Article
Chemistry, Multidisciplinary
Hui Wang, Rui Yan, Hua Cheng, Mingmin Zou, Hua Wang, Kang Zheng
Summary: Syntactic foams with low density, low thermal conduction, and proper mechanical performance are important for aerospace, marine, and automotive industries. Phenolic-based syntactic foams were fabricated by combining hollow glass microspheres with phenolic resin. The foams showed reduced density and improved thermal stability and insulation performance. This work provides a feasible strategy to construct syntactic foams with low density and ideal thermal properties.
FRONTIERS IN CHEMISTRY
(2023)
Article
Polymer Science
Olusegun Adigun Afolabi, Krishnan Kanny, Turup Pandurangan Mohan
Summary: The mechanical properties of syntactic foam composites with hollow glass microspheres as fillers were studied, with a focus on flexural strength, modulus, and fracture surfaces. The results showed that the volume fraction and size variation of the filler had a significant effect on the flexural strength and bending modulus of the syntactic foam.
Article
Materials Science, Composites
Michael J. A. Smith, Zeshan Yousaf, Prasad Potluri, William J. Parnell
Summary: The mechanical response and thermal characteristics of HTM syntactic foams were studied, revealing their highly tunable nature and high compressibility at large strains with a high threshold for plastic deformation. The non-standard transverse strain behavior at high filling fractions was captured by Ogden-type strain energy models.
COMPOSITES SCIENCE AND TECHNOLOGY
(2021)
Article
Nanoscience & Nanotechnology
Mingming Su, Jiawen Li, Moqiu Li, Hai Hao
Summary: This study prepared aluminum matrix bimodal syntactic foams using the stir casting method, mixing alumina hollow spheres of different size ranges. The mechanical properties of bimodal syntactic foams were found to strongly depend on the average diameter of hollow spheres when mixing hollow spheres with different size ranges in equal volume. The mechanical properties of bimodal syntactic foams with different size hollow spheres decreased linearly with the increase in content of larger hollow spheres.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Mechanics
Nima Movahedi, Matej Vesenjak, Irina Belova, Graeme E. Murch, Thomas Fiedler
Summary: This study explores the dynamic compression behavior and mechanical properties of functionally-graded metal syntactic foams under different particle types and aspect ratios. The findings suggest that uniform metal syntactic foams with lower aspect ratios exhibit higher overall strength, and different particle types show varying responses at higher loading velocities. The dynamic deformation of FG-MSFs originates in the weaker layer and transitions to a stronger layer at higher strains, affecting the stress-strain response.
COMPOSITE STRUCTURES
(2021)
Article
Polymer Science
Simona-Nicoleta Mazurchevici, Dorin Vaideanu, Doreen Rapp, Cristian-Dragos Varganici, Constantin Carausu, Mihai Boca, Dumitru Nedelcu
Summary: Investigating biodegradable materials is crucial worldwide, aiming to find sustainable alternatives to replace plastics. This study focuses on mechanical and thermal properties, revealing the potential of biopolymers and proposing alternative plastic materials.
Article
Construction & Building Technology
Halim Kerim Bas, Weihua Jin, Nikhil Gupta
Summary: Recent studies have shown that cementitious syntactic foams (CSF) have great potential as a low density and high strength structural material. Solid borosilicate particles in CSFs were found to have adverse effects on ASR expansion and compressive strength, while CSFs showed no signs of loss of compressive strength even in extremely alkaline conditions. Scanning electron microscopy investigations suggest that CSFs are safe from ASR expansion and internal stresses due to their hollow geometry.
CEMENT & CONCRETE COMPOSITES
(2021)
Article
Materials Science, Textiles
M. Najeeb, M. T. H. Sultan, A. U. M. Shah, S. N. A. Safri, M. Jawaid, A. R. Abu Talib, A. A. Basri
Summary: This study tested the properties of pineapple leaf fiber composites derived from an underutilized variant of the Yankee pineapple plant. The treated samples showed improved bending strength and dynamic properties compared to the untreated samples, but had a lower cross-linked network.
JOURNAL OF NATURAL FIBERS
(2022)
Review
Polymer Science
S. Anirudh, C. G. Jayalakshmi, Anoop Anand, Balasubramanian Kandasubramanian, Sikiru O. Ismail
Summary: This article introduces a new class of lightweight materials called syntactic cellular foam made from epoxy matrix and hollow glass microspheres. It presents the properties, material characterization, and applications of this material, as well as evaluates its mechanical properties, dielectric properties, and functional properties. The review is particularly useful for designers and developers/manufacturers in marine, electronics, aerospace, and military/defense industries.
EUROPEAN POLYMER JOURNAL
(2022)
Article
Nanoscience & Nanotechnology
Xinyi Chen, Gang Cao, Xinyun Wang, Hao Fang, Pengpeng Chen, Ying Xu, Wangyan Nie, Shaohua Zeng, Yifeng Zhou
Summary: This study developed tear-shaped hollow polystyrene nanoparticles as an enhancing nanomaterial to improve the hydrophilicity, mechanical strength, and thermal stability of polyvinyl alcohol films. The synthesized foam films showed high transparency, excellent mechanical properties, and good thermal stability, surpassing pure PVA films. The research demonstrates the potential of tear-shaped hollow polystyrene nanoparticles in practical applications for polymer foams.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Yao Zhu, You Fu, Bin Xu, Zhitao Liu, Feiyun Chen, Xiaoan Wei, Xin Liao
Summary: This study compares solvent-based and solventless molding processes, and optimizes a sustainable solventless molding route for triple base propellants. The physicochemical parameters and mechanical behaviors of the propellants are comprehensively examined. The results show that the solventless propellant exhibits superior environmental adaptability and mechanical performance.
Article
Materials Science, Multidisciplinary
Kaiyu Wang, Jiaxin Chen, Zhengtong Han, Kai Wei, Xujing Yang, Zhonggang Wang, Daining Fang
Summary: Metamaterials with specific micro-architectures and customized design strategies can achieve programmability in thermal expansion and mechanical performances, improving thermal stability and structural stability in engineering devices.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2022)
Article
Engineering, Civil
Kartheek S. M. Sonti, Pavan Kumar Penumakala, Suresh Kumar Reddy Narala, S. Vincent
Summary: In this study, the compressive behavior of alumina hollow particles reinforced aluminum matrix syntactic foams (AMSF) was investigated using analytical, numerical, and experimental methods. The results showed that the FE solver ABAQUS could accurately predict the elastic and elastio-plastic behavior of AMSFs. The study also suggested that FE models have great potential in developing new materials and composites under compression loading.
ENGINEERING STRUCTURES
(2024)
Article
Materials Science, Ceramics
Zhongya Zhang, Chuncheng Wei, Ruixiang Liu, Yun Wu, Daoqian Li, Xuefei Ma, Lanyong Liu, Peng Wang, Yishan Wang
Summary: Experimental and theoretical analyses showed that the graphite interface layer had a greater impact on the thermal shock resistance of laminated ZrB2-SiC ceramics, mainly due to its higher thermal conductivity and smaller difference in thermal expansion coefficient.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Weiwei Sang, Hongsong Zhang, Shuaixia Liu, Wenbo Xie, Ruiyi Hou, Siqi Li, Hongjun Ma, Haoming Zhang, Xiaoge Chen, Xuhe Liu, Zefeng Zhang, Nan Wang, Yifei Zhang, Mengyan Zhang
Summary: Lu3+ doped Gd3TaO7 oxides were successfully synthesised, and the introduction of Lu3+ improved the lattice order and enhanced the mechanical and thermal properties of the material, making it a potential candidate for thermal barrier coatings.
CERAMICS INTERNATIONAL
(2023)
Editorial Material
Materials Science, Multidisciplinary
Nikhil Gupta, Tomoko Sano
Review
Materials Science, Multidisciplinary
Ashish K. Kasar, Nikhil Gupta, Pradeep K. Rohatgi, Pradeep L. Menezes
Article
Chemistry, Applied
Liwen Pan, Dewang Rao, Yiwang Yang, Junyi Qiu, Jianbo Sun, Nikhil Gupta, Zhiliu Hu
JOURNAL OF POROUS MATERIALS
(2020)
Article
Engineering, Manufacturing
Fei Chen, Jaime Zabalza, Paul Murray, Stephen Marshall, Jian Yu, Nikhil Gupta
ADDITIVE MANUFACTURING
(2020)
Article
Materials Science, Composites
Kaushik Yanamandra, Guan Lin Chen, Xianbo Xu, Gary Mac, Nikhil Gupta
COMPOSITES SCIENCE AND TECHNOLOGY
(2020)
Article
Materials Science, Composites
Xianbo Xu, Mariam Elgamal, Mrityunjay Doddamani, Nikhil Gupta
Summary: The research has established a general architecture using machine learning to accelerate the characterization and design process of nonlinear viscoelastic materials, converting elastic modulus to storage modulus. The accuracy of the transformation has been validated by testing on high density polyethylene matrix syntactic foams.
JOURNAL OF COMPOSITE MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Guan Lin Chen, Kaushik Yanamandra, Nikhil Gupta
Summary: The study focuses on developing methods for processing images to train machine learning algorithms to handle tomography datasets for defect detection in composite materials. A micro-CT scan is used to image an additive manufactured fiber reinforced composite material, and the microstructures are processed using the BSIF method for compression. The study shows that the convolutional neural network model performs well in fiber orientation prediction.
Article
Engineering, Electrical & Electronic
Priyanka Mahesh, Akash Tiwari, Chenglu Jin, Panganamala R. Kumar, A. L. Narasimha Reddy, Satish T. S. Bukkapatanam, Nikhil Gupta, Ramesh Karri
Summary: The Industry 4.0 concept advocates a digital manufacturing paradigm to enhance production efficiency and quality through the integration of various manufacturing technologies and systems.
PROCEEDINGS OF THE IEEE
(2021)
Review
Multidisciplinary Sciences
Kaushik Yanamandra, Dinesh Pinisetty, Atef Daoud, Nikhil Gupta
Summary: The rapid shift towards clean energy has increased the demand for batteries, particularly lithium-ion and lead acid batteries. This review paper highlights the importance of adopting a circular economy and effective recycling for batteries. Currently, the recyclability of lithium-ion batteries is less than 1%, while lead acid batteries have a recycling efficiency of over 99% in the USA and EU. Challenges and novel techniques for recycling lithium-ion batteries are also discussed.
JOURNAL OF THE INDIAN INSTITUTE OF SCIENCE
(2022)
Article
Computer Science, Hardware & Architecture
Harsh Srivastava, Hammond Pearce, Gary Mac, Nikhil Gupta
Summary: In this study, a digital binary image processing method was used to determine the fiber content in a 3D printed composite material part. The results showed successful measurement of fiber volume fraction with standard deviations below 0.15%. This method is important for assessing the quality of customized printed parts.
IEEE EMBEDDED SYSTEMS LETTERS
(2022)
Article
Materials Science, Composites
Jun Young Choi, Kaushik Yanamandra, Abhishek Shetty, Nikhil Gupta
Summary: A method is developed to simultaneously measure the Poisson's ratio and complex modulus of carbon fiber reinforced Acrylonitrile Butadiene Styrene (CF-ABS) composites using in-situ optical measurements and digital image correlation. The study reveals that the Poisson's ratio of CF-ABS composites is not constant over temperature. This work is important for composites where the shear deflection component should not be neglected and where variation of Poisson's ratio with respect to temperature is significant.
JOURNAL OF REINFORCED PLASTICS AND COMPOSITES
(2023)
Article
Computer Science, Hardware & Architecture
Caleb Beckwith, Harsh Sankar Naicker, Svara Mehta, Viba R. Udupa, Nghia Tri Nim, Varun Gadre, Hammond Pearce, Gary Mac, Nikhil Gupta
Summary: The increasing usage of digital manufacturing in safety-critical domains has raised concerns about the cybersecurity of the manufacturing process. This study quantifies the hypothesis by conducting a red team/blue team case study, which shows that the blue team can detect most of the modifications using statistical modeling and machine learning.
IEEE EMBEDDED SYSTEMS LETTERS
(2022)
Article
Automation & Control Systems
Hammond Pearce, Kaushik Yanamandra, Nikhil Gupta, Ramesh Karri
Summary: Additive manufacturing systems, such as 3-D printers, are vulnerable to cybersecurity threats due to the lack of defenses in the inexpensive microcontrollers they use. This study demonstrates the risk by designing and studying a malicious Trojan for AVR-based 3-D printers, showing how it can compromise print quality and reduce tensile strengths.
IEEE-ASME TRANSACTIONS ON MECHATRONICS
(2022)
Article
Materials Science, Multidisciplinary
A. Daoud, Atef. Y. Shenouda, M. T. Abou El-Khair, F. Fairouz, E. Mohamed, M. E. Abdel Aziz, K. Yanamandra, N. Gupta
Summary: Novel Pb composite foams with hybrid gas pores and Ni-coated fly ash microballoons were produced by direct melt foaming method. These Pb composite foams, with lower weight and larger surface area, can be used as an alternative to traditional Pb grids in Lead Acid Battery for transportation industry. The electrochemical performance of Pb grids in LAB and Pb composite foams was investigated and compared.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Review
Green & Sustainable Science & Technology
Kaushik Yanamandra, Dinesh Pinisetty, Nikhil Gupta
Summary: This review primarily focuses on the research on carbon-based additives in electrodes to enhance the efficiency of lead-acid batteries. These additives have the potential to reduce sulfation on electrodes and improve the cycle life of lead-acid batteries. The study reveals that more attention has been paid to additives in the negative active material electrode than in the positive active material electrode. The weight percent and particle size of carbon additives were found to impact battery cycle life.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2023)
