Instrument for testing elasticity modulus of laminated wooden beam

An elastic modulus, glulam technology, applied in instruments, using repetitive force/pulse force to test the strength of materials, measuring devices, etc. Quick and easy effects

Inactive Publication Date: 2015-04-01
CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above traditional methods require fixing and loading, so the on-site testing is extremely inconvenient, the testing time is long and the calculation is complicated
At the same time, excessive loading may cause irreversible damage to the glulam beams, which will greatly endanger the safety of the project.

Method used

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  • Instrument for testing elasticity modulus of laminated wooden beam
  • Instrument for testing elasticity modulus of laminated wooden beam
  • Instrument for testing elasticity modulus of laminated wooden beam

Examples

Experimental program
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Embodiment Construction

[0029] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0030] Such as figure 1 with figure 2 As shown, the elastic modulus tester of the glued wood beam of the present invention, its principle is to adopt the vibration non-destructive detection method to measure the natural frequency of the glued wood beam 14, and automatically calculate its elastic modulus value according to the relevant parameters, there are several numbers on the glued wood beam 14 Strip seam 13. The glued wood beam elastic modulus tester of the present invention comprises the vibration pickup sensor 9 installed on the measured object and the data acquisition instrument 3 for collecting and displaying, the glued wood beam 14 is the measured object, and the vibration pickup sensor 9 is fixed on the glued wood On the beam 14, it vibrates with the vibration of the glued wood beam 14. The vibration pickup sensor 9 tran...

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PUM

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Abstract

The invention discloses an instrument for testing elasticity modulus of a laminated wooden beam. The instrument comprises a collecting vibration frequency sensor and a data acquisition instrument for acquiring display data, wherein the collecting vibration frequency sensor is fixed on the laminated wooden beam and comprises an acceleration sensor and a charge amplifier, the acceleration sensor is used for converting vibration of the laminated wooden beam into a charge signal to be output, and the charge signal is converted into a voltage signal by the charge amplifier and is output to the data acquisition instrument; and the data acquisition instrument performs conversion and analysis according to the acquired data signal and displays a vibration curve and inherent frequency. The instrument for testing elasticity modulus of the laminated wooden beam has the advantages of simple and compact structure, portability, simple testing principle, high testing accuracy, stability, reliability and the like.

Description

technical field [0001] The invention mainly relates to the field of testing equipment for material engineering applications, in particular to equipment for testing the elastic modulus of glued wood beams. Background technique [0002] In the engineering application of materials, the elastic modulus of materials plays an important role in the utilization, modification and research of microstructure of materials. At present, the research technology on the elastic modulus of wood is still relatively backward, and it is mainly aimed at boards. [0003] The elastic modulus of glulam beams is an important indicator to reflect the overall quality and mechanical properties of glulam beams, but so far there are few researches on the testing methods of glulam beams at home and abroad. The method for measuring the elastic modulus of glued wood beams in the prior art is mainly the standard static method. The method is as follows: at the two ends of the glued wood beam, the disturbance...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/32G01H11/08
Inventor 王解军曹龙夏滴洋余玲玲刘艳格
Owner CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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