Numerical Analysis of Defects in FML using Through-Transmission Mode of Active Thermography
Journal Title: INTERNATIONAL JOURNAL OF ENGINEERING TRENDS AND TECHNOLOGY - Year 2012, Vol 3, Issue 3
Abstract
The study mainly focuses to investigate the thermal response of defects such as delaminations and disbonds, and develop mathematical models using numerical results to obtain the optimum heat requirement and time to identify defects in GLARE type of Fibre metal laminates (FML) under a throughtransmission (TT) mode of step pulsed active thermography (SPAT) method in the type of nondestructive testing and evaluation (NDTE) technique. The influence of applied heat flux and time on various sizes and depth of defects in FML is analysed to investigate the thermal response through numerical simulations. A finite element method (FEM) is applied to simulate SPAT through ANSYS software based on 3D transient heat transfer principle with the assumption of TT mode of observation. The investigation shows that the smaller and near-surface defects located at the thermal stimulant side respond with reduced thermal contrast and vice versa. Numerical results are analysed to provide the optimum heat requirement and time to identify defects at the required MRTD even to identify defects which are not identified within the load conditions considered for the investigations. Further, a comparative study concludes that the numerical approach based on SPAT using TT mode of observation could be utilized to derive mathematical models using numerical results to analyse defects present in FML effectively.
Authors and Affiliations
S. Sundaravalli#1 , M. C. Majumder2 , G. K. Vijayaraghavan3
Keywords
Related Articles
- EP ID EP151304
- DOI -
- Views 107
- Downloads 0
Histogram Shifting Based Reversible Data Hiding
This paper presents a reversible data hiding scheme based on histogram modification. Distribution of pixel difference is used to achieve high hiding capacity. In order to solve the issue of communicating the multiple pea...
Improving Predictability by Blending VSM with KANBAN
Value flows in every process, and early days was of focusing on Value Addition at every such intermediate stage of process. However, with evolution of KANBAN, JIT under the umbrella of the Toyota Manufacturing System (TM...
A Hybrid Modified Semantic Matching Algorithm Based on Instances Detection With Case Study on Renewable Energy
This Matching input keywords with historical or information domain is an important point in modern computations in order to find the best match information domain for specific input queries. Matching algorithms represent...
Various Packet Size on Different MANET Routing Protocols
Mobile ad-hoc networks (MANET’S) are autonomously self-organized networks without infrastructure support. Each device in a MANET is free to move independently in any direction, and will therefore change its links t...
CFD analysis of solar air heater duct with rectangular rib surface
This paper presents the study of heat transfer in a rectangular duct of a solar air heater having Rectangular rib with roughness on the absorber plate surface by using Computational Fluid Dynamics (CFD) and the eff...