ArulmiguMeenakshi Amman College of Engineering
Vadamavandal-604410.
Important questions and answers
CME339 -ADDITIVE MANUFACTURING
Prepared by
V.Umapathy,
Prof. /Mech.
S.No. Questions and answers
Unit-I
INTRODUCTION
2 – marks question and answers
1. What is the definition of additive in manufacturing?
Additive manufacturing (AM), also known as 3D printing, is a process used to fabricate a physical object
from a three-dimensional (3D) digital model, typically by laying down and bonding a large number of
successive thin layers of materials
2. Where is additive manufacturing used?
As a manufacturing technology, it finds its applications across various industry segments,
including automotive, aerospace and aviation, healthcare, oil and gas, energy, power generation, fashion,
construction, education, and creative arts, among others.
3. Define rapid manufacturing process.
Rapid Manufacturing Methods. Rapid manufacturing relies on a variety of tools and processes to create
products. These include additive manufacturing, subtractive tools like CNC machining, and rapid tooling
, for traditional manufacturing methods.
4. What is the difference between ISO and ASTM?
ISO certification is typically viewed as an indication of quality and credibility, while simultaneously; ISO
certification can give organizations a competitive advantage and distinction in the international
marketplace. On the other hand, ASTM does not generally require formal certification.
5. What is the meaning of 3D printed building?
A 3D printed home is a residential building constructed by 3D printing technology. The 3D printer uses a
converted blueprint or CAD drawing to create a physical structure by gradually printing the material in
layers. This process is, in most cases, more cost and time efficient than traditional construction techniques.
6. What is the meaning of food printing?
3D food printing is the process of manufacturing food products using a variety of additive manufacturing
techniques. Most commonly, food grade syringes hold the printing material, which is then deposited
through a food grade nozzle layer by layer.
7. What are the future directions in additive manufacturing?
The continued evolution of materials will also play a crucial role in the future of additive manufacturing.
Researchers are developing new materials with enhanced properties, such as higher strength, improved
flexibility, and greater resistance to heat and chemicals.
8. What is the future development of additive manufacturing?
Future trends in AM involve developing recyclable materials and more energy-efficient printing processes
to reduce environmental impact. Automation and AI Integration: As AM becomes more widespread,
automation and artificial intelligence (AI) are playing a larger role.
9. How is additive manufacturing used in the aerospace industry?
NASA has been testing the manufacture of a rocket engine, with the valves, fuel injector and many other
key components being produced with Additive Manufacturing technologies. The combustion chamber is
, the only major component that is not yet produced additively.
10. How is additive manufacturing used in automotive industry?
Additive manufacturing (AM) technology, with its inherent flexibility and extensive material adaptability,
complements imaginative concept cars. It enables the rapid prototyping of numerous components,
translating designers' creative ideas into reality within a short timeframe and at a relatively lower cost.
13 and 15 marks question and answers
11. Explain Rapid prototyping and Rapid Tooling processes.
Rapid prototyping process
Rapid prototyping is a process that uses additive manufacturing, also known as 3D printing, to quickly
create physical models of products. It's a series of steps that involves designing a product in 3D, slicing it
into layers, and then building the layers up to create the final product.
Steps in rapid prototyping :
1. 1. Design: Use a 3D computer-aided design (CAD) program to create a model of the product
, 2. 2. Slice: Mathematically slice the 3D model into layers
3. 3. Build: Use an additive manufacturing machine to build the layers up, starting with the bottom layer and
working your way up
Benefits of rapid prototyping :
1. Design validation: Allows engineers and designers to test their ideas and identify issues early in the
design process
2. Cost savings: Can reduce production costs and the cost of functionality testing
3. Ergonomics testing: Can help ensure the product is comfortable and meets the needs of the user
Types of rapid prototyping
4. Vacuum casting
A technique that involves pouring liquid material into a silicone mold under a vacuum
5. Laminated object manufacturing (LOM)
A process that uses a laser or knife to cut sheets of paper or plastic into the shape of the part.
Rapid prototyping (RP) is a process in which products are made layer by layer. The process starts with
making a three-dimensional (3D) computer model of a product, which is mathematically sliced in a
number of layers. RP machine is used to transform these mathematical layers into physical layers.
Rapid Tooling
Vadamavandal-604410.
Important questions and answers
CME339 -ADDITIVE MANUFACTURING
Prepared by
V.Umapathy,
Prof. /Mech.
S.No. Questions and answers
Unit-I
INTRODUCTION
2 – marks question and answers
1. What is the definition of additive in manufacturing?
Additive manufacturing (AM), also known as 3D printing, is a process used to fabricate a physical object
from a three-dimensional (3D) digital model, typically by laying down and bonding a large number of
successive thin layers of materials
2. Where is additive manufacturing used?
As a manufacturing technology, it finds its applications across various industry segments,
including automotive, aerospace and aviation, healthcare, oil and gas, energy, power generation, fashion,
construction, education, and creative arts, among others.
3. Define rapid manufacturing process.
Rapid Manufacturing Methods. Rapid manufacturing relies on a variety of tools and processes to create
products. These include additive manufacturing, subtractive tools like CNC machining, and rapid tooling
, for traditional manufacturing methods.
4. What is the difference between ISO and ASTM?
ISO certification is typically viewed as an indication of quality and credibility, while simultaneously; ISO
certification can give organizations a competitive advantage and distinction in the international
marketplace. On the other hand, ASTM does not generally require formal certification.
5. What is the meaning of 3D printed building?
A 3D printed home is a residential building constructed by 3D printing technology. The 3D printer uses a
converted blueprint or CAD drawing to create a physical structure by gradually printing the material in
layers. This process is, in most cases, more cost and time efficient than traditional construction techniques.
6. What is the meaning of food printing?
3D food printing is the process of manufacturing food products using a variety of additive manufacturing
techniques. Most commonly, food grade syringes hold the printing material, which is then deposited
through a food grade nozzle layer by layer.
7. What are the future directions in additive manufacturing?
The continued evolution of materials will also play a crucial role in the future of additive manufacturing.
Researchers are developing new materials with enhanced properties, such as higher strength, improved
flexibility, and greater resistance to heat and chemicals.
8. What is the future development of additive manufacturing?
Future trends in AM involve developing recyclable materials and more energy-efficient printing processes
to reduce environmental impact. Automation and AI Integration: As AM becomes more widespread,
automation and artificial intelligence (AI) are playing a larger role.
9. How is additive manufacturing used in the aerospace industry?
NASA has been testing the manufacture of a rocket engine, with the valves, fuel injector and many other
key components being produced with Additive Manufacturing technologies. The combustion chamber is
, the only major component that is not yet produced additively.
10. How is additive manufacturing used in automotive industry?
Additive manufacturing (AM) technology, with its inherent flexibility and extensive material adaptability,
complements imaginative concept cars. It enables the rapid prototyping of numerous components,
translating designers' creative ideas into reality within a short timeframe and at a relatively lower cost.
13 and 15 marks question and answers
11. Explain Rapid prototyping and Rapid Tooling processes.
Rapid prototyping process
Rapid prototyping is a process that uses additive manufacturing, also known as 3D printing, to quickly
create physical models of products. It's a series of steps that involves designing a product in 3D, slicing it
into layers, and then building the layers up to create the final product.
Steps in rapid prototyping :
1. 1. Design: Use a 3D computer-aided design (CAD) program to create a model of the product
, 2. 2. Slice: Mathematically slice the 3D model into layers
3. 3. Build: Use an additive manufacturing machine to build the layers up, starting with the bottom layer and
working your way up
Benefits of rapid prototyping :
1. Design validation: Allows engineers and designers to test their ideas and identify issues early in the
design process
2. Cost savings: Can reduce production costs and the cost of functionality testing
3. Ergonomics testing: Can help ensure the product is comfortable and meets the needs of the user
Types of rapid prototyping
4. Vacuum casting
A technique that involves pouring liquid material into a silicone mold under a vacuum
5. Laminated object manufacturing (LOM)
A process that uses a laser or knife to cut sheets of paper or plastic into the shape of the part.
Rapid prototyping (RP) is a process in which products are made layer by layer. The process starts with
making a three-dimensional (3D) computer model of a product, which is mathematically sliced in a
number of layers. RP machine is used to transform these mathematical layers into physical layers.
Rapid Tooling
