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MATERIAL SCIENCE HONORS Material Properties. What Material Scientists Do.

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Presentation on theme: "MATERIAL SCIENCE HONORS Material Properties. What Material Scientists Do."— Presentation transcript:

1 MATERIAL SCIENCE HONORS Material Properties

2 What Material Scientists Do

3 Physical Properties Melting & Boiling PointsMagnetism Color

4 Density

5 Lab: Density Determination

6 Material Sample Density (g/ml) Material Sample Density (g/ml) AH BI CJ DK EL FM GN Data Chart

7 Lab: Density Determination Material Sample Material Identity Material Sample Material Identity AH BI CJ DK EL FM GN Analysis Chart

8 Density Density = Mass/Volume

9 Physical Properties Viscosity Viscosity is an internal property of a fluid that offers resistance to flow.

10 Thickness

11 Viscosity Determination Calculations Viscosity = п = 2(Δp)ga^2/9v Δp = difference in density between glass marble and test liquid g = rate of free fall = 9.81 m/s^2 a = radius of sphere v = velocity

12 Viscosity Testing

13

14 Viscosity Units ISO International Standards Organization Viscosity Grade Numbers Society of Automotive Engineers Viscosity Grade Numbers SAE

15

16 Lab: Viscosity Determination

17 Viscosity Testing

18 Lab: Viscosity Determination Data Chart TubeTime (s) Red Blue Green Grey Black

19 Lab: Viscosity Determination Calculations TubeISO Red10 Blue32 Green46 Grey Black

20 Lab: Viscosity Explorer

21 Lab: Viscosity Explorer Data Chart Olive Oil TemperatureDrop Time 0°C 10°C 20°C 30°C 40°C 50°C 60°C 70°C 80°C 90°C

22

23 10W-40 10W = Oil’s Viscosity at 0°F 40 = Oil’s Viscosity at 212°F

24

25 Lab: Dilatant Material

26 Dilatant Material

27

28 Silly Putty

29 Automotive

30 Thixotropic

31

32 Construction

33

34 Advanced Thixotropic Metallurgy

35 Military

36

37 Medicine

38

39

40 Lab: Japan Sand

41 Chemical Properties Burning Reaction to Acids & Water Corrosion

42 Thermal Properties Conductivity

43 Lab: Macho Conduction

44 MetalTime (s) Aluminum Brass Copper Steel X Data Chart

45 Thermal Properties Thermal Expansion Conductivity

46 Thermal Expansion

47 Lab: Linear Expansion of a Metal

48 Data Chart Metal SampleExpansion after 10 minutes Aluminum Brass Steel

49 Thermal Properties Thermal Expansion Specific Heat Conductivity

50 Specific Heat 3,470 J/Kg°C 4.187J/Kg°C 0.217 J/Kg°C

51 Lab: Heat Capacity of Metals

52 Data Chart Metal Sample Mass (g) Δtemp (°C) Water Mass (g) Δtemp (°C) Silver20.030.0 Gold20.030.0 Copper20.030.0 Iron20.030.0 X20.030.0 Y20.030.0

53 Lab: Heat Capacity of Metals Calculation Table Metal Sample Heat Gained (joules) Heat Lost (joules) Specific Heat (J/g x K) Silver Gold Copper Iron X Y

54 Lab: Heat Capacity of Metals Calculations Heat Energy Gained by Water = Heat Energy Lost by Metal Heat Gained by Water = Mass X Δtemp X 4.18 Specific Heat of Metal = Heat Energy Gained Mass X Δtemp

55 Mechanical Properties Hardness Workability

56 StrengthElasticity

57 Elasticity is not Flexibility

58 Elasticity is not Stretch-ability

59 Elasticity A material’s ability to return to its original shape after being deformed.

60

61

62 Vocabulary

63 Deformation Change in shape of an object.

64 Strain

65 Stress Applied Force / Original Area

66 Tension & Compression

67 Shear When 2 forces, acting like a pair of shears, cut a body between them.

68 Shear Testing

69 Hydrostatic Stress unilaterally applied to an object.

70 Material Testing Device Extensometer

71 Extensometer An extensometer measures the elongation of a material while applying tension.

72 Instrom

73

74

75 Stress Strain Curve

76 Elastic Limit

77

78 Lab: He Ain’t Heavy, He’s My Smurf

79 Data Chart StressStrain

80 Young’s Modulus

81 Lab: Youngs’ Modulus of a Spring

82 Data Chart StressStrain

83 Stress Strain Curve

84 Tensile Strength Tensile strength is defined as the highest stress a material can withstand before failure occurs.

85 Ultimate Stress

86 Composite Material Testing Fiberglass, Kevlar & Carbon Fiber

87

88 Fiberglass

89 Kevlar

90 Carbon Fiber

91 Lab: Elastic Limit & Ultimate Stress

92 Data Chart StressStrain

93

94 Stress Strain Ceramics Metals Polymers Stress Strain Curve Interpretation Demo

95 Ductility Ductility is measured by the amount of elongation that can be applied to a material before failure occurs.

96

97 Toughness Toughness is defined as the total area under the stress strain curve. It indicates the amount of energy absorbed before failure.

98

99 Which Material Is Stronger? Which Material Is Tougher? Which Material Is More Ductile?

100 Stress Strain Curve Interpretation Construction Materials Stainless Steel

101 Stress Strain Curve Interpretation Anisotropic Behavior of Bone

102 Lab: Is It Copper?

103 Copper Data Chart StressStrain

104 Lab: Is It Copper? Color Metal Data Chart StressStrain

105 Creep Demo The deformation that occurs at elevated temperature under constant load.

106 Testing Energy Absorption

107 Coefficient of Restitution

108

109 Lab: Core of Restitution

110 BallDrop HeightRebound HeightCOR Soccer Golf Tennis Basketball Racket Play Ping Pong Wiffle Softball Baseball Happy Ball Sad Ball Data Chart

111 Friction Force that opposes motion.

112 Resistance caused by 2 objects in contact with each other.

113 Static Friction Friction between 2 nonmoving objects.

114 Coefficient of Static Friction

115 Coefficient Determination µ static = tan (angle of tilt)

116 Lab: Static Friction

117 Type of Footwear Angle of Elevation Coefficient of Static Friction Data Chart

118 Sliding Friction Kinetic Friction

119 Friction between moving object(s).

120 Coefficient of Kinetic Friction

121

122 Lab: Kinetic Friction

123 Lab: Sliding Friction Surface Table Top F (gravity) (N) F (friction) (N) Coefficient of Sliding Friction Wood Sandpaper Cardboard Plastic Data Chart

124 Friction Tester

125 Color, Density, Size, Magnetism, Melting and Boiling points, Crystal Structure, Luster, Viscosity Workability, Brittleness, Hardness, Elasticity, Plasticity, Toughness, Strength Conductivity, Specific Heat, Thermal Expansion Burning Reaction to Acids/Water Corrosion/Oxidati onReduction Properties of Materials Chemical Properties Physical Properties Thermal Properties Mechanical Properties

126 P.U.M.A. Bowling

127 Object of the Game In this activity, you will be bowling with words.

128 I F I C A R T A L I Each of the ten pins shown is a letter.

129 I F I C A R T A L I If You Make a 10 Letter Word A R T I F I C I A L

130 You have a STRIKE!

131 I F I C A R T A L I If You Make 2 Words Using All 10 Letters..

132 You may use SCIENCE & NONSCIENCE words!

133 Frame 1 S E I T R E P O R P

134 P R O P E R T I E S

135 Frame 2 N O I T M O C S U B

136 C O M B U S T I O N

137 Frame 3 C Y I T S A L T I E

138 E L A S T I C I T Y

139 Frame 4 S R E R C T U T U S

140 S T R U C T U R E S

141 Frame 5 S O I T R A N O B P

142 A B S O R P T I O N

143 Frame 6 M I E A T V U O T O

144 A U T O M O T I V E

145 Frame 7 L L E T A B B S A K

146 B A S K E T B A L L

147 Frame 8 C Y I T N L N D A A

148 D I L A N T A N C Y

149 Frame 9 R C I T L E E A L C

150 E L E C T R I C A L

151 Frame 10 H E C M I N A A C L

152 M E C H A N I C A L

153 O R I T S U L A N S

154 I N S U L A T O R S

155 M E A T R Y G L L U

156 M E T A L L U R G Y


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