A cuneiform water film on the frictional surface between bearing and spindle is formed because the plastic alloy has a high elasticity and low Young's modulus,which lead the water lubricated bearing is easy to be distorted.
A method of measuring small laser beam divergence in ac- cordance to the principle of the wedged plate shearing interference is presented. The results of both experiment and theoretical analysis show that the method has the accuracy of 1%, the angle resolution up to 0.01mrad, and the advantages of simplicity and wide applications.
The improved MoM-PO technique is validated by comparison with exact solutions for a right-angled perfectly conducting wedge at normal incidence.
Initiation and propagation laws of the glass cracks in specimens subjected to normal loading under the action of symmetric wedge
Research results show that initiation and propagation laws are the same with interior symmetric wedge angles of 30°-120°, while the laws are different with interior symmetric wedge angles equal to or more than ≥150°.
One is wedge-shaped Pb islands, and the other is atomically flat Pb thin films.
947 billion tons of sediment have been deposited in the river coast to form the Changjiang subaqueous delta and the Zhejiang-Fujian along-shelf mud wedge.