Testing properties of materials

Question 1

Tensile testing - what is found out

Answer 1

ability to resist scratching or pulling forces

Question 2

Tensile test

Answer 2

clamp material of same length/thickness into a vice and apply weight to unclamped end - see how much load each material can bear with least deflection, less deflection = more tensile

Question 3

Toughness testing - what is found out

Answer 3

how much impact force material can absorb

Question 4

Toughness test

Answer 4

clamp material into vice and hit with a hammer, tough = absorb impact, brittle = bend/shatter

Question 5

Hardness testing - what is found out

Answer 5

abrasive wear and resistance to surface indentation

Question 6

Hardness test (abrasive)

Answer 6

run a file over surface with same force, less scratches = harder

Question 7

Hardness test (resistance)

Answer 7

place a dot punch and hit with a hammer with same force, smaller indent = harder

Question 8

Malleability/ductility testing - what is found

Answer 8

how malleable/ductile a material is

Question 9

Malleability/ductility test

Answer 9

secure piece in a vice, try to bend it 90 degrees, if cracks or surface damage appears on outside = lack of ductility, cracks or surface damage on inside = lack of malleability

Question 10

Corrosion testing - what is found out

Answer 10

rate of corrosion of material when exposed to environment

Question 11

Corrosion test

Answer 11

same size piece is placed outside to be exposed to weather, materials are visually inspected for surface corrosion

Question 12

Conductivity testing - what is found out

Answer 12

testing electrical and thermal conductivity

Question 13

Conductivity test

Answer 13

use a multimeter for electrical tests and a thermometer and heat source for thermal test