Influence of corrugation on intrinsic frequency and critical load of arched-metal roof;

By an analysis on various causes of corrugation, the surface grinder processing and solutions are mainly presented, thus the quality of grindering is guaranteed.

The surface corrugation of Aluminium ingot affect the quality and price.

Analysis and Improving on the Ripple in Surface of Aluminium Ingot;

The ANSYS software is adopted to research a forming of an arched_type trough plate with underside ripple by using finite element method,and the model set up is in accord with actural working.

Ripples have been found at the periphery of damage site using atomforce microscope(AFM),in most cases, several set of ripples appear at the same time in the same area.

The application of hysteresis control in reducing ripple torque of brushless dc motors;

Numerical simulation of ripple harmonics in symmetrical Cockcroft-Walton voltage multiplier;

Research on the ripple of communicative DC switching power;

An EBG Band-stop Filter with Low Ripples in Pass-bands;

This article measures the infra-red transmitted spec- trum of different layer thickness with the same HgCdTe epitaxial layer film,indictes that the phase change layer of the anaphase epitaxial growth existes stratified flow,it is the solidification of the inter- nal wave in the stratified flow that causes the waviness of the epitaxial layer surface.