Share Email Print
cover

Proceedings Paper

Finite element analysis of thermal residual stress and temperature changes in cartilage during laser radiation
Author(s): Yongseok Chae; Sergio H. Diaz-Valdes; Enrique J. Lavernia; Brian Jet-Fei Wong
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

In this study, the rheological and phase behavior of porcine nasal cartilage were determined using dynamic mechanical thermal analysis (DMTA), differential scanning calorimetry, and thermogravimetric analysis and the principles of thermal analysis (TA). The results were then incorporated in a finite element analysis used to estimate thermal residual stress and temperature distributions during laser irradiation. The finite element analysis was conducted by using a commercially available code ABAQUS (Hibbitt, Karlsson & Sorensen, Inc, USA) to solve the fully coupled thermo-mechanical equations. Arrhenius kinetics were used to obtain the activation energy associated with the phase transition as determined using DMTA and the results were compared with the energy of the phase transformation calculated using DSC. Laser-induced stress relaxation produced an increase in the von Mises stress within the simulation. The values generated during photo thermal heating were calculated assuming cartilage as an isotropic linear visoelastic material. The advantages and limitations of this approach technique are discussed, in particular with relevance to optimizing this procedure for use in clinical settings.

Paper Details

Date Published: 9 July 2001
PDF: 14 pages
Proc. SPIE 4257, Laser-Tissue Interaction XII: Photochemical, Photothermal, and Photomechanical, (9 July 2001); doi: 10.1117/12.434709
Show Author Affiliations
Yongseok Chae, Beckman Laser Institute and Medical Clinic and Univ. of California/Irvine (United States)
Sergio H. Diaz-Valdes, Beckman Laser Institute and Medical Clinic and Univ. of California/Irvine (United States)
Enrique J. Lavernia, Univ. of California/Irvine (United States)
Brian Jet-Fei Wong, Beckman Laser Institute and Medical Clinic (USA) and Univ. of California/Irvine (United States)


Published in SPIE Proceedings Vol. 4257:
Laser-Tissue Interaction XII: Photochemical, Photothermal, and Photomechanical
Donald Dean Duncan; Peter C. Johnson; Donald Dean Duncan; Steven L. Jacques; Peter C. Johnson, Editor(s)

© SPIE. Terms of Use
Back to Top