Friday, 14 May 2010

Thursday, 6 May 2010

Metal: Copper ေၾကး



Source: htpp://www.efunda.com

Tuesday, 4 May 2010

Plastic or Polymer: PMMA or Acrylic or Perspex

Metal: Steels

Metal: Titanium

Typical Physical/Mechanical Properties
Density: 4510 kg/m3
Melting Point: 1668 °C
Elastic Modulus: 100-120 GPa
Poisson's Ratio: 0.33
Tensile Strength: 234 MPa
Yield Strength: 138 MPa
Percent Elongation: 54%

Typical Thermal Properties

Thermal Expansion Coefficient: 8-10 × 10-6/K

Acoustic Properties

sound speed : 6070 [m/s]
impedance: 21.6 Mrayls

Monday, 3 May 2010

Metal: Aluminium

Typical Physical/Mechanical Properties
Density: 2600-2800 kg/m3
Melting Point: 660 °C
Elastic Modulus: 70-79 GPa
Poisson's Ratio: 0.33
Tensile Strength: 230-570 MPa
Yield Strength: 215-505 MPa
Percent Elongation: 10-25%


Typical Thermal Properties
Thermal Expansion Coefficient: 20.4-25.0 × 10-6/K

Acoustic Properties
sound speed : 5083 [m/s]
Impedance : 13.77493*10^5 [g/cm^2/s]