CONFERENCE PROCEEDINGS
Advanced Search
Home > Proceedings > Volume 10972 > Article
Presentation
1 April 2019 Measuring axial stress in thick structures using highly nonlinear solitary waves (Conference Presentation)
Amir Nasrollahi, Piervincenzo Rizzo
Author Affiliations +
Proceedings Volume 10972, Health Monitoring of Structural and Biological Systems XIII; 109721E (2019) https://doi.org/10.1117/12.2514059
Event: SPIE Smart Structures + Nondestructive Evaluation, 2019, Denver, Colorado, United States
Abstract
This article presents a nondestructive evaluation (NDE) method to infer the axial stress in thick beams with the aim to extent the methodology to continuous welded rails. The method relies on the propagation of highly nonlinear solitary waves generated at one end of a chain of spherical particles in contact with the beam to be evaluated. The opposite end of the chain is in contact with the beam to be evaluated. Here the waves are reflected back to chain and the hypothesis is that the axial stress influences the amplitude and speed of the reflected waves. To verify this hypothesis a general finite element model of thermally stressed beams was developed and coupled to a discrete particle model able to predict the propagation of the waves along a L-shaped granular medium. The models were validated experimentally. The hypothesis was proven valid by both the numerical and the experimental results. In the future, these findings may be used to refine a NDE method to assess stress in columns, to infer the neutral temperature of continuous welded rails, and to prevent thermal buckling of critical structures.
Conference Presentation
© (2019) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation Download Citation
Amir Nasrollahi and Piervincenzo Rizzo "Measuring axial stress in thick structures using highly nonlinear solitary waves (Conference Presentation)", Proc. SPIE 10972, Health Monitoring of Structural and Biological Systems XIII, 109721E (1 April 2019); https://doi.org/10.1117/12.2514059
ACCESS THE FULL ARTICLE
ORGANIZATIONAL
Sign in with credentials provided by your organization.
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
 PRESENTATION
WATCH
PRESENTATION SAVE TO MY LIBRARY
GET CITATION
Advertisement
Advertisement
KEYWORDS
Nondestructive evaluation
Particles
Wave propagation
Beam propagation method
Finite element methods
Spherical lenses
Thermal modeling
RELATED CONTENT
Subscribe to Digital Library
Receive Erratum Email Alert
Back to Top