Article
Mining & Mineral Processing
Xin Chen, Xiuzhi Shi, Jian Zhou, Enming Li, Peiyong Qiu, Yonggang Gou
Summary: The research utilized SHPB to test the high strain rate compressive behavior of cemented paste backfill (CPB). The results showed that increasing the cement content, tailings content, and curing age can improve the dynamic compressive strength and elastic modulus of CPB. Under dynamic loading, higher strain rates lead to larger increasing times of dynamic compressive strength, and there is an exponential correlation between dynamic compressive strength of CPB and strain rate.
INTERNATIONAL JOURNAL OF MINING SCIENCE AND TECHNOLOGY
(2021)
Article
Construction & Building Technology
Baofeng Huang, Xiangfei Zhang, Xiaofeng Ma
Summary: The uniaxial compression behavior of building sandstone at high strain rates is investigated using dynamic and static compression tests. It is found that the static compression strength of flattened cylinders is 50% higher than that of standard cylinders. The study also explores the relationship between strain rate and fracture damage, and analyzes the correlations between dynamic strength, strain rate, and dynamic modulus based on experimental results.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Construction & Building Technology
Kavita Ganorkar, M. D. Goel, Tanusree Chakraborty
Summary: Basalt fiber-reinforced concrete (BFRC) was dynamically characterized using a split Hopkinson pressure bar (SHPB), showing an increase in concrete strength with increasing strain rates. The dynamic increase factor (DIF) was found to range from 0.91 to 3.58 at different strain rates.
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
(2021)
Article
Chemistry, Physical
Muhammad Ameerul Atrash Mohsin, Lorenzo Iannucci, Emile S. Greenhalgh
Summary: The study conducted a dynamic tensile experiment on NCF carbon/thermoplastic material system, providing valuable information on strain-rate sensitivity and calculating the tensile strength at different strain rates. The increase in tensile strength was observed across varying strain rates, showcasing the material's behavior under dynamic loading conditions.
Article
Geosciences, Multidisciplinary
Zhoujie Gu, Rongxi Shen, Zhentang Liu, Enlai Zhao, Hailiang Chen, Zichen Yuan, Xiaomeng Chu, Jiawei Tian
Summary: Dynamic failure experiments were conducted on coal samples under dynamic load in a triaxial Split-Hopkinson pressure bar test system to study the dynamic characteristics of coal in a multi-axial pre-stress state. The experiments showed that the 3D pre-stress state significantly affects the dynamic failure of coal. The dynamic initial stress of coal increases linearly with strain, then grows at a reduced rate until the peak strength, and the mechanical curve rebounds notably. The dynamic strength factors of coal vary significantly with the increase of confining pressure.
NATURAL RESOURCES RESEARCH
(2023)
Article
Construction & Building Technology
Kyoung-Min Kim, Sangho Lee, Jae-Yeol Cho
Summary: This study establishes a standardized lubrication technique for a concrete split Hopkinson pressure bar (SHPB) test through experimental and numerical research. The results show that the frictional effect can be eliminated in the concrete SHPB test when a lubricant with a dosage of equal to or greater than 12 mg/cm(2) is applied.
CEMENT & CONCRETE COMPOSITES
(2022)
Article
Polymer Science
Xintao Zhu, Xiaojing Zhang, Wenjin Yao, Wenbin Li
Summary: Using a split-Hopkinson pressure bar test instrument with temperature control, this study tested the dynamic mechanical properties of silicone rubber at different temperatures and strain rates. The results showed that silicone rubber is sensitive to both strain rate and temperature, with the yield strength increasing with higher strain rates and showing temperature sensitivity at higher rates.
Article
Construction & Building Technology
Xing Chen, Changzhong Wang, Suwen Chen, Siyi Yi, Yong Lu
Summary: Low-iron ultra-clear float glass (LIFG) has become popular in landmark and large-scale buildings for its aesthetic characteristics. This paper investigates the dynamic mechanical properties of LIFG for blast resistance design by conducting quasi-static and dynamic tests. The results show that the dynamic compressive and tensile strengths of LIFG are strain-rate dependent, with the tensile strength being more sensitive to strain rate. The strain rate effect does not significantly affect the Young's modulus of LIFG.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Construction & Building Technology
Kyoung-Min Kim, Sangho Lee, Yongjae Yu, Jae-Yeol Cho
Summary: Dynamic increase factors (DIF) of concrete compressive strength have been proposed, but without considering the effect of coarse aggregate size. This study conducted experiments and numerical analysis to investigate the effect of maximum coarse aggregate size (Gmax) on DIF. The results showed that Gmax affected the dispersion of apparent DIF and values of pure rate DIF. Based on these findings, a guideline for fabricating specimens considering Gmax for concrete SHPB tests was suggested.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Janis S. Kimm, Jim A. Bergmann, Florian Woeste, Fabian Poehl, Petra Wiederkehr, Werner Theisen
Summary: This research conducted Split-Hopkinson pressure bar tests on quenched and tempered steel 42CrMo4 in different heat-treatment conditions to explore the deformation characteristics and the influence of microstructure on deformation. It provides a detailed understanding of the deformation of 42CrMo4 steel under various parameter values.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Energy & Fuels
Geli Zhao, Xing Li, Ying Xu, Kaiwen Xia
Summary: This study developed a novel experimental system to determine the dynamic compressive response of deep rocks, and validated the system using green sandstone. The experimental results showed that the dynamic compressive strength of the rocks is influenced by loading rate, confining pressure, and pore pressure. The most common dynamic failure modes were single shear failure and X-type conjugate shear failure. The friction angle remained constant while the cohesion depended on the loading rate. Water had a bidirectional effect on dynamic strength, facilitating crack propagation but also impeding pore structure damage.
GEOMECHANICS AND GEOPHYSICS FOR GEO-ENERGY AND GEO-RESOURCES
(2022)
Article
Materials Science, Multidisciplinary
Shizhuo Zou, Wanhong Guo, Shuo Wang, Yongtao Gao, Lingyun Qian, Yu Zhou
Summary: This paper investigates the dynamic mechanical properties and damage mechanisms of polypropylene fiber-reinforced cemented tailing backfill (PFRCTB) under different strain rate conditions. The results indicate that the strain rate enhancement effect of PFRCTB under dynamic loading is significant, and the presence of confining pressure significantly changes the stress-strain curve.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Engineering, Mechanical
Chenlin Liu, Weibin Wang, Tao Suo, Zhongbin Tang, Yazhou Guo, Yulong Li
Summary: This paper introduces a Combined Tension-Torsion Split Hopkinson Bar system that can load specimens synchronously under high strain rates. The system utilizes electromagnetic energy conversion technique and a new Electromagnetic-release Split Hopkinson Torsion Bar system to achieve precise control and generation of stress pulses.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2022)
Article
Engineering, Mechanical
S. Mirshafiee, M. J. Ashrafi, E. Mousavi
Summary: In this paper, a non-contact method based on a laser measuring system is proposed to measure the dynamic properties of materials using the split Hopkinson pressure bar test. The experimental results show good agreement with numerical simulation results. Moreover, this method can be used with shorter pressure bars, which reduces the cost of manufacturing and maintenance of the SHPB apparatus.
JOURNAL OF STRAIN ANALYSIS FOR ENGINEERING DESIGN
(2023)
Article
Materials Science, Multidisciplinary
Markus Felten, Michael Fries, Tomas Fila, Petr Zlamal, Jan Falta, Ondrej Jirousek, Anne Jung
Summary: Open-cell metal foams are porous lightweight materials mainly used for kinetic energy absorption, with the ability to significantly reduce the mass of structural designs. Manufactured by electrochemical nickel (Ni) deposition, these metal foams exhibit good mechanical properties adjustment capability.
ADVANCED ENGINEERING MATERIALS
(2022)