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Asphalt concrete electromagnetic type multiaxial fatigue testing machine

An asphalt concrete and fatigue testing machine technology, applied in the field of structural testing, can solve the problem of rare asphalt concrete fatigue testing, and achieve the effects of reducing test costs, reducing test noise, and improving test efficiency

Active Publication Date: 2015-11-25
HOHAI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, after a comprehensive review of the research status of asphalt concrete at home and abroad, most of the current asphalt concrete tests are uniaxial fatigue tests, and asphalt concrete fatigue tests that comprehensively consider the effects of multi-axis and temperature field are still relatively rare.

Method used

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  • Asphalt concrete electromagnetic type multiaxial fatigue testing machine
  • Asphalt concrete electromagnetic type multiaxial fatigue testing machine
  • Asphalt concrete electromagnetic type multiaxial fatigue testing machine

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Embodiment

[0037] Below in conjunction with accompanying drawing and specific embodiment, further illustrate the present invention, should be understood that these embodiments are only for illustrating the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various aspects of the present invention Modifications in equivalent forms all fall within the scope defined by the appended claims of this application.

[0038] Such as figure 1 and figure 2 As shown, the testing machine mainly includes 1 testing machine base, 2 fixed pedestal, 3 movable pedestal, 4 moving frame, 5 first specimen clamp, 7 second specimen clamp, 14 permanent magnet frame, 19 first permanent magnet, 20 The second permanent magnet, 21 the third permanent magnet, 22 the third electromagnet, 36 the first electromagnet, 37 the second electromagnet, 15 temperature control device, wherein: the fixed base 2 is fix...

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Abstract

The invention discloses an asphalt concrete electromagnetic type multiaxial fatigue testing machine including an asphalt concrete specimen clamping mechanism and an electromagnetic loading mechanism on a machine frame, wherein the clamping mechanism can be mounted on the machine frame in a turnover mode and includes a first specimen clamp and a second specimen clamp for clamping two ends of an asphalt concrete specimen respectively, and a rotary shaft is perpendicular to the axial direction of the asphalt concrete specimen; the electromagnetic loading mechanism includes an axial loading device, a bending loading device and a torsion loading device. An electromagnetic principle is adopted for loading, different loading modes can be selected according to actual stress needs of the specimen, and uniaxial or multiaxial fatigue tests of the specimen are carried out. At the same time, the actual test temperature can be controlled according to asphalt concrete characteristics and test requirements.

Description

technical field [0001] The invention relates to an instrument for testing the strength characteristics of solid materials by mechanical stress, in particular to an electromagnetic multi-axis fatigue testing machine for asphalt concrete, which belongs to the field of structural testing. Background technique [0002] Fatigue failure is one of the most important failure forms of engineering structural parts, which endangers safety and causes huge economic losses. As the surface layer of the road structure, the asphalt concrete pavement is completely exposed to the natural environment, and it bears the repeated action of various vehicles and the periodic changes of the external natural environment. Therefore, to study the mechanical properties and fatigue characteristics of asphalt concrete pavement structures, the combined effects of driving loads and environmental temperature changes must be considered at the same time. [0003] However, a comprehensive review of the research...

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Application Information

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IPC IPC(8): G01N3/38
Inventor 谢发祥陈林叶蕾周骜吉伯海傅中秋孔祥明
Owner HOHAI UNIV
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