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Numerical and experimental investigation on aluminum 6061-Vgrooved stainless steel 304 explosive cladding

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Defence Technology（防务技术） 2022年第2期18卷 249-260页

作者： C.Wilson dhileep kumar s.saravanan K.Raghukandan Department of Mechanical Engineering Annamalai UniversityAnnamalainagarTamilnadu608002India Department of Manufacturing Engineering Annamalai UniversityIndia

This study attempts to analyze the microstructure and interface behavior of aluminum 6061(Al 6061)-Vgrooved stainless steel(ss304)explosive cladding by numerical and experimental *** simulation was performed by smoothed Particle Hydrodynamics(sPH)technique,in ANsYs AUTODYN,and the results are correlated with experimental *** machining of V-grooves on the base plate transform the melted layer formed in conventional cladding(without grooves on the base plate)into a smooth undulating interface,for a similar experimental *** flyer plate and collision velocities,observed in numerical simulation,are in good agreement to the analytical *** pressure developed in the flyer plate is higher than the base plate and the maximum pressure is witnessed at the collision point irrespective of grooved base plate or *** temperature developed in the collision point of conventional explosive cladding exceeds the melting point of both the participant metals,whereas,it exceeds the melting point of aluminum alone,in case of V-grooved base plate *** shear and impact strengths of the V-grooved base plate clads are higher than the conventional clads and the fracture surfaces exhibit mixed modes of fracture.

关键词： Explosive cladding Dissimilar metals Grooves Numerical simulation Interface strength

不同夹层爆炸复合铝-不锈钢板的显微组织、强度和焊接窗口

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Transactions of Nonferrous Metals society of China 2022年第1期32卷 91-103页

作者： s.saravanan K.RAGHUKANDAN Department of Mechanical Engineering Annamalai UniversityAnnamalainagar608002TamilnaduIndia Department of Manufacturing Engineering Annamalai UniversityAnnamalainagar608002TamilnaduIndia

以1100铝、纯铜和304不锈钢为夹层,用爆炸复合法制备5052铝-316不锈钢(Al 5052-ss 316)复合板。采用不同工艺参数,包括相隔距离、炸药质量比(炸药质量与飞片质量比)和倾斜角得到实验结果。夹层的使用使焊接窗口的下边界发生位移,焊接区... 详细信息

以1100铝、纯铜和304不锈钢为夹层,用爆炸复合法制备5052铝-316不锈钢(Al 5052-ss 316)复合板。采用不同工艺参数,包括相隔距离、炸药质量比(炸药质量与飞片质量比)和倾斜角得到实验结果。夹层的使用使焊接窗口的下边界发生位移,焊接区域增大40%。在此基础上,设计考虑第三个操作参数影响的三轴焊接窗口。使用夹层后,传统Al 5052-ss 316炸药复合界面形成的连续熔融层转变为光滑的界面,其中没有或存在少量的金属间化合物。含夹层复合层的显微硬度、抗拉强度和剪切强度均高于传统爆炸复合层,且使用不锈钢夹层的Al5052-ss 316爆炸复合层具有最高的显微硬度、抗拉强度和剪切强度。

关键词：显微组织强度焊接窗口 Al 5052 316不锈钢爆炸复合夹层

Effect of silicon carbide and wire-mesh reinforcements in dissimilar grade aluminium explosive clad composites

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Defence Technology（防务技术） 2020年第6期16卷 1160-1166页

作者： s.saravanan K.Raghukandan Department of Mechanical Engineering Annamalai UniversityAnnamalainagarTamilnaduIndia Department of Manufacturing Engineering Annamalai UniversityAnnamalainagarTamilnaduIndia

Aluminium composites are inevitable in the manufacture of aircraft structural elements owing to less weight,superior corrosion resistance and higher specific *** composites reduce the weight of the aircraft,improve the fuel efficiency and enhance the maintenance *** study proposes the development of dissimilar grade aluminium(aluminium 1100-aluminium 5052)composites with different reinforcement’s viz.,stainless steel wire-mesh,silicon carbide(siC)powders and siC powder interspersed wire-mesh,by explosive cladding ***-mesh enhances the friction and restricts the movement of flyer plate to craft a defect free clad,while siC particles form a band on the *** strength is obtained when siC powder interspersed wire mesh is employed as *** dissimilar aluminium explosive clad with siC particle reinforcement results in lower strength,which is higher than that of the weaker parent alloy and that of the conventional dissimilar aluminium explosive clads without any reinforcement.

关键词： Explosive cladding Aluminium Wire mesh silicon carbide Microstructure strength

Intelligent Machine Learning with Metaheuristics Based sentiment Analysis and Classification

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Computer systems science & Engineering 2023年第1期44卷 235-247页

作者： R.Bhaskaran s.saravanan M.Kavitha C.Jeyalakshmi seifedine Kadry Hafiz Tayyab Rauf Reem Alkhammash Department of Information Technology PSNA College of Engineering and TechnologyDindigul624622India Department of Electronics and Communication Engineering K.Ramakrishnan College of TechnologyTrichy621112India Department of Electronics and Communication Engineering K.Ramakrishnan College of TechnologyTiruchirappalli621112India Deparmtent of Applied Data science Noroff University CollegeKristiansandNorway Department of Computer science Faculty of Engineering&InformaticsUniversity of BradfordBradfordUnited Kingdom English Department University CollegeTarabaTaif UniversityTaif21944Saudi Arabia

sentiment Analysis(sA)is one of the subfields in Natural Language Processing(NLP)which focuses on identification and extraction of opinions that exist in the text provided across reviews,social media,blogs,news,and so *** has the ability to handle the drastically-increasing unstructured text by transform-ing them into structured data with the help of NLP and open source *** current research work designs a novel Modified Red Deer Algorithm(MRDA)Extreme Learning Machine sparse Autoencoder(ELMsAE)model for sA and *** proposed MRDA-ELMsAE technique initially performs pre-processing to transform the data into a compatible ***,TF-IDF vec-torizer is employed in the extraction of features while ELMsAE model is applied in the classification of ***,optimal parameter tuning is done for ELMsAE model using MRDA technique.A wide range of simulation analyses was carried out and results from comparative analysis establish the enhanced effi-ciency of MRDA-ELMsAE technique against other recent techniques.

关键词： sentiment analysis data classification machine learning red deer algorithm extreme learning machine natural language processing

Temporal and spatial variation in the sediment volume along the beaches between Ovari and Kanyakumari(sE INDIA)

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International Journal of sediment Research 2013年第3期28卷 384-395页

作者： s.saravanan N.CHANDRAsEKAR V.JOEVIVEK Centre for GeoTechnology Manonmaniam Sundaranar University Civil Engineering Department Christ the King Engineering College

A 2-year set of profile data from Ovari to Kanyakumari Beach,sE India has been analysed by using empirical orthogonal function(EOF) techniques to identify characteristic patterns of temporal and spatial variation in the sediment volume of the *** results show that variation in the sediment volume of the beach is determined by interaction between the biennial and seasonal *** analysis the pattern of alongshore sediment exchange along the study *** method facilitated separation of onshore-offshore and alongshore modes of sediment transfer and identification of the patterns of alongshore sediment *** eigenfunction modes confirm the dominance of biennial,annual,and biannual sediment transfers occurring on study *** sediment movement along the shoreline of study area is mainly governed by the forces associated with the incoming waves and the availability of sediments within the *** present investigation has been made as an attempt to appreciate the sediment movement in relation to wave activity along the *** longshore sediment transport is intensive in the northerly direction as compared to southerly *** normal condition is for and to be moved annually or more frequently in the shallows and on the *** and wave-driven currents cause longshore drift of sand along the beach and offshore.

关键词： Beach Profile sediment movement Beach volume change India

Microstructural characterization of silicon carbide reinforced dissimilar grade aluminium explosive clads

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Defence Technology（防务技术） 2020年第3期16卷 689-694页

作者： s.saravanan H.Inokawa R.Tomoshige K.Raghukandan Research Centre for Advances in Impact Engineering Sojo UniversityKumamotoJapan Department of Mechanical Engineering Annamalai UniversityTamilnaduIndia Department of Nanoscience Sojo UniversityKumamotoJapan Department of Manufacturing Engineering Annamalai UniversityTamilnaduIndia

Aluminium composites are inevitable in ship building,commercial and defence aircrafts construction due to their light weight,high strength to weight ratio,admirable properties and cost *** this study,the microstructural characteristics of explosive cladded dissimilar grade aluminium(Al 1100-Al 5052) clad composites reinforced with silicon carbide(siC) particles is *** taken at the interface by optical and scanning electron microscopes(sEM) revealed the formation of a silicon carbide layer between the dissimilar grade aluminium *** reaction layers were witnessed at few locations along the interface,the diffusion of atoms between the participant metals is not visible as confirmed by energy dispersive spectroscopy,elemental mapping,line analysis and X-ray diffraction(XRD).The variation in microhardness at various regions of the silicon carbide reinforced dissimilar aluminium explosive clad is *** increase in tensile strength of the siC laced clad is also presented.

关键词： Explosive cladding Aluminium silicon carbide Microstructure Elemental mapping Hardness

Correlation Between Coastal Geomorphology and Tsunami Inundation Along the Coast of Kanyakumari,India

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Journal of Ocean University of China 2012年第1期11卷 1-6页

作者： N.Chandrasekar s.saravanan M.Rajamanickam C.Hentry G.V.Rajamanickam Centre for GeoTechnology Manonmaniam Sundaranar UniversityTirunelveliIndia Department of Disaster Management SASTRA UniversityThanjavurIndia

An investigation has been carried out in the vicinity of the coastal villages of Kanyakumari District,India to decode the influence of coastal geomorphology on inundation degree and run-up *** though the tsunami waves approach the study area in different patterns,the consequences are found to be mainly dependent upon the coastal configuration and local geographic setting,the study area are considered to be of three types based upon the geomorphic arrangement,namely shallow coast,elevated coast and estuarine *** inundation and run-up level vary from coast to coast even though there is no remarkable variation in the intensity of the approaching tsunami *** inundation extent ranges from to 54 m to 413 m with maximum along estuarine coast and minimum along elevated *** coast recorded the maximum run-up level of about 6 m and the minimum of about 1 m along the elevated *** percentage of inundated area in the total coastal area varies between 19% to 10% along estuarine coast and elevated coast *** and run-up level cannot be appreciable in the inland along the elevated *** beaches of elevated coast are less affected whereas those of estuarine coast are highly *** is limited in the elevated beaches along the study area.

关键词：河口海岸沿海地区淹没海啸地貌马里印度淹水程度

FREE CONVECTION IN AN INCLINED ENCLOsURE WITH INTERNAL HEAT GENERATION

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FREE CONVECTION IN AN INCLINED ENCLOSURE WITH INTERNAL HEAT ...

A new 6-component accelerometer force balance for short duration ground testing facilities

第四届亚洲计算流体力学会议

作者： s.saravanan P.Kandaswamy Department of Mathematics Bharathiar University Coimbatore 641 046 Tamil Nadu India Department of Mathematics Bharathiar University Coimbatore 641 046 Tamil Nadu India

＜正＞ A numerical simulation of two dimensional natural convection in a fully closedtilted square enclosure in the presence of a centered, square, heat generating solidblock is studied. The two vertical walls of the enclosure are maintained at two differentconstant temperatures. ADI and sOR numerical techniques are used to solve thediscretized equations. The heat transfer is found to be enhanced when α, the tiltingparameter takes lower negative values.

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A new 6-component accelerometer force balance for short dura...