The testing technique of ultrasonic lamb wave induced waves is described.

An adjoint way of data sementation and correlation coefficient for ultrasonic lamb wave of the thin-walled pipes with variable wall thickness was put forward,and the online insepection of the thin-walled pipes with variable wall thickness was accomplished well.

A new ultrasonic method using the Lamb wave is presented and its principle is introduced.

Aim at the problem of internal quality testing of high-pressure thin-wall welded steel cylinder pipe workpiece,the advantages of the method of using ultrasonic plate wave are obtained through the comparison of five general nondestructive testing methods by the paper.

The mixture of air and atomized water was used in the experiment instead of steam-water,the separating efficiency of three kind of corrugated plates(without hook,with single hook,with double hook) were measured respectively under various inlet velocity,and the dimensionless formula for predicting the.

To optimize the design,the flow fields of different structures and spaces in the condition of cold and actual operation state of corrugated plates dryer are simulated by the fluent computation code.

Mathe matical model and calculation for heat transfer during condensation on surfaces of corrugated plates;

In the paper,the separation principle,the history and the newly development of the corrugated plates coalescing oil-water separation technology are summarized,discussion on the difficulties and the problems met in the research progress was done,some proposals are also given for the further research as well in the paper.

The paper presents the hasic structure and special features of shell type teat exchangers equipped with corrugated plates.

Based on the basic principles of fluid field and temperature field, internal heat transfer characteristics of the large generator stator with corrugated board is analysis.