Possible Applications of Additive Manufacturing Technologies in Shipbuilding: A Review

3D printing conquers new branches of production due to becoming a more reliable and professional method of manufacturing. The benefits of additive manufacturing such as part optimization, weight reduction, and ease of prototyping were factors accelerating the popularity of 3D printing. Additive manufacturing has found its niches, inter alia, in automotive, aerospace and dentistry. Although further research in those branches is still required, in some specific applications, additive manufacturing (AM) can be beneficial. It has been proven that additively manufactured parts have the potential to out perform the conventionally manufactured parts due to their mechanical properties; however, they must be designed for specific 3D printing technology, taking into account its limitations. The maritime industry has a long-standing tradition and is based on old, reliable techniques; therefore it implements new solutions very carefully. Besides, shipbuilding has to face very high classification requirements that force the use of technologies that guarantee repeatability and high quality. This paper provides information about current R&D works in the field of implementing AM in shipbuilding, possible benefits, opportunities and threats of implementation.

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Additive Manufacturing of a Special-Shaped Energetic Grain and Its Performance

Micromachines ◽

10.3390/mi12121509 ◽

2021 ◽

Vol 12 (12) ◽

pp. 1509

Author(s):

Yongjin Chen ◽

Shuhong Ba ◽

Hui Ren

Keyword(s):

Mechanical Properties ◽

Thermal Decomposition ◽

Additive Manufacturing ◽

3D Printing ◽

Forming Process ◽

Printing Technology ◽

3D Printing Technology ◽

Combustion Performance ◽

Pressurization Rate ◽

Light Curing

In order to solve the problems of the complicated forming process, poor adaptability, low safety, and high cost of special-shaped energetic grains, light-curing 3D printing technology was applied to the forming field of energetic grains, and the feasibility of 3D printing (additive manufacturing) complex special-shaped energetic grains was explored. A photocurable resin was developed. A demonstration formula of a 3D printing energetic slurry composed of 41 wt% ultra-fine ammonium perchlorate (AP), 11 wt% modified aluminum (Al), and 48 wt% photocurable resin was fabricated. The special-shaped energetic grains were successfully 3D printed based on light-curing 3D printing technology. The optimal printing parameters were obtained. The microstructure, density, thermal decomposition, combustion performance, and mechanical properties of the printed grain were characterized. The microstructure of the grain shows that the surface of the grain is smooth, the internal structure is dense, and there are no defects. The average density is 1.606 g·cm−3, and the grain has good uniformity and stability. The thermal decomposition of the grain shows that it can be divided into three stages: endothermic, exothermic, and secondary exothermic, and the Al of the grain has a significant catalytic effect on the thermal decomposition of AP. The combustion performance of the grain shows that a uniform flame with a one-way jet is produced, and the average burning rate is 5.11 mm·s−1. The peak pressure of the sample is 45.917 KPa, and the pressurization rate is 94.874 KPa·s−1. The analysis of the mechanical properties shows that the compressive strength is 9.83 MPa and the tensile strength is 8.78 MPa.

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Preliminary Study on Effects of the Process Parameters on Mechanical Properties in Liquid Holographic Volumetric Additive Manufacturing Process

Volume 2: Processes; Materials ◽

10.1115/msec2019-2917 ◽

2019 ◽

Author(s):

Sagil James ◽

Thilakraj Shivakumar

Keyword(s):

Mechanical Properties ◽

Additive Manufacturing ◽

3D Printing ◽

Manufacturing Process ◽

Material Selection ◽

Primary Source ◽

Limited Range ◽

Printing Technology ◽

3D Printing Technology ◽

Light Beams

Abstract The momentum of the additive manufacturing research is on a spurt. Additive manufacturing, also known as 3D printing process has been attracting the attention of the manufacturing community worldwide over the past decade. The 3D printing technology promises significant advances and applications in the area of automobiles, electronics, and medical devices and so on. However, this technology currently suffers from several limitations including large time consumption, need for support structures and limited range of material selection. This prevents its application in mass production. Holographic 3D printing, also referred to as (volumetric additive manufacturing) process is a very recent technique which uses multiple light beams intensified to form a build volume. A photosensitive liquid resin is solidified using the principle of constructive interference. The single light beam is not enough to produce the required intensity to cure the resin. While the combined interference could generate the required energy. The resulting part is printed in a fraction of seconds at once in contrast with the traditional 3D printing technology. This research studies the feasibility of a novel holographic volumetric additive manufacturing with an ultraviolet source of 365 nm as the primary source of energy. This propels the polymeric photochemical reaction between the monomer molecules. Also, experiments are conducted, incorporating various viscosity levels of the photopolymer material to suppress the oxygen dissolution. At the same time to observe the rate of curing of the photopolymer material. Finally, the mechanical properties of the build volume are analyzed.

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Additive manufacturing of SiBCN/Si3N4w composites from preceramic polymers by digital light processing

RSC Advances ◽

10.1039/c9ra09598e ◽

2020 ◽

Vol 10 (10) ◽

pp. 5681-5689 ◽

Cited By ~ 3

Author(s):

Shan Li ◽

Yubei Zhang ◽

Tong Zhao ◽

Weijian Han ◽

Wenyan Duan ◽

...

Keyword(s):

Mechanical Properties ◽

Additive Manufacturing ◽

3D Printing ◽

Printing Technology ◽

Digital Light Processing ◽

Preceramic Polymers ◽

3D Printing Technology

SiBCN/Si3N4w components with high mechanical properties were manufactured using DLP 3D-printing technology.

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A Review on Additive Manufacturing of Micromixing Devices

Micromachines ◽

10.3390/mi13010073 ◽

2021 ◽

Vol 13 (1) ◽

pp. 73

Author(s):

Marina Garcia-Cardosa ◽

Francisco-Javier Granados-Ortiz ◽

Joaquín Ortega-Casanova

Keyword(s):

Life Cycle ◽

Additive Manufacturing ◽

High Performance ◽

Future Prospects ◽

High Quality ◽

Printing Technology ◽

Wide Range ◽

The Moment ◽

Manufacturing Technologies

In recent years, additive manufacturing has gained importance in a wide range of research applications such as medicine, biotechnology, engineering, etc. It has become one of the most innovative and high-performance manufacturing technologies of the moment. This review aims to show and discuss the characteristics of different existing additive manufacturing technologies for the construction of micromixers, which are devices used to mix two or more fluids at microscale. The present manuscript discusses all the choices to be made throughout the printing life cycle of a micromixer in order to achieve a high-quality microdevice. Resolution, precision, materials, and price, amongst other relevant characteristics, are discussed and reviewed in detail for each printing technology. Key information, suggestions, and future prospects are provided for manufacturing of micromixing machines based on the results from this review.

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Desain dan Pembuatan Prototype Piston Honda MEGAPRO FI Menggunakan 3D Printing

SPROCKET JOURNAL OF MECHANICAL ENGINEERING ◽

10.36655/sprocket.v1i2.184 ◽

2020 ◽

Vol 1 (2) ◽

pp. 81-91

Author(s):

Frince Marbun ◽

Richard A.M. Napitupulu

Keyword(s):

3D Printing ◽

Computer Aided Design ◽

Fused Deposition Modeling ◽

Layer By Layer ◽

Printing Technology ◽

3D Printing Technology ◽

Fused Deposition ◽

Deposition Modeling ◽

Manufacturing Technologies ◽

Aided Design

3D printing technology has great potential in today's manufacturing world, one of its uses is in making miniatures or prototypes of a product such as a piston. One of the most famous and inexpensive 3D printing (additive manufacturing) technologies is Fused Deposition Modeling (FDM), the principle FDM works by thermoplastic extrusion through a hot nozzle at melting temperature then the product is made layer by layer. The two most commonly used materials are ABS and PLA so it is very important to know the accuracy of product dimensions. FDM 3D Printing Technology is able to make duplicate products accurately using PLA material. FDM machines work by printing parts that have been designed by computer-aided design (CAD) and then exported in the form of STL or .stl files and uploaded to the slicer program to govern the printing press according to the design. Using Anet A8 brand 3D printing tools that are available to the public, Slicing of general CAD geometry files such as autocad and solidwork is the basis for making this object. This software is very important to facilitate the design process to be printed. Some examples of software that can be downloaded and used free of charge such as Repetier-Host and Cura. by changing the parameters in the slicer software is very influential in the 3D printing manufacturing process.

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ADDITIVE MANUFACTURING - APPLICATION OPPORTUNITIES FOR THE AVIATION INDUSTRY

Journal of Air Transport Studies ◽

10.38008/jats.v6i2.59 ◽

2015 ◽

Vol 6 (2) ◽

pp. 63-86

Author(s):

Dipesh Dhital ◽

Yvonne Ziegler

Keyword(s):

Additive Manufacturing ◽

3D Printing ◽

Computer Aided Design ◽

Free Form ◽

Aviation Industry ◽

Layer By Layer ◽

Printing Technology ◽

3D Printing Technology ◽

Subtractive Manufacturing ◽

Aided Design

Additive Manufacturing also known as 3D Printing is a process whereby a real object of virtually any shape can be created layer by layer from a Computer Aided Design (CAD) model. As opposed to the conventional Subtractive Manufacturing that uses cutting, drilling, milling, welding etc., 3D printing is a free-form fabrication process and does not require any of these processes. The 3D printed parts are lighter, require short lead times, less material and reduce environmental footprint of the manufacturing process; and is thus beneficial to the aerospace industry that pursues improvement in aircraft efficiency, fuel saving and reduction in air pollution. Additionally, 3D printing technology allows for creating geometries that would be impossible to make using moulds and the Subtractive Manufacturing of drilling/milling. 3D printing technology also has the potential to re-localize manufacturing as it allows for the production of products at the particular location, as and when required; and eliminates the need for shipping and warehousing of final products.

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