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An Auxiliary Tooling for Improving the Testing Accuracy of Fracture Toughness of Aluminum Alloy Sheet

A technology of fracture toughness and auxiliary tooling, which is applied in measuring devices, using stable tension/pressure to test the strength and strength characteristics of materials, etc. Simple and reasonable, easy to operate, and the effect of improving detection accuracy

Active Publication Date: 2017-12-08
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] When measuring the fracture toughness of an aluminum alloy sheet, especially a sample such as a thin sheet, due to the uneven force in the pre-stretching process, the aluminum alloy sheet is usually deformed to varying degrees such as bending and twisting, which makes the measurement accuracy difficult. Therefore, it is necessary to install auxiliary tooling for testing accuracy on the measuring tool. Most of the existing auxiliary tooling for testing accuracy is an integrated structure, or the indexing circle positioning method. The existing technology has complex structure, inconvenient installation, and worrying detection accuracy.

Method used

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  • An Auxiliary Tooling for Improving the Testing Accuracy of Fracture Toughness of Aluminum Alloy Sheet
  • An Auxiliary Tooling for Improving the Testing Accuracy of Fracture Toughness of Aluminum Alloy Sheet

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specific Embodiment 1

[0021] Such as figure 1 As shown, an auxiliary tooling for improving the testing accuracy of the fracture toughness of aluminum alloy sheets includes an anti-warping Z-shaped plate 1 and a fixing frame composed of at least three column parts perpendicular to each other; One side of a horizontal plate of the Z-shaped plate, constituting a longitudinal part of a column type mobile handle 4 of the fixed mount 2 is fixed on the horizontal plate. There is a rectangular groove in the center of one side of the edge, which is used to align the center hole of the aluminum alloy sheet for testing. The number of the column-shaped elements perpendicular to the horizontal direction of the horizontal plane of the horizontal plate is at least two. The other side is symmetrically provided with the moving handle 4 along the direction perpendicular to the central axis of the anti-warping Z-shaped plate 1, the other end of the moving handle 4 passes through the fixed bracket 2, and the sliding ...

specific Embodiment 2

[0022] Such as figure 2 Shown is a simulation diagram of the combination of anti-warping Z-shaped plates, and the four anti-warping Z-shaped plates are installed and combined in a rectangular shape. First, apply lubricating oil on the surface of the anti-warping Z-shaped plate of the auxiliary tool that contacts the aluminum alloy sheet style. Teflon plastic film or heavy oil, or both, can be used to reduce the distance between the test aluminum alloy sheet style and the auxiliary tool. friction.

[0023] Install the 8 fixed brackets 2 of the auxiliary tool horizontally on the 4 columns of the fatigue testing machine, make the faces of the 4 anti-warping Z-shaped plates 1 smeared with lubricating oil face each other, and place the sample on the Meanwhile, ensure that the pattern of the aluminum alloy sheet is straight, and adjust the anti-warping Z-shaped plate 1 to move forward and backward by rotating the moving handle 4 to keep it in close contact with the pattern of the ...

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Abstract

The invention relates to an auxiliary tool for improving fracture toughness testing precision of an aluminum alloy sheet. The auxiliary tool comprises anti-warping Z-shaped plates and movable handles. One end of each movable handle is mounted on the corresponding anti-warping Z-shaped plate, and the other ends of the movable handles vertically penetrate through fixed supports. Sliding supporting rods are perpendicular to the movable handles and penetrate through the fixed supports. The four anti-warping Z-shaped plates are mounted and assembled in a rectangular mode for use. A rectangular groove is formed in the center of one face of each anti-warping Z-shaped plate, two movable handles perpendicular to the center axis of each anti-warping Z-shaped plate are symmetrically arranged on the other face of the anti-warping Z-shaped plate, and the other ends of the two movable handles penetrate through the two fixed supports. The sliding supporting rods penetrate through the two fixed supports in the direction perpendicular to the movable handles. The aluminum sheet sample can be located more accurately, it is avoided that an aluminum alloy sheet sample is unevenly stressed in the pre-stretching process, it can be guaranteed that bending, twisting and other deformation cannot happen to the aluminum alloy sheet sample in the testing process, and the measurement precision is guaranteed.

Description

technical field [0001] The invention relates to an auxiliary tool for measuring mechanical parts and a measurement method thereof, in particular to an auxiliary tool for improving the testing accuracy of the fracture toughness of an aluminum alloy thin plate. Background technique [0002] When measuring the fracture toughness of an aluminum alloy sheet, especially a sample such as a thin sheet, due to the uneven force in the pre-stretching process, the aluminum alloy sheet is usually deformed to varying degrees such as bending and twisting, which makes the measurement accuracy difficult. Therefore, it is necessary to install auxiliary tooling for testing accuracy on the measuring tool. The existing auxiliary tooling for testing accuracy is mostly an integrated structure, or the indexing circle positioning method. The existing technology has complex structure, inconvenient installation, and worrying detection accuracy. Therefore, it is necessary to provide an auxiliary tool f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/02G01N3/08
CPCG01N3/02G01N3/08
Inventor 陈军洲伊琳娜李惠曲刘铭汝继刚
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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