Digital Image Correlation (DIC) based full field strain mapping methodology is used for mapping strain on an aluminum sample subjected to tensile deformation. The local strains on the surface of the specimen are calculated at different strain intervals. Early localization of strain is observed at a total strain of 0.050ɛ; itself, whereas a visually apparent localization of strain is observed at a total strain of 0.088ɛ;. Orientation of the line of fracture (12.0°) is very close to the orientation of locus of strain maxima (11.6°) computed from the strain mapping at 0.063ɛ itself. These results show the efficacy of the DIC based method to predict the location as well as the profile of the fracture, at an early stage.
It is important to monitor temperature in Aluminum Conductor Steel Reinforced (ACSR) overhead power cables and
also inspect for any cable defect. A stainless steel encased optical fiber sensor is incorporated in ACSR in place of steel
core. Defects are simulated in the ACSR and the temperature is monitored. The results demonstrate that Raman
Distributed Temperature Sensor (RDTS) is a promising technique for both temperature and defect monitoring in ACSR