Abstract:
Active  InfraRed  Thermography  (IRT)  is  an  emerging  te
chnique  in  the  field  of  Non-Destructive  Testing  and 
Evaluation  (NDT&E).  In  recent  years,  pulse  compressi
on  supportive  techniques  and  associated  data  proces
sing 
schemes have been proposed by various research grou
ps to enhance the inspection capabilities of these 
techniques as 
well  as  to  make  the  experimentation  simple  and  more
  reliable.  This  paper  exploits  a  suitable  complemen
tary  coded 
excitation  for  thermal  NDT&E  along  with  the  associat
ed  pulse  compression  favorable  data  processing  sche
me.  The 
proposed  scheme  has  been  implemented  on  a  metallic 
sample  in  order  to  test  its  capabilities  for  subsur
face  defect 
detection and characterization.