Article
Engineering, Mechanical
Meizhen Xiang, Songqing Jiang, Junzhi Cui, Yun Xu, Jun Chen
Summary: Researchers developed a continuum model of micro-spalling by coupling hydroelastic-plastic-damage mechanics and high-pressure melting kinetics, successfully simulating plate impact spalling experiments on aluminum while considering both damage and melting effects in the fracture process.
INTERNATIONAL JOURNAL OF PLASTICITY
(2021)
Article
Nanoscience & Nanotechnology
Xiangbo Ji, Wenzhi Qin, Xuannan Wu, Yao Wang, Fuhua Gao, Liang Wang, Yidong Hou
Summary: This study demonstrates a high-performance Laser Driven Flyer (LDF) by using a perfect metamaterial absorber (PMA) to improve the energy utilization efficiency of light. The designed Ag nanopillar array in anodic aluminum oxide templates greatly reduces the reflectivity of the flyer, resulting in an increased final speed of the flyer generated in the PMA-enhanced LDF approach.
Article
Automation & Control Systems
Xianlong Li, Laiqi Zhang, Xu Wei
Summary: This study systematically investigated the effect of laser shock peening (LSP) on residual stress in selective laser melting (SLM) by establishing a removable LSP impact model. The results showed that LSP can transfer residual tensile stress to compressive stress in SLM. The peak pressure of LSP and the overlap were the most crucial factors determining the residual stress field, while the LSP diameter and FWHM had less prominent effects.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2023)
Article
Acoustics
Darja Horvat, Vid Agrez, Tomaz Pozar, Bojan Starman, Miroslav Halilovic, Rok Petkovsek
Summary: This study investigated the generation of secondary cavitation following laser-induced breakdown in spherical media. Through numerical simulation and experimental comparison, it was found that significant transient negative pressure and pre-illumination by breakdown-generating laser pulses played important roles in the generation of secondary cavitation.
ULTRASONICS SONOCHEMISTRY
(2022)
Article
Physics, Multidisciplinary
Deshen Geng, Danyang Liu, Jianying Lu, Chao Chen, Junying Wu, Shuzhou Li, Lang Chen
Summary: High-power pulsed lasers are used to launch metal foils and generate high-speed flyers for material science and aerospace engineering. This study investigated the process of laser-driven aluminum flyers using molecular dynamics and the two-temperature model. The results showed that high laser fluence induced a shock wave with a peak pressure higher than 25 GPa, leading to the expansion of shear bands and the formation of high-speed flyers. In addition, aluminum crystal phase transformation was observed during the process. The findings contribute to a better understanding of the laser-induced shock effect and the development of laser-driven flyers.
Article
Optics
K. Jakubowska, D. Mancelli, R. Benocci, J. Trela, I. Errea, A. S. Martynenko, P. Neumayer, O. Rosmej, B. Borm, A. Molineri, C. Verona, D. Cannata, A. Aliverdiev, H. E. Roman, D. Batani
Summary: Experimental results on diamond behavior under megabar pressure were obtained, with measurements of shock wave velocity and reflecting state compared with hydrodynamical simulations.
HIGH POWER LASER SCIENCE AND ENGINEERING
(2021)
Article
Optics
Hufeng Liu, Biyi Wang, Xinxiang Miao, Man Xu, Xinyi Liu, Fawang Zhang, Tao Lu, Rong Qiu, Decheng Guo, Qiang Zhou, Yong Jiang
Summary: The behavior of morphology and crack propagation during damage growth on the rear surface of fused silica is studied. The mechanism and distribution characteristics of the plasma caused by energy deposition during the damage growth process and the effect on crack extension are investigated. The properties of shock and stress waves and their effects on the damage growth are also discussed.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Optics
J. Radhakrishnan, M. Diaz, F. Cordovilla, J. Kopecek, Jose L. Ocana
Summary: A superhydrophobic TiN surface was generated through laser patterning and low-pressure technique, and the impact dynamics and fragmentation of water droplets on this surface were studied. The surface morphology and wetting property influenced the spreading and recoiling processes of droplets, leading to the formation of fingers during impact and fragmentation during retraction. The resulting fragmentation reduced the travel distance and time required for recoiling, and was attributed to modified hydrodynamics induced by the surface morphology and wetting property. Laser-processed hierarchical surface structures show potential in reducing contact time at the solid-liquid interface.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Optics
Evgenii Mareev, Nikita Minaev, Vyacheslav Zhigarkov, Vladimir Yusupov
Summary: Laser bioprinting with gel microdroplets containing living cells is a promising method for applications in microbiology, biotechnology, and medicine. Laser engineering of microbial systems (LEMS) using laser-induced forward transfer (LIFT) is highly effective in isolating hard-to-cultivate and uncultured microorganisms. The study of various factors influencing the transfer process is crucial for improving laser printing technology and understanding the mechanisms of LEMS action.
Article
Chemistry, Physical
Jihun Noh, Qingshun Bai, Rongqi Shen, Dongsik Kim
Summary: The study proposed a method of mechanically sintering silver nanoparticles on heat-sensitive polymer substrates using laser-induced shock waves, and experimentally analyzed the physical mechanisms and properties of the sintered coating. The method showed better sintering performance in terms of density and electrical conductivity of the sintered films compared to typical methods.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Enrico Di Russo, Francesco Sgarbossa, Pierpaolo Ranieri, Gianluigi Maggioni, Samba Ndiaye, Sebastien Duguay, Francois Vurpillot, Lorenzo Rigutti, Jean-Luc Rouviere, Vittorio Morandi, Davide De Salvador, Enrico Napolitani
Summary: Researchers have developed a new method for fabricating fully relaxed Ge1-ySny layers on Ge substrates with Sn concentrations up to 13 at. %. By sputtering thin Sn films directly onto Ge wafers followed by pulsed laser melting, Sn was successfully incorporated into Ge. Microstructural analyses revealed that below 6 at. % Sn concentration, the Ge1-ySny layers were fully substitutional and strained, with few defects. For Sn concentrations above 6 at. %, Sn-rich regions were observed around dislocations. However, outside these regions, the Ge1-ySny layers displayed a homogeneous Sn distribution, full substitutionality, strain relaxation, and excellent crystal quality. This new approach offers a promising alternative to epitaxy and ion implantation for high-quality Ge1-ySny alloy fabrication, with the added benefit of spatially confined thermal processes using pulsed laser melting.
APPLIED SURFACE SCIENCE
(2023)
Article
Optics
Y. L. Zhao, H. L. Yin, J. C. Shi, S. N. Luo
Summary: Nanosecond time-resolved schlieren imaging was used to study laser-induced breakdown in ni-tromethane, nitroethane and 1-nitropropane, as well as the dynamics of associated shock waves and cavitation bubbles. The increase in shock wave velocity is due to exothermic reactions during decomposition and chemical reactions in the vapor plume behind the shock front. Correlations between oxygen balance and shock wave velocity, bubble radius, lifetime and bubble energy are established. For example, shock wave velocity is proportional to the negative inverse of oxygen balance. Additionally, the bubble energy of nitroethane saturates at high pulse energy.
OPTICS AND LASERS IN ENGINEERING
(2023)
Article
Optics
Koutayba Alnama, Nawar Sulaiman, Ihab Ibrahim
Summary: The spatio-temporal evolution of a Nd:YAG laser induced shock wave generated from a copper target under various pump laser power densities at atmospheric pressure was investigated. The results indicated that a power model considering the background pressure effect was suitable to fit the experimental data, and that the effect of laser power density on shock wave velocity was clearer near the target surface. Additionally, a cooling wave with an estimated velocity of 30 m/s was also detected.
Article
Spectroscopy
Hantian Zhang, Hao Sun, Yi Wu, Qianhong Zhou
Summary: This study focuses on the influence of gas pressure on the dynamic characteristics of laser-induced plasma, revealing that higher gas pressure leads to greater electron number density and electron temperature within the central of LIP and a faster decay rate. A torus structure in LIPs is generated during the later stage of plasma decay, significantly affecting the distribution of electron number density, electron temperature, and the intensity of plasma emission.
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
(2021)
Article
Acoustics
Haigang Wen, Zhifeng Yao, Qiang Zhong, Ye Tian, Yurong Sun, Fujun Wang
Summary: In this study, highly spherical cavitation bubbles were generated using nanosecond laser pulses, and the evolution and energy partitioning of the bubbles were investigated. The results showed that the ratio of shock wave energy to bubble energy varied at different stages, providing important insights into the formation mechanism of shock waves.
ULTRASONICS SONOCHEMISTRY
(2023)
Article
Physics, Applied
T. de Resseguier, G. Prudhomme, C. Roland, E. Brambrink, D. Loison, B. Jodar, E. Lescoute, A. Sollier
JOURNAL OF APPLIED PHYSICS
(2018)
Article
Nanoscience & Nanotechnology
M. Laurencon, T. de Resseguier, D. Loison, J. Baillargeat, J. N. Domfang Ngnekou, Y. Nadot
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2019)
Article
Materials Science, Multidisciplinary
N. Amadou, T. De Resseguier, A. Dragon, E. Brambrink
COMPUTATIONAL MATERIALS SCIENCE
(2020)
Article
Physics, Applied
G. Prudhomme, T. de Resseguier, C. Roland, A. Sollier, E. Lescoute, D. Loison, E. Brambrink
JOURNAL OF APPLIED PHYSICS
(2020)
Article
Engineering, Chemical
T. de Resseguier, X. Milhet, V Labussiere, E. Barraud, L. Signor, J. Baillargeat
Summary: The adhesion of thin silver joints sintered on metallic substrates is a major issue for potential use in power electronics modules. Laser shock-induced spallation provides a method to study this adhesion, and experiments show that aging affects interface strength.
JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY
(2022)
Article
Physics, Applied
P. Pradel, T. de Resseguier, F. Malaise, M. P. Olbinado, A. Rack, J. Grenzer, D. Loison, L. Berthe
Summary: This study conducted laser-driven shock experiments coupled with in situ x-ray imaging to investigate the dynamic response of polyurethane foam. The results showed permanent deformation of the foam and revealed heavy damage in the vicinity of the loaded zone.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Physics, Applied
E. Barraud, T. de Resseguier, J. Baillargeat, S. Hemery, J. Cormier
Summary: In this study, the dynamic behavior of a nickel-based superalloy under shock loading was investigated using laser-launched flyers. It was found that different microstructures and heat treatment conditions significantly influence the dynamic failure mechanisms.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Geochemistry & Geophysics
A. -M. Seydoux-Guillaume, T. Deresseguier, G. Montagnac, S. Reynaud, H. Leroux, B. Reynard, A. J. Cavosie
Summary: Analysis of impact-related damage in minerals and rocks, such as monazite, can provide important evidence for identifying impact structures. This study conducted a laser-driven shock experiment on a natural monazite crystal and compared the resulting shock-deformation microstructures with those observed in naturally shocked monazite. The experiment successfully produced deformation microstructures similar to those found in natural samples, demonstrating the potential for precise dating and determination of pressure-temperature conditions for impact events.
EARTH AND PLANETARY SCIENCE LETTERS
(2022)
Article
Crystallography
Nourou Amadou, Abdoul Razak Ayouba Abdoulaye, Thibaut De Resseguier, Andre Dragon
Summary: Non-equilibrium molecular dynamics simulations were used to investigate the strain-rate dependence of plasticity and phase transition in [001]-oriented single-crystal iron under ramp compression. Plasticity is governed by deformation twinning, where the kinetics is closely related to the loading rate. A hardening-like effect shifts the onset of the bcc-to-hcp phase transition to a high stress during the ramp compression regime. However, in shock wave conditions, the bcc-hcp transition is triggered when the strain rate associated with plastic deformation reaches a critical value, resulting in a constitutive functional dependence of the transition onset stress on the plastic deformation rate, consistent with experimental data under laser compression.
Editorial Material
Physics, Applied
Federica Coppari, Thibaut de Resseguier, Sergey Razorenov, Toshimori Sekine, Eugene Zaretsky
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Physics, Condensed Matter
N. Amadou, T. de Resseguier, A. Dragon
Summary: Using Molecular Dynamics computations, a shear stiffening effect was found in defect-free iron single crystals, shifting the structural phase transition to higher pressure levels. Plasticity in iron samples under compression was studied, revealing an interplay between grain size, point defects, and phase transition behavior influenced by defect density. In polycrystalline iron, the transition to phase transition at lower pressures is attributed to complex interactions between intra-grain twinning and dislocation activities.
COMPUTATIONAL CONDENSED MATTER
(2021)
Proceedings Paper
Materials Science, Multidisciplinary
T. de Resseguier, G. Prudhomme, C. Roland, A. Sollier, E. Lescoute, D. Loison, E. Brambrink
SHOCK COMPRESSION OF CONDENSED MATTER - 2019
(2020)
Proceedings Paper
Materials Science, Multidisciplinary
M. Laurencon, T. de Resseguier, D. Loison, J. Baillargeat
SHOCK COMPRESSION OF CONDENSED MATTER - 2019
(2020)
Proceedings Paper
Physics, Condensed Matter
P. Pradel, F. Malaise, T. de Resseguier, C. Delhomme, B. Cadilhon, J. H. Quessada, G. Le Blanc
SHOCK COMPRESSION OF CONDENSED MATTER - 2017
(2018)
Proceedings Paper
Physics, Condensed Matter
G. Prudhomme, J-E. Franzkowiak, T. de Resseguier, E. Brambrink, C. Roland, D. Loison, E. Lescoute, A. Sollier
SHOCK COMPRESSION OF CONDENSED MATTER - 2017
(2018)
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)