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Laser forming is a flexible manufacturing process which has potential use in the manufacturing and automotive industry. In this process, a high power laser scans the metal sheet across its length. The metal sheet absorbs the laser and a steep temperature gradient is generated across the sheet thickness. The induced uneven thermal stresses, and the resulting bending moments, during the process deform...
This research highly focuses towards development of a Shape Memory Alloy based micro valve and actuation using LASER. Numerous Micro valve designs have been reported with a variety of actuation mechanisms such as piezoelectric, silicon rubber, etc. [1], but the use of these micro valves have been limited. Here LASER is used as actuation medium because of noncontact type and low power energy density...
An application of a pulsed, solid-state laser with a Gaussian and flat-top beam profiles is considered for annealing and nano-texturing of amorphous-silicon (a-Si) films. Investigations are performed with the third harmonics (355 nm) Nd3+:YAG laser. To crystallize and subsequently induce texture, a-Si films are treated by spatial-overlapping of the laser spots on the surface by 90% of its size. The...
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