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DT > Product Design > Flashcards

Product Design Flashcards

1
Q

Name 2 commercial processes

A

Extrusion and injection moulding

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2
Q

What is injection moulding used for

A

To produce most mass-produced polymer parts

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3
Q

What are common extruded polymer products

A

Plastic pipes, tubes and guttering

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4
Q

What are the two categories of polymers

A

Thermosetting and thermoforming

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5
Q

Name a popular polymer used in school

A

Acrylic

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6
Q

What is tension

A

A pulling force

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7
Q

What is compression

A

A pushing force

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8
Q

What is bending

A

Forces at an angle to the material

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9
Q

What is torsion

A

A twisting force

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10
Q

What is shear

A

Forces acting across the material

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11
Q

What are the 6 r’s

A

Reduce, reuse, recycle, rethink, refuse, repair

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12
Q

What are polymers usually made of

A

Crude oil

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13
Q

What is batch production

A

One group of identical products are made at the same time

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14
Q

What is mass production

A

When the same product is manufactured many times

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15
Q

What is continuous production

A

Many of the same product being made repeatedly

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16
Q

What unit is tolerance measured in

A

mm

17
Q

How do you calculate the range tolerance

A

1% of the size added on and taken away then subtract those 2 numbers

18
Q

Calculate the range tolerance of something that has a length of 1m

A 
1m=1000mm
1%=10mm
1000+10=1010
1000-10=990
1010-990=20mm
Range of tolerance = 20mm
19
Q

What is a smart material

A

Something that changes in response to external stimuli

20
Q

Name a smart material

A

Shape memory alloys, thermochromic pigments, photochromic pigments, quantum tunnelling composite, ferrofluids, polymorph

21
Q

What does CAD stand for

A

Computer aided design

22
Q

What does CAM stand for

A

Computer aided manufacturing

23
Q

Pros of CAD

A

Greater accuracy, images can be viewed from any angle

DT (1 decks)

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