5.3

Question 1

what is the finalchocie of atrials msotly infleucned by

Answer 1

cost
product function
material protperties

Question 2

compressive strength meanign

Answer 2

ability to withstand beign crushed or shrotendd by pushign foces

Question 3

exampel fo when conmpressiev strenth woudl be considered

Answer 3

people sittign on chairs
mutli story car parks

Question 4

tensile strength

Answer 4

ability to reisst stretchign or pulling

Question 5

exampel fo where tensile strength cosnidered

Answer 5

ropes and cables

Question 6

stiffness

Answer 6

ability to reist forces that may bend material

Question 7

where may stfifness be cosnidered

Answer 7

the deck of a bridge
shelf between two suporits

Question 8

hardnsess

Answer 8

ability to withsdtad abrasive wear and scratchign

Question 9

where may hardness be cosndiered

Answer 9

drill bits so they remain sharp etc to do job wihtotu fialirue

Question 10

durability

Answer 10

ability to withsdtand wear and damag and wetaheirn g

Question 11

exampel of where durabiluty cosnidered

Answer 11

kitchen utnesils
outdoor play equipement

Question 12

impact reistsance

Answer 12

ability to absorb foce without fracture

Question 13

example fo where impact resitance considered

Answer 13

drinsk bottle so doesnt smash when dropped

Question 14

plasticity

Answer 14

the ability to be shaped and retain the shape

Question 15

exmaple of where plastsicty woudl eb consdered

Answer 15

glass

Question 16

elastcicity

Answer 16

the ability to be deformed then return to origional shape afetr force remoevd

Question 17

where may elastsictiy be considered

Answer 17

stress releif balls

Question 18

malleability

Answer 18

ability to withsstand deformtion by comrpession withotu crackign

Question 19

where may mealleablity be considered

Answer 19

when heatign and hamemrign metals to shape

Question 20

ductility

Answer 20

the ability to be drawn otu under tension, and reducign shit to a cross section

Question 21

where may ductitlity be consdiered

Answer 21

stretchign material into wire

Question 22

density

Answer 22

how compact shit i s

Question 23

strength to weight ration

Answer 23

comparign weight of structure to the amoutn fo weight it can support withotu failirue

Question 24

where may strength to weight ratio be considered

Answer 24

track cycles
motorsprot products

Question 25

flammability

Answer 25

how eaisly shit burns once beign ignited
and the degree of diffculty required to cause combsusion

Question 26

where may flammabiltiy be considered

Answer 26

sofas
cushios

Question 27

biodegradable

Answer 27

ability for a product to break down and natrually decompose

Question 28

where woudl biodrgadibiltiy be sodneired

Answer 28

single use products such as plastic bags

Question 29

electrcial condcutivity

Answer 29

abiltiy to flow electric current through maetrial withotu resistance

Question 30

where may electrical condcutivity be consdiered

Answer 30

circuitory
electrical casings

Question 31

electrical insualtion

Answer 31

no electrical flow

Question 32

hermal conductitviy

Answer 32

ability to transfer heat across materiasl

Question 33

where woudl themral condcutivity be considered

Answer 33

cooking pans
pan hadnels
insualtion

Question 34

corrosion/degredation resitance

Answer 34

abiltiy to withstand envrioemntal decay

Question 35

where woudl corsosion rstance be cosnderied

Answer 35

outdoor structrues

Question 36

when selectign products what must designers cosndier

Answer 36

prodcut fucntion
maetrail avability adn form
method of manfuacture

Question 37

what does palstsicity mean 2.0

Answer 37

the ease for a a material to be shaped permaneently and retain that shape

Question 38

what are polyclcicl aromatic hydropcarbons

Answer 38

chemcials that occru natruall in shti liek coal, crude oil and gasoline

Question 39

what do polcyclic aromtic hydrop carbosn do when realsed, due to brunign fo stated ubstances

Answer 39

small aprticles in air fuckign lunsg and shit up