Elastic constants determination of composite plates using measured strains

C. Y. Huang, Tai-Yan Kam*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

A strain-based elastic constant identification method is proposed to determine the elastic constants of fiber-reinforced composite rectangular laminates using three measured strains of the plates subjected to uniaxial load testing. In the proposed method, the measured normal strains in 0°, and 45°, and 90° directions, respectively, of the plate made of one composite material subjected to uniaxial tensile testing are used to identify four elastic constants of the constituent composite material via a two-level optimization approach. The objective function used for constructing the two-level optimization problem consists of the sum of the differences between the experimental and theoretical predictions of the three strain components and a strain restraining function, which is used to help even up the effects of the measured strains on the identified elastic constants. The accuracy of the proposed method has been verified via an experimental approach.

Original languageEnglish
Title of host publicationStructural and Smart Materials II
EditorsTei Woo Chiat
PublisherTrans Tech Publications Ltd
Pages87-91
Number of pages5
ISBN (Print)9783035712285
DOIs
StatePublished - 1 Jan 2018
Event4th International Conference on Mechanical Structures and Smart Materials, ICMSSM 2018 - Shenzhen, China
Duration: 22 Sep 201823 Sep 2018

Publication series

NameMaterials Science Forum
Volume943 MSF
ISSN (Print)0255-5476

Conference

Conference4th International Conference on Mechanical Structures and Smart Materials, ICMSSM 2018
CountryChina
CityShenzhen
Period22/09/1823/09/18

Keywords

  • Composite plate
  • Elastic constants identification
  • Strain analysis

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