4.1 Properties of materials | IB Design Technology

0.0(0)
learnLearn
examPractice Test
spaced repetitionSpaced Repetition
heart puzzleMatch
flashcardsFlashcards
Card Sorting

1/25

Study Analytics
Name
Mastery
Learn
Test
Matching
Spaced

No study sessions yet.

26 Terms

1
New cards

physical properties

characteristics of materials that can be identified through non-destructive testing

2
New cards

mass

A measure of how much matter is in an object

3
New cards

weight

A measure of the force of gravity on an object's mass

4
New cards

volume

the quantity of 3-dimensional space within an object

5
New cards

density

the mass per unit volume of a material

6
New cards

electrical resistivity

The measure of a material's ability to resist electricity, measure of opposition to the flow of current. (i.e. low resistivity materials will conduct electricity well)

7
New cards

thermal conductivity

a measure of how fast heat is conducted through a slab of material

8
New cards

thermal expansion

a measure of the degree of increase in dimensions (length, area or volume) when an object is heated

9
New cards

hardness

a material's resistance to penetration or scratching

10
New cards

tensile strength

a material's ability to withstand pulling forces

11
New cards

compressive strength

a material's ability to withstand being pressure.

12
New cards

ductility

the ability of a substance to be extruded into a wire

13
New cards

stiffness

a material's resistance to deflection by applied force

14
New cards

toughness

A material's ability to absorb energy, can't be fractured, ripped or torn. example: super alloy - high thermal resistivity

15
New cards

plasticity

a material's ability to be changed in shape permanently

16
New cards

elasticity

ability of a material to return to its original shape after some form of deformation.

17
New cards

Youngs Modulus

a measure of the stiffness of an elastic modulus

18
New cards

stress

force / cross-sectional area (force per unit area by applying tensile force)

19
New cards

strain

extension / stretched length (force per unit length after tensile force is applied)

20
New cards

aesthetic characteristics

features related to the appreciation of beauty of form- taste, smell, appearance, texture

21
New cards

properties of smart materials

photo-chromicity, thermo chromic, thermoelectricity, magneto-rheostatic, electo-rheostatic, piezo electricity, shape memory333

22
New cards

photo-chromicity

a material that has reversible change of colour when exposed to light

23
New cards

thermoelectricity

Electricity generated by heat and differences of temperature in materials,

24
New cards

magneto-rheostatic and electo-rheostatic materials

fluid which can experience dramatic change in their viscosity

25
New cards

Piezo electricity

pressure from deformation gives off small electrical discharge

26
New cards

shape memory

metals that exhibit pseudo-elasticity and shape memory due to rearrangement of molecules in the material without temperature change