Dec 192018

UROP GRANT PROPOSAL 

With an increasing competition, there is a need for faster innovation and a reduced time-to-market cycles in the development of manufactured products. Such pressure increases the risk for failures to be embedded in the design. Currently, there is a lack of support to assess such risk in early stages of design and decision-making. Normally, risk analysis is carried out at later stages, where the possibility of design changes is very limited. Therefore there is a need for the integration of assessing the risk of failure at an early conceptual design phase [1, 2]. This early analysis will enable designers to explore more innovative solutions that are less likely to fail, leading to products that will be more robust and last longer. 

This analysis of potential failures at an early stage can be conducted in numerous ways – computer simulation and physical experiments – where different scenarios of use for a new product can be reproduced and tested [3]. However, both these techniques have their setbacks.  Computer simulation at early stages lacks precision, whereas physical experiments can be too expensive and time consuming to conduct. 

A more systematic integration of failure analysis in the design process has been proposed by different methods. Failure Mode & Effects Analysis (FMEA) is an important example of a methodology for more rigorous identification and management of multiple failure scenarios during the entire life span of a product [4, 5]. Within the general framework of FMEA, we are interested in the combination of computer simulation and experiments with physical prototypes to overcome the limitations of these approaches when tackled separately during early design.   

To test our hypothesis, we focus on the design of fasteners used for the attachment of photovoltaic (PV) modules in large scale solar energy installations. This case study allows us to model and analyse different sets of possible failure modes associated with lifecycle requirements of PV systems. In particular, this research will explore the interactions of different loading conditions including, structural loads, metal fatigue, heat transfer, and electrical conductance, as defined by relevant industry standards (e.g. UL 2703). For that purpose, the development of prototype testing device is envisioned as the main objective of this research, with the goal of testing different combinations of such loading conditions under the FMEA theoretical framework. 

This task is considered part of a larger interdisciplinary research project currently carried out between the schools of Architecture, Civil and Environmental Engineering and the Aerospace and Mechanical Engineering at OU, under the direction of Professors Cavieres and Siddique, in association with industry partners. In this context, this research proposal is expected to contribute to the development of a more general framework to support the design decisions at early stages of product development. 

Based on the understanding from these experimental and simulation work, we expect to publish our methodology in Advanced Clean Energy Summit from September 15th to 19th, 2019 organized by Association of Mechanical Engineers.  

References 

[1]W. J. Fabrycky and B. S. Blanchard, Life-cycle cost and economic analysis. Prentice Hall, 1991. 

[2]L. Wang, W. Shen, H. Xie, J. Neelamkavil, and A. Pardasani, “Collaborative conceptual design—state of the art and future trends,” Computer-Aided Design, vol. 34, no. 13, pp. 981-996, 2002. 

[3]D. Yang, Z. Yuan, P. Lee, and H. Yin, “Simulation and experimental validation of heat transfer in a novel hybrid solar panel,” International Journal of Heat and Mass Transfer, vol. 55, no. 4, pp. 1076-1082, 2012. 

[4]M. Rausand and K. Øien, “The basic concepts of failure analysis,” Reliability Engineering & System Safety, vol. 53, no. 1, pp. 73-83, 1996. 

[5]T. Stålhane, “FMEA, HAZID, and ontologies,” in Ontology Modeling in Physical Asset Integrity Management: Springer, 2015, pp. 45-85. 

 

 

Sep 182018

Rhodes Scholarship India Finalist Essay

My life experiences have taught me that living or working only to sustain myself is perfect way to be miserable. This is why I want to shape myself a future, where I am focused on serving the less privileged and supporting the future generations to come. This is why I want to be a professor for three reasons as all of these interest me equally – to support and mentor students, to develop cutting edge technology and build new knowledge, and to be involved in service based activities. My education at Oxford will be a stepping stone towards developing a personality capable of performing the above mentioned duties by intellectually challenging me, and expanding my critical thinking and reasoning abilities.  

I feel strongly about supporting the less privileged. To serve them, since I got my first job as a freshman, I have been spending 10% of my income to serve them. Soon, I formed an organization called “Money Spent Right (MSR)” to encourage and motivate the idea of saving a percentage of one’s income and spending it on the less fortunate. I have posted my stories and those of others to the website – www.moneyspentright.oucreate.com/stories. MSR has also helped me realize that I have a heart for service, to be appreciative and unselfish for what I possess, and to be conscious of how I can help others. At Oxford, I would find an incredible diversity that would further my reach for this cause. I can also do so by collaborating with some of the focused Rhodes Scholars Group, as they themselves are trying to leave a positive impact in the world. 

Apr 192018

Project for Peace Proposal

Problem Overview:

India – the country of 1.2 billion people, where approximately half of the population is women and  355 million of them are menstruating, 88% of these women and girls use homemade alternatives such as an old cloth, rags, hay, sand or ash as their sanitary pads during their menstrual cycle. This problem could be solved if this was just due to lack of limited resources, but it is also due to the lack of awareness about the available products and the social stigma attached to the sanitary napkins. When Pranav’s sister went through her menarche, her first reaction was, “I have cancer.” When a girl child experiences menarche and communicates it to the mother, mum’s first reaction decides a child’s lifelong mind-set about menstruation. Mothers and grandmothers are tied by the society and the society has tied the older generation with numerous taboos, for example, during menstruation, girls cannot visit temples, cook food, enter kitchen, play outside, sleep next to family members, etc.

Feb 082018

Outstanding Junior

For me, to be even writing this essay is a privilege that I never thought of getting while growing up. In a small town in India, my family was close to destitution when my father stopped providing any kind of funds to support his home-maker wife and the four children. Our dinner would be cooked with the money that my mum brought home after a long day of work.

That was a day, and then there is today. I am sitting on a comfortable chair in a country foreign to me with a MacBook – writing in English proficiently under a 24-hour running air-conditioner. What I have received is still a dream for numerous children around the world and this is the gap I want to address in my near future. Our family would have never come out of poverty, if there was no third-party influence. This taught me not to take what I get for granted; therefore, I am on a mission to change the world where DREAMS become a REALITY, whether it is through engineering, research or education. The only profession that enables me to combine all of these is a professorship.

Aug 022017

1.      Frame of reference

Previous three industrial revolutions happened due to the introduction of radical ideas, let it be, mechanics electricity or an introduction of the programmable logic[1]. The instigators of these revolutions have now become foundational to the numerous manufacturing processes. Similarly, in the recent times, Internet and advanced computational processes are becoming the upcoming platforms to expand the concurrent manufacturing sector. With such evidence of change in the current scenario and the exponential rate of acceptance in the industry, fourth industrial revolution is bound to take place in the next 20-30 years [1].

Current scenarios focus solely on the product development. However, it’s not just about the end-product anymore. As the US economy is moving towards becoming a service economy, the products need to be designed placing the customers at the pedestal. This is further amplified due to an ever-high level of competition between firms. For this purpose, an inverse goal-oriented decision based design (IGODBD) method is proposed to facilitate the movement from the design to the manufacturing unit quickly[2]. Another condition that will enable the manufacturing company to become a global leader will be how sustainable the processes involved are. Keeping these two in mind, the goal will be on innovation to provide a maximum utility to maximum customers. In the age of globalisation and interconnections between countries, the manufacturing company will also be required to reach other countries, either for personal technological advancements from other developed nations or to help create a technological revolution in other developing nations. Various research obstacles and mind-set changes will be required to make the manufacturing enterprise a global leader by 2030, which will be explained in detail in their corresponding sections. As displayed in Figure 1, our focus in on changing the manufacturing process instead of bringing new ideas or modifying the product. This is the challenge that how do we continue to satisfy our wants in the way we already are but in a more sustainable way.

Apr 102017

IIT Kanpur Internship Letter – Winning Letter

Dear Professor Amarendra Singh:

I am keen to undertake a self-funded 8-week research internship this summer with you at IITK. I am a mechanical engineering sophomore studying in the University of Oklahoma (OU). Last semester, I came to know Professors Janet K. Allen and Farrokh Mistree and this semester I am working with their PhD candidate, Anand Balu Nellippallil.

Currently, I am working with Anand on a hot rod rolling process chain problem. We realise that interdependent design decision must be made at every stage of the steel manufacturing process chain. These design decisions and the information generated need to be communicated between different stages. We are developing an inverse goal-oriented method for the hot rod rolling and studying the theoretical models available in literature for different kinds of recrystallizations and grain growth to predict the austenite grain size after rolling. We are aiming to publish a paper on our findings by the end of the summer this year. At the same time, I will be applying for the NSF/ASME student essay competition – 2017, oriented towards characteristics of a high tech global design and manufacturing company and the research challenges it will face in 2030. This especially fits in with the context of the recent collaboration between IITK and TCS. I believe by visiting IITK, I will be exposed to your two areas of research – computation metallurgy and sustainable manufacturing – both field I feel passionate about.

Feb 012017

Outstanding Sophomore Essay – Winning Essay

For me, to be even writing this essay is a privilege that I never thought of getting while growing up. In a small town in India, my family was close to destitution when my father stopped providing any kind of funds to support his home-maker wife and the four children. Growing up with retired maternal grandparents, the dinner would be cooked with the money that my mum would bring at the end of her long working hours.

That was a day in the past, and then there is today. I am sitting on a comfortable chair in a foreign country with a MacBook being able to write English proficiently under a 24-hour running air-conditioner. What I have received is still a dream for numerous children around the world.

Aug 212016

For me, to be even writing this essay is a privilege that I never thought of getting while growing up. In a small town in India, my family was close to destitution when my father stopped providing any kind of funds to support his home-maker wife and the four children. Growing up with retired maternal grandparents, the dinner would be cooked with the money that my mum would bring at the end of her long working hours.

That was a day and there is today. I am sitting on a comfortable chair in a foreign country with a MacBook being able to write English proficiently under a 24-hour running air-conditioner. What I have received is still a dream for numerous children around the world.

Our family would have never come out of poverty, if there was no third-party influence. This taught me to not take what I get for granted and, therefore, I am on a mission to change the world where dreams become a reality.

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