Experimental study on behavior of GFRP stiffened panels under compression

Pradeep Kankeri; P. K. Ganesh Mahidhar; S. Suriya Prakash; M. Ramji

doi:10.1117/12.2077093

4 March 2015 Experimental study on behavior of GFRP stiffened panels under compression

Pradeep Kankeri, P. K. Ganesh Mahidhar, S. Suriya Prakash, M. Ramji

Proceedings Volume 9302, International Conference on Experimental Mechanics 2014; 93021O (2015) https://doi.org/10.1117/12.2077093
Event: International Conference on Experimental Mechanics 2014, 2014, Singapore, Singapore

Abstract

Glass Fiber Reinforced Polymer (GFRP) materials are extensively used in the aerospace and marine industries because of their high strength and stiffness to weight ratio and excellent corrosion resistance. Stiffened panels are commonly used in aircraft wing and fuselage parts. The present study focuses on the behavior of composite stiffened panels under compressive loading. With the introduction of stiffeners to unstiffened composite plates, the structural stiffness of the panel increases resulting in higher strength and stiffness. Studies in the past have shown that the critical structural failure mode under compressive loading of a stiffened composite panel is by local buckling. The present study attempts to evaluate the mechanical behavior of composite stiffened panels under compression using blade stiffener configuration and in particular on the behavior of the skin- stiffener interface through experimental testing. A novel test fixture is developed for experimental testing of GFRP stiffened panels. A non-contact whole field strain analysis technique called digital image correlation (DIC) is used for capturing the strain and damage mechanisms. Blade stiffeners increased the strength, stiffness and reduced the out-of plane displacement at failure. The failure of both the unstiffened and stiffened panels was through local buckling rather than through material failure. DIC was able to capture the strain localization and buckling failure modes.

Citation Download Citation

Pradeep Kankeri, P. K. Ganesh Mahidhar, S. Suriya Prakash, and M. Ramji "Experimental study on behavior of GFRP stiffened panels under compression", Proc. SPIE 9302, International Conference on Experimental Mechanics 2014, 93021O (4 March 2015); https://doi.org/10.1117/12.2077093

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
6 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Composites

Failure analysis

Digital image correlation

Glasses

Oceanography

Strain analysis

Aerospace engineering

Show All Keywords

Keywords/Phrases

Search In:

Publication Years