Article
Materials Science, Multidisciplinary
Danyang Li, Rui Wang, Fuwang Guan, Yujing Zhu, Feifei You
Summary: This study investigates the influence of distribution and quantity of shear thickening fluid (STF) on the stab resistance performance and weight of STF/Kevlar (SK) fabrics. The tests show that uniform distribution of SiO2 nanoparticles in Kevlar fabrics significantly improves stab resistance force and weight gain. Additionally, the added STF has minimal impact on fabric flexibility, and the high inter-yarn friction of SK fabric enhances yarns' resistance to relative motion, maximizing the impact energy dissipation.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Chemistry, Physical
Xingwei Wang, Luyao Bao, Chaoyang Zhang, Jianbin Zhang, Zhiquan Yang, Wufang Yang, Feng Zhou, Weimin Liu
Summary: Novel gelatinous shear thickening fluids (GSTFs) are fabricated by integrating low molecular weight gelators (LMWGs) into shear thickening fluids, showing desired properties with restricted quasi-static flowability and undamaged dynamic shear thickening character, which have significant application prospects.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Biochemistry & Molecular Biology
Rubin Wei, Bin Dong, Wen Zhai, Hui Li
Summary: This study designed and prepared three types of soft stab-proof materials by using shear thickening fluid (STF) treatment to enhance the material performance. The results showed significant improvement in puncture and impact resistance of the STF-treated fabrics. Mechanical properties of the fibers and fabric structure played crucial roles in resisting knives.
Article
Mechanics
Xiayun Zhang, Ting-Ting Li, Hao-Kai Peng, Ching-Wen Lou, Jia-Horng Lin
Summary: The research shows that stab-resistant composites prepared using STF and TPU have improved stab resistance performance while maintaining good flexibility. During the preparation process, the shear thickening effect of STF contributes to enhancing the performance of the composite material.
COMPOSITE STRUCTURES
(2022)
Article
Materials Science, Composites
Tao Hai, Fahad Mohammed Alhomayani, Teeba Ismail Kh, Rishabh Chaturvedi, Masood Ashraf Ali
Summary: The present study focuses on chemically modifying polyethylene glycol (PEG) to enhance shear thickening fluids (STFs) and improve the ballistic impact and quasi-static resistance performance of 3D E-glass fabrics. Two agents, oxalic acid and glutaric acid, were used to modify the carrier fluid (PEG 200), and the modified PEGs were characterized using FTIR analysis. Rheological analysis showed that the modified STFs (G/STF and O/STF) had higher peak viscosity compared to pure STF (P/STF). The improved viscosity resulted in enhanced ballistic resistance and quasi-static performance of the modified STF-treated fabrics.
JOURNAL OF COMPOSITE MATERIALS
(2023)
Article
Construction & Building Technology
Tanveer Hassan, Naveed Ahmad, Diyar Khan, Mohd Rosli Mohd Hasan, Akhlaq Aman, Umar Farooq
Summary: This study aims to enhance the viscoelastic properties of bitumen by using a dilatant or shear thickening fluid (STF) as an additive or modifier. Various tests were conducted to optimize the dosage of STF in the bitumen and evaluate its influence on the properties. The results indicate that adding 4% STF by weight of the binder improves high-temperature viscoelastic properties and bitumen performance grading.
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
(2023)
Article
Multidisciplinary Sciences
Vikram Rathee, Joia Miller, Daniel L. Blair, Jeffrey S. Urbach
Summary: We directly measured the stress at the boundary of a shear-thickening cornstarch suspension and found persistent regions of high local stress propagating in the flow direction. The structure of these propagating fronts was determined, including the profile of boundary stress and the nonaffine velocity of particles. We also measured the relative flow between the particle phase and the suspending fluid and found it to be highly localized to the fronts and changing direction across the front. These fronts are composed of a localized region of high dilatant pressure and low particle concentration.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Materials Science, Multidisciplinary
Minghai Wei, Kun Lin, Li Sun
Summary: This paper provides a comprehensive review of shear thickening fluids (STFs), including their basic properties, classification, and rheological mechanism evolution. It discusses the factors influencing the shear thickening behavior of STFs and presents several computational models. Furthermore, it summarizes the research progress of STF-based composites in various fields and explores the applications of STFs in energy dissipation.
MATERIALS & DESIGN
(2022)
Article
Chemistry, Multidisciplinary
E. Islam, L. Nebhani
Summary: This study investigates the influence of porosity and boron on the shear thickening behavior of hybrid mesoporous silica. The addition of boron and presence of porosity promote the formation of a frictional contact network, leading to a transition from continuous shear thickening (CST) to discontinuous shear thickening (DST) behavior.
MATERIALS TODAY CHEMISTRY
(2021)
Article
Engineering, Mechanical
Malith Prasanna, Arttu Polojarvi
Summary: The present study develops a particle breakage model for quasi-static DEM simulations of non-spherical particles that fail due to shear. The model is based on experimental observations and high resolution modeling. Accounting for particle breakage in DEM simulations improves the accuracy of the simulations and has an important effect on the shear strength of granular materials.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2023)
Article
Nanoscience & Nanotechnology
Junli Hao, Jie Ding, Gregory C. Rutledge
Summary: To enhance the impact resistance of protective clothing, this study replaced traditional woven microfiber fabrics with nonwoven mats of electrospun ultrafine fibers (UFFs) and incorporated shear-thickening fluids (STFs). The use of UFFs improved STF retention and shape stability due to their high specific surface area, small pore size, and large capillary force. The UFF-STF composite showed excellent performance with high breakthrough pressure and improved STF retention compared to composites based on conventional microfiber fabrics. The mechanical properties of the composite were affected by the rate of deformation, STF viscosity, and UFF morphology.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Materials Science, Textiles
Yaxin Sun, Wanli Xu, Wenfang Wei, Pibo Ma, Fenglin Xia
Summary: A novel auxetic weft-knitted fabric based on the re-entrant structure exhibits negative Poisson's ratio effect in all directions. It shows higher peak load and energy absorption capacity at quasi-static loading. The quasi-static stab resistance of the fabric strengthens with increasing puncture speed but stabilizes after reaching a certain value.
JOURNAL OF INDUSTRIAL TEXTILES
(2021)
Article
Mechanics
Vagish D. Mishra, Ashish Mishra, Avinash Singh, Luv Verma, G. Rajesh
Summary: The study demonstrates that impregnation with shear thickening fluid (STF) can enhance the ballistic performance of UD-UHMWP fabric, leading to increased energy absorption.
COMPOSITE STRUCTURES
(2022)
Article
Engineering, Civil
Guoshan Xu, Lichang Zheng, Wei Zhou, Changhai Zhai, Dongmei Wang
Summary: This paper investigates the seismic behavior of Squat Reinforced Concrete Shear Walls (SRCSWs) with or without openings through Quasi-Static Testing. Factors such as Shear Span Ratio (SSR), area ratio, and number of openings are considered. The results show that SRCSWs with openings are more prone to flexural failure, while those without openings tend to experience shear failure. The area ratio and SSR significantly affect the seismic response of SRCSWs, with increased ratios resulting in decreased bearing capacity and secant stiffness. The presence of multiple openings leads to concentration of cracks in the connecting areas. Therefore, the seismic design of SRCSWs should take the effect of openings into consideration to enhance their performance.
ENGINEERING STRUCTURES
(2023)
Article
Chemistry, Multidisciplinary
Mustafa S. Hamad, Catherine Boissier, Victor M. Calo, Julian D. Gale, Sten O. Nilsson Lill, Gordon M. Parkinson, Andrew L. Rohl
Summary: Two computational methods were used to study the slip deformation of simple molecular crystalline materials, revealing the critical influence of internal molecular rotations on slip barriers and deformation mechanisms. The results also provide new interpretations of slip-observed morphologies.
