Article
Materials Science, Multidisciplinary
Zejian Xu, Yang Han, Changzeng Fan, Xiaodong He, P. J. Tan, Fenglei Huang
Summary: The study investigates the dynamic mode II fracture characteristics of Ti-6Al-4V using a novel 2-bar/double-shear impact loading technique. Results show varying fracture mechanisms at different loading rates, influencing the dominant failure mechanism of the material.
MECHANICS OF MATERIALS
(2021)
Article
Engineering, Mechanical
Yulong Ge, Yong Xia, Qing Zhou
Summary: This study investigates the influence of pre-straining and heating on the mechanical performance of aluminum alloy 5182-O. It is found that pre-straining enhances the yield strength while heating weakens it. The test results at different strain-rates show a transition of strain rate sensitivity, with pre-straining enhancing the negative effect and heating mainly enhancing the positive effect.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2022)
Article
Nanoscience & Nanotechnology
Wendi Shi, Qi Yan, Jianghua Shen, Biao Chen, Yulong Li
Summary: This study investigates the impact of graphene nanosheets (GNSs) network reinforcement in Ti-6Al-4V composites on their mechanical response, microstructure evolution, and failure mechanism. The results show that GNSs significantly improve the strength of the composites and induce local dynamic recrystallization in the matrix. This study provides a quantitative assessment of the strengthening mechanism and mechanical properties of the composites.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Engineering, Mechanical
Mazharul Islam Lincon, Vijaya Chalivendra
Summary: An experimental study was conducted to investigate the damage sensing in high strain rate shear loading conditions of intra-ply glass/carbon hybrid composites. A unique four circumferential probe measuring technique was used to measure the electrical response during dynamic shear loading. The orientation of glass and carbon fibers significantly influenced the dynamic shear strength and piezo-resistance sensitivity.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2023)
Article
Chemistry, Physical
Y. Tan, Y. W. Wang, H. W. Cheng, X. W. Cheng
Summary: The fracture behavior of a Zr-based bulk metallic glass under different loading conditions was investigated, revealing the evolution of shear bands and voids and their impact on the fracture mode. The study showed the transition from shear banding to void coalescence under planar impact loading due to the increase in decohesion strength.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Engineering, Civil
Ngoc Thanh Tran, Duy Liem Nguyen, Quoc Anh Vu, Dong Joo Kim, Tri Thuong Ngo
Summary: This study investigated the shear response of ultra-high-performance fiber-reinforced concrete (UHPFRC) with different fiber types at both static and high strain rates. The results showed that UHPFRC exhibited shear strain hardening behavior and the shear response was strongly dependent on the fiber type.
Article
Engineering, Civil
Reem Abdul-Rahman, Dominique Saletti, Pascal Forquin
Summary: In this research, the static and dynamic shear strength of concrete was investigated using PTS tests, which apply axial load to generate shear stresses in the ligament of the sample. The results showed that shear strength is sensitive to water content and loading rate.
ENGINEERING STRUCTURES
(2021)
Article
Materials Science, Multidisciplinary
Wei Chen, Yuming Liu, Linli Gang, Libo Zhou, Wei Qiu, Yanjie Ren, Yan Niu, Jian Chen, Cong Li
Summary: The microstructure evolution of near p-Ti alloys with initially lamellar and equiaxed microstructures under dynamic loading was investigated. It was found that equiaxed microstructure is more prone to shear failure during high strain rate compression. Recrystallization and remelting of the lamellar a phase occurred in the adiabatic shear band (ASB) zone due to temperature rise and stress concentration, while the equiaxed a phase transformed into strip-shaped structure along the propagating direction of the adiabatic shear band. Twinning transfer between the p matrix and a phase was observed during high strain rate loading, indicating that twinning is the dominant deformation mode.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Mechanics
Bing Wang, Zhanqiang Liu, Haiming Zhang, Jinfu Zhao, Qinghua Song
Summary: This paper investigates the dynamic deformation and fracture mechanisms of Ti6Al4V over a wide strain rate range. A new rate-dependent material damage law is proposed, and the research shows the importance of developing appropriate damage evolution law to improve prediction accuracy of material deformation and guarantee structural design safety, especially for dynamic loading components.
ENGINEERING FRACTURE MECHANICS
(2022)
Article
Materials Science, Multidisciplinary
Lintao Li, Huiqing Fang, Dan Zhao, Xin Li, Tao Jin
Summary: The mechanical responses of TRIP590 AHSS at different loading rates under combined shear-tension condition were investigated. The sensitivity of strain concentration and fracture mechanism to loading rate were analyzed, and the changes in mechanical response of the material were discussed.
Article
Nanoscience & Nanotechnology
John P. Isaac, Seungjong Lee, Nima Shamsaei, Hareesh V. Tippur
Summary: The study on Scalmalloy (R) specimens reveals that horizontal and diagonal builds exhibit superior dynamic crack initiation and growth characteristics, while heat treatment has little impact on dynamic fracture performance. The analysis also shows significant strain-rate sensitivity in quasi-static crack initiation and growth of horizontal build specimens compared to their dynamic counterparts.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Chemistry, Physical
Menglei Hu, Kaikai Song, Weidong Song
Summary: The dynamic mechanical properties and fracture mechanisms of the AlCoCrFeNi2.1 eutectic high-entropy alloy fabricated by drop-casting and suction-assisted casting were investigated under different conditions. The suction-assisted casting alloy exhibited a stronger strain rate effect and better ductility compared to the drop-casting alloy, as revealed by experiments and microstructure analysis.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Nanoscience & Nanotechnology
Xutao Wang, Liang Wang, Tianxiang Li, Ke Jin, Benpeng Wang, Yunkai Li, Shihai Sun, Yunfei Xue
Summary: Strain softening upon dynamic loading is a roadblock for BCC structured HEAs, but in this study, precipitation of alpha 2 phase was applied to enhance strain hardening capability. The alpha 2 precipitates with BOR interface effectively reduce slip length and generate high density dislocations for hardening.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Engineering, Mechanical
Amin Ekhtiyari, Rene Alderliesten, Mahmood M. Shokrieh
Summary: The study investigated the loading rate dependency of mode I delamination growth in CFRPs, finding a clear decrease in propagation fracture toughness and average SERR at high loading rates. The reduced fracture resistance at elevated rates was physically explained in correlation with fiber bridging, fiber breakage, and matrix cleavage observed in fracture surfaces via scanning electron microscopy.
THEORETICAL AND APPLIED FRACTURE MECHANICS
(2021)
Article
Engineering, Mechanical
Sungbo Lee, Hoon Huh
Summary: This paper investigates the shear properties of AISI 4130 steel at various strain rates, finding that the shear properties of metallic materials are sensitive to strain rate. Through experimental and numerical methods, the hardening curves and shear fracture strains were successfully calibrated, revealing the changing patterns of hardening curves at ultra-high strain rates.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2021)
Article
Engineering, Manufacturing
Kaab Omer, Clifford Butcher, Michael Worswick
INTERNATIONAL JOURNAL OF MATERIAL FORMING
(2020)
Article
Engineering, Mechanical
Taamjeed Rahmaan, Jacqueline Noder, Armin Abedini, Ping Zhou, Cliff Butcher, Michael J. Worswick
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2020)
Article
Materials Science, Multidisciplinary
Pedram Samadian, Clifford Butcher, Michael J. Worswick
MATERIALS TODAY COMMUNICATIONS
(2020)
Article
Mechanics
Pedram Samadian, Lukas ten Kortenaar, Kaab Omer, Clifford Butcher, Michael J. Worswick
ENGINEERING FRACTURE MECHANICS
(2020)
Article
Engineering, Mechanical
Kaab Omer, Clifford Butcher, Michael Worswick
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2020)
Article
Materials Science, Composites
Khizar Rouf, Michael J. Worswick, John Montesano
Summary: This study evaluated the effects of manufacturing induced misalignment and crimp on heavy-tow non-crimp fabric composites, predicting properties using multiscale computational approaches. The real model showed excellent agreement with experimental data in predicting lamina stiffness, demonstrating the feasibility of accurately predicting mechanical properties by incorporating micro-structural defects.
JOURNAL OF COMPOSITE MATERIALS
(2021)
Article
Mechanics
Zohreh Asaee, John Montesano, Michael Worswick
Summary: In this study, a hot press co-moulding technique was used to fabricate hybrid metal/composite components, and it was found that placing the composite section on the side contacting the loading tup significantly increased the strength and absorbed energy of the beams.
COMPOSITE STRUCTURES
(2021)
Article
Materials Science, Multidisciplinary
M. J. Benoit, I. G. Ogunsanya, S. Winkler, M. J. Worswick, M. A. Wells, C. M. Hansson
Summary: The study evaluates the effects of sheet temper, forming conditions, and post-braze microstructure on the corrosion behavior of Al alloy heat exchangers. Different forming conditions lead to different corrosion behaviors in the fabricated heat exchanger samples, and no clear relationship between corrosion initiation sites and local microstructure was observed in the accelerated test. The results show that liquid film migration during brazing can cause localized corrosion and greater variability in polarization measurements.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2021)
Article
Engineering, Manufacturing
M. Shojaee, A. R. H. Midawi, B. Barber, H. Ghassemi-Armaki, M. Worswick, E. Biro
Summary: This study investigated the resistance spot weldability of third-generation advanced high strength steels 3G-980 and 3G-1180, developing weldability windows to determine acceptable welding zones for different welding times, and evaluating optimal weld strengths for different welding conditions. The study also analyzed the hardness changes in different weldment regions and the crack initiation and propagation paths of the interrupted lap-shear specimens for both steels.
JOURNAL OF MANUFACTURING PROCESSES
(2021)
Article
Mechanics
Pedram Samadian, Cameron O'Keeffe, Clifford Butcher, Michael J. Worswick
Summary: This study investigated the fracture behavior of hot-stamped tailor-welded blanks (TWBs) composed of different steel sheets through experiments and numerical simulations. Variation in fracture locations and initiation points were observed between weld fractures and parent metal fractures, and the impact of hardness on model predictions was discussed.
ENGINEERING FRACTURE MECHANICS
(2021)
Article
Materials Science, Multidisciplinary
A. Mohamadizadeh, E. Biro, M. Worswick
Summary: The novel testing and analysis techniques developed in this study allow for real-time observation of crack evolution and failure in spot welds, providing valuable insights into complex failure mechanisms. Through the use of DHW specimens and DIC analysis, interfacial and pull-out failure modes in spot welds were observed and quantified for the first time.
EXPERIMENTAL MECHANICS
(2021)
Article
Engineering, Industrial
J. Noder, R. George, C. Butcher, M. J. Worswick
Summary: The study examines the performance of lubricants and a PVD die coating in forming high strength aluminum alloys at elevated temperatures. It is found that the PVD die coating can mitigate lubricant breakdown, and Teflon(R) PTFE film is the most effective lubricant among those tested.
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Oleksii Sherepenko, Alireza Mohamadizadeh, Anastasiia Zvorykina, Michael Worswick, Elliot Biro, Sven Juttner
Summary: This study investigates the use of coated press-hardened steels in BiW components, highlighting challenges in welding and proposing solutions. Through experiments and numerical simulations, the mechanical performance and failure modes of spot welds were accurately predicted.
JOURNAL OF MATERIALS SCIENCE
(2021)
Proceedings Paper
Engineering, Mechanical
F. Steinlehner, M. Ott, D. Budnick, A. Weinschenk, S. Laumann, M. Worswick, W. Volk
INTERNATIONAL DEEP-DRAWING RESEARCH GROUP (IDDRG 2020)
(2020)
Article
Materials Science, Multidisciplinary
Pedram Samadian, Clifford Butcher, Michael J. Worswick
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2020)
Article
Engineering, Mechanical
A. P. Simonov, I. V. Sergeichev
Summary: The direct impact method provides a higher sample deformation rate and reliable results for materials with low yield strength and hardening rate. This study proposes an alternative procedure for calculating the strain rate in order to improve accuracy of the direct impact method for a wide range of metals and alloys. The proposed method has been validated through finite element analysis and direct impact tests, and it qualitatively changes the shape of the stress-strain curve by adding an unloading area.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2024)
Article
Engineering, Mechanical
Qiang Wei, Zifeng Li
Summary: This study investigates the dynamic bifurcation of a column when it impacts a rigid plane vertically, which is different from the classical Eulerian static buckling. The findings show that either the dimensionless critical buckling time or the dimensionless critical buckling velocity can be used to determine whether buckling has occurred. Different dimensionless initial defects in the column result in different dimensionless displacement responses, and the nonlinear effect influences the analysis results.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2024)
Article
Engineering, Mechanical
M. C. Price, M. J. Cole, K. H. Harriss, L. S. Alesbrook, M. J. Burchell, P. J. Wozniakiewicz
Summary: This article introduces a new gas gun developed at the Centre for Astrophysics and Planetary Science, University of Kent, which can produce vertical impacts at speeds up to 2 km/s. The gun design, assembly, operation, and ancillary components are described in detail. The experimental results demonstrate that the gun performs as expected.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2024)
Article
Engineering, Mechanical
Fanny Gant, Gabriel Seisson, Patrice Longere, Skander El Mai, Jean-Luc Zinszner
Summary: The article investigates the high strain rate response of metals and alloys under radial expansion and compares different materials. The results show that different materials exhibit different responses in terms of deformation and fracture.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2024)
Article
Engineering, Mechanical
M. D. Fitzgerald, J. D. Pecover, N. Petrinic, D. E. Eakins
Summary: This study investigates the mechanism for the destruction of thick flyers accelerated using electric guns and proposes strategies for mitigating their break-up based on experimental results and mathematical models. The findings suggest that limiting the maximum pressure within the flyer and extending the current rise time can prevent flyer failure, increasing the efficiency and shock duration of the electric gun.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2024)
Article
Engineering, Mechanical
Guowen Gao, Enling Tang, Guolai Yang, Yafei Han, Mengzhou Chang, Kai Guo, Liping He
Summary: In this study, the dynamic constitutive model of Al/Ep/W material was investigated and verified through experiments and numerical simulations. The proposed model accurately described the mechanical behavior of the material under high strain rates, providing an important reference for evaluating the response characteristics of the new energetic material projectile to lightweight aluminum armor.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2024)
Article
Engineering, Mechanical
Minzu Liang, Meng Zhou, Xiangyu Li, Yuliang Lin, Fangyun Lu
Summary: UHMWPE fiber mesh reinforced polyurea composites improve structural strength and blast resistance performance, and can alter the failure mode. Loose filler is generated as polyurea melts and fragments penetrate. Joint loads are classified into three categories based on their connection and duration.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2024)
Article
Engineering, Mechanical
Ashutosh Jha, Guglielmo Cimolai, Iman Dayyani
Summary: The present article introduces the Zero Poisson's Ratio Fish Cells metamaterial and investigates the effects of Poisson's ratio on the crashworthiness of different lattice structures. Numerical results demonstrate that the Zero Poisson's Ratio model possesses greater stability and structural integrity with minimal edge deformations.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2024)
Article
Engineering, Mechanical
Hongbo Zhang, Dayong Hu, Xubin Ye, Xin Chen, Yuhuai He
Summary: This study investigated the impact of spherical foreign objects on simulated blade edges through experimental and theoretical analysis. The experimental results showed that increasing impact energy resulted in larger damage sizes, and three distinct types of deformations were observed in FOD. Accurate FOD prediction models were developed using linear and power formulas. The theoretical analysis using a spring-mass system based on Winkler's elastic-plastic foundation theory yielded results in good agreement with experimental measurements, providing a reference for fatigue life assessment of aeroengine blades.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2024)
Article
Engineering, Mechanical
L. M. Reitter, Y. A. Malik, A. B. Jahn, I. V. Roisman, J. Hussong
Summary: This study characterizes the dynamic strength of wet granular ice layers through impact tests. The results reveal strong connections between ice particles in ice layers generated by ice crystal accretion. Comparable strength values can be obtained by reinforcing ice particle connections in ice layers prepared in the laboratory.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2024)
Article
Engineering, Mechanical
Kyle Mao, Genevieve Toussaint, Alexandra Komrakova, James D. Hogan
Summary: In this study, the Generalized Incremental Stress State dependent damage MOdel (GISSMO) is used to simulate the high-velocity impact failure of Armox 500T steel. The GISSMO is calibrated and validated using experimental data from the literature, and is then applied to investigate the impact failure behaviors of bi-layered steel systems. The results provide new capabilities and insights for the design of armor structures and evaluation of impact failure behaviors in Armox 500T/RHA bi-layered systems.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2024)
Article
Engineering, Mechanical
Asim Onder
Summary: This paper investigates the performance of bumper plates with wavy surfaces under hypervelocity impact and finds that they are more effective in decreasing the impact energy compared to flat plates. The study also reveals the distinctive debris cloud generation that has never been reported before.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2024)
Article
Engineering, Mechanical
Zhi-Yong Yin, Xiao-wei Chen
Summary: This study numerically reveals three typical fracture modes of explosively-driven metal shells and investigates the influencing factors of different fracture modes through experimental data and dimensional analysis.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2024)
Article
Engineering, Mechanical
Jiri Pachman, David J. Chapman, Marek Foglar, Martin Kunzel, William G. Proud
Summary: Through the study of different types of concrete, it was found that despite their compositional complexity, range of compressive strengths, and reinforcement methods, the average Hugoniot data were remarkably similar between different concrete types.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2024)
Article
Engineering, Mechanical
Konstantin Kappe, Klaus Hoschke, Werner Riedel, Stefan Hiermaier
Summary: This paper presents a multi-objective optimization procedure for effectively designing gradient lattice structures under dynamic loading. The aim is to maximize energy absorption characteristics and achieve a lightweight design. Through considering design variables such as the relative density and density gradient, the peak crushing force reduction and maximized specific energy absorption are simultaneously optimized. A simplified beam-based finite element model is used to efficiently model and simulate the lattice structures. An artificial neural network is trained to predict energy absorbing characteristics and find optimal lattice structure configurations. The network is trained using a multi response adaptive sampling algorithm, allowing parallel simulation with automatically generated finite element models. A multi-objective genetic algorithm is then used to find optimal combinations of design parameters for lattice structures under different impact velocities and cell topologies.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2024)