Aluminium Alloy Welding the Weld Stress Deformation and Control

2014 ◽  
Vol 577 ◽  
pp. 86-89
Author(s):  
Qing Guo Meng ◽  
Ying Yin ◽  
Xiao Jun Guo

Welding technology, as one of the process of manufacturing material in the permanent link, are already widely used in various kinds of aerospace ground launch equipment. Modern manufacturing industry is in rapid development phase, the welding automation is inevitable trend of production, which not only can greatly improve the efficiency of welding, but also what more important is to ensure the welding quality, thus to improve the operating environment. Modern welding is developing in the direction of mechanization, automation, intelligence, robot welding has become an important symbol of welding automation technology modernization. This paper focuses on regularity and influence of welding deformation, the welding deformation and deformation control, control and eliminate problems for research.

2012 ◽  
Vol 445 ◽  
pp. 953-958 ◽  
Author(s):  
Vahid Abedini ◽  
Mohsen Shakeri ◽  
Mohammad Hasan Siahmargouei

Computer aided process planning is the bridge between CAD and CAM. Setup planning is the major key to transform design concept into manufacturing domain, which is mainly experience based activity in modern manufacturing industry. Setup planning is a complicated non-linear task constrained by many factors such as tool approach direction, geometric feature relationship, fixturing constraint, tolerance requirement and manufacturing practice. Setup planning identifies which features must be machined in each setup and determines locating datum for each setup. This paper focuses on the development of a formalized procedure for automatic generation of feasible setups. For preventing of tolerance stack-up tried to use datum face as reference plane in fixture design. So, this paper presents a new method for setup planning with accurate respect to datum faces in design and machining. For the proposed work the authors have introduced two concepts namely, inferiority face and control face. A rule-based procedure in several steps is used for solving the problem. The system is developed in Visual Basic on a Solid Works platform. Trial runs with industrial parts indicate that the system is applicable for industrial use.


2013 ◽  
Vol 416-417 ◽  
pp. 743-747
Author(s):  
Long Gen Li

With technical means of continuous improvement and the widespread use of information technology,automatic control technology are constantly generated and development in textile machinery. The larger of the textile machinery manufacturing industry and the wider the range of products produced, the higher the internal automation technology and information technology and more automation products. This paper analyzes the means of automation technology, Dong-guan textile industry machinery used in the automation and control technology and automation control technology trends preliminary summary, and the paper also discusses the technical updates on our inspiration..


2012 ◽  
Vol 433-440 ◽  
pp. 7024-7028
Author(s):  
Hui Fu ◽  
Bin Jin ◽  
Lin Han ◽  
Zuo Tang Tao

With computer technology, communication technology and the rapid development of electronic technology, remote monitoring technology will be more widely used for data transmission requirements and more stringent. GPRS-based remote monitoring system, which is based in communications equipment, through the server to PC, as the remote control platform, embedded applications, network programming and other technology, the remote information display and control. Throughout the system, users can allow each terminal in the case of permission to accept the data on the changes and settings. Wireless network communication is important that the network transmission of data security and consistency, to solve this problem this thesis, performance of network communications software technology to achieve self-monitoring and self-recovery, while use of end to end encryption to encrypt data on the transmission , which can guarantee data reliability, completeness, real time and security.


2021 ◽  
Author(s):  
Zhangyue Shi ◽  
Chenang Liu ◽  
Chen Kan ◽  
Wenmeng Tian ◽  
Yang Chen

Abstract With the rapid development of the Internet of Things and information technologies, more and more manufacturing systems become cyber-enabled, which significantly improves the flexibility and productivity of manufacturing. Furthermore, a large variety of online sensors are also commonly incorporated in the manufacturing systems for online quality monitoring and control. However, the cyber-enabled environment may pose the collected online stream sensor data under high risks of cyber-physical attacks as well. Specifically, cyber-physical attacks could occur during the manufacturing process to maliciously tamper the sensor data, which could result in false alarms or failures of anomaly detection. In addition, the cyber-physical attacks may also illegally access the collected data without authorization and cause leakage of key information. Therefore, it becomes critical to develop an effective approach to protect online stream data from these attacks so that the cyber-physical security of the manufacturing systems could be assured. To achieve this goal, an integrative blockchain-enabled method, is proposed by leveraging both asymmetry encryption and camouflage techniques. A real-world case study that protects cyber-physical security of collected stream data in additive manufacturing is provided to demonstrate the effectiveness of the proposed method. The results demonstrate that malicious tampering could be detected in a relatively short time and the risk of unauthorized data access is significantly reduced as well.


Materials ◽  
2018 ◽  
Vol 11 (9) ◽  
pp. 1774 ◽  
Author(s):  
Dongting Wang ◽  
Shangheng Liu ◽  
Mingfa Shao ◽  
Jinghan Zhao ◽  
Yukun Gu ◽  
...  

Hierarchical SnO2 nanocrystallites aggregates (NAs) were prepared with a simple room temperature–based aqueous solution method followed by simple freeze-drying treatment. The as-prepared SnO2 NAs were subsequently combined with SnO2 nanosheet–based structures from the viewpoint of a function-matching strategy, and under an optimized condition, a power conversion efficiency (PCE) of 5.59% was obtained for the resultant hybrid photoanode, a remarkable 60% enhancement compared to that of dye-sensitized solar cells (DSCs) fabricated with bare SnO2 NAs architecture. The significantly enhanced efficiency can be attributed to the combination of the desirable electron transport property obtained by the intentionally introduced SnO2 nanosheets (NSs) and the effectively retained inherent characteristics of SnO2 NAs, i.e., large surface area and strong light-scattering effect. This work provides a promising approach for the rapid development of highly efficient SnO2 photoanode film-based DSCs with the properties of simplicity of operation and control over the photoanode composition.


The growth in world trade and hence the demand for shipping is expected to continue into the 1980s despite the present temporary recession. Many countries in the Mediterranean and Pacific area and in South and Central America see shipbuilding as their way to start along the road to industrial development, and will be favoured by good climatic and labour conditions which can now be joined to imported modern technology. Conventional shipbuilding will therefore grow rapidly in these countries. Western countries will be able to preserve their shipbuilding industries by keeping in the forefront ol technical development and by a rigorous examination of designs from the production point of view, in order to reduce the labour content, and make the management and control simpler. This means changing from a largely labour intensive craft industry to a capital intensive, manufacturing industry. In order to sustain this type of industry long runs of similar ships, standard components, modulai constructions much of it in production lines, using group technology, will be the pattern in the 1980s. Much research and development is already devoted to these techniques and the industry is already at the early stages of changing over to this type of working.


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