Ihab Ragai, Lihui Wang
With the growing development of cloud manufacturing (CM) applications in industry, one concern potential users have is security of the data, remote machines and operators. Potential security risks in communication with remotely operated manufacturing equipment have been of recent interest. The purpose of this paper is to provide an overview of security measures being considered to ensure the protection of data being sent to physical machines in a CM system. Topics covered include: internet of things, remote equipment control, security concerns in remote equipment control, existing proposed security measures for remote equipment control, and the future outlook of remote equipment control and security in CM systems. [Received 20 December 2015; Revised 12 May 16; Accepted 12 May 2016]
随着云制造(CM)应用在工业中的不断发展,潜在用户关注的一个问题是数据、远程机器和操作员的安全性。与远程操作的制造设备通信的潜在安全风险最近引起了人们的兴趣。本文的目的是概述为确保在CM系统中保护发送到物理机器的数据而考虑的安全措施。主题包括:物联网,远程设备控制,远程设备控制中的安全问题,现有的远程设备控制安全措施,以及远程设备控制和CM系统安全的未来展望。[2015年12月20日收到;16年5月12日修订;接受2016年5月12日]
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引用次数: 9
Quality casting of motor body using design of experiment and casting simulation 采用试验设计和铸造模拟,对电机本体进行了高质量铸造
Pub Date : 2016-08-10 DOI: 10.1504/IJMR.2016.078243
S. Acharya, J. Vadher, Manojkumar V. Sheladiya, Mahesh Madhnani
Solidification of metals stands as marvel of ultimate significance for metallurgists, casting engineers and physicist which hampers the quality of castings, material yield and cycle time. Method of solidifying in casting is intricate in natural surroundings hence the process replication is mandatory in business before it is actually enforced. Volumetric contraction allied with solidifying of liquefied metal causes defects viz: shrinkage porosity, sink and cavity. Casting defects are decreased through casting simulation software and an intellectual feeding technique. Generally, gating system controls the velocity of molten metal that affects turbulence and flowability of casting. In this research, a challenge is taken to remodel a gating system by design of experiments (DoE) and casting solidification simulation framework ('e-foundry' - a web resource with casting simulation facility) and validation of results based on experiments performed in Krislur Castomech Pvt. Ltd, Bhavnagar, Gujarat, India for minimum shrinkage porosity defect in casting. [Received 29 October 2015; Revised 29 April 2016; Accepted 12 May 2016[
金属的凝固对冶金学家、铸造工程师和物理学家来说是一个具有终极意义的奇迹,它影响着铸件的质量、材料的产量和循环时间。铸造中的固化方法在自然环境中是复杂的,因此在实际执行之前,在商业中必须复制该过程。液态金属凝固过程中的体积收缩会引起收缩、气孔、下沉和空洞等缺陷。通过铸造模拟软件和智能送料技术,减少了铸件缺陷。一般来说,浇注系统控制着影响铸件湍流度和流动性的熔融金属的速度。在本研究中,通过设计实验(DoE)和铸造凝固模拟框架(“e-foundry”——一个具有铸造模拟设施的网络资源)来改造浇注系统,并根据在印度古吉拉特邦巴夫纳加尔Krislur Castomech pltd进行的实验结果进行验证,以实现铸造中最小的缩孔缺陷。[2015年10月29日收到;2016年4月29日修订;2016年5月12日接受[
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引用次数: 3
From cyber-physical systems to Industry 4.0: make future manufacturing become possible 从网络物理系统到工业4.0:让未来制造成为可能
Pub Date : 2016-08-10 DOI: 10.1504/IJMR.2016.078251
Keliang Zhou, Taigang Liu, Ling Liang
Recently, 'Industry 4.0' has become the supporting force in the manufacturing field. From CPS to Industry 4.0, they are leading a new round of industrial revolution. To meet the fourth industrial revolution, USA, European countries, Japan, South Korea and China have presented different versions of the so-called 'Industry 4.0' strategies respectively, which are different from each other in the content, but their common goal is to achieve manufacturing structural adjustment and restructuring and upgrading, to seize a place for future manufacturing, to provide users with better service. What is more, we summarised the five major trends of the future manufacturing. Then, we introduce some enabling technologies about Industry 4.0, among them, CPS plays a key role in the Industry 4.0 factory. Based on the customer to business (C2B) mode, we regard everything as a service, and propose a structure of Industry 4.0. Finally, the automotive industry as an example, we make a brief introduction about an Industry 4.0 case. [Received 15 December 2015; Revised 30 May 2016; Accepted 30 May 2016]
最近,“工业4.0”已经成为制造业领域的支撑力量。从CPS到工业4.0,引领新一轮工业革命。为迎接第四次工业革命,美国、欧洲国家、日本、韩国和中国分别提出了不同版本的所谓“工业4.0”战略,内容各不相同,但共同的目标是实现制造业结构调整和转型升级,为未来制造业抢占一席之地,为用户提供更好的服务。此外,我们总结了未来制造业的五大趋势。然后,我们介绍了工业4.0的一些使能技术,其中CPS在工业4.0工厂中起着关键作用。基于客户对企业(C2B)模式,我们将一切视为服务,提出了工业4.0的架构。最后,以汽车行业为例,简要介绍了一个工业4.0的案例。[2015年12月15日收到;2016年5月30日修订;接受2016年5月30日]
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引用次数: 45
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Int. J. Manuf. Res.
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