Test device for surface deformation and material and test method thereof

Abstract

The invention discloses a test device for surface deformation of a material and a test method thereof, wherein the device comprises a material mechanical property test machine, an infrared fast heating device, a surface deformation optical test system, a temperature collecting device, a vacuum system and a clamp. The clamp fixes a sample in a vacuum chamber of the vacuum system and is connected with the material mechanical property test machine, the infrared fast heating device supplies thermal load for the sample, and the surface deformation optical test system measures the surface deformation of the sample. The device and the test method can simultaneously heat, apply stress and synchronously test deformation field in the surface. The coupling simulation of an aero-engine under service environment with high temperature and loading level, and the surface deformation condition of the structural material with high temperature under the environment are tested.

Description

technical field [0001] The invention belongs to the field of material performance testing, and relates to a material surface deformation testing device and testing method, in particular to a material surface deformation testing device and testing method suitable for high-temperature structural materials used in aero-engines under constant temperature, variable temperature, constant force, and variable force coupling simulation environments. Field deformation testing device and method. Background technique [0002] The service environment of high-temperature structural materials for aero-engines is very harsh, and has the following characteristics: 1) Ultra-high temperature. The general service temperature is 800-1200°C; 2) The heating rate is fast and the thermal cycle is fast. The time required for an aero-engine to start working is counted in seconds, and the general cruising time is 30-60 minutes; 3) The temperature gradient in each direction. Due to the cooling of the ...

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Problems solved by technology

[0004] One of the purposes of the present invention is to provide a material surface deformation testing device, which can simultaneously perform thermal-mechanical coupling loading, and can measure the surface in-plane displacement field in real time as the load changes, which solves the problem of existing high-temperature deformation testing. The method cannot analyze the details of the deformation of the whole field and has limitations of narrow application range. It places the sample in a vacuum chamber for measurement, and adopts the heating method of infrared focused radiation, which solves the problem that the conventional optical measurement method of surface deformation cannot be carried out at high temperature. test questions

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