The results of test have shown that increase of confining pressure obviously strengthens plasticity and strain hardening property of frozen sandy soil．With increase of confining pres-sure，the ultimate deviator stress strength and axial failure strain gradually increase；With de-crease of temperature，the ultimate deviator stress.

The calculated formula of ultimate strength of shearing stress with experimental determination for metallic materials;

The result of the experiment indicated that the strength limit and elastic modulus of the material can increase after annealing treatment within the temperature range, but at the same time, the material became crisp and its plasticity declined remarkably.

Using thermal strength experiment to test and determine the pivotal parameters such as ultimate strength and thermal stress at the complicated condition of transient heating is very important for reliability estimation,life prediction of aerospace materials and security design of high-speed flight vehicle.

Investigation on the ultimate strength of unidirectional tapes and plain cloth hybrid laminates;

Analysis of ultimate strength and sensitivity for oil tankers based on IACS common rules;

Research development of ultimate strength of hull structure;