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DETECTION OF DELAMINATIONS IN 5-HARNESS SATIN GFRP EPOXY LAMINATES USING DIC

Ajmal, OZ, Crocombe, AD, Gower, MRL, Jesson, DA and Ogin, SL (2016) DETECTION OF DELAMINATIONS IN 5-HARNESS SATIN GFRP EPOXY LAMINATES USING DIC In: ECCM17 - 17th European Conference on Composite Materials, 2016-06-26 - 2016-10-30, Munich, Germany.

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Abstract

Digital Image Correlation (DIC) can be used to obtain full-field strain information of specimens under load. Through analysis of the resultant strain-contours, defects such as delaminations in composite materials can be detected based on their effect on the deformation behaviour. This paper focuses on the use of DIC to detect the presence of fully embedded artificial delaminations, introduced during the manufacturing process, inside a flat panel specimen under three-point bending. Two types of delamination insert have been considered: an insert containing two sealed pieces of PTFE, and an insert consisting of a single sheet of PTFE in combination with a stress-raiser. When tested in three-point bending, the position and approximate size of the delaminations were clearly visible due to the presence of a plateaux in the longitudinal surface strain profile. Finite element modelling predictions were in good agreement with the DIC measurements for both types of artificial delamination.

Item Type: Conference or Workshop Item (Conference Paper)
Subjects : Mechanical Engineering
Divisions : Faculty of Engineering and Physical Sciences > Mechanical Engineering Sciences
Authors :
NameEmailORCID
Ajmal, OZUNSPECIFIEDUNSPECIFIED
Crocombe, ADUNSPECIFIEDUNSPECIFIED
Gower, MRLUNSPECIFIEDUNSPECIFIED
Jesson, DAUNSPECIFIEDUNSPECIFIED
Ogin, SLUNSPECIFIEDUNSPECIFIED
Date : 2016
Uncontrolled Keywords : Defects, Damage, Fatigue behaviour, Quasi-static testing
Depositing User : Symplectic Elements
Date Deposited : 19 Oct 2016 11:30
Last Modified : 30 May 2017 13:07
URI: http://epubs.surrey.ac.uk/id/eprint/812501

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