工业工程最新文献_第2页

A fast-running engineering tool for assessing structural vulnerability to blast loading

IF 5

Defence Technology(防务技术) Pub Date : 2025-04-01 DOI: 10.1016/j.dt.2024.12.009

Carlo Crispino, Salvatore Annunziata, Alberto Contini, Luca Lomazzi, Andrea Manes

{"title":"A fast-running engineering tool for assessing structural vulnerability to blast loading","authors":"Carlo Crispino, Salvatore Annunziata, Alberto Contini, Luca Lomazzi, Andrea Manes","doi":"10.1016/j.dt.2024.12.009","DOIUrl":"10.1016/j.dt.2024.12.009","url":null,"abstract":"<div><div>Assessing the vulnerability of a platform is crucial in its design. In fact, the results obtained from vulnerability analyses provide valuable information, leading to precise design choices or corrective solutions that enhance the platform's chances of surviving different scenarios. Such scenarios can involve various types of threats that can affect the platform's survivability. Among such, blast waves impacting the platform's structure represent critical conditions that have not yet been studied in detail. That is, frameworks for vulnerability assessment that can deal with blast loading have not been presented yet. In this context, this work presents a fast-running engineering tool that can quantify the risk that a structure fails when it is subjected to blast loading from the detonation of high explosive-driven threats detonating at various distances from the structure itself. The tool has been implemented in an in-house software that calculates vulnerability to various impacting objects, and its capabilities have been shown through a simplified, yet realistic, case study. The novelty of this research lies in the development of an integrated computational environment capable of calculating the platform's vulnerability to blast waves, without the need for running expensive finite element simulations. In fact, the proposed tool is fully based on analytical models integrated with a probabilistic approach for vulnerability calculation.</div></div>","PeriodicalId":58209,"journal":{"name":"Defence Technology(防务技术)","volume":"46 ","pages":"Pages 244-254"},"PeriodicalIF":5.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143829806","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Interface geometry modification to trap plasticized flash for improved joint strength of dissimilar rotary friction welds

IF 5

Defence Technology(防务技术) Pub Date : 2025-04-01 DOI: 10.1016/j.dt.2024.12.010

Neeraj Kumar Mishra , S.G.K. Manikandan , Suresh Meshram , Amber Shrivastava

{"title":"Interface geometry modification to trap plasticized flash for improved joint strength of dissimilar rotary friction welds","authors":"Neeraj Kumar Mishra , S.G.K. Manikandan , Suresh Meshram , Amber Shrivastava","doi":"10.1016/j.dt.2024.12.010","DOIUrl":"10.1016/j.dt.2024.12.010","url":null,"abstract":"<div><div>Rotary friction welding is a highly effective solid-state technique for joining dissimilar materials, which offers the potential for significant weight reduction without compromising strength. Traditionally, during rotary friction welding, the severely deformed material, or flash, is expelled from the interface and machined away to achieve the desired joint geometry. However, this work introduces a novel approach: trapping the flash within the joint to improve joint properties. The study investigates two different interface geometry combinations—flat-flat and flat-taper interfaces. Previous research shows that Ni interlayer between steel and titanium can enhance the joint strength. This study builds on the existing knowledge (effect of Ni interlayer) by examining the influence of interface geometry to further improve the dissimilar joint performance. The experimental results, including tensile testing and microstructural characterization, highlight the superior performance of the flat-taper interface. The modified geometry minimizes flash loss, providing a cavity that retains both the flash and the Ni interlayer within the joint. This retention promotes dynamic recrystallization, resulting in refined grain structures near the interface. Moreover, the trapped Ni interlayer effectively prevents the formation of brittle Fe-Ti intermetallic compounds at the dissimilar material interface. The findings reveal that the flat-taper interface improved joint strength by an impressive 105% compared to the flat-flat interface. This innovative geometry modification demonstrates the potential to enhance mechanical properties of dissimilar joints through better flash and interlayer management.</div></div>","PeriodicalId":58209,"journal":{"name":"Defence Technology(防务技术)","volume":"46 ","pages":"Pages 71-78"},"PeriodicalIF":5.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143829989","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

3D printed hybrid rocket fuels with μAl core-shell particles coated with polyvinylidene fluoride and polydopamine: Enhanced combustion characteristics

IF 5

Defence Technology(防务技术) Pub Date : 2025-04-01 DOI: 10.1016/j.dt.2024.12.002

Qihang Chen , Xiaolong Fu , Weitao Yang , Suhang Chen , Zhiming Guo , Rui Hu , Huijie Zhang , Lianpeng Cui , Xu Xia

{"title":"3D printed hybrid rocket fuels with μAl core-shell particles coated with polyvinylidene fluoride and polydopamine: Enhanced combustion characteristics","authors":"Qihang Chen , Xiaolong Fu , Weitao Yang , Suhang Chen , Zhiming Guo , Rui Hu , Huijie Zhang , Lianpeng Cui , Xu Xia","doi":"10.1016/j.dt.2024.12.002","DOIUrl":"10.1016/j.dt.2024.12.002","url":null,"abstract":"<div><div>3D printing technology enhances the combustion characteristics of hybrid rocket fuels by enabling complex geometries. However, improvements in regression rates and energy properties of monotonous 3D printed fuels have been limited. This study explores the impact of poly (vinylidene fluoride) and polydopamine-coated aluminum particles on the thermal and combustion properties of 3D printed hybrid rocket fuels. Physical self-assembly and anti-solvent methods were employed for constructing composite μAl particles. Characterization using SEM, XRD, XPS, FTIR, and μCT revealed a core-shell structure and homogeneous elemental distribution. Thermal analysis showed that PVDF coatings significantly increased the heat of combustion for aluminum particles, with maximum enhancement observed in μAl@PDA@PVDF (denoted as μAl@PF) at 6.20 kJ/g. Subsequently, 3D printed fuels with varying pure and composite μAl particle contents were prepared using 3D printing. Combustion tests indicated higher regression rates for Al@PF/Resin composites compared to pure resin, positively correlating with particle content. The fluorocarbon-alumina reaction during the combustion stage intensified Al particle combustion, reducing residue size. A comprehensive model based on experiments provides insights into the combustion process of PDA and PVDF-coated droplets. This study advances the design of 3D-printed hybrid rocket fuels, offering strategies to improve regression rates and energy release, crucial for enhancing solid fuel performance for hybrid propulsion.</div></div>","PeriodicalId":58209,"journal":{"name":"Defence Technology(防务技术)","volume":"46 ","pages":"Pages 59-70"},"PeriodicalIF":5.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143829974","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental and numerical study on attenuation of shock waves in ventilation pipes

IF 5

Defence Technology(防务技术) Pub Date : 2025-04-01 DOI: 10.1016/j.dt.2024.12.006

Wenjun Yu , Shuxin Deng , Shengyun Chen , Bingbing Yu , Dongyan Jin , Zhangjun Wu , Yaguang Sui , Huajie Wu

{"title":"Experimental and numerical study on attenuation of shock waves in ventilation pipes","authors":"Wenjun Yu , Shuxin Deng , Shengyun Chen , Bingbing Yu , Dongyan Jin , Zhangjun Wu , Yaguang Sui , Huajie Wu","doi":"10.1016/j.dt.2024.12.006","DOIUrl":"10.1016/j.dt.2024.12.006","url":null,"abstract":"<div><div>With different structural forms of ventilation pipes have various attenuation effects on incident shock waves while meeting ventilation requirements. The attenuation mechanism and the propagation law of shock waves in ventilation pipes of different structures are investigated by experiments and numerical simulations. Furthermore, for the same structure, the effects of peak pressure and positive pressure time on the attenuation rate are discussed. It is found that the attenuation rate increases with the incident shock wave pressure, and the shock wave attenuation rate tends to reach its limiting value <em>k</em> for the same structure and reasonably short positive pressure time. Under the same conditions, the attenuation rate is calculated using the pressure of the shock wave as follows: diffusion chamber pipe, branch pipe and self-consumption pipe; the attenuation rate per unit volume is calculated as follows: self-consumption pipe, branch pipe and diffusion chamber pipe. In addition, an easy method is provided to calculate the attenuation rate of the shock wave in single and multi-stage ventilation pipes. Corresponding parameters are provided for various structures, and the margin of error between the formulae and experimental results is within 10%, which is significant for engineering applications.</div></div>","PeriodicalId":58209,"journal":{"name":"Defence Technology(防务技术)","volume":"46 ","pages":"Pages 156-168"},"PeriodicalIF":5.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143829803","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Three-dimensional finite-time optimal cooperative guidance with integrated information fusion observer 带有综合信息融合观测器的三维有限时间优化协同制导

IF 5

Defence Technology(防务技术) Pub Date : 2025-04-01 DOI: 10.1016/j.dt.2024.12.022

Yiao Zhan, Linwei Wang, Di Zhou

{"title":"Three-dimensional finite-time optimal cooperative guidance with integrated information fusion observer","authors":"Yiao Zhan, Linwei Wang, Di Zhou","doi":"10.1016/j.dt.2024.12.022","DOIUrl":"10.1016/j.dt.2024.12.022","url":null,"abstract":"<div><div>Intercepting high-maneuverability hypersonic targets in near-space environments poses significant challenges due to their extreme speeds and evasive capabilities. To address these challenges, this study presents an integrated approach that combines a Three-Dimensional Finite-Time Optimal Cooperative Guidance Law (FTOC) with an Information Fusion Anti-saturation Predefined-time Observer (IFAPO). The proposed FTOC guidance law employs a nonlinear, non-quadratic finite-time optimal control strategy designed for rapid convergence within the limited timeframes of near-space interceptions, avoiding the need for remaining flight time estimation or linear decoupling inherent in traditional methods. To complement the guidance strategy, the IFAPO leverages multi-source information fusion theory and incorporates anti-saturation mechanisms to enhance target maneuver estimation. This method ensures accurate and real-time prediction of target acceleration while maintaining predefined convergence performance, even under complex interception conditions. By integrating the FTOC guidance law and IFAPO, the approach optimizes cooperative missile positioning, improves interception success rates, and minimizes fuel consumption, addressing practical constraints in military applications. Simulation results and comparative analyses confirm the effectiveness of the integrated approach, demonstrating its capability to achieve cooperative interception of highly maneuvering targets with enhanced efficiency and reduced economic costs, aligning with realistic combat scenarios.</div></div>","PeriodicalId":58209,"journal":{"name":"Defence Technology(防务技术)","volume":"46 ","pages":"Pages 12-28"},"PeriodicalIF":5.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143829971","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Toughening modification of cellulose acetate butyrate and using for CL-20-based polymer bonded explosives

IF 5

Defence Technology(防务技术) Pub Date : 2025-04-01 DOI: 10.1016/j.dt.2024.09.004

Na Li , Zhengzheng Zhang , Fengqin Shang , Shaohua Jin , Lijie Li , Changgen Feng , Jiaming Gao , Yu Chen

{"title":"Toughening modification of cellulose acetate butyrate and using for CL-20-based polymer bonded explosives","authors":"Na Li , Zhengzheng Zhang , Fengqin Shang , Shaohua Jin , Lijie Li , Changgen Feng , Jiaming Gao , Yu Chen","doi":"10.1016/j.dt.2024.09.004","DOIUrl":"10.1016/j.dt.2024.09.004","url":null,"abstract":"<div><div>CAB is a binder commonly utilized in CL-20-based mixed explosives. Based on the requirements of CL-20-based polymer bonded explosives in formability, safety, and detonation energy, we explored a high-toughness and low dosage CAB binder system. CAB was subjected to different toughening modifications and the effects of the modified CAB binders on the bonding and coating of CL-20 crystals, as well as the formability, safety, and mechanical properties of CL-20-based polymer bonded explosive molding powder (MP) were evaluated. The changes in glass transition temperature (<em>T</em><sub>g</sub>) and mechanical properties of the modified binders were investigated using the molecular dynamics simulation at first. A series of modified binders with different molecular weights were then synthesized and characterized by FTIR, <sup>1</sup>H NMR, <sup>13</sup>C NMR and SEC. The <em>T</em><sub>g</sub> and cross-sectional morphologies of the binder membranes were determined by DSC and SEM. The tensile properties of the binder membranes with different molecular weights and their mixtures with the plasticizer were evaluated at different temperature. With the optimized modified binder, CL-20/CAB and CL-20/CAB-<em>g</em>-PCL-3 MPs with the same plasticizer ratio and Cl-20/CAB-<em>g</em>-PCL-3 MP with a lower plasticizer ratio and higher CL-20 content were prepared and evaluated for the bonding and coating effects, crystal form, mechanical sensitivity and specific heat capacity (<em>C</em><sub>p</sub>) by SEM, XRD, sensitivity testing and DSC, respectively. Their compressive strengths and splitting tensile strengths were measured at different temperature using a universal testing machine. Our work has provided a high-toughness and low-dosage binder system for CL-20-based MPs and offers a novel strategy to improve the formability, safety, and energy of CL-20 based polymer bonded explosives.</div></div>","PeriodicalId":58209,"journal":{"name":"Defence Technology(防务技术)","volume":"46 ","pages":"Pages 29-39"},"PeriodicalIF":5.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143829973","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Review on integral stiffened panel of aircraft fuselage structure

IF 5

Defence Technology(防务技术) Pub Date : 2025-04-01 DOI: 10.1016/j.dt.2024.11.005

Devi Chandra , Y. Nukman , Muhammad Adlan Azka , S.M. Sapuan , J. Yusuf

{"title":"Review on integral stiffened panel of aircraft fuselage structure","authors":"Devi Chandra , Y. Nukman , Muhammad Adlan Azka , S.M. Sapuan , J. Yusuf","doi":"10.1016/j.dt.2024.11.005","DOIUrl":"10.1016/j.dt.2024.11.005","url":null,"abstract":"<div><div>The increasing demand to decrease manufacturing costs and weight reduction is driving the aircraft industry to change the use of conventional riveted stiffened panels to integral stiffened panels (ISP) for aircraft fuselage structures. ISP is a relatively new structure in aircraft industries and is considered the most significant development in a decade. These structures have the potential to replace the conventional stiffened panel due to the emergence of manufacturing technology, including welding, high-speed machining (HSM), extruding, and bonding. Although laser beam welding (LBW) and friction stir welding (FSW) have been applied in aircraft companies, many investigations into ISP continue to be conducted. In this review article, the current state of understanding and advancement of ISP structure is addressed. A particular explanation has been given to (a) buckling performance, (b) fatigue performance of the ISP, (c) modeling and simulation aspects, and (d) the impact of manufacturing decisions in welding processes on the final structural behavior of the ISP during service. Compared to riveted panels, machined ISP had a better compressive buckling load, and FSW integral panels had a lower buckling load than riveted panels. Compressive residual stress decreased the stress intensity factor (SIF) rates, slowing down the growth of fatigue cracks as occurred in FSW and LBW ISP.</div></div>","PeriodicalId":58209,"journal":{"name":"Defence Technology(防务技术)","volume":"46 ","pages":"Pages 1-11"},"PeriodicalIF":5.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143830382","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A novel approach for analyzing the migration behavior of fatliquors within leather

Journal of Leather Science and Engineering Pub Date : 2025-04-01 DOI: 10.1186/s42825-025-00189-7

Ruibin Li, Chen Yang, Yuanqing Liu, Yue Yu

{"title":"A novel approach for analyzing the migration behavior of fatliquors within leather","authors":"Ruibin Li, Chen Yang, Yuanqing Liu, Yue Yu","doi":"10.1186/s42825-025-00189-7","DOIUrl":"10.1186/s42825-025-00189-7","url":null,"abstract":"<div><p>Fatliquor migration within the leather matrix may lead to the formation of fatty spew, oil patches and fogging, posing challenges to the production of high-quality leather. Currently, it lacks a straightforward and effective method for analyzing fatliquor migration behavior. This investigation introduces a novel approach for analyzing fatliquor migration by measuring its spreading area on collagen fiber membranes. By applying 300 mg of fatliquor onto 0.5 mm square membranes (10 cm × 10 cm), distinct oil spots were observed, enabling analysis of migration behavior. Using stearic acid as a standard reference compound effectively minimized the influence of different leather sections on fatliquor migration. Fatliquors with low molecular weight, low melting point and high aliphatic ester content exhibited obvious migration potential. Organic-tanned leathers and sulfated fatliquors displayed weak interactions, resulting in easy fatliquor migration within the leather. Conversely, metal-tanned leathers and phosphorylated fatliquors demonstrated strong interactions, effectively hindering migration. This research provides valuable practical and theoretical insights for developing effective strategies to prevent and control fatliquor migration in leather production.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":640,"journal":{"name":"Journal of Leather Science and Engineering","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://JLSE.SpringerOpen.com/counter/pdf/10.1186/s42825-025-00189-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143740849","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Numerical investigation on the engraving process of a pyrotechnic actuator with an improved two-phase flow model of interior ballistic

IF 5

Defence Technology(防务技术) Pub Date : 2025-04-01 DOI: 10.1016/j.dt.2024.11.004

Yue Li , Cong Liu , Cheng Cheng , Genghui Jiang

{"title":"Numerical investigation on the engraving process of a pyrotechnic actuator with an improved two-phase flow model of interior ballistic","authors":"Yue Li , Cong Liu , Cheng Cheng , Genghui Jiang","doi":"10.1016/j.dt.2024.11.004","DOIUrl":"10.1016/j.dt.2024.11.004","url":null,"abstract":"<div><div>By combining with an improved model on engraving process, a two-phase flow interior ballistic model has been proposed to accurately predict the flow and energy conversion behaviors of pyrotechnic actuators. Using computational fluid dynamics (CFD), the two-phase flow and piston engraving characteristics of a pyrotechnic actuator are investigated. Initially, the current model was utilized to examine the intricate, multi-dimensional flow, and energy conversion characteristics of the propellant grains and combustion gas within the pyrotechnic actuator chamber. It was discovered that the combustion gas on the wall's constant transition from potential to kinetic energy, along with the combined effect of the propellant motion, are what create the pressure oscillation within the chamber. Additionally, a numerical analysis was conducted to determine the impact of various parameters on the pressure oscillation and piston motion, including pyrotechnic charge, pyrotechnic particle size, and chamber structural dimension. The findings show that decreasing the pyrotechnic charge will lower the terminal velocity, while increasing and decreasing the pyrotechnic particle size will reduce the pressure oscillation in the chamber. The pyrotechnic particle size has minimal bearing on the terminal velocity. The results of this investigation offer a trustworthy forecasting instrument for comprehending and creating pyrotechnic actuator designs.</div></div>","PeriodicalId":58209,"journal":{"name":"Defence Technology(防务技术)","volume":"46 ","pages":"Pages 120-132"},"PeriodicalIF":5.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143829801","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Modification and experimental validation of the Forrestal-Warren perforation model for high hardness armor steel plates of intermediate thickness

IF 5

Defence Technology(防务技术) Pub Date : 2025-04-01 DOI: 10.1016/j.dt.2024.11.006

Radovan Djurovic, Predrag Elek, Milos Markovic, Dejan Jevtic

{"title":"Modification and experimental validation of the Forrestal-Warren perforation model for high hardness armor steel plates of intermediate thickness","authors":"Radovan Djurovic, Predrag Elek, Milos Markovic, Dejan Jevtic","doi":"10.1016/j.dt.2024.11.006","DOIUrl":"10.1016/j.dt.2024.11.006","url":null,"abstract":"<div><div>This paper proposes a modification of the Forrestal-Warren perforation model aimed at extending its applicability range to intermediately-thick high-hardness armor steel plates. When impacted by armor-piercing projectiles, these plates tend to fail through adiabatic shear plugging which significantly reduces their ballistic resistance. To address this effect, an approach for determining effective thickness was defined and incorporated into the predictive model. Ballistic impact tests were performed to assess the modification's validity, in which ARMOX 500T steel plates were subjected to perpendicular impacts from 7.62 × 39 mm steel-cored rounds under various velocities. Frequent target failure by soft plugging was observed, as well as the brittle shatter of the hard steel core. Key properties of the recovered plugs including their mass, length and diameter were measured and reported along with the projectiles' residual velocities. Additionally, independent data from the open literature were included in the analysis for further validation. The original Forrestal-Warren model and the novel effective thickness modification were then used to establish the relationship between impact and residual velocities, as well as to determine the ballistic limit velocity. The comparison revealed that the proposed approach significantly improves the model's accuracy, showing a strong correlation with experimental data and reducing deviations to within a few percent. This enhancement highlights the potential of the effective thickness term, which could also be applied to other predictive models to extend their applicability range. Further exploration into other armor steels and impact conditions is recommended to assess the method's versatility.</div></div>","PeriodicalId":58209,"journal":{"name":"Defence Technology(防务技术)","volume":"46 ","pages":"Pages 267-284"},"PeriodicalIF":5.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143829804","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0