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Device and method for testing fracture toughness of solid-ice interface of coating layer material surface under large-area icing condition

A technology for icing conditions and fracture toughness, which is applied in measuring devices, analyzing materials, using mechanical devices, etc., to achieve the effect of simple operation, simple structure and good use effect.

Active Publication Date: 2020-08-14
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are very few studies on low-ice adhesion surfaces with a large area of ​​several square centimeters or even larger icing conditions, especially from the perspective of the fracture toughness of the solid-ice interface to characterize the adhesion of large-area ice layers to the surface of substrate materials. There are few reports on the effect of

Method used

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  • Device and method for testing fracture toughness of solid-ice interface of coating layer material surface under large-area icing condition
  • Device and method for testing fracture toughness of solid-ice interface of coating layer material surface under large-area icing condition
  • Device and method for testing fracture toughness of solid-ice interface of coating layer material surface under large-area icing condition

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Embodiment 1

[0032] Such as figure 1 As shown, a test device for the fracture toughness of the solid-ice interface under the condition of large-area icing on the coating surface, including: a dynamometer 1, a laboratory test bench 2, a clamping device 3, and a high-speed microscopic camera 4; The laboratory test bench 2 is used to place the frozen coating sample horizontally, the clamping device 3 is used to fix the frozen coating sample, and the dynamometer 1 is used to connect the frozen coating sample. The microscope camera 4 is used to observe the fracture behavior between the coating sample surface and the ice layer.

[0033] Such as figure 2 , 3 As shown, the test method for the fracture toughness of the solid-ice interface under the large-area icing condition of the coating surface is carried out by using the aforementioned test device for the fracture toughness of the solid-ice interface under the large-area icing condition on the coating surface, comprising the following steps:...

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Abstract

The invention provides a device and a method for testing fracture toughness of a solid-ice interface of a coating layer material surface under a large-area icing condition. The testing method adopts asingle cantilever beam loading principle, utilizes bending stress of a metal substrate to induce initiation and expansion of microcracks at a solid-ice interface, and aims to observe an interface fracture behavior between the surface of a coating layer material taking a metal as a substrate and an ice layer so as to obtain the interface fracture toughness between the ice layer and the surface ofthe substrate. The method has the advantages that the anti-icing performance of a large-area component coating layer material can be accurately evaluated, operation is easy and convenient, the purposeof objectively evaluating the fracture toughness of a solid-ice interface under a large-area icing condition is achieved, and important significance is achieved for industrial application and development of the anti-icing surface; and the testing device is simple in structure, ingenious in design and easy to operate, and has a good using effect.

Description

technical field [0001] The invention belongs to the technical field of material surface engineering, and relates to a test method for testing and evaluating the fracture toughness of the joint between the surface of a large-area engineering application material and an ice layer interface, and in particular to a solid- Device and method for testing ice interface fracture toughness. Background technique [0002] With the continuous innovation and development of industrial technology, ordinary engineering application materials can no longer meet the requirements of the existing service environment, and there is an urgent need to develop new materials and technologies for various extremely harsh service environments. At the same time, functional application materials for low-temperature and high-humidity service environments have aroused the research interest of researchers from various countries, and some research progress has been made, especially in reducing the adhesion of i...

Claims

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Application Information

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IPC IPC(8): G01N19/04
CPCG01N19/04G01N2203/0091
Inventor 沈一洲陶杰曾朝娇谢欣瑜
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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