Title:
FIBER REINFORCED COMPOSITE MATERIAL PARAMETER IDENTIFYING METHOD BASED ON LASER NONDESTRUCTIVE SCANNING, AND DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/165999
Kind Code:
A1
Abstract:
The invention discloses a fiber reinforced composite material parameter identifying method based on laser nondestructive scanning. The method comprises the following steps: imputing first three order natural frequency, damping ratio and resonance amplitude curve, and setting an identification permissible error value to be 10%, so that fiber longitudinal elasticity modulus E 1, fiber transverse elasticity modulus E 2, shear modulus G 12, Poisson's ratio ν 21, fiber longitudinal loss factor η 22, fiber transverse loss factor η 22, and shear loss factor η 12 are obtained. Also provided is a device for implementing the method. The method combines vibration transmission with laser displacement sensing technology to achieve a one-time measurement of the mechanical properties of the test material in all directions, reducing the associated workload.
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Inventors:
LI HUI (CN)
LIU DONG (CN)
GAO NING (CN)
WANG YUBO (CN)
XUE PENGCHENG (CN)
WEN BANGCHUN (CN)
LIU DONG (CN)
GAO NING (CN)
WANG YUBO (CN)
XUE PENGCHENG (CN)
WEN BANGCHUN (CN)
Application Number:
PCT/CN2017/078513
Publication Date:
September 20, 2018
Filing Date:
March 29, 2017
Export Citation:
Assignee:
UNIV NORTHEASTERN (CN)
International Classes:
G01N29/36; G01N29/04
Foreign References:
| CN104483218A | 2015-04-01 | |||
| CN104897268A | 2015-09-09 | |||
| CN105510435A | 2016-04-20 | |||
| CN103713048A | 2014-04-09 | |||
| US20120166135A1 | 2012-06-28 | |||
| US20150177195A1 | 2015-06-25 | |||
| JPH0735668A | 1995-02-07 | |||
| US7798000B1 | 2010-09-21 |
Attorney, Agent or Firm:
SHENYANG UPDATE INTELLECTUAL PROPERTY AGENCY (CN)
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