Article
Multidisciplinary Sciences
Venkatesh Chenrayan, Gezahgn Gebremaryam, Kiran Shahapurkar, Kalayarasan Mani, Yasser Fouad, Md. Abul Kalam, Nabisab Mujawar Mubarak, Manzoore Elahi Mohammad Soudagar, Bashir Suleman Abusahmin
Summary: This study aims to develop a banana fiber sandwich composite to promote the sustainable utilization of bio-waste. The experimental and analytical results demonstrate that a sandwich core reinforced with 10% banana fiber can significantly enhance the flexural strength and modulus.
SCIENTIFIC REPORTS
(2023)
Article
Geosciences, Multidisciplinary
Lucille Carbillet, Fabian B. Wadsworth, Michael J. Heap, Patrick Baud
Summary: The strength of porous rocks varies depending on the porosity and grain size. Synthetic samples showed that different models are needed to accurately predict strength for high-porosity granular samples and low-porosity non-granular samples. A regime plot was proposed to determine the suitable micromechanical model for strength prediction based on porosity and grain size.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Mechanics
P. N. B. Reis, P. Sousa, L. M. Ferreira, C. A. C. P. Coelho
Summary: Nowadays, composite materials are widely used in engineering applications, but there is still a lack of understanding about their mechanical performance. Experimental tests were conducted to study the impact of thickness on the compression and multi-impact response of laminated E-glass/Polyester shells. The results showed that higher thicknesses led to higher compressive strength and stiffness in static response, with a difference of 252.6% between the thinnest and thickest shells. In terms of multi-impact response, the impact fatigue life increased 17.4 times within the analyzed thickness range due to different damage mechanisms.
COMPOSITE STRUCTURES
(2023)
Article
Multidisciplinary Sciences
X. D. Lei, X. Q. Wu, Z. Zhang, K. L. Xiao, Y. W. Wang, C. G. Huang
Summary: A machine learning model was established to predict the ballistic impact energy absorption of unidirectional fiber-reinforced composite plates, showing a maximum error of 13% after training with 175 cases. The study also identified the gradient boosting regression algorithm as the most accurate for this ballistic impact problem, providing an effective solution for simulating composites with both high efficiency and accuracy.
SCIENTIFIC REPORTS
(2021)
Article
Polymer Science
Yinyuan Huang, Felix Thompson EShun, Junfeng Hu, Xutong Zhang, Jianping Zhao, Siqi Zhang, Rui Qian, Zhou Chen, Dingding Chen
Summary: This study investigates the low-velocity impact response of continuous CFRP and UACS laminates with vertical slits under drop-weight impact. The results show that the delamination damage of UACS laminates increases with the increase of impact energy. Moreover, compared to continuous CFRP laminates, UACS laminates have an approximately 80% increase in energy absorption at 7 J.
Article
Materials Science, Composites
Yusuf Kepir, Alper Gunoz, Memduh Kara
Summary: This study investigates the repeated impact response of GRP composite pipes under internal hydrostatic pressure. Prestressed pipes were subjected to low velocity repeated impact tests by applying different internal pressure levels. The changes in maximum displacement amount, maximum contact force, energy absorption capacity, and impact velocity were evaluated to understand the effect of different operating conditions on GRP performance.
POLYMER COMPOSITES
(2022)
Article
Engineering, Aerospace
Qiao Zhu, Zhefeng Yu
Summary: A modified SRD spring-mass model was developed to capture the strain rate effect on FRP laminates under LVI. The constitutive relations were modified using Yen-Caiazzo's function. The stiffness coefficients of the model were updated step-by-step using the variational method. Drop-weight tests and FEM simulations were conducted to validate the proposed SRD model. The lumped parameter model was found to be more efficient than traditional FEM.
INTERNATIONAL JOURNAL OF AEROSPACE ENGINEERING
(2023)
Article
Engineering, Manufacturing
Sergii G. Kravchenko, Chris Volle, Oleksandr G. Kravchenko
Summary: The study investigated the impact and compression behavior of thin carbon fiber epoxy plates made from prepreg platelet molding compound (PPMC) with different discontinuous fiber lengths. Results showed that longer fibers in discontinuous fiber composites provide better damage tolerance, as evidenced by larger absorbed energy and damage area compared to shorter fibers. The findings suggest that longer fibers can improve the damage tolerance of composite materials in compression after impact testing.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2021)
Article
Chemistry, Physical
Shunyuan Mao, Hui Wang, Xiaomao Wu, Huiling Zhang
Summary: The wave propagation and energy transmission of a one-dimensional three-segment composite granular chain considering elastic-plastic deformation has been studied. A finite element method-based axial symmetry model for elastic-perfectly plastic materials is used. The results demonstrate that the behavior of elastic-plastic granular chains under repeated loading and unloading is significantly different from purely elastic chains. The yield strength of the adjustable segment has a significant impact on energy dissipation and wave velocity, making it suitable for impact buffer design.
Article
Engineering, Civil
Qing Li, Tong-de Zhao, Chen Huang, Bing-bing Yu, Zheng-hua Gao, Kai Wang
Summary: In underground construction, it is common to spray concrete on the working surface to form a concrete-rock composite structure for reinforcement. Understanding the dynamic mechanics and damage characteristics of composite structures under impact loads is crucial for the safety of underground engineering construction.
KSCE JOURNAL OF CIVIL ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
X. N. Xu, Y. Tian, Q. B. Ye, R. D. K. Misra, Z. D. Wang
Summary: The study conducted a comprehensive analysis of granular structure (GS) and granular bainite (GB) in low-carbon alloy steel to elucidate their contribution to strength-ductility combination. It was found that specimens with GB exhibited higher tensile strength, ductility, and strain hardening compared to GS, with more apparent dislocation strengthening in GB and a higher volume fraction of M-A islands contributing to its strength. The improvement in ductility in GB may partly be attributed to sub-structural refinement and the presence of geometrically necessary dislocations array.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2021)
Article
Materials Science, Multidisciplinary
Yeqiang Bu, Yuan Wu, Zhifeng Lei, Xiaoyuan Yuan, Honghui Wu, Xiaobin Feng, Jiabin Liu, Jun Ding, Yang Lu, Hongtao Wang, Zhaoping Lu, Wei Yang
Summary: This study captured the dynamic interaction between LCFs and dislocations in ductile BCC HfNbTiZr HEAs, demonstrating how LCFs influence strength and ductility by promoting dislocation interaction. The observed double cross-slips caused by LCFs homogenously distribute dislocations onto various atomic planes, contributing to ductilization in HfNbTiZr. These findings offer insights into the deformation mechanisms of HEAs and suggest new strategies for designing ductile BCC HEAs.
Article
Materials Science, Multidisciplinary
Wei Fan, Dazhao Gou, Xiaohan Liu, Meng Li, Xizhong An, Kejun Dong, Ruiping Zou, Hao Zhang, Haitao Fu, Xiaohong Yang, Qingchuan Zou
Summary: The numerical reproduction of the formation of dense amorphous structure in granular materials under air impact through a coupled computational fluid dynamics-discrete element method model enables comprehensive investigation of the corresponding dynamics and mechanisms, including local structural evolution, interparticle interaction forces, and pore filling behavior. The analysis of the jamming phenomenon induced by the structural characteristics contributes to the theoretical and practical significance in the preparation of amorphous materials.
Article
Engineering, Multidisciplinary
J. Lausch, M. Takla, H-G Schweiger
Summary: This study investigates the specific energy absorption behavior of various right-angled profiles and proposes an approach to predict the crush properties of other profiles. By separating the resistance effect at the profile corners from the crushing force of the flat segments, the crush properties of different shapes and sizes of profiles were successfully predicted.
COMPOSITES PART B-ENGINEERING
(2022)
Article
Materials Science, Multidisciplinary
Renuprava Dalai, Sudipta Mohapatra, Siddhartha Das, Karabi Das
Summary: The present work aimed to study the effects of thermo-mechanical processing on the microstructure, impact abrasion wear, and corrosion resistance properties of Fe-17Mn-3Al (wt.%) steel matrix composite reinforced with 10 wt.% TiC. The results showed that thermo-mechanical processing improved the density, hardness, impact abrasion wear resistance, and corrosion resistance of the steel matrix composite due to the closure of pores and microvoids.
