3.2.2 Forces and stresses

Question 1

tension

Answer 1

pulling apart

Question 2

compression

Answer 2

squashing

Question 3

bending

Answer 3

both compression and tension

Question 4

shear

Answer 4

forces in opposite directions, parallel to each other

Question 5

torsion

Answer 5

twisting

Question 6

what is improved by different enhancing techniques?

Answer 6

reinforced
stiffened
more flexible

Question 7

bending curves and adding tubes

Answer 7

to stiffen and strengthen eg.corrugated card

Question 8

folding technique

Answer 8

crease to bend and add strength and increase flexibility
eg. corrugated card

Question 9

interfacing technique

Answer 9

additional layers ironed or sewn onto harder structure to maintain strength and rigidity
eg. collars

Question 10

lamination technique

Answer 10

bonding two or more materials together by adding layers for strength and rigidity
eg.plywood layers are stuck at right angles because wood is easier to bend along the grain

Question 11

webbing technique

Answer 11

strong fabric woven into flat strips.
used for items under TENSION such as seatbelts