Article
Engineering, Manufacturing
Mohanad Idrees, Ahmed M. H. Ibrahim, Emine Tekerek, Antonios Kontsos, Giuseppe R. Palmese, Nicolas J. Alvarez
Summary: In this study, woven glass fiber reinforced composites with controlled resin-rich layers (RRL) were fabricated using 3D vat polymerization technique. Testing showed that RRL did not improve in-plane or out-of-plane performance, but had an impact on interlaminar toughness depending on the resin's plastic zone size. The study concluded that the resin plastic zone size is a key resin property that determines whether improved toughness and strength are achieved with the presence of RRLs.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2021)
Article
Chemistry, Physical
Mahfuz Bin Rahman, Lvtao Zhu
Summary: This study experimentally investigates the low-velocity impact response of three-dimensional integrated woven spacer sandwich composites. The results show that the stiffness and energy absorption capacity are significantly affected by the core pile's heights and impact energies. The face sheet thickness does not have a significant influence on the impact response. Different damage and failure mechanisms were observed under different impact energies.
Article
Materials Science, Composites
Mucahit Kocaman, Hamdullah Cuvalci
Summary: Reinforcing the novolac matrix with glass fiber and graphite can produce high-performance friction composites. The morphology, microstructures, wear properties, and crystal phases of the materials were examined. The results showed that increasing the content of glass fiber and graphite improved the stability and wear resistance of the composites.
POLYMER COMPOSITES
(2022)
Article
Polymer Science
Nur Izzah Nabilah Haris, R. A. Ilyas, Mohamad Zaki Hassan, S. M. Sapuan, Atiqah Afdzaluddin, Khairur Rijal Jamaludin, Sheikh Ahmad Zaki, Faizir Ramlie
Summary: This study investigated the properties of basalt/woven glass fiber reinforced polymer hybrid polyester composites using FTIR, DMA, and TMA analyses. The results indicated that the hybrid composites exhibited higher mechanical and thermal properties compared to single reinforced composites.
Review
Materials Science, Multidisciplinary
Noureddine Ramdani, Mehdi Derradji, El Oualid Mokhnache
Summary: This article reviews the curing behavior, surface treatment, reinforcing mechanisms, and properties of polybenzoxazine/natural fiber composites. By selecting appropriate fibers and surface modification methods, the properties of the composites can be effectively controlled.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Engineering, Mechanical
Zhenjun Wang, Wenhao Zhao, Fang Wang, Xuefeng Teng, Changchun Cai, Jie Xiao, Yingfeng Zhang
Summary: This paper investigates the mechanical behavior and failure mechanism of a novel Al matrix composite reinforced with 3D orthogonal woven carbon fibers. Through numerical and experimental approaches, the quasi-static tensile behavior, local stress response, and progressive failure process are studied. The results show that the calculated stress-strain curve agrees well with the experimental curve, and the composites exhibit apparent periodic and heterogeneous stress distribution. Interface debonding and transverse cracking contribute to the nonlinear response and catastrophic rupture of the composites. Based on the validated model, the influence of fabric structure parameters on the macroscopic properties is further evaluated.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2023)
Article
Polymer Science
Agustinus Purna Irawan, Paula Tjatoerwidya Anggarina, Didi Widya Utama, Najid Najid, Mohd Zulkfly Abdullah, Januar Parlaungan Siregar, Tezara Cionita, Deni Fajar Fitriyana, Jamiluddin Jaafar, Agung Efriyo Hadi, Teuku Rihayat
Summary: The investigation of hybrid, woven, natural fiber-reinforced polymer composites as a substitute reinforcement for fiber polymer composites has gained significant interest. The research found that woven rattan and glass fiber hybrid composites exhibit good mechanical properties and thermal stability, making them suitable for automotive applications.
Article
Multidisciplinary Sciences
S. Sulardjaka, N. Iskandar, Sri Nugroho, A. Alamsyah, M. Y. Prasetya
Summary: The rapid growth of Water Hyacinth/Eichhornia crassipes has led to various problems, such as ecosystem, irrigation, and sedimentation. This study investigated the mechanical and physical properties of unidirectional and woven fiber reinforced epoxy resin composites made from water hyacinth wastes. The results showed that increasing the percentage of woven fiber led to a decrease in tensile strength and an increase in impact strength of the composites.
Article
Materials Science, Multidisciplinary
Yajun Liu, Canyi Huang, Hong Xia, Qing-Qing Ni
Summary: A new weaving technology is designed based on a self-built 3D weaving loom, and four typical 3D woven structure textile groups are manufactured. The angle-interlock woven structures exhibit better flexural performance in 3D textile composites.
MATERIALS & DESIGN
(2021)
Article
Polymer Science
Helin Li, Bin Lin, Chen Zhang, Liang Xu, Tianyi Sui, Yang Wang, Xinquan Hao, Deyu Lou, Hongyu Li
Summary: This study proposes a novel lightweight and two-stage semantic segmentation network called Mask-Point to accurately and efficiently detect surface defects in fiber-reinforced resin matrix composites (FRRMCs). Experimental results show the superior performance and accuracy of Mask-Point, compared to other typical 3D semantic segmentation networks. Furthermore, a distributed surface defects detection system based on Mask-Point is developed and demonstrates excellent performance in real-world applications.
Article
Mechanics
E. Kucukkalfa, G. Isikci, K. Yildiz, H. Cebeci
Summary: 3D weaving of I-beam structures can eliminate delamination and joints, making them more versatile for engineering applications compared to metal or traditional laminated composites. By utilizing polymeric foams and adhesive layers, the mechanical characteristics and structural integrity of the I-beams can be improved without adding significant weight. This study successfully combined polymeric foams with 3D woven glass fiber composites to create high-performance I-beam composites. The results showed that in-situ foaming supported by adhesive layers greatly enhanced the structural integrity under bending.
COMPOSITE STRUCTURES
(2023)
Article
Engineering, Civil
Ke Chen, Liguo Yu, Yonghui Cui, Mingyin Jia, Kai Pan
Summary: A novel 3D printing strategy for continuous glass fiber reinforced polylactic acid (CGF/PLA) composites was proposed, with optimized impregnation process and use of a specific compatibilizer to enhance interfacial bonding. The mechanical properties and microstructure of the final printed products were studied, showing flexural strength of 312 MPa and flexural modulus of 21.5 GPa. The fabrication strategies offer a low-cost and high-strength method for industrial application of 3D printed continuous fiber reinforced thermoplastic composites.
THIN-WALLED STRUCTURES
(2021)
Article
Dentistry, Oral Surgery & Medicine
Janine Tiu, Renan Belli, Ulrich Lohbauer
Summary: This study investigates the toughening effects of short fiber reinforced composites in a bilayer system, examining the alignment of fibers, matrix-fiber interactions, and distance traveled. The results show that the toughness of the bilayer system is optimal with maximum SFRC thickness, and fiber alignment helps reduce crack driving forces.
Article
Polymer Science
Weiping He, Xu Li, Piao Li, Shirui Fang, Anxin Ding
Summary: This study examines the hygroscopic behavior of vinylester resin and high strength glass fiber reinforced vinylester resin composites. The results show that the embedment of glass fiber effectively inhibits the moisture absorption and hydrolysis of the resin matrix. The mechanical properties test reveals a decrease in tensile and compressive strength with increasing immersion time.
Article
Mechanics
Liyong Wang, Long Chen, Wuzhou Li, Liangang Zheng, Yiping Qiu, Fujun Xu
Summary: Three-dimensional woven spacer composites (3DWSCs) have great potential in aerospace or transportation fields due to their high strength-to-weight and stiffness-to-weight ratios, as well as excellent skin-core debonding resistance. In this study, we designed and manufactured 3DWSCs with highly enhanced compressive strength and energy absorption by using bulked glass fibers as pile yarns to absorb more epoxy resin.
COMPOSITE STRUCTURES
(2022)
Article
Engineering, Electrical & Electronic
Ankita Roy, Amey Luktuke, Nikhilesh Chawla, Kumar Ankit
Summary: This study presents a method that combines material thermodynamics with diffusional kinetics to predict the growth characteristics of Cu6Sn5 in Cu-Sn alloy. The calculations indicate the limited role of IMC/Sn interfacial curvature in determining the rate at which the IMC layer thickens.
JOURNAL OF ELECTRONIC MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Weiheng Xu, Rahul Franklin, Dharneedar Ravichandran, Mohammed Bawareth, Sayli Jambhulkar, Yuxiang Zhu, Mounika Kakarla, Faizan Ejaz, Beomjin Kwon, Mohammad K. Hassan, Maryam Al-Ejji, Amir Asadi, Nikhilesh Chawla, Kenan Song
Summary: This research focuses on a new patterning technique to create ordered nanoparticle assembly in layered composite fibers. By using innovative tool design, unique material combinations, and precise rheology control, distinct layers can be retained during fiber spinning. This approach presents an unprecedented fiber manufacturing platform for controlled layer dimensions and nanoparticle manipulations, with potential applications in various fields including structural supports, heat exchangers, electrical conductors, sensors, actuators, and soft robotics.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Zoology
Clint A. Penick, Grace Cope, Swapnil Morankar, Yash Mistry, Alex Grishin, Nikhilesh Chawla, Dhruv Bhate
Summary: Biodiversity provides a rich source of innovation for bio-inspired design, but considering the large number of species can be overwhelming. The champion adapter approach, although beneficial, tends to focus on a narrow set of popular models while neglecting the majority of species. The comparative method, on the other hand, leverages biodiversity by drawing inspiration from a wide range of species.
INTEGRATIVE AND COMPARATIVE BIOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Tsimur Davydzenka, Daniel Sinclair, Nikhilesh Chawla, Pejman Tahmasebi
Summary: This study discusses the application of X-ray micro-computed tomography imagery in materials science, as well as the challenge of time-intensive segmentation of large data sets. Researchers propose a machine learning method to improve segmentation accuracy by increasing variations in training images, significantly enhancing accuracy in X-ray microscopy imaging.
MATERIALS CHARACTERIZATION
(2022)
Article
Engineering, Manufacturing
Athul Rajeev, Alex Grishin, Varun Agrawal, Bharath Santhanam, Derek Goss, Sridhar Niverty, Grace Cope, Clint A. Penick, Nikhilesh Chawla, Vikram Shyam, Ezra McNichols, Dhruv Bhate
Summary: This study investigates the influence of corner radius on the performance of regular hexagonal honeycomb under compression loading. The results show that corner radii increase the effective modulus and reduce maximum corner stress, but there exists an optimum corner radius beyond which stresses rise again. The presence of a corner radius shifts the failure mechanism from nodal fracture to plastic hinging, providing benefits for energy absorption applications.
JOURNAL OF MANUFACTURING PROCESSES
(2022)
Article
Materials Science, Multidisciplinary
Daniel Sinclair, Sridhar Niverty, Nikhilesh Chawla
Summary: X-ray microcomputed tomography was used to observe the localized corrosion of an AA7075-T651 sample immersed in a 3.5 wt% NaCl solution. Pitting initiated at cathodic intermetallic inclusions and showed a start-and-stop trend due to decoupling effects. Samples with higher extent of cold rolling had a finer and more homogeneous distribution of inclusions, leading to increased pit depth. Alternate immersion with intermittent drying destabilized the passive layer, while continuous immersion for 20 days produced a uniform and protective corrosion product layer.
Article
Engineering, Electrical & Electronic
Tarun Amla, Nikhilesh Chawla
Summary: Devices used in power electronics, such as GaN, SiC, and other wide band gap semiconductors, have high operating temperatures and require special die attach materials. Traditional solder materials are not suitable due to their limitations. Sintered nano-silver with high thermal and electrical conductivity is a good alternative. High thermomechanical stresses in these devices affect their performance and reliability. Virtual testing using finite element analysis is an effective method to overcome the challenges of building test vehicles and making predictions. The paper demonstrates a detailed reliability assessment using FEA simulations and an analytical fatigue reliability model.
JOURNAL OF ELECTRONIC MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
John A. Wu, Amey Luktuke, Nikhilesh Chawla
Summary: With the development of heterogeneous integration packaging, there is a growing demand for solders with ideal mechanical properties and melting temperatures. Sn-Ag-Cu (SAC) solders are a reliable alternative to PbSn solders, offering ideal mechanical properties and low melting points when alloyed with other elements. SAC-3Bi solder is found to have bismuth precipitation at room temperature after being aged, specifically on the exposed surface. Different cooling rates during solder solidification affect the coarsening rates, indicating varying diffusion and nucleation rates influenced by the cooling process.
JOURNAL OF ELECTRONIC MATERIALS
(2023)
Article
Engineering, Biomedical
Swapnil K. Morankar, Yash Mistry, Dhruv Bhate, Clint A. Penick, Nikhilesh Chawla
Summary: In this study, the unique layered structure of the fibers from deep-sea sponge Euplectella aspergillum was investigated using in situ tensile testing and fractography. The real-time observation revealed that the failure of fibers initiated from the surface and propagated towards the center through successive layers. The concentric layers sacrificed themselves to protect the central core through various toughening mechanisms. These findings provide insights for the design of architected materials for load-bearing applications.
ACTA BIOMATERIALIA
(2023)
Article
Materials Science, Multidisciplinary
Amey Luktuke, Arun Sundar Sundaram Singaravelu, Arun Mannodi-Kanakkithodi, Nikhilesh Chawla
Summary: The composition of alloying elements in Sn-rich solder is crucial for the performance of solder joints in electronic packages. This study investigates the impact of small additions of Indium (In) on the properties of pure Sn solder. Various characterization techniques reveal insights into the microstructure and interfacial intermetallic (IMC) layer formation, as well as the mechanisms behind the changes in these properties due to the addition of In.
Article
Materials Science, Multidisciplinary
Swapnil Morankar, Ankit Kumar, Amey Luktuke, Nikhilesh Chawla
Summary: The properties of the deep-sea sponge Euplectella aspergillum's spicules were investigated using in situ nanoindentation in different water conditions. The layered regions of the spicules were found to be softer and more compliant than the central core. Exposure to water resulted in a decrease in stiffness and hardness of the layered regions, indicating the influence of hydration and plasticization on the mechanical behavior. These findings provide insight into the role of spicule architecture and its constituents in determining mechanical properties in a water environment.
Meeting Abstract
Zoology
G. C. Cope, D. Goss, N. Chawla, A. Grishin, D. Bhate, C. Penick
INTEGRATIVE AND COMPARATIVE BIOLOGY
(2023)
Meeting Abstract
Zoology
C. A. Penick, G. Cope, D. Goss, A. Grishin, N. Chawla, D. Bhate
INTEGRATIVE AND COMPARATIVE BIOLOGY
(2023)
Article
Engineering, Manufacturing
Paul Paradise, Shawn Clonts, Sridhar Niverty, Mandar Shinde, Austin Suder, Tyler Smith, Thomas Broderick, Mark Benedict, Nikhilesh Chawla, Dhruv Bhate
Summary: This study examines the measurement capabilities of four different methods for thin-wall structures and finds that the standard micrometer is inaccurate, while the point micrometer and blue light scanning are reliable. Variations in section area for thin specimens can contribute to mechanical failure.
MANUFACTURING LETTERS
(2022)
Article
Engineering, Manufacturing
Paul Paradise, Shawn Clonts, Sridhar Niverty, Mandar Shinde, Austin Suder, Tyler Smith, Thomas Broderick, Mark Benedict, Nikhilesh Chawla, Dhruv Bhate
Summary: This study examined the measurement capabilities of four different methods for thin-wall structures, showing that point micrometer and blue light 3D scanning are reliable measurement methods while standard micrometer is not. The variation in cross-sectional area of thin specimens contributes to failure initiation at lower strengths and explains mechanical debits observed with reductions in thickness.
MANUFACTURING LETTERS
(2022)
