Evaluating quality of adhesive joints in glass-fiber plastic piping by using active thermal NDT

M. Grosso; C. A. Marinho; D. A. Nesteruk; J. M. Rebello; S. D. Soares; V. P. Vavilov

doi:10.1117/12.2016762

22 May 2013 Evaluating quality of adhesive joints in glass-fiber plastic piping by using active thermal NDT

M. Grosso, C. A. Marinho, D. A. Nesteruk, J. M. Rebello, S. D. Soares, V. P. Vavilov

Proceedings Volume 8705, Thermosense: Thermal Infrared Applications XXXV; 87050T (2013) https://doi.org/10.1117/12.2016762
Event: SPIE Defense, Security, and Sensing, 2013, Baltimore, Maryland, United States

Abstract

GRP-type composites (Glass-fibre Reinforced Plastics) have been continuously employed in the oil industry in recent years, often on platforms, especially in pipes for water or oil under moderate temperatures. In this case, the pipes are usually connected through adhesive joints and, consequently, the detection of defects in these joints, as areas without adhesive or adhesive failure (disbonding), gains great importance. One-sided inspection on the joint surface (front side) is a challenging task because the material thickness easily exceeds 10 mm that is far beyond the limits of the capacity of thermography applied to GRP inspection, as confirmed by the experience. Detection limits have been evaluated both theoretically and experimentally as a function of outer wall thickness and defect lateral size. The 3D modeling was accomplished by using the ThermoCalc-6L software. The experimental unit consisted of a FLIR SC640 and NEC TH- 9100 IR imagers and some home-made heaters with the power from 1,5 to 30 kW. The results obtained by applying pulsed heating have demonstrated that the inspection efficiency is strongly dependent on the outer wall thickness with a value of about 8 mm being a detection limit.

Citation Download Citation

M. Grosso, C. A. Marinho, D. A. Nesteruk, J. M. Rebello, S. D. Soares, and V. P. Vavilov "Evaluating quality of adhesive joints in glass-fiber plastic piping by using active thermal NDT", Proc. SPIE 8705, Thermosense: Thermal Infrared Applications XXXV, 87050T (22 May 2013); https://doi.org/10.1117/12.2016762

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