Igcar Develops Sensors to Inspect Defects in Materials

Igcar  develops sensors to inspect defects in materials

Defecting and imaging structural defects like cracks holes etc. present in components made of ferromagnetic materials like pipelines, ailway tracks and tubes has now become easy with optical sensors these sensors were developed by Dr. John philp and his team at the indira Gandhi centre for at

ATMOC  research kalpakkam near Chennai.  The optical sensor has oil droplets (about 200 nano-metres in diameter) containing a few nano particles of magnetic materials about 6.5 nanometers in size. The ol droplets are present as an emulsion with water. Since the sensor contains magnetic particles, it responds to magnetic felds.

The sensor works on the principle that defective regions in a material produce magnetic resistace, and this in turn leads to leakage of magnetic flux (field lines).

The sensor works on the principle that defective regions in a material produce magnetic resistance, and this in turn leads to leakage of magnetic flux (field lines)

The nanofluid-based optical sensor can detect such leakages.