scholarly journals Implementation of Computer Aided Engineering for Francis Turbine Development in Nepal

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Ravi Koirala ◽  
Sailesh Chitrakar ◽  
Amod Panthee ◽  
Hari Prasad Neopane ◽  
Bhola Thapa
Keyword(s):  
Computer Aided Design ◽  
Business Models ◽  
Industrial Revolution ◽  
Francis Turbine ◽  
Advanced Manufacturing ◽  
Unit Size ◽  
Computer Aided ◽  
Available Technology ◽  
Manufacturing Technologies ◽  
Aided Design

The expansion of the existing industries involved in the production of components of hydropower to the Francis turbine manufacturer up to 5 MW unit size has been recognized as one of the most promising business models in Nepal. Given the current fact that the development of Francis turbines with the manufacturers of Nepal has not been done yet, due to lack of designing expertise and limitations in the available technology, this paper presents the use of different available manufacturing technologies, which is suitable in the Nepalese hydropower market. This is an experience based paper, in which the advanced manufacturing process implementing Computer Aided Simulation (CAS), Computer Aided Design (CAD), and Computer Aided Manufacturing (CAM) is introduced for turbine manufacturing. Moreover, CAD from Solidworks, 3D printing from Rapid Prototyping Machine (RPM), and manufacturing of three designs by three different methods, dye casting, lost wax casting, and forging in a local workshop, have been described. The outcome of this work is the identification of suitable Francis turbine development methodologies in context of Nepal, incorporating industrial revolution through research based products.

Impact of Advanced Manufacturing Technologies on Productivity of Indian Small & Medium Manufacturing Enterprises

2021 ◽  
Vol 08 (01) ◽  
pp. 23-32
Author(s):  
Divanshu Gupta ◽  
Keyword(s):  
Computer Aided Design ◽  
Manufacturing Industry ◽  
Advanced Manufacturing Technology ◽  
Advanced Manufacturing ◽  
Manufacturing Enterprises ◽  
Advanced Manufacturing Technologies ◽  
Manufacturing Organizations ◽  
Computer Aided ◽  
Manufacturing Technologies ◽  
Aided Design

Advanced Manufacturing Technology (AMT) is becoming a paronomasia in a scenario of today’s manufacturing striding towards Manufacturing 4.0 paradigm. While achieving such objectives, the initial impetus is to be given to reduce the waste arising out of motion and transportation using both hard and soft technologies by management. Right time delivery of product is also enhanced by these strategies, however the research is still lacking in such domains in local enterprises. To check the performance of various tools and strategies in manufacturing organizations, an investigative research was considered necessary using a two-step analysis viz. the organizational imperatives and the competency analysis of the tools deployed towards improvement of former. It was noted that Robotics and Computer-aided design/ computer-aided manufacturing are being fruitfully utilized in manufacturing industry of Punjab. The analysis deployed Reliability analysis including measuring of reliability coefficient, testing of mean difference using ANOVA, descriptive testing and student t-test for the analysis of filled questionnaires. From the investigation, it emerges out that clarity in goals of AMTs is essential for every employee in the organization.

Design and manufacture of components for motor sport using computer-aided design and rapid casting technology

2013 ◽  
Vol 227 (12) ◽  
pp. 2751-2761 ◽  
Author(s):  
Huw Davies ◽  
Alastair Clarke
Keyword(s):  
Rapid Prototyping ◽  
Computer Aided Design ◽  
Advanced Manufacturing ◽  
Motor Sport ◽  
Rapid Casting ◽  
Casting Technology ◽  
Computer Aided ◽  
Manufacturing Technologies ◽  
Aided Design ◽  
Design And Manufacture

That motor sport is synonymous with advanced manufacturing is probably true of the upper echelons such as F1, WRC and ALMS. However, at privateer level, many of the advanced manufacturing technologies, and to an extent many of the more traditional manufacturing technologies, are beyond reach due to a combination of cost and low production volumes. One technology that has the potential to make the transition from the upper echelons to the privateer level is rapid casting technology. Rapid casting combines the advantages of traditional casting, including greater flexibility during the design stage and a more effective structural behaviour, with the requirement for low production numbers synonymous with motor sport. The low-volume element is achieved through the use of rapid prototyping technology to fabricate the high quality and complex patterns used in investment casting with lower cost and shorter leading times. A potential application was investigated through the presented case study. This involved the use of rapid casting, based on the direct rapid prototyping approach, to design and manufacture an upright for a single-seater race car. The use of advanced computer-aided design/computer-aided manufacture techniques and rapid casting technology resulted in an upright that is structurally efficient (<160 MPa main load cases), has low weight (∼900 g) and a reduced number of component parts.

Laser Additive Manufacturing

3D Printing ◽  
2017 ◽  
pp. 154-171 ◽  
Author(s):  
Rasheedat M. Mahamood ◽  
Esther T. Akinlabi
Keyword(s):  
Additive Manufacturing ◽  
Manufacturing Process ◽  
Computer Aided Design ◽  
Selective Laser Sintering ◽  
Three Dimensional ◽  
Cad Model ◽  
Laser Additive Manufacturing ◽  
Computer Aided ◽  
Manufacturing Technologies ◽  
Aided Design

Laser additive manufacturing is an advanced manufacturing process for making prototypes as well as functional parts directly from the three dimensional (3D) Computer-Aided Design (CAD) model of the part and the parts are built up adding materials layer after layer, until the part is competed. Of all the additive manufacturing process, laser additive manufacturing is more favoured because of the advantages that laser offers. Laser is characterized by collimated linear beam that can be accurately controlled. This chapter brings to light, the various laser additive manufacturing technologies such as: - selective laser sintering and melting, stereolithography and laser metal deposition. Each of these laser additive manufacturing technologies are described with their merits and demerits as well as their areas of applications. Properties of some of the parts produced through these processes are also reviewed in this chapter.

scholarly journals 3D Foot Scan to Custom Shoe Last

2010 ◽  
pp. 110-114
Author(s):  
Nibedita Rout ◽  
Asimananda Khandual ◽  
Yi Fan Zhang ◽  
Ameersing Luximon
Keyword(s):  
Computer Aided Design ◽  
New Technologies ◽  
Rapid Development ◽  
New Techniques ◽  
Shoe Last ◽  
Computer Aided ◽  
Design And Manufacturing ◽  
Best Fitting ◽  
Manufacturing Technologies ◽  
Aided Design

Today’s customers not only look at aesthetic beauty but also quality, comfort and fit. New technologies such as digitization and virtual 3D tailoring are providing more options to consumers and designers in designing different styles with the least possible time. Next to the shoe fashion and style, good fit and comfort are the second important determinant in the purchase of footwear. Although there is a need for better fitting, there are no techniques for fit quantification. In traditional shoemaking, the shoe is categorized by the length and width (or girth), hence there is always a mismatch between the complex foot shape and shoe shape. For the industry in order to meet the demand for better footwear, new techniques for fit quantification is required in order to have a direct mapping form foot to shoe-last (a mold for making shoes). In recent years, with the rapid development of computer technology and advanced design and manufacturing technologies such as computer-aided design (CAD) and computer-aided manufacturing (CAM), the manufacturing of customized shoe lasts is becoming possible. Still research is needed to find the best shoe-last. This paper discusses the basic concepts and current methods being followed to convert foot to shoe-last, retrieve the best fitting shoe last based on the 3D foot scan of the customer, and to obtain customized shoe last.

scholarly journals The Relationship between Advanced Manufacturing Technologies and ISO 9001 Certified Enterprises of Mechanical Engineering and Metalworking in Latvia

2018 ◽  
Vol 15 (3) ◽  
pp. 5625-5635
Author(s):  
G. Civcisa
Keyword(s):  
Computer Aided Design ◽  
Mechanical Engineering ◽  
Quality Management System ◽  
Numerical Control ◽  
Iso 9001 ◽  
Advanced Manufacturing ◽  
Advanced Manufacturing Technologies ◽  
Manufacturing Technologies ◽  
Aided Design ◽  
The Relationship

In this study, the relationship between advanced manufacturing technologies (AMTs) and ISO 9001 certification was analyzed. The purpose was to examine the most used AMTs in enterprises of mechanical engineering and metalworking (MEM) sector in Latvia. A literature review was conducted first to determine what technologies are currently considered to be advanced in manufacturing. This article gives detailed information of six types of AMTs, which according to the survey are most frequently applied by MEM sector enterprises in Latvia. The information for this analysis is obtained from the database collected by the Latvian Association of Mechanical Engineering and Metalworking Industries (MASOC). Paper also presents the usage of these technologies by enterprise size class (micro, small, medium and large size). The results of the comparative analysis are discussed, taking into account ISO 9001 Quality Management System (QMS) certification and non-certification factor, respectively. The data sample is based on more than 100 enterprises from MEM sector where the use of AMTs was identified. The findings showed that the most often a computer numerical control (CNC) and computer-aided design (CAD) are used by enterprises of MEM in Latvia. The hypothesised relationship was supported by results which showed that in enterprises that do not have ISO 9001 certification CAD technologies are used in 13 % of cases, while enterprises with ISO 9001 in 20 % of cases, respectively. The CNC is used in 62 % of cases by enterprises without ISO 9001 and in 76 % of cases having ISO 9001 certificate. From above, it could be concluded that in enterprises in which a QMS certified according to the ISO 9001 is introduced, these two above mentioned technologies are used more frequently (7-8 % points more).

scholarly journals What Do You Know?

2004 ◽  
Vol 126 (06) ◽  
pp. 24-26
Author(s):  
Jean Thilmany
Keyword(s):  
Computer Aided Design ◽  
Mechanical Engineering ◽  
Engineering Students ◽  
Design System ◽  
Engineering System ◽  
Surface Design ◽  
Engineering Organizations ◽  
Computer Aided ◽  
Manufacturing Technologies ◽  
Aided Design

This article focuses on the fact that when the time comes for mechanical engineering students to look for their first professional jobs, how much does it count which computer-aided design system they learned in college. In the 1980s, when most engineering organizations were newly acquainted with CAD and computer-aided manufacturing technologies, employers emphasized their need for engineers with very specific knowledge of a particular computer-aided engineering system. Mechanical engineering majors should understand the methods behind solid modeling, such as the principle of orthographic projection. The method of representing objects does not include the viewer’s perspective and can take a bit of practice to pick up. Eifel maintains the CAD programs UGS and I-deas from EDS, and Catia from Dassault Systemes of Paris. Engineers use ICEM Surf from ICEM Ltd. of Southampton, England, for surface design, and Power mill from Delcam Plc of Birmingham, England, for CAM.

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