Device for testing breaking tenacity in long and narrow space and using method of device

A fracture toughness, in-space technology, used in measuring devices, using stable tension/pressure to test material strength, strength characteristics, etc., to achieve the effect of simple structure and small size

Active Publication Date: 2017-11-03
XI AN JIAOTONG UNIV
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  • Abstract
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  • Claims
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Problems solved by technology

The magnetic field generated by this type of equipment is located in the cylindrical cavity inside the equipment, and due to the problem of the superconducting coil, the diameter of the cylindrical cavity is generally...

Method used

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  • Device for testing breaking tenacity in long and narrow space and using method of device
  • Device for testing breaking tenacity in long and narrow space and using method of device
  • Device for testing breaking tenacity in long and narrow space and using method of device

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Embodiment Construction

[0036] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0037] Such as figure 1 , figure 2 As shown, a device for fracture toughness testing in a long and narrow space is characterized in that it includes a sleeve 1, a left chuck 2 installed inside the sleeve 1, a right chuck 3 and a slider 4, and a Push rod fixing rod 5 other than 1; as image 3 As shown, the middle part of the sleeve 1 is provided with a functional window 7, the tail end is provided with a sleeve slot 6, the front end is provided with a sleeve thick wall 9, and the outer surface of the sleeve thick wall 9 is provided with a sleeve pin hole 10; as Figure 6 As shown, the front end of the slider 4 is provided with a slider slot 17, and its upper end is provided with a horizontal slot 18 and a vertical slot 19, the horizontal slot 18 and the vertical slot 19 are T-shaped as a whole, and the tail end There are threaded ...

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Abstract

The invention discloses a device for testing breaking tenacity in a long and narrow space and a using method of the device. The device comprises a sleeve, a left clamping head, a right clamping head, a sliding block and pusher fixing rods, the left clamping head, the right clamping head and a tensile sample are mounted inside the sleeve, a functional window used for mounting of the tensile sample and a displacement sensor is arranged in a sidewall of the sleeve, the tensile sample is connected with the left clamping head and the right clamping head through pin bolts, the left clamping head and the right clamping head are connected with the sleeve and the sliding block through mutually-fitted blocking heads and blocking grooves, the sliding block is connected with a force sensor through a bolt, the other end of the sliding block is connected with a matched electric drive pusher, a target card is mounted on the left clamping head and used for providing positioning signals for the displacement sensor. The device has the advantages that by tensioning a test piece and reading values of the displacement sensor and the force sensor, a force-breaking opening displacement (P-V curve) can be drawn to calculate the breaking tenacity of the test piece; a problem in measurement of breaking opening displacement amount in the long and narrow space is solved, and experimental requirements like breaking tenacity measurement in a high-intensity magnetic field condition can be satisfied.

Description

technical field [0001] The invention relates to the measurement of fracture toughness in a composite environment, in particular to a device for testing fracture toughness in a long and narrow space, aiming at the measurement of fracture toughness in a special composite environment, such as a strong magnetic field environment. Background technique [0002] Fracture toughness is an important fracture characteristic attribute of materials. Conventional fracture toughness measurement methods include compact tension measurement and three-point bending measurement. These two conventional measurement methods are generally carried out on a tensile and compressive testing machine. The tensile and compressive testing machine is bulky and can provide a large load, which can meet the measurement of fracture toughness under conventional experimental conditions. However, due to its large size, it cannot be placed in In a strong magnetic field experimental environment, it cannot provide lo...

Claims

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Application Information

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IPC IPC(8): G01N3/08G01N3/06
CPCG01N3/066G01N3/08G01N2203/0003G01N2203/0016G01N2203/0067G01N2203/0617G01N2203/0676G01N2203/0682
Inventor 陈振茂谢铮田淑侠
Owner XI AN JIAOTONG UNIV
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