bluuebunny/crossref_metadata_2025 huggingface dataset:
Influence of infill pattern and layer height on additively manufactured 17-4 PH/PLA composite
Authors: Mwema Fredrick , Wambua Job , Akinlabi Stephen , Jen Tien-Chien , Akinlabi Esther
Published: July 2024

Additive manufacturing or 3D printing of components is now becoming a very attractive method of producing models and parts in the medical, automotive, aerospace, and clothing industries, among many others. Despite the numerous advantages associated with 3D printing of components, the uptake of this technology is still in the early stages, owing to the limited research and data availability on the process, safety of components, and their integrity. Material extrusion 3D printing process is currently being investigated for manufacturing of metal composites and is one of the interesting subjects in fused deposition modelling. This study investigates the effect of infill pattern (lines, gyroid, cross, and lines) and layer height (0.15 mm, 0.1 mm, and 0.2 mm) on the dimensional deviation and mechanical properties of 3D printed 17-4 PH/PLA composites. The samples were produced through fused deposition modelling and evaluated for dimensional stability and tensile properties. In terms of dimensional accuracy, it is observed that for all samples, the width had the highest accuracy, followed by the height and finally the length. The largest width errors were observed for samples prepared at a layer height of 0.15 mm and gyroid infill patterns. The smallest width errors were observed on samples fabricated at a layer height of 0.2 mm and lines infill pattern. As expected, 3D printing at the lowest layer height of 0.1 mm resulted in the minimum dimensional error of the length of these samples. The lowest mechanical strength was reported at samples fabricated at an infill pattern of lines and layer heights of 0.1 mm and 0.2 mm.
Empowering rural south Odisha: A clean energy entrepreneurship approach for sustainable development
Authors: Sankar Das Shiv , Debadatta Behera Debashree , Chandra Mohanty Ramesh , Bijeta Nayak Bijaya , Kumar Patjoshi Pramod , Rath Adarsh
Published: July 2024

The current paper focuses on the process of developing clean energy entrepreneurs to facilitate the abundant adoption of clean energy products in rural areas of South Odisha, India. Southern part of the state of Odisha, is characterized by its rich cultural and ecological diversity significance, and it faces the challenges of energy access which subsequently leads to slowing down the socio-economic development of the region. Background: The present study focuses on developing a framework on the role of clean energy entrepreneurs in adoption of clean energy technology or the clean energy products and also further it also focuses on design and development of a solar operated Agri-pesticide sprayer. Method: A case study method is used to, identify the major barriers to clean energy adoption in the rural regions of South Odisha and also explore the different entrepreneurial steps undertaken to overcome the challenges. Moreover, the paper also focuses on the collaborating efforts between the local entrepreneurs, government agencies, and various non-profit organizations so as to create a supportive ecosystem for achieving sustainable development. Results: The findings of the study aims to inform policy makers, Government, etc. that there is a need to collaborate in order to adopt clean energy products so that it will help in paving a way for achieving sustainable development.
Kinetics of Stainless Steel Material by Plasma nitriding Process for sustainable applications
Authors: Kumar S.N.S. Santhosh , Venkatesh J. , Rahul V. , Gowthaman J. , Prasad D.V.S.S.S.V. , Navaneeth V.R. , Ram S.
Published: July 2024

Implantation of ion at low temperature and nitriding through plasma process at low-temperature prevents the corrosion resistance in stainless steel material. The outcome of nitriding process is to form precipitation of CrN on the surface. For the current research work, plasma nitriding techniques are adopted to nitride AISI 304 at low-temperatures at 5hrs, 10hrs, 15 hrs. The enriched layers are formed with combine nitrogen lead to increase in surface hardness. Austenitic and duplex steels produce expanded austenite on the material surface. Behavior of wear was monitored by pin on disc tester. The case depth were monitored and compared with a sample which is not treated. The morphology of surface were monitored and compared with the electron microscopic images. Finally hardness measurements were carried out with Rockwell hardness tester.
Sustainable solid-state method of synthesis, characterisation, and photoluminescence studies of Yb3+/Ho3+ doped YPO4 nanomaterials
Authors: Bandi Sirisha , Kanuparthy Phani Raja , Putta Venkata Nagendra Kumar , Kumar Kusuma Ashok , Bhupatiraju Saroja Rani
Published: July 2024

To encourage the production of [PO4]3- groups, a group of up-converting …down-converting YPO4 Yttrium phosphate compounds were synthesized using the solid-state technique in a basic environment. The noble pureness of the doped matrix was confirmed by the structural studies and Rietveld analysis, whereas growth in the part of the YPO4: Yb, Ho structures was discovered with a higher dopant concentration. The phosphates group, along with the ions Yb3+ and Ho3+, allowed for the UC…DC luminescence. While we observe up-conversion luminescence with colour under the 980 nm continuous movement of wave laser irradiation had been set on the way to the red area, the powerful green emission had been produced by 300 nm excitation. Following the results, materials that are resistant to different applications can use synthetic phosphors.
The impact of blockchain technology on supply chain efficiency: A review
Authors: Agrawal Shraddha , Kumar Tiwari Sanjiv , Kumar Singh Ritesh , Kumar Kaushik
Published: July 2024

As intricate global trade demands new solutions, traditional supply chains struggle with opacity, traceability, and security concerns. In response to the present apprehensions, Blockchain technology (BT) offers an appealing solution through its decentralised and transparent ledger. This paper critically examines the transformative impact of BT on supply chain efficiency, exploring its potential to revolutionise traditional, often opaque, and error-prone systems. This study utilises a systematic literature review of 75 selected papers to provide insights into how blockchain technology is integrated into supply chain management, showcasing its potential. The paper aims to provide a balanced and nuanced perspective on the impact of blockchain technology on supply chain efficiency. It highlights the transformative potential of this technology while emphasising the need for careful consideration of its challenges and limitations before wide-scale adoption.
Feasibility of using coal as reinforcement in dissimilar welded joints: Comparative analysis
Authors: Zass Keegan J. , Msomi Velaphi , Mabuwa Sipokazi
Published: July 2024

This study explores the possibility of using coal as reinforcement in dissimilar welded joints. The study involved joints of AA5083 and AA6082 alloys, which underwent friction stir welding (FSW), friction stir processing (FSP), and FSP with added coal powder (FSP+Coal). Microstructure analysis, microhardness testing, tensile tests, and fracture surface analysis were evaluated. The results indicated that FSP+Coal joints exhibited promising mechanical properties, with failure initiation at 130 MPa and a tensile strain of 6%, and complete failure at an ultimate tensile stress (UTS) of 144 MPa and a tensile strain of 9.5%. In comparison, FSP joints showed failure initiation at 130 MPa and a strain of 8.5%, and complete failure at 90 MPa and a strain of 14%. Additionally, FSP+Coal joints demonstrated a higher average hardness (8.3% higher than FSW joints and 4% higher than FSP joints), supported by fracture surface and microstructural analyses indicating a finer grain size of 13.15 μm in FSP+Coal joints, compared to 12.79 μm in FSP joints and 39.74 μm in FSW joints.
Influence of laser power on mechanical properties of FGM of SS316L and IN625 fabricated by direct metal deposition
Authors: Singh D. Dev , Arjula Suresh , Reddy A. Raji
Published: July 2024

Direct Metal Deposition (DMD) is a metal Additive Manufacturing (AM) process. It is used for producing sustainability Functionally Graded Materials (FGM) and repairing of sophisticated parts. In this present research, a commercially available DMD machine deposited three partial FGM blocks of size 26 mm wide × 34 mm thick × 32 mm heights. The commonly influence parameters on Ultimate Tensile Strength (UTS) are scan velocity and laser power. The powders used for deposition were Stainless Steel 316L (SS316L), Inconel 625 (IN625), and their three different compositions. ASTM E8 tensile samples were cut from those blocks by wire cut-EDM. Micro-tensile tests were carried out on ASTM E8 samples using a SHIMADZU micro-tensile machine. The results revealed that partial FGM sample-2 had high sustainability UTS of 532 MPa as compared to remaining two samples. It is illustrated that for joining two dissimilar materials to obtain high UTS thick layered (i.e., thickness more than 1 mm) gradient path method should be selected at the medium laser power available on the DMD machine. However, the sample-3 has higher hardness at high laser power.
Digital fabrication with FDM 3D printing on prototype development of toys: Additive manufacturing and sustainability
Authors: Kumar Rana Amit , Kundu Sanjib , Kayal Sourav
Published: July 2024

Additive manufacturing, commonly referred to as 3D printing, is currently one of the most dominant developments in the manufacturing sector. Consumer demands for more customized goods and services, in conjunction with the emergence of advanced manufacturing technologies, are influencing changes in the scope and distribution of manufacturing. In this work, the function of digital fabrication, one of these advanced manufacturing process technologies, is examined. The Digital Manufacturing and even other advanced manufacturing technologies have a significant footprint in all future manufacturing endeavours because of the robustness and mass customization that they provide. The Fused Deposition Modelling (FDM) is a sustainable method used extensively for the development of prototypes for toys. The present study investigates the potential of FDM process as a method for prototype development. Additionally the advantages of FDM process from the viewpoint of sustainable manufacturing integrating innovativeness and do-it-yourself approach at home driven by consumer demand for products such as toys will also be investigated. 3D printing technology such as FDM process, where objects such as toy prototypes are constructed by adding materials layer by layer has been in the forefront of various Digital Manufacturing techniques as it reduces material wastage thereby optimizing resource utilization.
Design and analysis of light weight swing arm using generative design concept
Authors: Gupta G. Srinivasa , Prithvi CH. , Chowdary S. Jayanth
Published: July 2024

A Swing arm is a mechanical device that connects the rear wheel of the motorcycle to its body, allowing it to pivot vertically. It holds the rear axle firmly while pivoting to absorb bumps and suspension loads induced by acceleration and braking. Swing arm can be single or double-sided and has appeared in a variety of geometries. The original version consists of a pair of parallel pipes holding the rear axle at one end and pivoting at the other. A shock absorber is mounted just before the rear axle and attached to the frame, below the seat rail. The primary concern is to design a lightweight swing arm that can replace conventional motorcycle swing arm design, which consists of tubular sheet metal structure throughout the swing arm neglecting the stress-induced at various positions along the length of the swing arm, i.e. (from pivots to axle blocks). The vehicle selected for this project is Yamaha FZ-S V2. The material chosen for the swing arm are Al 6061, Al 6061 T6, and Al 7075. This project uses an iterative design method called Generative design to design a lightweight swing arm without compromising the mechanical properties and performance of its counterpart. Analysis of the part will be carried forward using static Analysis comprising various load cases and extreme load conditions. The whole design and analysis process is carried forward using Autodesk Fusion 360. This swing arm design involved economic utilization of material as it reflects the in the analysis through induced stresses.
Performance of single slope solar stills: A comparative study of conventional and modified stills with nanofluid and reflectors
Authors: Kumar Panangipalli Vishwanath , Hallika Pindiprolu Mani Saraswathi , Maharana Divya , Ghanapuram Naveen
Published: July 2024

Nature has naturally desalinated water for centuries through the process of solar heating, where oceanic water transforms into vapor and then returns to Earth as freshwater precipitation. Freshwater is vital for sustaining life, but growing populations, industrial expansion, and increased agricultural production have created a rising demand for it. Desalination has emerged as a potential solution to address water scarcity. Existing desalination technologies fall into two categories: single-phase processes like reverse osmosis and electro-dialysis, and phase-change processes such as distillation and solar stills. While single phase processes provide freshwater, some rely on non-renewable fossil fuels for energy, indirectly contributing to greenhouse gas emissions. Solar distillation, in contrast uses renewable energy from the sun, offers a promising and sustainable alternative for freshwater production. Solar stills employ shallow water basins within enclosed structures, as moisture collects on the interior surface of the glass cover, cooled by natural airflow. In this study, two 250 X 250 mm2 single slope solar stills were designed, one conventional and the other modified with nanofluids and reflectors. The experiment assessed their performance in Hyderabad’s typical climate, with a glass cover slope of 17.45°. Both stills operated with a 1 cm water depth (500 ml) to observe the water distillate output. Readings were recorded for two different nanofluid concentrations (considering 0.08% and 0.1% of Cerium Oxide nanoparticles by volume mixed with water) allowing for a comparison of their cumulative hourly yields and effectiveness in increasing freshwater output.
Investigation & Optimization of WEDM Process Parameters using Inconel 690
Authors: Dusanapudi Sivanagaraju , Krupakaran R.L. , Kumar Anshuman , Venkat K. Sai , Shanmukh Akash , Ganesh Lalisetti , Muhsen Muntadar
Published: July 2024

Wire Electrical Discharge Machining (WEDM) represents a pivotal process in the fabrication of high-strength materials such as Ni-based alloys, which find extensive application in aerospace and nuclear industries. In this study, the machining parameters have been considered as Spark on time (Ton), wire-speed (WS), Servo Sensitivity (FR), and gap voltage (GV). The machining performance on Inconel 690 has been identified with the help of Cutting speed (CS) and average Surface roughness (SR) through WEDM using Molybdenum (Mo) wire. Taguchi’s philosophy has been considered in designing the experiments. The performance characteristics were analysed using a main effect plot and Analysis of Variance (ANOVA). The most significant parameter has been observed as Ton. Furthermore, a hybrid optimization technique has been employed using ANN coupled with MOJAYA to obtain the optimum machining parameters. The confirmation tests have been conducted has maximum percentage of error has been found as 7.88%. The said hybrid techniques was provided optimisation results within 4.65 seconds and identified as suitable techniques for optimisation results for Inconel-690
Microwave joining of SAF 2507 and optimization of elemental constitution using design of experiments
Authors: Singh Parminder , Prajapati D.R. , Sehgal Shankar
Published: July 2024

This study focuses on fabrication of SAF2507 similar joints with modified microwave hybrid heating (MHH) method and optimization of the elemental constitution based on energy dispersive spectroscopy (EDS) results. Major input parameters were in this work were filler powder (P), number of graphite rods (R) and process time (T). Each input parameter was varied to three different levels; such as P1, P2 and P3 being no powder, nickel powder and SS304 powder respectively; R1, R2 and R3 being 6, 8 and 10 number of graphite rods respectively; T1, T2 and T3 being 480, 540 and 600 seconds respectively. Experiments were performed as per L9 array based experimental design. EDS based elemental constitution results were used during optimization purpose. Weight percent of Cr, C and Ni have been considered for optimization. Additionally, the mechanical characterization of joints has also been carried out using micro-hardness tests.
Advancements in 3D Printing Materials for Diverse Industries: A Review and Future Prospects
Authors: Kumari Soni , Vishwakarma Prachi , Abhishek Kumar
Published: July 2024

3D printing has brought significant changes in many industries. It helps to create products with impressive strength and versatility. This paper aims to investigate and evaluate the different types of materials used in 3D printing, evaluating the advantages, disadvantages, and applications of different materials. It majorly focuses on thermoplastic, metal-based materials, and hybrid and composite materials. This paper also provides the current and future scenarios of 3D printing. This review covers all valuable insights into a large spectrum of different types of materials used in 3D printing and provides a small glance at these transforming industries. As the study expands the development of innovative materials and printing techniques will surely come to the surface and will expand the possibilities of 3D printing applications in the future.
Comparison of Effect of Ferritic Nitrocarburising on En-19,En-24 and En-37 Steels
Authors: Venkata Ramana M. , Babu Jalumedi , Renukuntla Harshith , Reddy Kothi Harshith
Published: July 2024

Nitrocarburizing is one of the prominent surface treatment methods for steels. The effects of ferritic nitro carburizing on En-19, En-24 and En-37 steels are compared. Microstructural investigations of FNC treated samples are carried out. Micro hardness profiles of FNC treated steels are drawn. Further wear investigations are carried out. It is observed that FNC treated En-19 steel has more wear resistance in comparison to En-24 and En-37 steels.
Roles of IoT, Big Data Analytics, and Cyber-Physical Systems in a Sustainable Manufacturing
Authors: Ikumapayi O.M. , Laseinde O.T. , Akinlabi E.T.
Published: July 2024

The convergence of big data analytics, cyber-physical systems (CPS), and the Internet of Things (IoT) is causing a fascinating revolution in the manufacturing sector. The convergence known as "Industry 4.0" is expected to bring about a symphony of sustainability, adaptability, and efficiency where machines move in time with real-time data. The maestro at this point is big data analytics, which translates these tunes to improve the whole thing from inventory control to machine maintenance. By permitting machines to separately adjust settings, act to fluctuating circumstances, and cooperate with one another, CPS bridge the gap amid the digital and physical worlds. This materializes into an astonishing ballet of intelligent automation. But regardless of this fascinating music, there are trials waiting in the shadows. Robust cybersecurity procedures are essential to address worries about data security and privacy, and continuous research and development is compulsory to manage the multifaceted integration and standardization of several technologies. Cautious planning and oversight are also compulsory due to ethical worries about algorithmic prejudice and job movement. The manufacturing industry is full of potential for invention and sustainability, even in the face of these dark clouds. Let us not be overwhelmed by the hindrances in the way of this uprising, but relatively use them to our benefit to generate a harmonious prearrangement of responsible solutions. Industry 4.0 will be protected to dance not just with data but also with beliefs, safety, and sustainability by means of continuing research, transparent communication, and investments in labor force development. This will pave the way for a upcoming in which humans and robots work collectively for an improved tomorrow. The main concepts of Industry 4.0 are outlined in this paper, along with its prospects, complications, and condition for an all-encompassing strategy.
Material removal rate in AJM of zirconia ceramic using silicon carbide abrasive: Investigation, modelling, and optimization
Authors: Ranjan Samantaray Soumya , Ranjan Das Sudhansu , Dhupal Debabrata
Published: July 2024

This research focuses on material removal rate in abrasive jet machining (AJM) of zirconia ceramic under varying process conditions (grain size of silicon carbide abrasive, air pressure, stand-off-distance). Combined approach of orthogonal array, and response surface methodology are respectively, applied for assessment, predictive modelling as well as response optimization. The influence of air pressure emerged as the most critical factor in enhancing MRR during AJM of zirconia ceramic. At elevated pressures, the surface morphology exhibits characteristic deep chipping and larger crater marks. The proposed predictive model for MRR utilizing the regression method proves effective, demonstrating adequacy, statistical significance, and probabilistic validation, indicated by its high R2-value (0.995), P-value below 0.05 (0.016), and substantial AD-test P-value (0.327). By employing DFA to solve the response optimization problem, optimal MRR (0.0000619 gm/min) for AJM of zirconia ceramic is achieved at abrasive grain size of 750 μm, air pressure of 7 kgf/cm2, and stand-off distance of 2 mm.
Detailed Analysis of Wind as an Energy Source for Achieving Sustainable Energy Generation
Authors: Awasthi Ankita , Abdulhussein Hameed Ali , Kalra Ravi , Kaur Keer Priyameet , Nijhawan Ginni , Mayuri K.
Published: July 2024

Currently, the world’s energy system is shifting towards sustainability in an attempt to reduce environmental impacts of climate change and ensure energy security. The article states a discourse on different mechanical progressions as well as arrangement measures aimed at addressing these challenges counting progressed determining devices, energy capacity innovations, and grid framework updates. The details about the wind energy system installations across the world and its potential output is being discussed that gives insight about how wind energy systems can be beneficial at different sites. The economic and natural challenges are provided that will make the decision-making process about the capacity to which dependency on wind energy can be made. The wind energy system installations need a thorough research and funding from the various institutions for its more reliable and efficient working. The various researches, investment, and commitment from governments, communities, and other sectors are basic to opening wind energy’s full potential and realizing its assurance as a energy proving source feeding power to the grid.
Sustainability in anticancer drugs development
Authors: Chaudhary Arpna , Kaur G.
Published: July 2024

Cancer remains one of the most fatal disease threats to mankind. As the development of healthcare and medical science it is important to come up with a sustainable solution to deal with cancer treatment. Despite the fact that many of the approved drugs still exhibit high systemic toxicity, primarily as a result of their lack of tumor selectivity and current pharmacokinetic drawbacks (such as low water solubility), which adversely affect drug circulation time and bioavailability, anticancer research has produced impressive results in recent decades. The sensitivity of anticancer medications to various parameters has been proven by stability tests, which were conducted under gentle settings during their formation or during stressful exposure to high temperature, hydrolytic media, or light source. Because of this, the development of degradation products is evaluated in pharmaceutical formulations as well as in hospital waste released into the environment. Many formulations have been created to date with the goals of enhancing medication stability, lowering hazardous side effects, and attaining tissue-specific drug targeting. In targeted cancer therapy, the creation of prodrugs offers a viable approach to enhancing the stability, effectiveness, and selectivity of active ingredients. According to recent research, anticancer medications can be made more soluble, stable, and pharmacokinetic by incorporating them into vesicular systems like polymeric micelles or cyclodextrins or by using nanocarriers containing chemotherapeutics that bind to monoclonal antibodies. In this work, we provide an overview of the most recent developments in our understanding of the creation of potent, very stable anticancer medications that are either encapsulated in nanosystems or designed as stable prodrugs.
Examining the Relationship between Biotech Crop Cultivation and Global Food Security Sustainable Index: A Comparative Analysis from 2012 to 2018
Authors: Arun Vanya , Kumar Kalagatoori Archakam Jayasheel , Kumar C Praveen , Nagpal Amandeep , Kumar Chandra Pradeep , Ali Abd Ulabbas Abedi Tamam
Published: July 2024

This study examines the dynamics between the cultivation of biotech plants and food protection on a global scale from 2012 to 2018 which will ensure sustainability in food. The use of facts from the worldwide food security Index (GFSI) and biotech crop cultivation regions, we analyze modifications in food security metrics alongside developments in biotech crop adoption across various international locations. Our findings reveal intriguing patterns, including extensive increases in biotech crop cultivation in Brazil and the United States, coinciding with terrific enhancements in GFSI scores in nations like Chile, Uruguay, and Argentina. Conversely, a few countries, such as Burkina Faso and Myanmar, exhibited high-quality shifts in GFSI despite stagnant biotech crop cultivation. Furthermore, simultaneous will increase or decreases in each biotech crop cultivation and GFSI rankings were observed in positive international locations, underscoring the complicated interaction between biotech crop adoption and food security effects. Moreover, we discuss the importance of considering food security at each national and household stages, highlighting the need for nuanced analyses of biotech crop contributions to general food security.
Comparatively Study of Non-Destructive test with different methods in various curing days
Authors: Pahade Chandramohan , Parmar Umang , Salaam Ahmed , Rao D S N M , Manjunatha  , Singla Atul , Rambabu Gottipati Venkata
Published: July 2024

In non-destructive testing, materials, components, or assemblies are inspected, tested, or evaluated without being destroyed. In nondestructive testing, materials, components, and assemblies are evaluated for quality and integrity without damaging them. The use of non-destructive testing (NDT) is a popular method for assessing the strength and durability of existing concrete structures. An ultrasound pulse velocity test and a rebound hammer test are included in the NDT test. An NDT test includes both ultrasound pulse velocity testing and rebound hammer testing. Strength tests are conducted with rebound hammers, while quality tests are conducted with ultrasonic pulse velocity tests. A lab-made concrete cube was tested on three different ages-seven, fourteen, and 28 days-without destroying it. There were 15 cubes that were treated using non-destructive methods. Using both Schmidt rebound hammer and ultrasonic pulse velocity tests, we determined which non-destructive testing method was faster. In addition to surfaces, Schmidt rebound hammers are the toughest tools to use. Rebound number and concrete strength seem to be connected. Schmidt hammers were employed in both vertical and horizontal settings. Concrete’s ultrasonic pulse velocity is mostly determined by its identity and modulus of elasticity, that are motivated by the substances used in making the concrete in addition to its placement, compaction, and curing techniques.
Comparatively Study of Compressive Strength of Self-Compacting Concrete with Different Concrete Grade
Authors: Pahwa Shilpa , Gawande Sandeep , Salaam Ahmed , Ramesh G. , Helena Raj Vijilius , Dutt Amit , Rao G. Ananda
Published: July 2024

In SCC, also called self-compacting concrete (SCC), voids are filled by its own weight, which prevents vibration. Large office building construction in Japan can significantly reduce noise levels on construction sites and associated environmental effects by implementing the use of SCC. According to the method, gravel makes up 50% of the concrete mix's packed density, while sand makes up 50% of mortar's packed density. Because gravel and sand are considered independently, SCC has a relatively high paste content. Thus, many SCC mixes are stronger than they should be. Recently, there has been a greater acceptance of the use of SCC. Concrete is a crucial and often utilised building material, hence attempts must be made to make it better by, for instance, constructing structures with enhanced mechanical and durability properties. The behaviour of concrete’s compressive strength and its splitting tensile strength is correlated. Analysis and experimental testing of self-compacting concrete (SCC) from different concrete classes were conducted. It was expected that both types of concrete would reach their desired compressive strengths of 25 N/mm2, 30 N/mm2, and 35 N/mm2 at 7, 14, and 28 days. Concrete sample measuring 150 mm in cube shape had their compressive and splitting tensile properties evaluated at 7, 14- and 28-days using compression testing apparatus.
Role of Quantum Dots and Nanostructures in Photovoltaic Energy Conversion
Authors: Shah Rushil , Saha Abhijit , Najah Zahraa , Prakash Akula , Reddy Uma , Nagpal Amandeep , Haripriya V.
Published: July 2024

Nanostructures and quantum dots have substantial effects on enhancing photovoltaic energy conversion efficiency, as evidenced in this comprehensive study. Materials that are nanostructured and nanosized particles are commonly used to address the urgent issues related to energy conversion. The use of nanostructured substances to address issues with energy and natural resources has garnered a lot of interest lately. Directional nanostructures in particular show promise for the conversion, collection, and storage of energy. Due to their unique properties, such as electrical conductivity, mechanical energy, and photoluminescence, quantum dots made from carbon (CQDs) and graphene quantum dots (GQDs) have been integrated into hybrid photovoltaic-thermoelectric systems (PV-TE). It evaluates the effects of nanostructures on solar energy technologies, in particular how they can improve power conversion and light absorption in solar cells. Optical light detectors, which transform photonic energy into signals that are electrical, are among the many optoelectronic uses of CQDs that have drawn attention because they are essential components of contemporary imaging and communication systems, such as visible light cameras, machine vision, medical X-ray and near-infrared image processing, and visible light detection devices. Besides supercapacitors, the study investigates how nanostructures could play a crucial role in contributing to addressing the global energy crisis sustainably, by working as photocatalysts for hydrogen synthesis and supercapacitors.
Sustainability in Electromagnetic Metamaterials: Synthesis, Applications, and Future Directions with Challenges
Authors: Bhavsar Keval , Ahmed Shaymaa , Pal Singh Pawar Mayur , Kumar C Vivek , V Revathi , Singh Navdeep , Prasad S.V.S.
Published: July 2024

This paper is about sustainable Electromagnetic Metamaterials (EM-MM), which are a new class of artificial materials with unique electromagnetic properties that cannot be found in nature. These materials are made from discrete micro and nanoscale objects which resonate, allowing for precise control over how they interact with electromagnetic waves, and hence, leading to unheard of functionalities. Thus the need for sustainable synthesis methods for EM-MM has become paramount to mitigate the quantity of resources associated with conventional fabrication techniques. Renewable resources like biopolymers that mimic natural patterns are examples of the sustainable use of bio based synthetic material pathways. This may guarantee sustainability through fabricating additive manufacturing strategies, especially 3D printing innovation where fabric statement is controlled only as required, diminishing waste. With all this recycling and up cycling offer opportunities for development and cost reduction while reducing the natural impacts related to sustainability. There are several different domains have benefited from the application of EM MM, for example solar energy harvesting offer potential for sustainable power generation, imaging uses met material lenses which have superior resolution and sensitivity, while in telecommunications met material antennas ensure to transmit and get signals more successfully. But there are still a few issues that still need to be resolved in electromagnetic met materials. Future directions include the research of incorporating a plan of new types of electromagnetic composites with upgraded qualities and sustainable synthesis strategies. Applications of technology require to overcome practical challenges such as integration, toughness, and cost-effectiveness while assessing societal implications, financial, and social affects. For the sustainable advancement of metamaterials in order to deal with major societal concerns, minimizing their natural impressions requires collaboration and moral concerns.
Sustainable Compositions and 3D Printing Technologies for Characterizing and Optimizing Recycled PETG
Authors: Prakash Mishra Ved , Hayder Nibras , Satyanarayana G.V.V. , Reddy Uma , Lakhanpal Sorabh , Meheta Ankit , Balram Yelamasetti
Published: July 2024

The packing industry makes extensive use of terephthalate polyesters because of their chemical durability and optical qualities. Examples of these materials are polyethylene terephthalate (PET) and glycol-modified PET (PETG). They also supply building materials, medical technology, technical polymers, and the textile sector. PET is made of terephthalic acid as well as ethylene glycol, whereas 30% of the diol moles in PETG are replaced with CHDM during synthesis. Detailed structural analyses of polyethylene terephthalate glycol-modified (PETG) are presented in this study. In two directions, PETG square blocks were tested with a load of 12,200 N to determine their durability and mechanical response. This block experienced a total deformation of 0.2318 mm under vertical loading, with the outer layer experiencing 33.93 MPa, and the middle layer experiencing 23.148 MPa. According to its performance under vertical stress, PETG had a maximum fatigue life of approximately 572,540 cycles and a minimal safety factor of 0.035116. A deformation of 0.23192 mm was recorded under horizontal loading. The bottom layer had a stress of 46.317 MPa and the top layer had a stress of 20.174 MPa, with a better fatigue life of 616,880 cycles and a safety factor of 0.35979.
Finite Element Analysis of 3D Printed Sustainable Polylactic Acid (PLA) Square Blocks
Authors: Singh Yadav Jitendra , Hayder Nibras , Dola Gobinda Padhan , Rao A. Kakoli , Swathi B , Jain Alok , Reddy Ch. Achi
Published: July 2024

The processing of eco-friendly materials and goods from sustainable resources is becoming more and more important worldwide; the production of bioplastics is expected to expand by 30% annually. By building materials layer by layer, additive manufacturing (AM) processes like fused deposition modeling (FDM) have the potential to lower greenhouse gas emissions and pollution from plastics. This study endeavors to bridge the space between technique of additive manufacturing and structural engineering principles, offering a complete analysis framework for assessing the viability and performance of 3-d printed PLA square block below varying operational conditions. The purpose of this study is to provide a complete analysis of the structural assessment of a Polylactic Acid (PLA) square block on applied significant loads in vertical as well as horizontal direction, revealing important findings about its deformation and stress distribution. Deformations were referred to inside the block, and strain various notably between layers. Furthermore, this become recognized because the most prone point for structure failure in the analysis, based totally on its fatigue assessment. Moreover, the study examined the structural analysis parameters, which highlighted fatigue-induced screw ups inside the block’s design lifestyles at important factors. PLA materials beneath similar stress situations can gain from these insights for his or her layout and protection.
Suspension Bridges Versus Cable-Stretched Bridges: A Comparison of Structural Behaviour and Performance
Authors: Singh Bharat , V Revathi , Dutt Amit , Venkata Santoshi Saraswati Swetha Nagini Rallabandi , Kumar Pramod , Saeed Hazim Y. , Sundeep M.
Published: July 2024

A suspension bridge and a cable-stayed bridge are compared under various loads and environmental conditions in this study. Under live, dead, and seismic loads, the research investigates axial forces, displacements, bending moments, and shear forces using advanced analytical methods and software such as CsiBridge, SAP2000, and Staad Pro. Steel plays a key role in the construction of suspension bridges and cable-stayed bridges, as this study thoroughly compares both types of bridges. Csi Bridge software is utilized in this study to investigate the axial force, displacement, bending moment, and shear strength of these bridges under various loading conditions. Cable-stayed bridges are recognized for their aesthetic benefits and structural efficiency for medium-to-long spans, and suspension bridges for their high tensile strength and durable design. The two bridge types exhibit different shear forces, displacements, and torsional values, underscoring their unique engineering designs.
Reduction of Green House Gases Emission: Towards a Sustainable Future
Authors: Bharti Meetali , Baswaraju Swathi , Nijhawan Ginni , Sharma Neeraj , Kumar Ashwani , Saleh Mashkour Muthana , Nalli Noel
Published: July 2024

In the current time the climate change risk has continued to intensify such that sustainability of the world is difficult, hence urgent emission mitigation actions. An in-depth analysis of GHG emission reduction policies is provided in this paper, with a focus on strategies involving technology, policy, society, and the economy. Regulations play a significant role in reducing the amount of carbon in the atmosphere, which gives a framework for the development of incentives for all sectors. The social cost of carbon is internalized by carbon pricing strategies like carbon taxes and cap-and-trade programs, which promote businesses to invest in greener practices and technological advances. Based on market structures, standards for energy efficiency and mandates for emissions targets may act as catalysts for changes in the market that push towards such low-carbon options. If a significant reduction in greenhouse gas emissions from major economic sectors like agriculture, industry, transportation, or energy is to be achieved, technological advancement will continue to be crucial. Consequently, renewables including solar power wind turbine systems and hydroelectricity plus others replaced fossil fuelled-based sources thereby reducing emission in generation of electrical power. Further, this is to be achieved through efforts in grid modernization, smart infrastructural development and energy storage facilitating the penultimate connection of vast amount of renewable power to electricity grids especially during peak times. Again, industrial sector seems promising as far as decarbonizing production processes and reducing emissions are concerned by adopting clean technologies such as carbon capture and storage (CCS), electrification and sustainable manufacturing processes. Additionally, changes that result into modification in the transport sector like electric vehicles expansion of public transportation systems, promotion of active transport modes amongst others also reduces emission levels whilst enhancing air quality. Transitioning to a low-carbon economy through financing will therefore require significant mobilization of investments towards clean energy infrastructure, sustainable land use practices and climate-resilient development. To direct capital towards low-carbon investment green bonds, carbon markets and public-private partnerships provide innovative financing mechanisms.
A Comparative Study of Analyzing the Impact of Various RCC Building Shapes on Wind Performance
Authors: Anusuya Devi V.S. , Anjaneyulu Madugula , Nagpal Amandeep , Kumar Chandra Pradeep , Sabah Abed AL-Zahra Jabbar Ahmed , Kumar Tyagi Lalit , Kishore N. Prabhu
Published: July 2024

The analysis, design, and creation of high-rise buildings necessitate a comprehensive information of wind-induced vibration, a critical factor that considerably impacts structural integrity. In this context, the existing study undertakes an exploration of the results of wind load on diverse building shapes, aiming to envision the most structurally stable configuration for multi-storey structures. Focusing usually on L-form and H-form buildings, the studies conduct a comparative evaluation to assess how wind load influences those distinct shapes. Each case study represents a structure located in Wind zone IV with Terrain category II, adhering to the specs mentioned in IS 875(part-3): 2015 standards. Emphasizing reinforced concrete (RCC) framed structures, the research delves into the repercussions of wind loads on critical parameters including maximum shear force, bending moment, and storey displacement. The resulting data is meticulously presented through tables and charts, elucidating the overall performance metrics for every case (H-shape and L-form) in terms of storey displacement, shear force, bending moment, and axial force. Eventually, an intensive evaluation is conducted to determine any disparities in structural behaviour and reaction to wind loads a number of the various constructing shapes, providing precious insights into most efficient design concerns for enhancing structural stability and resilience in excessive-rise constructions.
Bio-inspired Nanomaterial’s for Energy Harvesting and Storage: A Green Approach
Authors: Rajalakshmi B. , Singh Navdeep , Madhavi Arelli , Khan Irfan , Abdulhussein Hameed Ali , Singh Shivani , Laxman Rao A. Venkata
Published: July 2024

The advent of bio-inspired nanomaterials (BINMs) has the potential to address the global demand for sustainable and green energy technology. From osmotic power membranes to bio-hybrid light harvesting devices, BINMs mimic the complex systems and mechanisms found in nature. The assessment discusses a wide range of BINMs, including their synthesis, properties, applications, as well as their effects on the environment and manufacturing requirements, which have led to their increasing popularity. It focuses particularly on bio-inspired synthesis techniques, bioinspired electrode functionality, and the effectiveness of green chemistry in nanomaterial production. The advancement of renewable energy technologies and the enhancement of this promising field are highlighted as bio-inspired nanomaterials are explored and enhanced in energy programs, and their value is highlighted as they contribute to the advancement of renewable energy technologies.
Comparative Analysis of Various Bracing Configurations and Their Impact on Elevated Water Tank Performance
Authors: P K Jisha , Singla Atul , Sreevani Voruganti , Shankar Raman Ravi , Kumar Vishkarma Manoj , Albawi Ali , Ganesh M.
Published: July 2024

During a few extremely distressing earthquakes in India, R.C.C. elevated water tanks suffered significant damage or collapsed. This may have been brought on by incorrect staging geometry as well as ignorance of how the tank's supporting system should behave in the event of an earthquake. The elevated water tank is made up of structural components such as footings, beams, columns, and slabs. Subjected loads are passed between these components and ultimately to the soil's sub-grade. When an overhead tank is advantageously analysed, the elevated water tank behaves differently for distinct types of loadings (Dead, Live, and Seismic). Various combinations of loads that support the possibility of occurrence are indicated by the codes for Indian standards. The primary goal of this research is to improve performance during earthquakes and complement conventional staging by better understanding the behaviour of various bracing systems. Equivalent static analysis of various bracing system types applied to the elevated circular water tank staging in the seismic zone are carried out using STAAD Pro. The axial force and maximum bending moment of the circular water tank are examined in the X, Y, and Z axes. Several models are used to calculate the axial force and maximum bending moment for staging with cross bracing, diagonal bracing, and alternating diagonal bracing.
E-Commerce Door Delivery Robot
Authors: Kumar Davala Karuna , Ganesh BVSNS , Tarun Raj C. , Chandra Prasad Sadige , Balasem Zayd A.
Published: July 2024

Delivery services have become nearly a cultural expectation with the spread of e-commerce and door delivery services. Nevertheless, carriage can be quite exhaustive and costly, primarily for multiple storey residences and businesses, applying conventional conventional delivery approaches. Delivery robots that can maneuver stairs are safety solutions for these issues. Using new technologies, these robots are designed to sense the environment and use mobile application software to help them climb stairs. They can also do much more than just deliver packages and can accommodate various sizes and weights of the packages involved. It will be essential to remember that stair-climbing delivery robots are the possible game-changers in e-commerce. These robots can be used to help cut on the delivery costs of the businesses, increase on the delivery efficiency and gain more satisfaction to the clients. Robotics has long been implemented in the automotive assiduity, but many other lines have realized the advantages of robotic automatization They can facilitate deliveries and allow customers to get them at a lower beak while having less of an effect on the environment.