Procedia manufacturing最新文献_第5页

Gap volume prediction for aircraft wing assembly 飞机机翼装配间隙体积预测

Procedia manufacturing Pub Date : 2021-01-01 DOI: 10.1016/j.promfg.2021.07.035

Ye Yang , Yan Jin , Mark Price , Gasser Abdelal , Paul Maropoulos , Colm Higgins

引用次数: 1

Open source systems and 3D computer design applicable in the dental medical engineering Industry 4.0 – sustainable concept 开源系统和3D计算机设计适用于牙科医疗工程工业4.0 -可持续发展的概念

Procedia manufacturing Pub Date : 2021-01-01 DOI: 10.1016/j.promfg.2021.09.002

Beata Mrugalska , Tihomir Dovramadjiev , Diana Pavlova , Rusko Filchev , Mariana Stoeva , Violeta Bozhikova , Rozalina Dimova

{"title":"Open source systems and 3D computer design applicable in the dental medical engineering Industry 4.0 – sustainable concept","authors":"Beata Mrugalska , Tihomir Dovramadjiev , Diana Pavlova , Rusko Filchev , Mariana Stoeva , Violeta Bozhikova , Rozalina Dimova","doi":"10.1016/j.promfg.2021.09.002","DOIUrl":"10.1016/j.promfg.2021.09.002","url":null,"abstract":"<div><p>The modern dental eHealth system is a complex set of many applicable technological tools, applications and entire scientific fields. These include conventional computer 3D design, CAD/CAM/CAE divisions, as well as open source systems related to the modeling of dental structures, dentures, implants, crowns, bridges and more. In the same way, the application of these modern technical means is involved in the development of dental instruments, where the manufacture of devices often have a characteristic geometry and specific parameters. In this context, an increasingly important role is played by additive technologies, which are a key component in the three-dimensional digitization and, accordingly, three-dimensional real reproduction of dental models, be it final products or working tools. The application of new technologies and modern machines for rapid prototyping is a requirement for every dental clinic, laboratory and research center engaged in offering adequate and sustainable dental healthcare. With all this in mind, Industry 4.0 refers directly to the dental industry, where the optimized and high-quality creation of good dental models used by end customers, patients and stakeholders is needed. This paper aims to cover a significant part of the information in an overview characterizing the main stages and modern technological tools for the needs of dental health, which is a prerequisite for building a comprehensive sustainable concept.</p></div>","PeriodicalId":91947,"journal":{"name":"Procedia manufacturing","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2351978921001967/pdf?md5=25d44b8e4ee88a27875eb47b2777352a&pid=1-s2.0-S2351978921001967-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"54985304","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

A Human-Robot Interface for Industrial Robot Programming using RGB-D Sensor 基于RGB-D传感器的工业机器人人机界面编程

Procedia manufacturing Pub Date : 2021-01-01 DOI: 10.1016/j.promfg.2021.10.003

K. Arsenopoulos , P. Benardos

{"title":"A Human-Robot Interface for Industrial Robot Programming using RGB-D Sensor","authors":"K. Arsenopoulos , P. Benardos","doi":"10.1016/j.promfg.2021.10.003","DOIUrl":"10.1016/j.promfg.2021.10.003","url":null,"abstract":"<div><p>This paper presents the development of a Human-Robot Interface (HRI) that uses an RGB-D sensor to facilitate industrial robot programming. The main aims and functionalities of the HRI are described and subsequently emphasis is placed on two novel user interactions methods through which the operator’s movements and gestures are captured and used to position the joints of a 6 DOF articulated robot arm. In particular, during the first user interaction method the operator’s torso, shoulder and elbow are used to determine the position of the first three robot joints, while the operator’s gestures are used to determine the position of the remaining three joints. During the second user interaction method, a combination of the operator’s movements and gestures are used to select any desirable robot joint and then modify its angle by a user-configurable step. Both interaction methods also allow the operator to control robot speed and gripper position. The HRI is complemented by a virtual model of the robotic arm, created in Unity3D, to evaluate online programming capabilities. Results from using the two developed user interaction methods to position the robot in pre-defined poses are presented and discussed to highlight strengths and weaknesses of each method. Finally, the obtained conclusions are presented and suggestions for future work are made.</p></div>","PeriodicalId":91947,"journal":{"name":"Procedia manufacturing","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2351978921002006/pdf?md5=2fce078c00e80930fa8bc29dccf628d0&pid=1-s2.0-S2351978921002006-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"54985345","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A simulation study of local powder bed gas shielding in Selective Laser Sintering / Melting machines 选择性激光烧结/熔化机局部粉末床气体保护的模拟研究

Procedia manufacturing Pub Date : 2021-01-01 DOI: 10.1016/j.promfg.2021.10.013

Iason Sideris, George-Christopher Vosniakos

{"title":"A simulation study of local powder bed gas shielding in Selective Laser Sintering / Melting machines","authors":"Iason Sideris, George-Christopher Vosniakos","doi":"10.1016/j.promfg.2021.10.013","DOIUrl":"10.1016/j.promfg.2021.10.013","url":null,"abstract":"<div><p>In Selective Laser Sintering and Melting it is necessary to protect metal powder deposited on the powder bed from contact with atmospheric air, which may lead to oxidation and downgrading of the properties of the powder in the presence of high temperature that is necessary for achieving full or partial melting. Thus, the building chamber of commercially available SLS/SLM machines is fully isolated and filled with inert shielding gas which may need to be replenished before each build session thereby raising both machine building and consumables costs. In this paper, it is examined using Computational Fluid Dynamics how protection of the powder area around the laser spot can be achieved by locally insulating it from air by gas circulation in a suitably designed box moving with the laser beam. Full coverage of the respective area and at the same time no disturbance of the powder particles within it are critical requirements. Two concept variants are studied and simulated with promising results.</p></div>","PeriodicalId":91947,"journal":{"name":"Procedia manufacturing","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2351978921002109/pdf?md5=3aec0d270bbeef785d72f8ac90ae58df&pid=1-s2.0-S2351978921002109-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"54985498","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Bayesian inference for the simple step-stress accelerated life tests under order-restriction 顺序约束下简单阶跃应力加速寿命试验的贝叶斯推断

Procedia manufacturing Pub Date : 2021-01-01 DOI: 10.1016/j.promfg.2021.10.021

Crystal Wiedner , David Han

引用次数: 0

UAVs for Industrial Applications: Identifying Challenges and Opportunities from the Implementation Point of View 工业应用的无人机:从实施的角度确定挑战和机遇

Procedia manufacturing Pub Date : 2021-01-01 DOI: 10.1016/j.promfg.2021.10.026

Dimitris Mourtzis , John Angelopoulos , Nikos Panopoulos

{"title":"UAVs for Industrial Applications: Identifying Challenges and Opportunities from the Implementation Point of View","authors":"Dimitris Mourtzis , John Angelopoulos , Nikos Panopoulos","doi":"10.1016/j.promfg.2021.10.026","DOIUrl":"10.1016/j.promfg.2021.10.026","url":null,"abstract":"<div><p>New technologies such as Unmanned Aerial Vehicles (UAV) are constantly being introduced under the Industry 4.0 framework. Although UAVs are mainly used in civil and military applications, the opportunities for Industrial integration must be examined, namely real-time remote monitoring, wireless coverage, and remote sensing. Therefore, UAVs can be considered as proactive solvers, simultaneously contributing to enhanced decision making as they are considered to be Internet of Things (IoT) platforms for efficient cost-effective data collection and monitoring. However, the use of UAVs in confined and crowded Industrial environments, e.g. machine shops, need further research. Therefore, this paper focuses on highlighting the limitations regarding the integration of UAVs in modern manufacturing systems as well as on presenting an intelligent framework based on Industrial Internet of Things (IIoT) for real-time machine shop monitoring. The applicability of the developed framework is tested in-vitro, in a laboratory-based machine shop.</p></div>","PeriodicalId":91947,"journal":{"name":"Procedia manufacturing","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2351978921002237/pdf?md5=1ce20000b6cb31853f340fd1a554ace2&pid=1-s2.0-S2351978921002237-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"54985960","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 16

Making Additively Manufactured Cores with Conformal Tooling Directly on a Die-base 直接在模基上用保形模具制造增材芯

Procedia manufacturing Pub Date : 2021-01-01 DOI: 10.1016/j.promfg.2021.10.028

Roland Stolt , Milad Ashour Pour , Dimitrios Siafakas

{"title":"Making Additively Manufactured Cores with Conformal Tooling Directly on a Die-base","authors":"Roland Stolt , Milad Ashour Pour , Dimitrios Siafakas","doi":"10.1016/j.promfg.2021.10.028","DOIUrl":"10.1016/j.promfg.2021.10.028","url":null,"abstract":"<div><p>Dies for high pressure die casting (HPDC) has traditionally been manufactured by machining from slabs of tool steel. Currently, the possibility of manufacturing them using additive manufacturing is being explored. This provides some advantages such as the possibility of making conformal cooling channels. However, the size of the dies is often larger than can be handled in most metal printers Still, it is possible to partly print the die by adding cores with intricate conformal cooling on a traditionally manufactured die base. In this paper, a feasibility study of using selective laser melting (SLM) to print cores of maraging steel directly onto a die base is explored. Results shows that the strength of the bond between the two metals is sufficient, and that the connection between the drilled and printed tooling channels can be made. The paper reasons on the expected impacts on the tooling industry showing potential for extended die life and recovery of die bases via re-manufacturing.</p></div>","PeriodicalId":91947,"journal":{"name":"Procedia manufacturing","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2351978921002250/pdf?md5=64281b7c58bc210fea6459dcbe4829fb&pid=1-s2.0-S2351978921002250-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"54985989","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Improving Lean Manufacturing Systems and Tools Engagement Through the Utilisation of Industry 4.0, Improved Communication and a People Recognition Methodology in a UK Engine Manufacturing Centre 通过利用工业4.0、改进的沟通和人员识别方法，在英国发动机制造中心改善精益制造系统和工具参与

Procedia manufacturing Pub Date : 2021-01-01 DOI: 10.1016/j.promfg.2021.10.052

M.G. McKie , R. Jones , J. Miles , I.R. Jones

{"title":"Improving Lean Manufacturing Systems and Tools Engagement Through the Utilisation of Industry 4.0, Improved Communication and a People Recognition Methodology in a UK Engine Manufacturing Centre","authors":"M.G. McKie , R. Jones , J. Miles , I.R. Jones","doi":"10.1016/j.promfg.2021.10.052","DOIUrl":"10.1016/j.promfg.2021.10.052","url":null,"abstract":"<div><p>There are many companies around the world implementing Lean Manufacturing Systems and Tools, also known as Lean practices. Although Lean practices have been proven to be very useful, there are a number of challenges when implementing and maintaining them. Culturally employees in different countries and companies have differing motivations. Therefore, finding a method to motivate and engage employees to adhere to the Lean practices is a priority. Moreover, there are new technologies emerging which can be utilised to assist in the communication and improve engagement and adherence of the Lean practices. Additionally, it is important to understand how these technologies can be linked and cross utilized within the organization in an Industry 4.0 approach. This case study examines the implementation of Lean practices in an Engine Manufacturing Centre, taking into consideration what motivates individuals, utilising technology and considering an Industry 4.0 approach.</p></div>","PeriodicalId":91947,"journal":{"name":"Procedia manufacturing","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2351978921002493/pdf?md5=31e6e043b79fbb3e33af06c110dad966&pid=1-s2.0-S2351978921002493-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"54986279","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 10

Virtual training for assembly tasks: a framework for the analysis of the cognitive impact on operators 装配任务的虚拟培训:对操作员认知影响的分析框架

Procedia manufacturing Pub Date : 2021-01-01 DOI: 10.1016/j.promfg.2021.10.072

Agnese Brunzini , Fabio Grandi , Margherita Peruzzini , Marcello Pellicciari

{"title":"Virtual training for assembly tasks: a framework for the analysis of the cognitive impact on operators","authors":"Agnese Brunzini , Fabio Grandi , Margherita Peruzzini , Marcello Pellicciari","doi":"10.1016/j.promfg.2021.10.072","DOIUrl":"10.1016/j.promfg.2021.10.072","url":null,"abstract":"<div><p>The importance of training for operators in industrial contexts is widely highlighted in literature. Virtual Reality (VR) technology is considered an efficient solution for training, since it provides immersive, realistic, and interactive simulations environments where the operator can learn-by-doing, far from the risks of the real field. Its efficacy has been demonstrated by several studies, but a proper assessment of the operator’s cognitive response in terms of stress and cognitive load, during the use of such technology, is still lacking. This paper proposes a comprehensive methodology for the analysis of user’s cognitive states, suitable for each kind of training in the industrial sector and beyond. Preliminary feasibility analysis refers to virtual training for assembly of agricultural vehicles. The proposed protocol analysis allowed understanding the operators’ loads to optimize the VR training application, considering the mental demand during the training, and thus avoiding stress, mental overload, improving the user performance.</p></div>","PeriodicalId":91947,"journal":{"name":"Procedia manufacturing","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2351978921002699/pdf?md5=9bfa0bfe2fa42b0b7f894e9bc5a6fce4&pid=1-s2.0-S2351978921002699-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"54986444","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

An approach to airline MRO operators planning and scheduling during aircraft line maintenance checks using discrete event simulation 航空公司MRO运营商在飞机线路维护检查期间使用离散事件模拟进行计划和调度的方法

Procedia manufacturing Pub Date : 2021-01-01 DOI: 10.1016/j.promfg.2021.07.024

Salah Albakkoush, Emanuele Pagone, Konstantinos Salonitis

{"title":"An approach to airline MRO operators planning and scheduling during aircraft line maintenance checks using discrete event simulation","authors":"Salah Albakkoush, Emanuele Pagone, Konstantinos Salonitis","doi":"10.1016/j.promfg.2021.07.024","DOIUrl":"10.1016/j.promfg.2021.07.024","url":null,"abstract":"<div><p>The process of scheduling and planning refers to examining aircraft history based on when and where the aircraft should go for service checks. In this paper, the authors focused on line maintenance activities and examined the impact of unexpected factors (Missing tools and safety requirements) on such activities during the process through a Discrete Event Simulation (DES) model. The DES was used to determine the following: 1. The plan time of each maintenance task according to maintenance scheduling based on the X airline company in Libya; 2. A tasks and productivity evaluation which involved examining the number of tasks required to do per check according to the scheduling plan and planned tasks performed by technicians, and; 3. The total elapsed time involved by analysing the average time for each task according to maintenance schedule planning. The results show that, for all scenarios conducted, the DES model was operating at a high level, and in some scenarios, there was a breakdown in service tasks; a clear indication that the workload factor was high during check periods. However, the main finding in this study highlights how a number of different tasks or the breakdown of maintenance work packages were not being completed before the actual time that had been allocated for the general external condition A-check of the aircraft. This made it necessary to study the work package for each check separately and examine these work packages as they relate to DES which presents a potential solution to a more efficient planning approach. This feature enhances the applicability of the proposed method in real-life, and helps airlines cope with the dynamic environment of airline MRO.</p></div>","PeriodicalId":91947,"journal":{"name":"Procedia manufacturing","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.promfg.2021.07.024","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45618559","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8