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Portable multi-measurement-parameter low-speed impact tester

A technology for measuring parameters and low-speed impact, which is applied to measuring devices, instruments, scientific instruments, etc., and can solve the problems of large size and damage of test pieces

Inactive Publication Date: 2012-07-04
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the bench-top impact testing machine can be used for test piece level test pieces, but for large-scale composite material structures, it is usually inconvenient to use the bench-top material impact testing machine due to the need to test during the test or the size of the test piece is large. Damage prefabrication anywhere in the structure

Method used

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  • Portable multi-measurement-parameter low-speed impact tester
  • Portable multi-measurement-parameter low-speed impact tester
  • Portable multi-measurement-parameter low-speed impact tester

Examples

Experimental program
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Effect test

Embodiment 1

[0018] Such as figure 1 As shown, the portable low-speed impact testing machine of this embodiment includes: a support device 14, a falling weight impact measurement assembly 15 and an anti-secondary impact device 16, wherein: the falling weight impact measurement assembly 15 is arranged in the support device 14 and is connected to the support device 14 Connection, the anti-secondary impact device 16 is connected with the support device 14 .

[0019] The supporting device 14 includes: a guide cylinder 9 and a support foot 11 , wherein: the guide cylinder 9 is fixedly connected with the support foot 11 , and the bottom of the guide cylinder is connected with a secondary impact prevention device 16 .

[0020] The falling weight impact measurement assembly 15 includes: an impact head 1, a force sensor 2, a force sensor joint 3, a drop weight 4, a grid plate 12, an optical fiber sensor 13 and an optical fiber sensor bracket 10; wherein: the impact head 1, the force sensor 2. The ...

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Abstract

The invention relates to a portable low-speed impact tester in the technical field of installing equipment of an impact tester, which comprises a supporting device, a falling weight impact measurement assembly and a second-impact-resisting device. The falling weight impact measurement assembly is arranged in the supporting device and connected with the supporting device, and the second-impact-resisting device is connected with the supporting device. Compared with the prior art, the portable multi-measurement-parameter low-speed impact tester is simple in integral structure, convenient to move and capable of measuring impact force, impact speed and rebound speed, is applicable to low-speed impact testing of large-scale structural parts, and can achieve collection of experiment data in an impact process.

Description

technical field [0001] The invention relates to a device in the technical field of impact testing machines, in particular to a portable low-speed impact testing machine capable of measuring various impact parameters. 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 Therefore, it is necessary to carry out the corresponding impact damage prefabrication. [0003] According to the ASTM measurement standard D7136 / D7136M-05, the drop weight test method for the impact of a class of composite materials is specified, and the requirements for measuring or calculating physical quantities such as impact force, impact energy and rebound velocity are proposed, and the test equipment needs to ...

Claims

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Application Information

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IPC IPC(8): G01N3/303
Inventor 于哲峰汪海曹翔
Owner SHANGHAI JIAO TONG UNIV
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