A simple and feasible method was used in measuring the rib mark on the parts with GMT (Glass Fiber Mat Reinforced Thermoplastic).

This paper investigates process optimization for the specific rib with section s-3 during the gas-assisted injection molding firstly,which is to get relationship between process parameters and quality evaluations,based on the Taguchi experimental design.

By means of the analyzing for the reason resulting in the welding crack in a strengthening tendon-plate of a pressure vessel,the article puts forward the method that has resolved the problem having common phenomenon in pressure vessel operation and has been proved to be effective through practical application in years.

The influence degree of stiffener parameters to the baffle is studied based on the orthotropic experiment method and finite element method.

As thin-walled bars,stiffeners subjected to the axial pressure in ship panels may trip around their roots.

Based on this classification,the orthotropic plate in structure can be transformed into that in material with different methods, which means the stiffeners are to be converted into the plates added on by a certain method,and in further,it simulates the .

The main defective modes of the strengthening rib are introduced.