Additive Manufacturing Introduction

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What is the primary characteristic that distinguishes Additive Manufacturing from conventional machining?

It is only suitable for simple shapes
It is more time-consuming
It requires a skilled operator
It builds objects one layer at a time (correct)

What is the typical starting point for the Additive Manufacturing process?

A 3D CAD model (correct)
A 2D design model
A physical prototype
A verbal description

What is a common limitation of Rapid Prototyping technologies?

Increased product development time (correct)
High accuracy
Low cost
Easy to operate

What is the main difference between Additive Manufacturing and subtractive processes?

The need for conventional tooling (D) Signup and view all the answers

What is a trend in manufacturing industries that Additive Manufacturing can help address?

Increase in the number of product variants (C) Signup and view all the answers

What is the primary purpose of Rapid Prototyping Technology?

To enable better communication during product development (A) Signup and view all the answers

What is a characteristic of the layers produced in Additive Manufacturing?

They are significantly varied (C) Signup and view all the answers

What is a limitation of conventional machining processes?

They can compromise accuracy (A) Signup and view all the answers

What is the primary material used in Stereolithography (SLA) process?

Liquid photosensitive polymers (B) Signup and view all the answers

What is a characteristic of the surface of parts produced by plastic-based FDM machines?

Slight layering texture (B) Signup and view all the answers

What is the purpose of the ultraviolet oven in the SLA process?

To fully cure the part (A) Signup and view all the answers

What is the appearance of the epoxy resin after full curing?

Transparent with a glass-like finish (B) Signup and view all the answers

What is an advantage of FDM machines?

Machine can be easily set up and used in an office environment (D) Signup and view all the answers

How does the laser beam function in the SLA process?

It traces out the layers of the part (B) Signup and view all the answers

What is a common application of FDM parts?

Fit, form and functional test (A) Signup and view all the answers

What is the state of the acrylate resin during the build process?

Partially cured and rubbery (D) Signup and view all the answers

What is a limitation of FDM process?

Smaller features are difficult to build (B) Signup and view all the answers

What is the purpose of the platform in the SLA process?

To build the part layer by layer (D) Signup and view all the answers

How does the Three Dimensional Printing (3DP) process work?

By depositing a liquid adhesive onto a bed of powder object material (A) Signup and view all the answers

What is the role of the piston in the 3DP process?

To move the powder bed up and down (A) Signup and view all the answers

What happens to the excess liquid after each layer is solidified?

It is removed and rinsed clean (C) Signup and view all the answers

What is the purpose of the binder in the 3DP process?

To bond the powder particles together (B) Signup and view all the answers

What is the characteristic of the material produced by SLA after full curing?

Brittle and can be sanded (D) Signup and view all the answers

What is the final step in the 3DP process?

Elevating the object and brushing away excess powder (C) Signup and view all the answers

What is one of the strengths of the LOM process?

It can produce large parts quickly and relatively cheaply (B) Signup and view all the answers

What is a weakness of the LOM process?

Wooden parts with thin cross sections often have poor strength (D) Signup and view all the answers

What is one of the applications of LOM parts?

Concept modeling (A) Signup and view all the answers

In the FDM process, what is extruded from a fine nozzle?

A filament of heated material (D) Signup and view all the answers

What is the purpose of the second nozzle in the FDM process?

To extrude a different material for support structures (B) Signup and view all the answers

What is one of the materials used in the FDM process?

ABS (P400) (B) Signup and view all the answers

What happens to the support structure in the FDM process?

It is broken away from the part (A) Signup and view all the answers

What is a common use of LOM parts?

Concept modeling and verification (B) Signup and view all the answers

What is the primary advantage of Rapid Tooling over conventional tooling?

Faster tooling time and lower tooling cost (C) Signup and view all the answers

What is the main purpose of SLA 'cages' in spinal disc implant surgery?

To serve as a pre-operative evaluation tool for surgeons (D) Signup and view all the answers

What is the primary characteristic of Rapid Manufacturing?

Fabrication of functional parts directly from a CAD model (B) Signup and view all the answers

What is a common application of Rapid Prototyping technology?

All of the above (D) Signup and view all the answers

What is the main benefit of using layer-manufacturing techniques in Rapid Manufacturing?

Ability to fabricate complex geometries (C) Signup and view all the answers

What is a key limitation of Rapid Tooling?

Tool life is considerably less than for a conventional tool (A) Signup and view all the answers

When is Rapid Manufacturing suitable?

For producing complex geometries with mixed materials (D) Signup and view all the answers

What is the primary purpose of Rapid Prototyping?

To create a prototype for testing and evaluation (A) Signup and view all the answers