Method for detecting high temperature thermal shock resistance of composite material

A technology for composite materials and thermal shock resistance, which is applied in the thermal analysis of materials, analyzing materials, and testing the strength of materials by applying stable tension/pressure, which can solve the problems of long cycle time, high cost, and difficult thermal shock resistance performance assessment. , to achieve the effect of simple equipment, simple assessment method and low assessment cost
CN109521040AInactive Publication Date: 2019-03-26AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
12 Cites 3 Cited by

Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
Publication Date
2019-03-26
Estimated Expiration
Not applicable ยท inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention relates to a method for testing high temperature thermal shock resistance of a composite material. The method comprises the steps of: (1) fixing a test sample in a region formed by an induction coil of a high frequency induction heating device in a surrounding manner to ensure that the sample testing area is located at the center position of the region formed by an induction coil ina surrounding manner; (2) aligning a detection point of an infrared thermometer with the center position of the sample testing region, connecting the infrared thermometer with a computer signal collecting system and recording the temperature change of the sample by utilizing the computer signal collecting system; (3) turning on the high frequency induction heating device, adjusting the surface temperature of the sample through a power regulator of the high frequency induction heating device, preserving the temperature after the temperature is adjusted to the needed temperature, turning off thehigh frequency induction heating device after the heat preservation is finished and cooling; and (4) repeating the step (3) according to the test requirements to complete the high temperature thermalshock resistance testing of the composite material. The method has the beneficial effects that the temperature can be rapidly increased to above 1500 DEG C; the adopted equipment is simple; the assessment method is simple; and the cost is low.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the technical field of material performance testing, in particular to a method for testing the high temperature thermal shock resistance performance of composite materials. Background technique

[0002] Carbon fiber toughened ceramic matrix composites (such as C / SiC, C / ZrC and multi-component ceramic matrix) have the characteristics of low thermal expansion coefficient and moderate elastic modulus, so they have excellent thermal shock resistance and are mainly used in aerospace High temperature thermal structural materials in the field.

[0003] At present, the evaluation methods for high temperature oxidation resistance of such materials mainly include oxygen-acetylene flame ablation, plasma arc ablation and combustion wind tunnel. The above three methods can be used for material screening and performance comparison. Among them, the basic principle of oxygen-acetylene flame ablation is: use the oxygen-acetylene flame flow as ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More