Other specialized apparatus was used for auxiliary measurements: i) an oven/cooler for measurements of the thermal

expansion coefficient, ii) capacitance measurements between the piston and cylinder for estimates of the crevice width, and iii) ultrasound for measurements of Young's modulus of the piston and cylinder.

The linear

expansion coefficient of GaAs is 6.4 x [10.sup.-6] [K.sup.-1], which is larger than that of Si, resulting in the shrinkage of GaAs being bigger than that of Si during the cooling process and the bonding structure protruding upwards.

Te thermal

expansion coefficient of a material is a measure of the rate of change in volume and therefore density with temperature.

According to obtained results, GF frit has a higher thermal

expansion coefficient (100.5) than S1B frit (64.86).

Thermal

expansion coefficient for Polypropylene (Blend and Virgin).

The thermal

expansion coefficient [alpha] is defined as

For a TBC with lower thermal

expansion coefficient, it is better to have a lower elastic modulus for a durable coating [20],

Caption: Figure 3: Thermal

expansion coefficient as a function of temperature.

Our numerical results for the thermal

expansion coefficient and the heat capacity at constant pressure, the Young modulus, the bulk modulus, the rigidity modulus and the elastic constants of alloy FeC are summarized in tables from Tables 2-5 and are described by figures from

Okaji, "Linear thermal

expansion coefficient of silicon from 293 to 1000 K," International Journal of Thermophysics, vol.

where [epsilon] is the volume strain, [T.sub.0] is the initial temperature, T - [T.sub.0] is the change in temperature, [[beta].sub.b] is the volume thermal

expansion coefficient of solid skeleton, [P.sub.e] is the effective pressure, and [K.sub.d] is the bulk modulus of drainage.

which determines the m-th

expansion coefficient, when [epsilon] exhibits uncertainty.