In the era of scientific advancement, Prof. G S Vinod Kumar, HoD and his Research Scholar, Dipak Nandkumar Bhosale, from the Department of Mechanical Engineering at SRM University-AP, shine as a beacon of inspiration. The teacher-student duo were granted a patent for their research titled “Closed Cell Magnesium Alloy Foams Stabilized by Fly Ash Particles and A Method for Preparation for the Same.” This patent stands as a testament to their relentless pursuit and unwavering commitment to science.

Kudos to Prof. G S Vinod Kumar and Mr Dipak Nandkumar Bhosale for their exemplary dedication and foresight. Here’s an abstract of their patent-winning research.

Abstract:

A magnesium metal foam product enhanced with fly ash particles demonstrates versatility across multiple applications, including space, automotive, civil engineering, and marine uses. The stability of this magnesium alloy foam is attributed to the incorporation of fly ash particles, particularly alumina silicate (Al2SiO5) cenospheres. These cenospheres, hollow spheres derived from fly ash, serve as effective stabilisers for the magnesium alloy foam. The preparation involves reinforcing magnesium foamable precursors with fly ash particles, facilitating optimal foaming. The presence of fly ash particles ensures the stability of the liquid foam until solidification, resulting in a foam with a superior pore structure. With a contact angle ranging between 70° to 90°, the particles exhibit prolonged interaction with the liquid metal without agglomeration, dissolution, or reaction. This characteristic contributes to the attainment of desirable qualities essential for diverse applications.

Practical Application:

1. Aerospace: Magnesium foams can be used in lightweight structural components, thermal insulation, and vibration-damping systems in aerospace applications.

2. Automotive: In the automotive industry, magnesium foams find applications in lightweight body panels, crash absorbers, and acoustic insulation.

3. Biomedical: Due to their biocompatibility, magnesium foams are utilised in medical implants, such as bone fixation plates, and as scaffolds for tissue engineering.

4. Energy: These foams can be employed in thermal management systems, heat exchangers, and as structural components in renewable energy systems.

5. Sports and Leisure: Magnesium foams can be used in sports equipment such as helmets, pads, and protective gear due to their lightweight and impact-absorbing properties.

Patent Grant Number: 50830

SRM University-AP shares a momentous achievement as the Mechanical Engineering department has been awarded a financial grant of Rs 1.4 crores under the prestigious FIST (Fund for Improvement of S&T Infrastructure) by DST (Department of Science and Technology) Government of India.

The equipment proposed under the FIST grant is High-Resolution X-ray Micro Computed Tomographic Scanner that will help Materials Scientists, Engineers, Manufacturers and Researchers investigate internal structures, pore flaws of metallic, polymer and ceramic samples/ components non-destructively. This state-of-the-art facility will promote R&D activities in new and emerging areas of Materials Science Engineering and Manufacturing. Additionally, it seeks to attract fresh talents to the university, fostering an environment of innovation and scientific excellence. The established facility will be available to internal and external users (from academic institutions, research labs, manufacturing Industries, MSMEs and Startups.

The grant, awarded for a duration of 5 years, is a testament to the unwavering commitment of SRM University-AP to providing cutting-edge resources for the advancement of scientific studies. This achievement results from the exceptional efforts put forth by the faculty members of the Department of Mechanical Engineering of the university. Their dedication, expertise, and commitment to academics and research played a pivotal role in securing this grant amidst tough competition.

Prof. Manoj K Arora, Vice Chancellor, SRM University-AP proudly remarked, “This grant will not only enhance our research capabilities but also provide a platform for our students and faculty members to explore new avenues in the field.” Prof. G S Vinod Kumar, Head of the Mechanical Department, expressed his delight that the grant will be utilised for advanced characterisation and diagnostic research in the area of Materials and Manufacturing. It will also be used to strengthen the postgraduate and doctoral research facilities in the mechanical engineering department.

The Institute applauds the Mechanical Engineering department for proving their mettle and emerging success among departments from various universities/institutes, both government-funded and private, in the national level competition for the DST-FIST grant. SRM University-AP is confident that this financial support will propel the Mechanical Engineering department to new heights of success and enable them to contribute significantly to the scientific community. The institution remains committed to fostering an environment that encourages research, innovation, and knowledge creation.

The Department of Mechanical Engineering is delighted to share that Dr Supen Kumar Sah, Assistant Professor, Department of Mechanical Engineering, has received the best paper award for his paper titled “Free Vibration Analysis of Functionally Graded Material Sandwich Plate Using Refined Shear Deformation Theory” in the 2nd International Conference on Modern Research in Aerospace Engineering (MRAE 2023). Dr Supen collaborated with Saloni Malviya of VIT, Bhopal, for the research paper. The paper explores the intricate dynamics of functionally graded material sandwich plates, employing a refined deformation theory. Dr Sah’s exceptional work has not only contributed to the scientific community but has also demonstrated his dedication and passion for advancing knowledge in the field of materials science and engineering.

Abstract

In the present study, free vibration analysis of a functionally graded material sandwich plate has been carried out using refined shear deformation theory. The shear correction factor is not needed since the parabolic variation of shear strain through the thickness is in such a way that shear stresses vanish on the plate surfaces. Hamilton’s principle is used for the derivation of the equation of motion for the theory. Additionally, Navier’s solution is used to obtain the eigenvalue equation for the sandwich plate. The three variants of sandwich plate are chosen for the analysis. To carry out the free vibration analysis three different types of FGM sandwich plate models namely 1-1-1, 1-2-1, and 2-2-1 have been considered. A power law defines the volume fraction index and the material properties of the individual layers of the sandwich plate. Lastly, the impact of parameters such as volume fraction, aspect ratio, and length-to-width ratio on frequency parameters is investigated.

Future Research Plans

• Modelling and Analysis of porous uni and multi-directional Functionally Graded Material (FGM) plates to obtain the impact of porosity distributions over structural responses.

• Analytical and finite Element Solutions for static and dynamic response of FGM sandwich plates employing non-polynomial shear deformation theories under elastic foundation.

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“If we start working today towards developing LTA systems, in 10 years India will lead the sustainable air transportation” esteemed academician, Prof. Rajkumar S Pant, Professor of Aerospace Engineering stated in his lecture at SRM University-AP. The seasoned expert from the prestigious institute of IIT Bombay delivered a lecture on “The Design and Development of Lighter Than Air Systems” at SRM university-AP on October 16, 2023, as part of the Distinguished Lecture Series 2023 organised by the Department of Mechanical Engineering. The lecture extensively discussed the latest developments in the area of conceptual design, sizing, design, development and flight/field testing of LTA Systems.

In his lecture, Prof. Pant encouraged students to explore the dynamics of Lighter Than Air Systems, beginning with aerostats and then gradually proceeding to more complex airships. The session highlighted the disaster of Hindenburg, breaking the myth that airship transportation is dangerous and unreliable. Prof. Pant engaged the session with video presentations on the building, developing and working of airships and aerostats that have been conducted at the Lighter-Than-Air Systems Laboratory of IIT Bombay. His lecture also showcased some of the research and development activities that have been carried out in the LTA Systems Laboratory of IIT Bombay including Project HERCARA, and other projects carried out in collaboration with ISRO and DRDO.

The distinguished lecture was followed by a workshop on “Sizing of Reusable Indoor Hot Air Balloon (RIHAB)”. The workshop provided the students with practical knowledge and hands-on experience on LTE systems and vehicles inducing research interest in the domain of aerospace engineering and sustainable air transportation. Prof. Ranjit Thapa, Dean – Research, Prof. Prakash Jadhav, Head – Department of Mechanical Engineering, faculty and students at the university actively participated in the lecture and the workshop.

The Department of Mechanical Engineering proudly congratulates G Chandra Mouli, PhD scholar for receiving the Best Oral Paper Presentation Award at the International Conference on Advances in Materials, Ceramics & Engineering Sciences (AMCES – 2023) organised by Dayananda Sagar University, Bangalore, held during March 13-15, 2023. The paper titled “A New Approach to Enhance Microhardness and Corrosion Resistance with In-Situ Shot-Peened Al – Zn Coatings on ZK60 Magnesium Alloy by Cold Spray” was awarded the first prize among the 200+ papers presented at the conclave.

Congratulations to G Chandra Mouli and his mentor, Prof, GS Vinodkumar, Professor, Department of Mechanical Engineering for their cutting-edge research in enhancing the thickness, microhardness and corrosion resistance of metals!

Abstract

This paper aims to develop an improved microhardness and corrosion protective coating (Pure Al-Zn, Al-Zn-Al2O3 and Shot peened Al-Zn) on an Mg alloy substrate, by using the cold spray (CS) technique. A mixture of metal, ceramic/hard particles (Al2O3) and Shot-peened (Large Ni particles) has been used to improve the feedstock powder flowability and coating deposition efficiency. The long-term corrosion properties are evaluated by immersing these coupons in NaCl solution as a function of immersion time durations. The coatings are well-characterised for their structural, morphological, mechanical and electrochemical properties. Thus, it has been observed that in-situ-shot peening helps to enhance the thickness, microhardness and corrosion resistance.