Scratching experiments were carried out on silicon wafers (100) with diamond styli of nominal 2, 5, and 10 μm radius. Relevant parameters varied and investigated were: load (10 to 100 mN) and depth of penetration, material hardness, electrical current effects and measured resistance, and speed effects. Direct electrical heating of the metallic high pressure phase of silicon during scratching ex...

STATEMENT OF PROBLEM Porcelain fused to zirconia prostheses are widely used. However, porcelain chipping, spalling, fracture, and delamination are common clinical problems. Residual stresses of thermal origin have received attention, but clear data and firing guidelines remain absent. PURPOSE The purpose of this study was to measure the influence of heating and cooling protocols on the streng...

The PV/T-GSHP heating control system is proposed to address the energy consumption problem of building in northern China. By using TRNSYS establish an automatic model, heat pump start/stop, water supply temperature on load side tank, and high return can achieve purpose being saving, providing stable heating, heating. results show that has annual fluctuation range 0.01~0.17 kW period for a typic...

the effect of welding residual stresses that was created in thin infill plate of steel plate shear wall system during constructional processes was studied in this research. residual stresses in a welded structure is the result of the non-uniform expansion and contraction and plastic deformation of the weld and surrounding base metal due to heating and cooling cycle, during welding process, this...