Patent Details

Patent ID: CN200910011934.4

A structure of longitudinal strain intelligent monitoring methods for the production of composite laminates

Description: A structure of longitudinal strain intelligent monitoring methods for the production of composite laminates, used to solve the current project polyimide resin or epoxy resin bonded fiber grating sensors in the structure of the surface of the fiber easily damaged in service and The direct buried fiber composite structure, although it will cause to get the package to protect the surrounding stress / strain concentration, the material generated during the curing thermal residual stress will cause the phenomenon chirped fiber grating reflection spectra, the impact of grating strain measurement accuracy and other technical issues, and provides intelligent method of making a composite laminates for structural monitoring of longitudinal strain, the FBG sensors embedded in composite laminates in the field of structural health monitoring instead of conventional strain gauges, through the buried the fiber grating prestressing, reduce the impact of the composite curing residual stress on the fiber grating reflection spectrum, avoid tweeting phenomenon; improved sensor stability and repeatability. Meanwhile composite materials play a protective effect on the package bare FBG good to meet the requirements of the construction of the sensor sensitivity.

Patent Details:

DOI: B29C70 / 54 (2006.01) I; G01B11 / 16 (2006.01) I; B29L9 / 00 (2006.01) N