In this paper,according to the test results,the functional relationship between the surface hardness value (HV)and the load for nitrided and nitrocarburized layer was studied by regression analysis.

Field pressure test of submarine pipeline system;

Fuzzy Reliability of the Static Strength of the Thin-Wall Internal Pressure Cylinders at Pressure Tests;

Reliability analysis of steel thin wall cylinder during pressure test;

A historical review of mechanical tests for spacecraft

Discussion on vessel flange intensity under the test pressure;

In this paper, by using reliability design methods, the test pressure of ultrahigh cylinder is studied.

It analyses stress sustained by pipe during hydrostatic test and briefly introduces calculation formula deduced process of test pressures.