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Static indentation damage prefabrication testing 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: 2012-10-03
SHANGHAI JIAO TONG 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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  • Static indentation damage prefabrication testing machine for composite material structures
  • Static indentation damage prefabrication testing machine for composite material structures
  • Static indentation damage prefabrication testing machine for composite material structures

Examples

Experimental program
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Embodiment

[0030] Such as figure 1 As shown, a composite material structure static indentation damage prefabrication test 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, And it is connected with the indenter 7 in transmission, the measurement and control assembly is connected with the indenter feeding assembly 2, and the indenter 7 is aimed at the test piece.

[0031] The support assembly 1 includes a foot 3 , a lower beam 4 , a column 6 and an upper beam 12 , and the lower beam 4 is fixed on the foot 3 and connected to the upper beam 12 through a column 6 . The indenter feeding 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, and is used to measure 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 prefabrication test machine. Background technique [0002] Composite laminated structures are widely used in aeronautical structures, but they are very sensitive to impact loads, and are prone to damage such as fiber breakage, delamination, and matrix cracking, which greatly reduce the bearing capacity of the structure. In aeronautical structural engineering, a large number of Bearing performance testing of composite structures with damage. The research results show (such as Shen Zhen, Yang Shengchun, Chen Puhui's "Experimental Research on the Impact Resistance Behavior and Characterization Methods of Composite Laminates. Journal of Composite Materials, 25(5): 125-133), the The pit is suitable for the evaluation of the damage degree, and the depth of the pit is also an indicator of damage...

Claims

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Application Information

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