Study of damage of t-joint components by using different non-destructive techniques

D. Palumbo; R. De Finis; A. Saponaro; R. Nobile; F. Panella; U. Galietti

doi:10.1117/12.2558594

23 April 2020 Study of damage of t-joint components by using different non-destructive techniques

D. Palumbo, R. De Finis, A. Saponaro, R. Nobile, F. Panella, U. Galietti

Proceedings Volume 11409, Thermosense: Thermal Infrared Applications XLII; 114090F (2020) https://doi.org/10.1117/12.2558594
Event: SPIE Defense + Commercial Sensing, 2020, Online Only

Abstract

The present research is focused on the use of different non-destructive techniques for detecting damage in CFRP composite structures obtained by an innovative technological process: Automated Fiber Placement. The component was a T-joint stringer adhesively bonded to a skin panel. The aim of the present work is to show the capability of these techniques to provide complementary information for detecting the damage in composites. Automated Fibre Placement consists in an automatic deposing of prepeg or dry plies on a specific mould. The innovation lies in the possibility to reduce the time of the manufacturing process of large and complex structures by using a robotic arm that contemporary deposes fibre tows and pre-polymerizes them. The resulting products present higher quality in terms of surface finish, internal flaws absent and higher mechanical properties. The T-joint component tested in the present research was addressed to both static and cyclic tests. After the damage was induced in the material it was performed a qualitative and quantitative study of the damage by using different nondestructive techniques: Thermoelastic stress analysis (TSA), Ultrasound tests (UT) and displacement/strain measurements provided by strain gages. Processing and post-processing procedures were developed to analyze the data from each tests and finally the comparison of the results allowed a complete characterization and an overview of damage in the component by observing specifically where and when it occurred and how many regions of the component were interested. Finally, dimension, shape and depth where assessed.

Conference Presentation

Citation Download Citation

D. Palumbo, R. De Finis, A. Saponaro, R. Nobile, F. Panella, and U. Galietti "Study of damage of t-joint components by using different non-destructive techniques", Proc. SPIE 11409, Thermosense: Thermal Infrared Applications XLII, 114090F (23 April 2020); https://doi.org/10.1117/12.2558594

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