1results about How to "Avoid trial failure" patented technology

This invention relates to the technical field of materials mechanics testing, and provides a creep-fatigue testing device and method for determining test parameters for thin-walled tube structures. The device includes: a clamping assembly, a rigid inner plug, a split outer clamp, and a positioning pin; the rigid inner plug is connected to an external loading system via a connecting structure; a temperature control assembly, including a heating mechanism and a cooling mechanism; the heating and cooling mechanisms are arranged along the axial direction of the thin-walled tube structure to form a gauge-length heating zone and a clamping cooling zone; and a measurement assembly for acquiring the axial deformation parameters and temperature parameters of the thin-walled tube structure during the test. This invention balances clamping stability and specimen integrity, allowing direct creep-fatigue testing of thin-walled tube structures while fully preserving the inherent shape, size, and stress distribution characteristics of the thin-walled tube structure; it achieves precise zonal control of damage modes, constructing a differentiated damage system on a single thin-walled tube structure, and accurately controlling the damage evolution rate in each region.