this is only for shipbuilding industry

1. INDIAN MARITIME UNIVERSITY VISAKHAPATNAM CAMPUS
Gandhigram
Visakhapatnam - 530 005.
PINTU KUMAR ROY
(REG NO-13400052023)
A PRESENTATION FOR 8TH SEMESTER SEMINAR ON TOPIC
‘’APPLICATIONOF 3D PRINTINGIN SHIPBUILDINGINDUSTRY’’

2. CONTENTS
1. INTRODUCTION
2. History
3. Process
4. Application
5. ADVANTAGES
6. Challenges
7. Present usage
8. 3D PRINTERS: FUTURE OF
SHIPBUILDING INDUSTRY

3. INTRODUCTION
3D printing, also known as additive manufacturing (AM), refers to processes used to
create a three-dimensional object in which layers of material are formed under computer
control to create an object. Objects can be of almost any shape or geometry and are
produced using digital model data from a 3D model
The futurologist Jeremy Rifkin claimed that 3D printing signals the beginning of a third
industrial revolution, succeeding the production line assembly that dominated
manufacturing starting in the late 19th century

4. HISTORY
The term 3D printing originally referred to a powder bed process employing
standard and custom inkjet print heads, developed at MIT in 1993 and
commercialized by Z Corporation
In 1981, Hideo Kodama of Nagoya Municipal Industrial Research Institute
invented two additive methods for fabricating three-dimensional plastic
models with photo-hardening thermoset polymer.

5. process
It consists of mainly three parts
1. Modeling
2. Printing
3. Finishing
Modeling- it is an process of preparing geometric data for 3D computer graphics is similar to
plastic arts such as sculpting
Printing-Construction of a model with contemporary methods can take anywhere from several
hours to several days, depending on the method used and the size and complexity of the
model.
Finishing-printing a slightly oversized version of the desired object in standard resolution and
then removing material with a higher-resolution subtractive process can achieve greater
precision
or painting,decorating,etc….

6. CAD model used for 3D printing
3D printing in an time lapse

7. application
1. Casting of Propellers'
2. Direct Metal Printing of Parts
3. Part Repair - Deposition can also be used to repair critical parts. A worn down part is brought in
and new material is deposited on it. Some of this material is then removed and a rejuvenated
part emerges from the machine
4. Preparation of an model of ship for tank testing
5. Small spares can be printed on board the ship instead of carrying it.

8. ADVANTAGES
1. merchant vessels such as container ships, which are frequently
equipped with energy-saving devices, would profit from a more
cost-effective testing process ie. More number of models can be
generated from 3d printing precision of an highest level can be
attained in its geometry.
2. The models for testing can be generated in less time than
conventional method.
3. These can also be carried on board to print an spare parts. It has
been utilized by the US navy warship.
4. The time taken to build any parts such as the propeller requires an
complex process to be followed but in case of 3d printer we need
to put in the cad file model
5. A worn out parts which are rendered waste can be utilized again
by using metal deposition .

9. 6.The parts generated from this process are
highly durable , lightweight and has more
strength for ex- A350 XWB aircraft previous
fuel nozzles were made up of 18 different parts.
Because of 3D printing’s ability to fabricate
complex shapes, 18 components were reduced
to just one.
7.This can be extensively used building in small
crafts such as yacht and
high speed where high strength and less weight
are design factors .
8.Custom parts can be build easily through this process which
are of complex shapes

10. challenges
The biggest challenges over the years and throughout the industry
1. Equipment costs
2. Limited materials available
3. Post-processing requirements
4. Manufacturing costs
5. Lack of expertise and/or training among workforce/employees
6. Limited repeatability
7. Any glitch in cad model can lead to entire printing waste which
Is irreversible in nature.
8. The technology is still not mature

11. Present usage
• marine propulsion system known as a “Pod” or the
azimuth propulsion drive; the pods are typically a
challenge to produce and assemble due to a strut
which needs to be removed before accessing the
gearbox. HSVA used 3D printing to engineer a
redesigned prototype which allowed fast access and
easy repair
• The Chinese navy has already experimented
with metal 3D printers aboard warships for the
creation of spare parts during missions, while the UK
is looking into the 3D printing of reconnaissance
drones on the high seas

12. 3D PRINTERS: FUTURE OF
SHIPBUILDING INDUSTRY
Shipbuilding is the second largest consumer of
lightweight materials
Considering a light weight material like FRP, GRP or
other nano composites as a material, 3D printing
technology can reduce the production cost to a
good extent. In the present scenario we use the
molding process, the tooling costs of the molds is
quite high as compared to 3D printing

13. THANK YOU