Explosion Shock Waves and High Strain Rate Phenomena最新文献

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Tensile Strength Test of Rock at High Strain Rate Using Digital Image Correlation 基于数字图像相关的高应变率岩石抗拉强度测试
Explosion Shock Waves and High Strain Rate Phenomena Pub Date : 2019-07-30 DOI: 10.21741/9781644900338-17
T. Saburi, S. Kubota, Y. Ogata, Yasumori Takahashi
{"title":"Tensile Strength Test of Rock at High Strain Rate Using Digital Image Correlation","authors":"T. Saburi, S. Kubota, Y. Ogata, Yasumori Takahashi","doi":"10.21741/9781644900338-17","DOIUrl":"https://doi.org/10.21741/9781644900338-17","url":null,"abstract":"Tensile strength test of rock at high strain rate was experimentally performed by utilizing the nature of the strength difference. A magnitude of the tensile strength of brittle materials such as rock is much smaller than that of compressive strength. A compressive wave was produced by dynamic loading of explosive charge and made incident on a one end of a rock specimen bar. The compressive wave traveled through the specimen bar and it reflected at the free surface of the opposite end as a tensile wave with reversal amplitude. The tensile wave will cause the spall failure of the specimen at a specific distance from the free surface where the superposition of tensile and compressive waves exceeds the tensile failure strength of the specimen, usually referred to as Hopkinson effect. The dynamic behavior was observed at the side face of the bar specimen using a high-speed video camera, and the captured images were used to analyze the surface displacement behavior using a digital image correlation (DIC) technique. Strain and strain rate distributions on the specimen bar during impact loading were evaluated. The relationship between strain rate and dynamic tensile strength was discussed. Introduction Dynamic tensile strength is an important factor affecting rock fracturing and fragmentation during blasting operation in quarries and mines. For the dynamic strength test, the Split Hopkinson Pressure Bar (SHPB) is widely applied because of the wide range of strain rate applicability. Regarding the application of the SHPB method to brittle materials, there are many studies [1,2] such as concrete and rock materials for compressive strength. The SHPB method can be applied not only by the indirect tension [3] but also by the direct tension [4] for tensile strength. However, when the sample is rock, the pressure bars sandwiching the sample should be jointed even in the tension state. In the case of rock mass test materials, it is specified or recommended that the sample core diameter is 50 mm or more in ASTM [5] and 54 mm or more in ISRM [6] in indirect tension (Brazilian) test to secure the diameter of the material to some content from the presence of crystals and wrinkles. It is necessary to secure the diameter on the side of the incident bar and the transmission bar, and there is a concern that the system as the SHPB test device will become extensive. Therefore, we apply the dynamic tensile strength test using the Hopkinson effect in this study. Explosion Shock Waves and High Strain Rate Phenomena Materials Research Forum LLC Materials Research Proceedings 13 (2019) 97-102 https://doi.org/10.21741/9781644900338-17 98 Experiments The outline of the test equipment is shown in Fig.1. An explosive is placed on one end face of a cylindrical rock sample with a diameter of 30 mm. An explosive is detonated by the EBW detonator and impact pressure is applied to the sample. Thereby, a compressive stress wave propagates in the sample, and when it reaches the free end","PeriodicalId":415881,"journal":{"name":"Explosion Shock Waves and High Strain Rate Phenomena","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134323948","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: 2
Multiphysics Impact Analysis of Carbon Fiber Reinforced Polymer (CFRP) Shell 碳纤维增强聚合物(CFRP)外壳多物理场冲击分析
Explosion Shock Waves and High Strain Rate Phenomena Pub Date : 2019-07-30 DOI: 10.21741/9781644900338-20
H. Khawaja, M. Moatamedi, Z. Andleeb, C. Strand, P. Chen, B. Guo
{"title":"Multiphysics Impact Analysis of Carbon Fiber Reinforced Polymer (CFRP) Shell","authors":"H. Khawaja, M. Moatamedi, Z. Andleeb, C. Strand, P. Chen, B. Guo","doi":"10.21741/9781644900338-20","DOIUrl":"https://doi.org/10.21741/9781644900338-20","url":null,"abstract":"With increasing popularity of Carbon Fiber Reinforced Polymer (CFRP) over time, the need for research in the field has increased dramatically. Many industries, i.e. aeronautical, automotive, and marine are opting to install carbon fiber in their structures to account for harsh environments like cold temperatures applications, but the research on the temperature exposure behavior of the materials are limited. This study aims to investigate the impact resistance of CFRP samples using the air gun tests. Two different shaped pellets (Diabolo and Storm pellets) were used in this work. The pellets speeds were calculated using a high-speed camera. The tests were performed in the room temperature (22°C) as well as in the cold room where the test pieces were exposed to about -28°C for seven days. The experimental studies were performed and compared against finite element simulations using ANSYS®. The studies also included layering of the CFRP samples to find the limiting thickness of pellets penetration. It was concluded that the thickness of 0.79mm and below of CFRP, cannot resist the impact of pellets. The visual inspection of failure revealed that the CFRP has gone through a brittle failure. However, temperature was found to have no significant impact on the results as similar behavior of CFRP was observed in both room conditions (22°C) and cold temperatures (-28°C). Introduction In the last decades, a growing interest has been dedicated in the use of composite materials for structural applications. CFRP composites are gaining a special attention to replace traditional materials in several fields although it is well known that these systems are highly susceptible to internal damage caused by transverse loads even under low-velocity ones [1,2]. In general, CFRP composites can be damaged on the surface and also beneath the surface by relatively light impacts causing invisible impact damage [3]. Therefore, this study has been carried out both to highlight effects of variables linked to geometrical parameters of composite sheets, impactor, and operative conditions. Therefore, this study has been carried out both to highlight effects of variables linked to geometrical parameters of composite sheets, impactor, and operative conditions. Operative conditions affect the material properties as reported in [4-6]. Experimental Setup a. Test Samples Test samples used in this study were from the DragonPlate®, manufactured by Allred and Associates Inc., Elbridge, New York [7]. The CFRP samples used were EconomyPlateTM Solid Explosion Shock Waves and High Strain Rate Phenomena Materials Research Forum LLC Materials Research Proceedings 13 (2019) 115-120 https://doi.org/10.21741/9781644900338-20 116 Carbon Fiber Sheet ~ 1/32\" x 12\" x 12\" (0.79375mm x 304.8mm x 304.8mm) [8]. EconomyPlateTM sheets comprised of orthotropic (non-quasi-isotropic) at 0°/90° orientation laminates [9] (Figure 1.) utilizing a twill weave [10] (Figure 2.), while maintaining a symmetrical and bal","PeriodicalId":415881,"journal":{"name":"Explosion Shock Waves and High Strain Rate Phenomena","volume":"48 1-4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132781669","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: 6
ANFIS Modeling for Prediction of Particle Size in Nozzle Assisted Solvent-Antisolvent Process for Making Ultrafine CL-20 Explosiv 喷管辅助溶剂-反溶剂法制备超细CL-20炸药粒径预测的ANFIS模型
Explosion Shock Waves and High Strain Rate Phenomena Pub Date : 2019-07-30 DOI: 10.21741/9781644900338-21
D. Pal, Shallu Gupta, D. Jindal, A. Kumar, A. Aggarwal, P. Lata
{"title":"ANFIS Modeling for Prediction of Particle Size in Nozzle Assisted Solvent-Antisolvent Process for Making Ultrafine CL-20 Explosiv","authors":"D. Pal, Shallu Gupta, D. Jindal, A. Kumar, A. Aggarwal, P. Lata","doi":"10.21741/9781644900338-21","DOIUrl":"https://doi.org/10.21741/9781644900338-21","url":null,"abstract":"Physical properties such as particle size, surface area and shape of explosive control the rapidity and reliability of initiation, and detonation and thus determine the performance of an explosive device such as slapper detonators. In this paper, Nozzle assisted solvent/antisolvent (NASAS) process for recrystallisation of CL-20 explosive is established. Many process parameters are involved which affect the particle size of the explosive. Therefore an accurate prediction of particle size is required to tailor the particle size. In the present work, an intelligent algorithm is applied to build a simplified relationship between recrystallization process parameters and particle size. This can be used to predict explosive particle size with a wide range of process parameters through an adaptive neuro-fuzzy inference system (ANFIS). The model is trained using experimental data obtained from design of experiment techniques utilizing a MATLAB software. Six process parameters such as Solution pressure, Antisolvent pressure, Antisolvent temperature, Stirrer speed, Solution concentration and Nozzle diameter are used as input variables of the model and the particle size is used as the output variable. The predicted results are in close agreement with experimental values and the accuracy of the model has been tested by comparing the simulated data with actual data from the explosive recrystallization experiments and found to be inacceptable range with maximum absolute percentage error of 11.52 %. The ultrafine CL-20 prepared by NASAS process is used in Slapper detonator application. The threshold initiation voltages for CL-20 based slapper detonator is found to be in the range of 0.9 kV with standard deviation of ±0.1 kV. Introduction The physical properties such as crystal particle size, shape, morphology, crystalline imperfections, purity and microstructure of the inter-crystalline voids of an existing explosive can be altered. There are wide variety of processes available for tailoring particle size and morphology of energetic materials such as solvent/non-solvent recrystallization[1],continuous crystallization of submicrometer energetic materials [2], spray flash evaporation [3]Yang et al. [4] obtained nanoTATB by using solvent/anti-solvent method with a particle size of 60 nm approximately through atomization of solution by a nozzle to small droplets and colliding rapidly with non-solvent flow. There is a need of mathematical model to predict particle characteristics as a function of process parameters to provide a basis for a computer based process control system. Shallu Gupta et al.[5,6], used micro nozzle assisted spraying process (MNASP) for recrystallization of Submicrometer Hexanitrostilbene (sm-HNS) Explosive. The process attributes were optimized using weighted average techniques of Analytical Network Process (ANP). The advantages of neural network based Explosion Shock Waves and High Strain Rate Phenomena Materials Research Forum LLC Materials R","PeriodicalId":415881,"journal":{"name":"Explosion Shock Waves and High Strain Rate Phenomena","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123471151","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
Development of a Compact Container Protecting from Accidental Explosions of High Energy Materials 防止高能材料意外爆炸的紧凑容器的研制
Explosion Shock Waves and High Strain Rate Phenomena Pub Date : 1900-01-01 DOI: 10.21741/9781644900338-10
T. Matsuishi, F. Kawashima, H. Oda, K. Fujiwara
{"title":"Development of a Compact Container Protecting from Accidental Explosions of High Energy Materials","authors":"T. Matsuishi, F. Kawashima, H. Oda, K. Fujiwara","doi":"10.21741/9781644900338-10","DOIUrl":"https://doi.org/10.21741/9781644900338-10","url":null,"abstract":"There are many things in our surroundings that are at risk of explosion (e.g. lithium ion batteries, power modules, spray cans etc.), and there is a possibility of causing great damage to the surroundings due to explosive fragments. For safe operation of them, it is essential to establish a way to protect the surroundings from explosive fragments. In this study, the purpose is to develop a compact container protecting the surroundings from explosive fragments. UltraHigh Molecular Weight polyethylene (UHMW) which is excellent in strength against explosive and penetrationof fragments was used for container, and Dyneema string or Zylon string were wound around the container for suppressing deformation. In order to observe a deformation of containers due to explosion, containers were blown up by explosives, and taken by high speed camera. Experimental results showed that the supporting strings are available for suppressing deformation. Introduction It is expected that power modules will be popularized due to the influence of smart grid and soon, but when dielectric breakdown occurs when high voltage exceeding breakdown voltage is applied, explosion occurs due to high heat of chip of component parts have been confirmed. Besides, there are many things that have a risk of explosion around us, such as lithium ion batteries used in smart phones, headphones, etc. and spray cans used in paints, insecticides, etc. Because of the possibility of damage to the surrounding people and things due to the explosion and the fragments of the explosive component parts, it is essential to establish a method to protect the surroundings from explosion and fragments in order to operate safely. As a method of protecting the surroundings from explosion and fragments, it is conceivable to develop a container that has strength against explosion and penetration. Strength against shock and high speed penetration of fragments is required for the material of the container. And also, in the case of lithium ion batteries or power modules, containers should be lightweight and compact to incorporate into the equipment in which they are used. As a material of container, UHMW which satisfies the above properties was used for container. Also, UHMW was reinforced by Dyneema string or Zylon string protecting from being broken due to an increase in strain. In order to investigate the influence of penetration of fragments, explosives were loaded in metal pipes and placed inside the container and blown up. High speed deformation due to explosion was observed by high speed camera. It was also investigated whether Dyneema and Zylon can be used as the material of the reinforcing layer. Experiments were conducted in Shock Wave Laboratory, Kumamoto University, Japan. Explosion experiment of UHMW1 The deformation of UHMW due to explosion was observed. Sizes of UHMW used in the experiment and a schematic diagram of the experimental device are shown in Fig.1, and the Explosion Shock Waves and High St","PeriodicalId":415881,"journal":{"name":"Explosion Shock Waves and High Strain Rate Phenomena","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117140528","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
Effect of Liner Cone Angle, Liner Thickness and Wave Shaper in Large Caliber Shaped Charge Warheads 大口径聚能弹头衬板锥角、衬板厚度和波形器的影响
Explosion Shock Waves and High Strain Rate Phenomena Pub Date : 1900-01-01 DOI: 10.21741/9781644900338-23
M. Kumar, Y. Singh, P. Kumar
{"title":"Effect of Liner Cone Angle, Liner Thickness and Wave Shaper in Large Caliber Shaped Charge Warheads","authors":"M. Kumar, Y. Singh, P. Kumar","doi":"10.21741/9781644900338-23","DOIUrl":"https://doi.org/10.21741/9781644900338-23","url":null,"abstract":"Shaped charge warheads are being utilized in defence applications against a wide variety of targets provided by armour, RCC and soil cover. Shaped charge warhead focus the explosive energy by the use of a cavity lined with metal normally called a liner. The concentration of energy along the axis of the warhead acts as force multiplier and hence lighter warheads are possible for deeper penetration. Performance of the shaped charge warhead is function of jet tip velocity, jet length and break up time (BUT). These performance parameters are greatly influenced by liner geometry, liner thickness and liner cone angle and selection of explosive. In this paper, simulations using AUTODYN numerical hydrocode were carried out to study the effect of liner geometry (Tulip vs conical), liner cone angle (50,60,70,80) and liner thickness(4mm,6mm,8mm,10mm and 12mm) on large caliber shaped charge warheads. Numerical simulations were also done to study the effect of wave shaper in shaped charge warhead. A shaped charge warhead of dia.340mm has been designed by using AUTODYN numerical hydrocode. OFE Copper (ASTM B152 C10100) is used as liner material. A wave shaper of dia.210mm and nylon material was used in shaped charge warhead. An Eulerian approach was used for the liner, casing, wave shaper and explosive parts. A single point initiation in the centre of the rear end of warhead was chosen. The numerical simulation results showed that the jettip velocity decreases in between 15-20% of liner position with increasing the cone angle when the other parameters are the same. For the cone angle 60, jet tip-velocity decreases as liner thickness is increased from 4mm (Vj-tip : 8.14 km/s) to 12mm (Vj-tip : 6.7 km/s). It was also realized that in case of wave shaper warhead there is more than 15% increase in jet tip velocity and 10% increase in jet length in comparison to without wave shaper warhead due to increase in collapse velocity of liner elements. The slug velocity is 1.22km/s in case of with wave shaper warhead whereas it was 1.05 km/s in without wave shaper. It means that a decision for the selection of liner geometry and dimensions of a shaped charge penetrator should be done according to target, required desired effect on target, permissible weight and available space for the warhead.","PeriodicalId":415881,"journal":{"name":"Explosion Shock Waves and High Strain Rate Phenomena","volume":"113 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128331228","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
Joining of Dissimilar Metals Using Low Pressure Difference 用低压差连接异种金属
Explosion Shock Waves and High Strain Rate Phenomena Pub Date : 1900-01-01 DOI: 10.21741/9781644900338-12
A. Takao, R. Tomoshige, A. Kira
{"title":"Joining of Dissimilar Metals Using Low Pressure Difference","authors":"A. Takao, R. Tomoshige, A. Kira","doi":"10.21741/9781644900338-12","DOIUrl":"https://doi.org/10.21741/9781644900338-12","url":null,"abstract":"In explosive welding, the velocity of flyer plate requisite for joining of two different kinds of metallic sheet is several hundred meters per second. We thought that the velocity would be accomplished easily without explosives. A lightweight projectile, which receives higher pressure on the rear side than front side, goes forward and is accelerated to extremely high velocity, even if the pressure difference is small. Joining should be achieved, when a thin metal sheet attached on the front of the projectile collides with another metal plate fixed on an oblique block. Oblique collisions between several kinds of metal were examined. Examinations of the joint interfaces of this resultant by both scanning electron and optical microscopes find no opening. Detachment at the joint interface did not occur, when tensile forces were applied. Therefore, we regard that the joint interface has sufficient strength. Introduction High-energy-rate processing has many excellent features that differ from static processing. For example, explosive welding, which is one of the methods for producing cladding materials, is applied to combinations in dissimilar metals and non-metals that are difficult to bond in diffusion bonding. Metal processing and material synthesis have been carried out with shock waves generated by explosives [1, 2]. The method that does not use explosives was originated, as experiments using explosives require qualifications to handle them and the cost of the experiment is high. The general methods of joining metals are mechanical bonding, metallurgical bonding, and chemical bonding. Each has advantages and disadvantages, and it is necessary to select a bonding method suitable for the material and bonding conditions to join metals efficiently. Explosive welding has the best features among these bonding methods. A simple projectile accelerator using a difference in air pressure has been produced. The equivalent qualifications to explosive welding will be succeeded, if the device were used. When this device is applied to sheet metal forming, good results than expected was obtained. Then I tried joining of dissimilar metals. Experiment In explosive welding, the flyer plate is arranged in parallel with an appropriate distance from the parent plate, and one end of the explosive placed on the flyer plate is detonated. In the proposed method, the flyer plate is accelerated by the air pressure difference substitute for the explosive. Since a high pressure difference is required to obtain a large acceleration, a vacuum collision chamber and a high-pressure chamber are made. Figure 1 is a photograph of the overall view of the projectile accelerator. A metal plate attached to the flyer plate is accelerated by the pressure Explosion Shock Waves and High Strain Rate Phenomena Materials Research Forum LLC Materials Research Proceedings 13 (2019) 69-73 https://doi.org/10.21741/9781644900338-12 70 difference, and it collides with another metal plate at high spee","PeriodicalId":415881,"journal":{"name":"Explosion Shock Waves and High Strain Rate Phenomena","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116057807","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
Effect of Silicon Carbide Particles in Explosive Cladded Aluminum Hybrid Composites 碳化硅颗粒对爆炸包覆铝杂化复合材料的影响
Explosion Shock Waves and High Strain Rate Phenomena Pub Date : 1900-01-01 DOI: 10.21741/9781644900338-27
S. Saravanan, K. Raghukandan, G. Murugan
{"title":"Effect of Silicon Carbide Particles in Explosive Cladded Aluminum Hybrid Composites","authors":"S. Saravanan, K. Raghukandan, G. Murugan","doi":"10.21741/9781644900338-27","DOIUrl":"https://doi.org/10.21741/9781644900338-27","url":null,"abstract":"","PeriodicalId":415881,"journal":{"name":"Explosion Shock Waves and High Strain Rate Phenomena","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125400536","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: 1
Underwater Explosive Welding of Tin and Aluminium Plates 锡铝板水下爆炸焊接
Explosion Shock Waves and High Strain Rate Phenomena Pub Date : 1900-01-01 DOI: 10.21741/9781644900338-25
Satyanarayan
{"title":"Underwater Explosive Welding of Tin and Aluminium Plates","authors":"Satyanarayan","doi":"10.21741/9781644900338-25","DOIUrl":"https://doi.org/10.21741/9781644900338-25","url":null,"abstract":"In the present study, underwater explosive welding of commercial pure Sn and Al plates was attempted. Distance between the explosive and the center of the sample was varied to change the pressure applied to the plates to be welded. Evolution of interfacial microstructures at the welded Sn/Al joints was assessed. An increase in the distance between explosive and the sample exhibited decrease in the formation of wavy morphology at the interface. Cross−sectional interfacial microstructures clearly indicated that, Sn and Al plates can be joined successfully using underwater explosive welding technique. Introduction The Explosive welding (EXW) is a solid state process used for the joining (metallurgical) of similar or dissimilar a metal which is regarded as one of the most widely employed materials processing technique [1]. The EXW is generally performed in an open atmosphere. However, it is reported that conventional explosive welding always poses a problem for welding of materials, particularly for thin metal plate (below 1mm thickness) as well as brittle materials such as amorphous ribbon/ceramics and fusing of tungsten (W)/Cu [2,3]. Literature suggested that by using underwater explosive welding a significant decrease in kinetic energy (K.E) loss at the interface of flyer plate and base plate can be achieved [4−6]. In this method, water acts as a pressure transmitting medium. The underwater shock waves prevent the distortion of the welded joint and ensure the integrity of the joints. Hence, underwater explosive welding is regarded as one of the best and novel welding techniques [7, 8]. It reported that, Al/Steel, Al/Cu, Sn/Cu and Cu/Stainless Steel combinations of materials are the most essential in the electrical engineering and among these Al/Cu joints are widely used as electrical connectors in many industries because of their good corrosion resistance and electrical conductivity [9]. Although numerous investigations on explosive welding of various metal combinations were conducted by the researchers [9−12] welding and cladding of Sn and Al using this technique have not been paid attention. Sn based solder alloys are electrically connected with metallic components (most notably the Cu conductors) in the electronic device. However there is no solder alloy in electronic applications which operates with Al in the same way that ordinary solders operate with copper. Because Al does not alloy readily with solders, moreover the Al surface is covered with a thin invisible coating of aluminium oxide. Thin oxide film makes it difficult to join dissimilar materials [13]. Thus, the aim of current study is to make an attempt to fusing of Sn and Al plates using underwater explosive welding method. Further, evolution of interfacial microstructures between welded Sn/Al joint is investigated. Explosion Shock Waves and High Strain Rate Phenomena Materials Research Forum LLC Materials Research Proceedings 13 (2019) 149-153 https://doi.org/10.21741/9781644900338-2","PeriodicalId":415881,"journal":{"name":"Explosion Shock Waves and High Strain Rate Phenomena","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128177345","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
Advanced Manufacturing under Impact / Shock Loading: Principles and Industrial Sustainable Applications 冲击/冲击载荷下的先进制造:原理和工业可持续应用
Explosion Shock Waves and High Strain Rate Phenomena Pub Date : 1900-01-01 DOI: 10.21741/9781644900338-3
A. Mamalis
{"title":"Advanced Manufacturing under Impact / Shock Loading: Principles and Industrial Sustainable Applications","authors":"A. Mamalis","doi":"10.21741/9781644900338-3","DOIUrl":"https://doi.org/10.21741/9781644900338-3","url":null,"abstract":"Trends and developments in advanced manufacturing of advanced materials from macroto nanoscale subjected to static, lowspeed / high speed / hypervelocity impact and shock loading, with sustainable industrial applications to net-shape manufacturing, bioengineering, transport, energy and environment, defense and safety, an outcome of the very extensive, over 50 years, work on these scientific and industrial areas performed by the author and his research international team, are briefly outlined. The impact of such advanced materials, manufacturing and loading techniques, products and applications on many technological areas, e.g. the manufacturing/machine tool sector, communications / data storage, transportations, health treatment, energy conservation, environmental and human-life protection, is significant and highly beneficial. Introduction The topics considered, an outcome of the very extensive academic and industrial work over 50 years on these fields performed by the author and his research international team, may be listed as: • Mechanics (Structural plasticity, Low / High speed impact loading, Hypervelocity impact, Shockwaves loading) • Precision / Ultraprecision manufacturing from macro-, microto nanoscale (Metal forming, Metal removal processing, Surface engineering / Wear, Non-conventional techniques) • Nanotechnology / Nanomaterials manufacturing • Ferrous and non-ferrous materials (Metals, Ceramics, Superhard, Polymers, Composites, Multifunctional), from macroto nanoscale (Nanostructured materials, Nanoparticles, Nanocomposites) • Powder production and processing technologies (High strain-rate phenomena and treatment under shock: Explosives, Electromagnetics, High temperature / high pressure techniques) • Biomechanics / Biomedical engineering • Transport / Crashworthiness of Vehicles: Passive and active safety for passengers and cargo (Surface transport: Automotive, Railway; Aeronautics: Aircraft, Helicopters) • Energy (Superconductors, Semiconductors, Electromagnetics, Solar cells, Photovoltaics, Nuclear reactors) • Environmental aspects (Impact on climate change: Nanotechnology; Automotive industry; Aeronautics industry) • Safety (Detection of explosives and hazardous materials) • Defense (Ballistics, Projectiles hitting targets, Shock loading) Explosion Shock Waves and High Strain Rate Phenomena Materials Research Forum LLC Materials Research Proceedings 13 (2019) 13-24 https://doi.org/10.21741/9781644900338-3 14 • Industrial sustainability Some trends and developments in Advanced Manufacturing from macroto nanoscale in the important engineering topics from industrial, research and academic point of view: nanotechnology, precision /ultraprecision engineering and advanced materials (metals, ceramics, polymeric, composites/nanocomposites) under static, low/high speed impact, hypervelocity impactand shock loading, with sustainable industrial applications to net-shape manufacturing, bioengineering, transport, energy/environment and defen","PeriodicalId":415881,"journal":{"name":"Explosion Shock Waves and High Strain Rate Phenomena","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126672806","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
Effect of Added Molybdenum on Material Properties of Zr2SC MAX Phase Produced by Self-Propagating High Temperature Synthesis 添加钼对高温自传播合成Zr2SC MAX相材料性能的影响
Explosion Shock Waves and High Strain Rate Phenomena Pub Date : 1900-01-01 DOI: 10.21741/9781644900338-14
H. Inokawa, K. Ishida, R. Tomoshige, K. Hokamoto, Shigeru Tanaka
{"title":"Effect of Added Molybdenum on Material Properties of Zr2SC MAX Phase Produced by Self-Propagating High Temperature Synthesis","authors":"H. Inokawa, K. Ishida, R. Tomoshige, K. Hokamoto, Shigeru Tanaka","doi":"10.21741/9781644900338-14","DOIUrl":"https://doi.org/10.21741/9781644900338-14","url":null,"abstract":"","PeriodicalId":415881,"journal":{"name":"Explosion Shock Waves and High Strain Rate Phenomena","volume":"12 5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123661597","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: 5
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