Low-strain, fixed-point and fixed-energy hammering excitation device for elastic wave measurement, excitation method thereof

A hammer-excited vibration and low-strain technology, which is applied in the generation of ultrasonic/sonic/infrasonic waves, analysis of materials, instruments, etc., can solve the problems of precise hammering and the inability of hammering devices

Active Publication Date: 2018-08-24
ZHEJIANG SCI-TECH UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

[0003] The invention provides a low-strain fixed-point constant-energy hammer vibration excitation device capable of precise hammering for elastic wave measurement, which solves the problem that the adopted hammering device cannot perform precise hammering

Method used

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  • Low-strain, fixed-point and fixed-energy hammering excitation device for elastic wave measurement, excitation method thereof
  • Low-strain, fixed-point and fixed-energy hammering excitation device for elastic wave measurement, excitation method thereof
  • Low-strain, fixed-point and fixed-energy hammering excitation device for elastic wave measurement, excitation method thereof

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Embodiment Construction

[0030] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0031] see figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 with Image 6 , a low-strain fixed-point constant-energy hammer vibration excitation device for elastic wave measurement, including a base 1 , a hammer handle 2 and a cable 3 .

[0032] The base 1 includes a base part 11 , a front frame 12 located at the front end of the base part, and a pressing and fixing plate 13 located at the rear end of the base part. A hammer point aiming frame 15 is movably connected front and rear on the front frame 12 . The front frame 12 is provided with a plurality of tension spring connecting holes 121 distributed along the front and rear directions. One end of the hammer handle 2 is hinged on the base part 11 through a hinge shaft 21 .

[0033] The other end of the hammer handle 2 is connected with a hammer head 4 . Hammer handle 2 is also connecte...

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Abstract

The invention relates to the field of low-strain nondestructive detection field. A low-strain, fixed-point and fixed-energy hammering excitation device for elastic wave measurement comprises a base, ahammer handle and a stay cable, one end of the hammer handle is hinged to the base by a hinge shaft, the other end of the hammer handle is connected with a hammer head, the base is provided with a hammering point aiming frame and a releaser, the hammering point aiming frame and the hammer head are located on the same cylindrical surface centered on a rotating shaft, the hammer handle is connectedwith the base through driving the hammer head to swing toward the hammering point aiming frame by extension springs, one end of the stay cable is fixed to the hammer handle, and the other end of thestay cable is provided with a block cooperating with the releaser. The low-strain, fixed-point and fixed-energy hammering excitation device for elastic wave measurement, capable of performing accuratehammering, is provided in the invention to solve a problem that a hammer device cannot perform accurate hammering.

Description

technical field [0001] The invention relates to the field of low-strain non-destructive testing, in particular to a low-strain fixed-point constant-energy hammer vibration excitation device and vibration excitation method for elastic wave measurement. Background technique [0002] When carrying out low-strain non-destructive testing, tools such as hand hammers and force hammers are generally used to excite vibrations. However, due to individual differences between testers and equipment during the hammering process, it is difficult to accurately control the hammering energy and hammering position. , leading to a certain degree of randomness in the test results. In some occasions where accurate measurement of wave velocity is required, such as using elastic wave velocity for stress state diagnosis of stressed components, the error caused by random factors of hammering will be very large. Contents of the invention [0003] The invention provides a low-strain fixed-point cons...

Claims

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Application Information

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IPC IPC(8): G01N29/34
CPCG01N29/34G01N2291/023
Inventor 俞峰杨予杨博吴希
Owner ZHEJIANG SCI-TECH UNIV
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