Finite element modeling of pulse phase thermography of an approximate model of low velocity impact induced damage in carbon fiber reinforced polymer structures

Saul Hernandez Valle; Kara Peters

doi:10.1117/12.2513434

13 May 2019 Finite element modeling of pulse phase thermography of an approximate model of low velocity impact induced damage in carbon fiber reinforced polymer structures

Saul Hernandez Valle, Kara Peters

Author Affiliations +

Proceedings Volume 10990, Computational Imaging IV; 109900S (2019) https://doi.org/10.1117/12.2513434
Event: SPIE Defense + Commercial Sensing, 2019, Baltimore, MD, United States

Abstract

In this work, we apply the finite element (FE) method to simulate an approximate low velocity impact induced model. One important characteristic of low velocity impact damage is the presence of multiple defects located at different depths, creating overshadowing among each other, affecting the thermal diffusion and therefore the blind frequency and temperature distribution on the surface, understanding this phenomenon is paramount in order to quantify the magnitude of under-the-surface damages. In this paper, we create a representative geometry of a defect using the meshing code CUBIT and solve the finite element model in ARIA thermal code in order to simulate the phase component of reflected thermal waves. The phase and thermal data collected from the FE solution on the surface above each defect is post processed and linearly correlated, in conjunction with a two-point strategy to provide information about the defect below the surface of interest. We also present a comparison with a single defect representation of the defect, proving that single model defect is not accurate to represent damage created by low velocity impact.

Citation Download Citation

Saul Hernandez Valle and Kara Peters "Finite element modeling of pulse phase thermography of an approximate model of low velocity impact induced damage in carbon fiber reinforced polymer structures", Proc. SPIE 10990, Computational Imaging IV, 109900S (13 May 2019); https://doi.org/10.1117/12.2513434

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