Below is the portfolio of my work
The first attempt was a 1/4" drill bit with 4 cutter carbide tip It was made using a hollow 316 Stainless Steel shank and HSS SDS head. A 1/8" hole was drilled for suction
The drill was successfully tested on the robotic end-effector as well
Rotary Percussive Vacuum Drill Bit
This was a major part of my Masters research done for the ANDERS project which involved rehabilitation of deteriorating bridges in the nation.
Minimal invasive drilling into bridge decks is needed to reach the locations where delamination (horizontal defects) initiates. Due to the percussive action while drilling it was noticed that the openings into these cracks get clogged and repair material cannot be delivered.
I designed and successfully tested a drill bit that could avoid this problem. It is different from the past attempts as it has four carbide cutters which gives better holes.
Check My Work
ANDERS End-Effector
Automated Non-Destructive Evaluation and Rehabilitation System (ANDERS) is a university-industry joint venture supported by NIST to revolutionize the manner in which the bridge decks are assessed, monitored and rehabilitated in a more quick, economic and effective way.
This system uses robotics and automation for precision and rapid delivery of alkali alumino-silicate matrices for non-destructive repair and rehabilitation of bridge decks.
My major contribution was the design of the end-effector and mechanical systems. The end-effector consists of a rotary hammer drill, a linear screwrail, valves and sensors which are required for autonomous delivery of the repair materials to the delaminations.
A core of bridge showing the delamination
Two different ways were used to mount the encoder. The first was using two stand-offs and screwing the encoder to it and second was using the four stand-off mounting screws and gluing the encoder to it. The second method was preferred as it was foolproof and did not depend on positional accuracy during mounting
Miscellaneous
Different small projects I worked on during extra time.
Designed and developed a self-contained Series Hybrid vehicle. Emphasis was given on drive train innovation which was designed to be a differential-free independent rear wheel drive.
First page of sponsorship brochure
Before the first test run
Designed and developed a self-contained Series Hybrid vehicle. Emphasis was given on drive train innovation which was designed to be a differential-free independent rear wheel drive.
Designed and developed a prototype of a rugged, single seat, off road recreational vehicle. The vehicle met with all the safety criteria, was easy maintained and fun to drive. It was able to negotiate rough terrain in all kind of weather without damage.
One of the tests
Designed and developed a prototype of a rugged, single seat, off road recreational vehicle. The vehicle met with all the safety criteria, was easy maintained and fun to drive. It was able to negotiate rough terrain in all kind of weather without damage.
Ananya- Formula Hybrid 2009
Pushpak-Mini Baja US West 2006
Surface CAD