ICNDME 2014 - International Conference

Experimental Investigation on the effects of helically arranged Unconstrained Layer Elastomer Layered Treatment over Structural Steel Beams of Various Cross-section for improved Free Vibration Characteristics

The objective of this work is to determine and analyze the effects of helically arranged unconstrained layer with visco-elastomer patches over steel beams of different cross-section for improved free vibration characteristics.
Skills Gained:
1)ME Scope® and RT Pro® softwares were used for real time vibration analysis of beams
2)Deeper understanding of the field of Vibration
3)Technical Paper writing

Publication link:

http://www.ijtre.com/special_issue_manuscript/ICNDME_14229.pdf

Jounal: Intern

The valedictory function! 

Kabadiwalla Connect!

A mobile app to help find your nearest scrap dealer

CHENNAI: In a bid to make source segregation of waste easier for households, a group of youngsters plans to create an app that shows the kabadiwallas, or scrap dealers, present in various parts of the city. Residents can then use the app to find a scrap dealer in their area who would visit their house and pick up recyclable waste. 

Kabadiwallas traditionally visit houses to buy recyclable waste like paper, plastic bags, plastic bottles, glass bottles, thermocol boards and cardboard boxes. "Kabadiwallas have been in the business for generations, so they know how to pick out items that can be reused, including electronic and metallic waste," says Siddharth Hande, from Global Shapers Community, which will launch the mobile app along with Sri Venkateshwara College of Engineering's eco-club. 

However, many households, especially those with non-Tamilians who've recently moved to the city, neither know the existence of these kabadiwallas nor ways to contact them. "The kabadiwallas usually ride their bicycles along the road shouting 'paper,' 'bottle' or 'clothes' to announce their arrival. Those new to the city don't know that it's the scrap dealer's call," says Hande. 

The app will initially be available only on the Android platform. Hande explains that the app will zero-in on the resident's current location through GPS or mobile SIM tracking and then display the kabadiwallas nearest to the resident. When you click on a particular scrap dealer, it will also list details like the shop's address, contact number, the types of waste the dealer buys and the price per kg that he pays for it. 

Around 14 members from Global Shapers Community and 400 students from Sri Venkateswara College of Engineering will go to 40 parts of the city and identify the kabadiwallas in each area, take their picture and note down other details like their address and number so that it can be uploaded on the app. Hande expects this mapping to be completed by the end of February. 

The mappers hope that this exercise will also make Corporation of Chennai realise that there is a sizeable scrap dealer community in the city and show that recognising them and including them in our solid waste management system will be beneficial. "They are almost invisible or non-existent in the corporation's eyes right now. They're often even looked as miscreants," says V Srinivasan, an activist who recently took up the cause of ragpickers. They also collect recyclables from garbage bins and sell them for a living. 

We did this project and enjoyed the overall experience of interacting with the scrap dealer community.We found their locations and updated their details in the mobile app!

-Agarshna Murari M

Car sketching workshop

                 Sketch it workshop, Shastra, IIT Madras ,2014

Learnt the basics of automobile sketching from lead designer from DC(Dilip Chabria), Pvt.Ltd.He was the lead designer for the facelift models of Renault "Pulse" and Nissan "Micra".

My pic with the designer! :)

My sketching and the certificate!

Application of Nanotechnology in Automobiles

Application of Nanotechnology 

in Automobiles

What is Nanotech?

Nanotechnology – Art and science of manipulating atoms and molecules to create new systems, materials, and devices. 

How Big is a Nano? 

Nano = 10,000 times smaller than that of a human hair!

Goals for application of nanotechnology: 

• Environment - 1)Hydrogen and Fuel cells                                                            2)Catalysts                                                                                     3)Resource Efficiency
• Safety -           1)Active Safety                                                                             2)Passive Safety                                                                           3)Easy to Clean
• Comfort -        1)Passenger Wellness                                                                   2)Product attractiveness and easy care      

                               

Possible future applications:

•Gecko effect in car body 

•Switchable materials(Rheology) 

•Super Caps 

Nanotechnology for

•Car body and Corrosion protection 

•Improving fuel injection 

•Reduction in exhaust emission 

Car body:-

Nano Steel:

Embedded nano particles of metallic carbon nitride can effectively increase the strength of steel. 

•High strength to take care of the high intensity impact during crash. 

•Light weight would also lead to reduced fuel consumption and thus economy in operation. 

Nano Steel--->> ”INFINITE STRENGTH”

Nano Steel is a leader in nano-structured steel materials design, 

delivering new classes of steel to address complex modern 

challenges that steel remains best positioned to solve. 

“GM Ventures investment in NanoSteel demonstrates 

its confidence in our company’s potential to achieve 

widespread impact on the auto industry through our 

proprietary steel designs,” said Dave Paratore, president and 

CEO of NanoSteel. 

Corrosion Protection:-

SiO2 Nano Particles: 

By the use of nanotechnologies it has been made possible to 

enhance protection by the use of SiO2 nanoparticles, while widely used Chrome III (Cr3+) does not offer long term protection . 

•In contrast to Chrome-VI, Chrome–III (chemically:Cr3+) does not

have “long-term protection”. 

•The passivation achieved through galvanization processes consists of a Cr3+ enriched layer and a layer containing SiO2 nanoparticles in a Cr3+ matrix. 

•Nano passivation is suited for zinc and zinc-iron layers. The layer thickness is approximately 400 nm.

Corrosion protection and self-healing of the surface. If the zinc 

layer is exposed due to damage, the SiO2 particles migrate to 

the damaged location and cover it successfully for parts of 

chassis,brakes and doors. 

Fuel injection:-

Piezo injector:

•Piezo-ceramic materials allow realizing higher forces and speeds in comparison to conventional actuators for fuel injection. 

•Nano crystalline piezoelectric materials are used (Lead-Zirkone Titanate) in injectors. 

Piezo injectors enable several finely dosed injections per combustion cycle in powerful diesel engines at 1600 bar 

injection pressure.
"Delphi's new gasoline direct injection technologies have been designed to cut cost and high precision".(image below)

Exhaust Emission:-

Catalyst reducer:

•The impact of catalysts generally depends on the size of the surface, Nanotechnology plays crucial role here. 

•High-grade steel housings that include catalytically active materials used for the conversion of pollutants to nitrogen, steam and carbon 

dioxide. 

Arrow mark shows Pt nano particles(measured by STM)

Conclusion:

The smaller, quicker and highly productive are trademarks that are becoming strategically important for international

competitiveness.Thus, nanotechnology has a significant impact 

in the nature of materials making it a decisive advantage for the automobile industry. 

By,

Agarshna Murari

Ashwin Nambi