Industrial and Product Design Industrial and Product Design Materials & Manufacturing 2

Question 1

What is the primary purpose of a 'design for assembly' (DFA) analysis?

Accepted Answer

Reduce the number of parts and simplify assembly steps

Answer

DFA focuses on minimizing the number of components and simplifying how they fit together to reduce assembly time and cost.

Question 2

Which metal alloy is most commonly used in aircraft structures due to its high strength-to-weight ratio?

Accepted Answer

Aluminum alloy

Answer

Aluminum alloys, particularly 7075 and 2024 series, are widely used in aerospace because they offer excellent strength while remaining lightweight.

Question 3

What is 'tolerancing' in product design and manufacturing?

Accepted Answer

Specifying acceptable variation in a part's dimensions

Answer

Tolerancing defines the allowable range of dimensional variation for a part so it can be manufactured consistently and still function correctly.

Question 4

Which rapid prototyping technology builds parts layer by layer using a UV-cured liquid resin?

Accepted Answer

Stereolithography (SLA)

Answer

SLA uses a UV laser to cure liquid photopolymer resin layer by layer, producing highly detailed parts with smooth surfaces.

Question 5

What does 'anodizing' do to an aluminum part?

Accepted Answer

Electrochemically thickens the natural oxide layer for protection

Answer

Anodizing is an electrochemical process that grows a thicker, durable aluminum oxide layer on the surface, improving corrosion and wear resistance.

Industrial and Product Design Practice Test