• Koteswara Rao Unnam

Active repair of structures using piezoelectric sensors and actuators have been received much attention of the researchers in the recent past. The key objective of the active repair is to induce stresses or strains in opposite direction to the externally applied load and thus control the singularity of the stress or strain near the crack front when the external voltage applied. In the present work, active repair of aluminum plate with an inclined central crack under uniaxial load is considered. The effect of crack orientation and, the adhesive thickness on the repair voltage is studied. From the results, it is concluded that thicker adhesive will require higher repair voltage to bring down the stress intensity around the crack tip less than the threshold stress intensity values. The crack length is also having the same kind of influence on the repair voltage.

Active repair, Piezoelectric patch, stress intensity factors, repair voltage

"Numerical analysis and performance studies of active repair of cracked aluminum panel using piezoelectric Patches", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 1, page no.388-395, January-2019, Available :http://www.jetir.org/papers/JETIR1901B50.pdf

"Numerical analysis and performance studies of active repair of cracked aluminum panel using piezoelectric Patches", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 1, page no. pp388-395, January-2019, Available at : http://www.jetir.org/papers/JETIR1901B50.pdf