Journal article
Study of strain-transfer of FBG sensors embedded in unidirectional composites
INEGI – Instituto de Engenharia Mecânica e Gestão Industrial, Campus FEUP, Rua Dr. Roberto Frias, 400, 4200-465 Porto, Portugal INEGI – Instituto de Engenharia Mecânica e Gestão Industrial Campus FEUP Rua Dr. Roberto Frias 400 Porto 4200-465 Portugal1
INESC Porto – Instituto de Engenharia de Sistemas e Computadores do Porto, Rua do Campo Alegre, 687, 4150-179 Porto, Portugal INESC Porto – Instituto de Engenharia de Sistemas e Computadores do Porto Rua do Campo Alegre 687 Porto 4150-179 Portugal2
FEUP – Faculdade de Engenharia da Universidade do Porto, Rua Dr. Roberto Frias, s/n, 4200-465 Porto, Portugal FEUP – Faculdade de Engenharia da Universidade do Porto Rua Dr. Roberto Frias s/n Porto 4200-465 Portugal3
Optical fibre Bragg grating (FBG) sensors are now quite established and widely used in strain measurements in composites. However, insufficient understanding of the limitations of the embedment and measuring techniques often leads to inaccurate results.This work is a continuation of a novel method to improve the reliability and accuracy of the strain measurements on unidirectional composites using embedded FBG sensors [1].
A new combination of the pair host material/sensor was studied and characterized. Test specimens were manufactured with longitudinally embedded FBG sensors, using a glass/epoxy prepreg system, in order to compare with a carbon/epoxy prepreg system. The combined behaviour of the sensors and the host material was characterized and a procedure to obtain a more accurate strain was defined for this new chosen material.
| Language: | English |
|---|---|
| Publisher: | Elsevier BV |
| Year: | 2013 |
| Pages: | 1006-1010 |
| ISSN: | 18732348 and 01429418 |
| Types: | Journal article |
| DOI: | 10.1016/j.polymertesting.2013.05.006 |
