A static indentation damage prefabrication test machine for composite material structures

A composite material and static indentation technology, which is applied in the direction of testing the strength of materials by applying repetitive force/pulsation force, and testing the strength of materials by applying stable tension/pressure, which can solve problems such as large structural deformation

Inactive Publication Date: 2015-09-09
SHANGHAI JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, for large-scale composite structures, due to the difficulty of installation and large structural deformation, it is difficult to use a general-purpose desktop static testing machine for static indentation test and measurement, and special equipment is required to complete it.

Method used

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  • A static indentation damage prefabrication test machine for composite material structures
  • A static indentation damage prefabrication test machine for composite material structures
  • A static indentation damage prefabrication test machine for composite material structures

Examples

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Embodiment

[0030] Such as figure 1 As shown, a composite material structure static indentation damage prefabricated testing machine includes a support assembly 1, an indenter 7, an indenter feed assembly 2 and a measurement and control assembly. The indenter feed assembly 2 is connected to the support assembly 1. It is connected to the indenter 7 in transmission, the measurement and control assembly is connected to the indenter feed assembly 2, and the indenter 7 is aligned with the test piece.

[0031] The supporting assembly 1 includes a supporting leg 3, a lower beam 4, a column 6 and an upper beam 12. The lower beam 4 is fixed on the supporting leg 3 and connected to the upper beam 12 through the column 6. The pressure head feed assembly 2 includes a displacement sensor 5, a force sensor 8, a lifting beam 9, a driver 10, and a screw 14. The displacement sensor 5 is fixed on the lower beam 4 for measuring the surface of the test piece relative to the lower beam 4, the force sensor 8 is c...

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Abstract

The invention relates to a static indentation damage prefabrication testing machine for composite material structures, which comprises a supporting component, a pressure head, a pressure head feeding component and a measuring and controlling component, wherein the pressure head feeding component is connected with the supporting component and further in transmission connection with the pressure head; the measuring and controlling component is connected with the pressure head feeding component; and the pressure head is aligned with a test piece. Compared with the prior art, the static indentation damage prefabrication testing machine has a simple integral structure, is convenient to move and is suitable for prefabricating static indentation damages of the large-scale composite material structures.

Description

Technical field [0001] The invention relates to a composite material structure static indentation test technology, in particular to a composite material structure static indentation damage prefabricated test machine. Background technique [0002] Composite material laminated structure is widely used in aviation structure, but it is very sensitive to impact load, it is very easy to cause damage such as fiber fracture, delamination and matrix cracking, which greatly reduces the load-bearing capacity of the structure. In aviation structure engineering, a lot of Test work of bearing performance of composite structure with damage. The research results show (such as Shen Zhen, Yang Shengchun, Chen Puhui "Experimental research on the impact resistance behavior and characterization methods of composite laminates. Journal of Composites, 25(5): 125-133), composite materials are generated after impact The pits are suitable for the evaluation of the degree of damage. At the same time, the d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/16G01N3/34
Inventor 于哲峰高尚君汪海
Owner SHANGHAI JIAOTONG UNIV
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