scholarly journals Potential and Scope of Additive Manufacturing in Aerospace Industry with Reference to India

2019 ◽  
Vol 8 (6S4) ◽  
pp. 1085-1089
Keyword(s):  
Additive Manufacturing ◽  
Labour Force ◽  
Aerospace Industry ◽  
Current Method ◽  
Spare Parts ◽  
Manufacturing Method ◽  
The World ◽  
Cost Of Production ◽  
Production Requirement ◽  
Traditional Manufacturing

Aerospace industry is one of the fastest growing industries in the world. Especially in India, it is estimated to grow in exponential rate owing to the rapid globalization and the fact that India is one of the world centres for tourism and trade. This exponential growth in the field of aerospace industry puts more demand on manufacturing and design of aircraft and its components. Unfortunately, the tradition method on spare parts production for aerospace industry cannot supply the growing demand to its fullest because it is time consuming and the cost of production is very high. Additive manufacturing, being one of the most revolutionary methods of is an appropriate substitute for the traditional manufacturing process in the aerospace industry as mass production becomes cheaper and save much of time. It also provides the flexibility to change the design and manufacturing method of any particular component with most ease at any stage from design to production. Additive manufacturing displays unarguable traits compared to traditional manufacturing in material saving, cost of production, requirement of skilled labour force and time consumption, especially in aerospace industry. However, there is not one single method of designing or producing the required component and this paper intends to classify and discuss each method in details and in comparison with each other. Few methods that are discussed in this paper include EBM, SLM, MD and LMD. In spite of the overwhelming advantage the technology has over the current method, it still faces few challenges to be fully implemented in floor level which is also focused in this paper in particular to India.

scholarly journals MIGRATIONS AS A RESULT OF THE GLOBALISATION

2021 ◽  
Vol 7 (3) ◽  
pp. 9-19
Author(s):  
Marián Mesároš ◽  
Josef Reitšpís
Keyword(s):  
Foreign Capital ◽  
New Technologies ◽  
Home Country ◽  
Labour Force ◽  
Mineral Resources ◽  
Developed Countries ◽  
Spare Parts ◽  
Cheap Labour ◽  
The World ◽  
The Usa

The globalisation of the world economy is a driving force of the development of the individual countries in the world. Mineral resources in some countries are very important for the development of such countries, however they also attract world economies that offer new technologies and new possibilities in the development of the infrastructure. The technological progress of less developed countries also brings undesirable accompanying phenomena, namely the dependence on spare parts, the inability of such countries to carry out an independent research development, and an inconspicuous lifestyle change of the population. Cheap labour force lures foreign capital and later, as a result of the change of political regimes, begins to have enhanced demands, including various trade union demands. This is the moment when the particular government starts being influenced, the population is dissatisfied and the dissatisfaction results in social riots. However, the foreign capital has meanwhile achieved its business interests and that is why it leaves the particular country. Subsequently, this results in internal problems and many times in migrations of the dissatisfied population. Research tools used to write this article was analysis, analysis, synthesis of available information, reports, scientific articles on the subject and subsequent deduction to identify conclusions. Following the latest findings, it takes at least ten years for migrants to start accepting laws and habitual practice of a particular foreign country. The same holds true for migrants from South America who decide to leave their home country to live in the USA. That is why the assimilation problem has to be solved very carefully and, if it is possible, to solve the problems of potential migrants on the territory of their home country.

Additive Manufacturing Process and Their Applications for Green Technology

2019 ◽  
pp. 262-281
Author(s):  
Keshavamurthy R. ◽  
Vijay Tambrallimath ◽  
Prabhakar Kuppahalli ◽  
Sekhar N.
Keyword(s):  
Additive Manufacturing ◽  
Manufacturing Process ◽  
Raw Materials ◽  
Aerospace Industry ◽  
Green Technology ◽  
Manufacturing Processes ◽  
Additive Process ◽  
Industrial Manufacturing ◽  
Manufacturing Techniques ◽  
Traditional Manufacturing

Growth of nature is an additive process that gives sustainable existence to the structures developed; on the other hand, traditional manufacturing techniques can be wasteful as they are subtractive. Additive manufacturing produces almost nil waste and accordingly preserves raw materials resulting in cost reduction for the procurement of the same. It will also cut down on the carbon emissions that are usually generated from industrial manufacturing. Additive printed objects are lighter as well, making them more efficient, especially when used in the automobile and aerospace industry. Further, the intrinsic characteristics and the promising merits of additive manufacturing process are expected to provide a solution to improve the sustainability of the process. This chapter comprehensively reports on various additive manufacturing processes and their sustainable applications for green technology. The state of the art, opportunities, and future, related to sustainable applications of additive manufacturing have been presented at length.

scholarly journals Extrusion-Based Additive Manufacturing of Concrete Products: Revolutionizing and Remodeling the Construction Industry

2019 ◽  
Vol 3 (3) ◽  
pp. 88 ◽  
Author(s):  
Marco Valente ◽  
Abbas Sibai ◽  
Matteo Sambucci
Keyword(s):  
Additive Manufacturing ◽  
Construction Industry ◽  
Industrial Revolution ◽  
State Of The Art ◽  
Additive Technologies ◽  
Construction Sector ◽  
Fourth Industrial Revolution ◽  
The World ◽  
Hardened Properties ◽  
Traditional Manufacturing

Additive manufacturing is one of the main topics of the fourth industrial revolution; defined as Industry 4.0. This technology offers several advantages related to the construction and architectural sectors; such as economic; environmental; social; and engineering benefits. The usage of concrete in additive technologies allows the development of innovative applications and complexity design in the world of construction such as buildings; housing modules; bridges; and urban and domestic furniture elements. The aim of this review was to show in detail a general panoramic of extrusion-based additive processes in the construction sector; the main advantages of using additive manufacturing with the respect to traditional manufacturing; the fundamental requirements of 3D printable material (fresh and hardened properties), and state-of-the-art aesthetic and architectural projects with functional properties.

scholarly journals Additive Manufacturing of Polymer Materials: Progress, Promise and Challenges

Polymers ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 753
Author(s):  
Saad Saleh Alghamdi ◽  
Sabu John ◽  
Namita Roy Choudhury ◽  
Naba K. Dutta
Keyword(s):  
Additive Manufacturing ◽  
Shape Memory Polymers ◽  
Polymeric Materials ◽  
Polymer Materials ◽  
Research Needs ◽  
Future Perspectives ◽  
Responsive Materials ◽  
Manufacturing Method ◽  
Traditional Manufacturing ◽  
Am Processes

The use of additive manufacturing (AM) has moved well beyond prototyping and has been established as a highly versatile manufacturing method with demonstrated potential to completely transform traditional manufacturing in the future. In this paper, a comprehensive review and critical analyses of the recent advances and achievements in the field of different AM processes for polymers, their composites and nanocomposites, elastomers and multi materials, shape memory polymers and thermo-responsive materials are presented. Moreover, their applications in different fields such as bio-medical, electronics, textiles, and aerospace industries are also discussed. We conclude the article with an account of further research needs and future perspectives of AM process with polymeric materials.

scholarly journals Review and New Aspects in Combining Multipoint Moulding and Additive Manufacturing

2021 ◽  
Vol 11 (3) ◽  
pp. 1201
Author(s):  
Thomas Herzog ◽  
Carsten Tille
Keyword(s):  
Additive Manufacturing ◽  
Production Process ◽  
The State ◽  
The Other ◽  
New Production ◽  
Manufacturing Method ◽  
Other Hand ◽  
Function Integration ◽  
Traditional Manufacturing ◽  
Manufacturing Technologies

Additive manufacturing has become a very important manufacturing method in the last years. With additive manufacturing, a higher level of function integration can be achieved compared to traditional manufacturing technologies. However, the manufacturing of larger parts leads to long construction times. A possible solution is the combination of multipoint moulding with additive manufactured form elements. This article reviews the state of technology for multipoint moulding and additive manufacturing. Moreover, the state of technology is analysed to outline the possibilities and challenges of combining both technologies. The review shows that there has been research on different challenges of the new production process. On the other hand, it turns out clearly that there are many open points at the intersections of both technologies. Finally, the areas where further research is necessary are described in detail.

Sugarcane Weevil Borer (Rhabdoscelus Obscurus) in Fiji Islands and Recommendations Towards Its Control

2019 ◽  
Vol 30 (6) ◽  
pp. 261-266
Author(s):  
Danian Singh ◽  
Lionel Joseph ◽  
Zafiar Naaz ◽  
Kelera Railoa
Keyword(s):  
Papua New Guinea ◽  
Current Method ◽  
Crop Damage ◽  
Agricultural Export ◽  
Fiji Islands ◽  
The World ◽  
Raw Sugar ◽  
Viable Method ◽  
Sugarcane Weevil ◽  
Sugarcane Industry

Pests have been a constant threat to agriculture the world over. In the Fiji Islands where the major agricultural export commodity is raw sugar, the Sugarcane weevil borer is one such agricultural pest that poses a real threat to an already ailing industry. The Sugarcane weevil borer (Rhabdoscelus obscure) is a pest originally found in Papua New Guinea whose introduction into Fiji has resulted in crop damage particularly to the soft variety of sugarcane found in Fiji. This review highlights the emergence of the weevil borer and explains a possible control that could be implemented by the Fijian farmers. The current method of control in Fiji uses the split billet trap. While this method has been recognized as an economically viable method of controlling the spread of the weevil borer, it has not been completely effective in eradicating the pest. This paper highlights and puts forth recommendations on other methods which could be used by the sugarcane industry.

Recent Patents on Construction Additive Manufacturing Method

2016 ◽  
Vol 9 (2) ◽  
pp. 94-101 ◽  
Author(s):  
Yuan Chai ◽  
Qing-Hua Qin ◽  
Yi Xiao
Keyword(s):  
Additive Manufacturing ◽  
Manufacturing Method

scholarly journals Additive Manufacturing Under Lunar Gravity and Microgravity

2021 ◽  
Vol 33 (2) ◽  
Author(s):  
B. Reitz ◽  
C. Lotz ◽  
N. Gerdes ◽  
S. Linke ◽  
E. Olsen ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
Spare Parts ◽  
Manufacturing Processes ◽  
Complex Structures ◽  
Lunar Gravity ◽  
Limited Extent ◽  
Test Environment ◽  
Manufacturing Tests ◽  
Laser Experiments ◽  
Materials Used

AbstractMankind is setting to colonize space, for which the manufacturing of habitats, tools, spare parts and other infrastructure is required. Commercial manufacturing processes are already well engineered under standard conditions on Earth, which means under Earth’s gravity and atmosphere. Based on the literature review, additive manufacturing under lunar and other space gravitational conditions have only been researched to a very limited extent. Especially, additive manufacturing offers many advantages, as it can produce complex structures while saving resources. The materials used do not have to be taken along on the mission, they can even be mined and processed on-site. The Einstein-Elevator offers a unique test environment for experiments under different gravitational conditions. Laser experiments on selectively melting regolith simulant are successfully conducted under lunar gravity and microgravity. The created samples are characterized in terms of their geometry, mass and porosity. These experiments are the first additive manufacturing tests under lunar gravity worldwide.

scholarly journals A STRUCTURED APPROACH TO REDUCE DESIGN ITERATIONS IN ADDITIVE MANUFACTURING

2021 ◽  
Vol 1 ◽  
pp. 231-240
Author(s):  
Laura Wirths ◽  
Matthias Bleckmann ◽  
Kristin Paetzold
Keyword(s):  
Additive Manufacturing ◽  
Spare Parts ◽  
Design Guidelines ◽  
Final Part ◽  
Layer By Layer ◽  
Powder Bed ◽  
Batch Sizes ◽  
Manufacturing Technologies ◽  
Structured Approach ◽  
Design Freedom

AbstractAdditive Manufacturing technologies are based on a layer-by-layer build-up. This offers the possibility to design complex geometries or to integrate functionalities in the part. Nevertheless, limitations given by the manufacturing process apply to the geometric design freedom. These limitations are often unknown due to a lack of knowledge of the cause-effect relationships of the process. Currently, this leads to many iterations until the final part fulfils its functionality. Particularly for small batch sizes, producing the part at the first attempt is very important. In this study, a structured approach to reduce the design iterations is presented. Therefore, the cause-effect relationships are systematically established and analysed in detail. Based on this knowledge, design guidelines can be derived. These guidelines consider process limitations and help to reduce the iterations for the final part production. In order to illustrate the approach, the spare parts production via laser powder bed fusion is used as an example.

A review of additive manufacturing applications in ophthalmology

2021 ◽  
pp. 095441192110280
Author(s):  
Arivazhagan Pugalendhi ◽  
Rajesh Ranganathan
Keyword(s):  
Additive Manufacturing ◽  
Treatment Planning ◽  
Physical Object ◽  
Layer By Layer ◽  
Case Examples ◽  
Manufacturing Method ◽  
3D Cad ◽  
Stl File ◽  
Potential Applications ◽  
Manufacturing Applications

Additive Manufacturing (AM) capabilities in terms of product customization, manufacture of complex shape, minimal time, and low volume production those are very well suited for medical implants and biological models. AM technology permits the fabrication of physical object based on the 3D CAD model through layer by layer manufacturing method. AM use Magnetic Resonance Image (MRI), Computed Tomography (CT), and 3D scanning images and these data are converted into surface tessellation language (STL) file for fabrication. The applications of AM in ophthalmology includes diagnosis and treatment planning, customized prosthesis, implants, surgical practice/simulation, pre-operative surgical planning, fabrication of assistive tools, surgical tools, and instruments. In this article, development of AM technology in ophthalmology and its potential applications is reviewed. The aim of this study is nurturing an awareness of the engineers and ophthalmologists to enhance the ophthalmic devices and instruments. Here some of the 3D printed case examples of functional prototype and concept prototypes are carried out to understand the capabilities of this technology. This research paper explores the possibility of AM technology that can be successfully executed in the ophthalmology field for developing innovative products. This novel technique is used toward improving the quality of treatment and surgical skills by customization and pre-operative treatment planning which are more promising factors.

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