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 91
- Downloads 0
Design And Motion Planning of Two Module Indoor Pipeline Robot
This paper deals with a design and motion planning algorithm of a pipeline robot that can be used for inspection of 80–100 mm pipelines in an indoor pipeline environment. The robot system uses a four dc motor to drive an...
Analysis of Bandwidth Recycling in IEEE 802.16 Network Using PSA, RB-RFA & HSA
IEEE 802.16 network protocol is designed to provide a Worldwide Interoperability for Microwave Access (WiMAX). Due to limited bandwidth and an expensive radio spectrum available for communication, it is necessary to use...
Efficient Appraisal of Cloud Computing Through Comprehensive Confrontation of Security Issues and Discrepancies Involved
Cloud computing is a new computational paradigm that an innovative business model allows organizations to adopt without prior IT investments well. Despite the potential benefits derived from the cloud computing,...
Potential of Hydro Power Plant in India and its Impact on Environment
This paper presents a survey report of hydro power plant in India. There are various renewable energy resources like sun, wind, water, ocean, tidal etc. Among all the source, hydro plant are emerging in the developing In...
Improvement in the reduction of PAPR for various M-Ary Phase modulations in MIMO-OFDM systems using Orthogonal variable spreading factor (OVSF)
Orthogonal Frequency Division Multiplexing (OFDM) is regarded as one of the most eminent multicarrier modulation technique in fourth generation (4g) wireless networks, thus making it possible to transfer very high...