Improving Functionality

Question 1

What do you do to enhance or strengthen a material?

Answer 1

consider the forces and stresses

consider the dynamic and static forces this give you an idea how much strengthening is required

Question 2

How do designers not waste materiasl,energy and time?

Answer 2

work out the directions and the magnitude of forces that will potentially be applied of all parts of the product

Question 3

What is reinforcing?

Answer 3

way of strengthening a material or an object by adding material to it to improve its ability to withstand force and stress

Question 4

How is a car tyre reinforced?

Answer 4

tread-last for long time and expel water to it grips the roads and resists skidding
steel belts-added to resist punctures from sharp obkevts

Question 5

What does the side wall do on a tyre?

reinforcement

Answer 5

side wall-layer to resist being bumped into kerbs and collapsing under weights of the car

Question 6

What is a composite material and give an example?

Answer 6

when you combine two or more materials permanently

EG-reinforced concrete this is steel and concrete together

Question 7

What are the properties of steel and concrete separately and when combined?

Answer 7

CONCRETE-brittle,can crack
STEEL-bends and flexes
STEEL + CONCRETE-more flex then concrete alone much safer and less prone to failure

Question 8

What are metal rivets?

Answer 8

they are used in jeans and placed were a lot of fabric needs to be stitched together so more strength is needed to increase the overall tear resistance

Question 9

What is the use of metal rivets?

Answer 9

allows the material to cope with added forces of the wearer constantly talking items in and out the pockets

Question 10

What else can be used to strengthen jeans except metal rivets?

Answer 10

additional stitching is added to vulnerable areas such as belt loops and seams

Question 11

What is webbing?

Answer 11

strong fabric woven into strips from yarn which are often made from synthetic fibres such as nylon or very high strength materials \9kevlar)

Question 12

What are the uses of webbing/what are the properties?

Answer 12

USES-seatbelts, straps for securing loads on vehicle and climbing equipment
PROPERTIES-light,strong and flexible

Question 13

How can you improve the strength of materials,fabric and the mechanical and physical properties?

Answer 13

MATERIAL-laminating
FABRIC-interfacing
MECHANICAL $ PHYSICAL-folding and bending

Question 14

What is almination?

Answer 14

bonding two or more materials to improve product strength,stability and flexibility

Question 15

How can wood be laminated?

Answer 15

use a former or mould to shape the material and then applying pressure hold it in its place

Question 16

When is fabric interfacing used?

Answer 16

used in textile garments for an additional layer were extra structure is needed it ensure teh garment sists correctly in position
areas that are commonly interfaced are collars,cuffs and waistbands

Question 17

What is the difference between fusible and sew-in?

Answer 17

FUSIBLE-(iron on) uses heat to bond it to the fabric

SEW-IN-sandwiched between layers of fabric and held into places with stitching

Question 18

Give an example of interfacing?

Answer 18

baseball cap uses a heavy weight interfacing to keep its peak rigid
collar need greater flexibility so light weight interfacing

Question 19

What can be added to material to add strength?

Answer 19

curves,tubes and arches this adds strength while using minimum amount of material

Question 20

Give an example of folding and bending material to add strength?

Answer 20

Harry Thalers pressed chair
a single flat sheet of aluminium has been pressed using a relief before being folded
when folded its strength increases

Question 21

What is a net?

Answer 21

flat 2 dimensional shape that can be folded and glued to form a 3 dimensional shape

Question 22

What is the difference between score lines and cut lines?

Answer 22

CUT LINES:drawn solids and shows were material is cut from

SCORE LINES:dooted lines indicate where product should be folded