检索结果-南通市图书馆

Influence of Machining Parameter on Tool Life While Machining Hybrid Metal Matrix Composites

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Minerals and Materials Characterization and Engineering 2020年第6期8卷 440-458页

作者： C. R. Prakash Rao v. ravi kumar D. v. ravi kumar Poorna Chandra M. v.dav.asa M. S. Rajagopal Department of Mechanical Engineering Global Academy of Technology Bengaluru India Department of Mechanical Engineering Dayananda Sagar University Bangalore India

A metal matrix composite constitutes a continuous metallic matrix and a discontinuous phase known as reinforcement. The hybrid metal matrix composites (Hmmcs) hav. been used to manufacture driv. shafts, disc brake rot... 详细信息

A metal matrix composite constitutes a continuous metallic matrix and a discontinuous phase known as reinforcement. The hybrid metal matrix composites (Hmmcs) have been used to manufacture drive shafts, disc brake rotors, brake drums, connecting rods pistons, engine block cylinder liners for automotive and rail vehicle applications. The Hmmcs castings of diameter 120 mm and length 300 mm were prepared through sand mould technique following stir casting methodology. The cast components further subjected to evaluation of physical properties and machining tests using two grades of coated inserts and PCD inserts. The experiments were carried out following ISO 3685 standards. The coating thickness of the TiN coated and TiAlN coated inserts were measured using Kalo testing method; the results of the test show that the interface of the substrate and coating was free from the porosity, and the coating thickness of TiN coating was 4.84 microns and TiAlN coating was measured 4.6 microns. The results of the experiments show that performance of the PCD insert was better than coated inserts at 0.1 mm/rev feed;v.rdana;">v.rdana;">v.rdana;">v.rdana;"> howev.r at 0.2 mm/rev.lution feed PCD insert failed by micro chipping of cutting edge while ma

关键词： Composites Hybrid Metal Matrix Composites Coated Inserts PCD Inserts Turning Tool Life Testing

Dynamics of some new solutions to the coupled DSW equations trav.ling horizontally on the seabed

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Ocean Engineering and Science 2024年第2期9卷 154-163页

作者： Raj kumar ravi Shankar v.rma Department of Mathematics Faculty of Engineering&TechnologyVeer Bahadur Singh Purvanchal UniversityJaunpur 222003India

The system of(1+1)-coupled Drinfel’d-Sokolov.Wilson equations describes the surface gravity wav.s trav.lling horizontally on the *** objectiv. of the present research is to construct a new v.riety of analytical solutions for the *** inv.riants are deriv.d with the aid of Killing form by using the optimal algebra classification v.a Lie symmetry *** inv.riant solutions inv.lv. time,space v.riables,and arbitrary *** adequate constraints on arbitrary constants,solutions are represented graphically to make them more applicable in designing sea *** behav.or of solutions shows asymptotic,bell-shaped,bright and dark soliton,bright soliton,parabolic,bright and kink,kink,and periodic *** constructed results are nov.l as the reported results[26,28,29,30,33,38,42,49]can be deduced from the results deriv.d in this *** remaining solutions deriv.d in this study,are absolutely different from the earlier *** this study,the physical character of analytical solutions of the system could aid coastal engineers in creating models of beaches and ports.

关键词： Coupled Drinfel’d-Sokolov.Wilson model Inv.riants Killing form Optimal sub algebra Lie symmetry reductions

Synthesis and Antibacterial Activ.ty of Urea and Thiourea Deriv.tiv.s of Anacardic Acid Mixture Isolated from A Natural Product Cashew Nut Shell Liquid (CNSL)

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Organic Chemistry 2012年第3期2卷 267-275页

作者： N. Subhakara Reddy A. Sriniv.s Rao M. Adharv.na Chari v. ravi kumar v. Jyothy v. Himabindu Bio-Pharma Pv.. Ltd. Westren Hills Hyderabad India Centre for Env.ronment Institute of Science and Technology JNT University Hyderabad India Medicinal Chemistry Laboratory GVK Biosciences Pvt. Ltd. Hyderabad India

Synthesis and antibacterial activ.ty of some nov.l urea and thiourea deriv.tiv.s (8a - 8k, 9a - 9f) of anacardic acid prepared from commercially av.ilable anacardic acid which is obtained from natural product Cashew Nut Shell Liquid (CNSL). Compounds (8a - 8k, 9a - 9f) were tested for Gram positiv. and Gram negativ. bacterial cultures. Most of the compounds were showed activ. compared with standard drug ampicilline.

关键词： Synthesis Urea and Thiourea Deriv.tiv.s Anacardic Acid Anti-Bacterial Activ.ty

Synthesis and Antibacterial Activ.ty of Urea and hiourea Deriv.tiv.s at C-8 Alkyl Chain of Anacardic Acid Mixture Isolated from a Natural Product Cashew Nut Shell Liquid (CNSL)

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Organic Chemistry 2011年第4期1卷 167-175页

作者： N. Subhakara Reddy A. Sriniv.s Rao M. Adharv.na Chari v. ravi kumar v. Jyothi v. Himabindu 不详

Synthesis and antibacterial activ.ty of some nov.l urea and thiourea deriv.tiv.s (7a-7k, 8a-8f) of anacardic acid prepared from commercially av.ilable anacardic acid which is obtained from natural product Cashew Nut Shell Liquid (CNSL). Compounds (7a-7k, 8a-8f) were tested for Gram positiv. and Gram negativ. bac- terial cultures. Most of the compounds were showed activ. compared with standard drug ampicilline.

关键词： Synthesis Urea and Thiourea Deriv.tiv.s Anacardic Acid Anti-Bacterial Activ.ty

Unsuperv.sed intrusion detection system for in-v.hicle communication networks

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Safety Science and Resilience 2024年第2期5卷 119-129页

作者： Kabilan N v.nayakumar ravi v.Sowmya Center for Computational Engineering and Networking(CEN) Amrita School of Artificial InteligenceAmrita Vishwa VidyapeethamCoimbatoreIndia Center for Artificial Intlligence Prince Mohammad Bin Fahd UniversityKhobarSaudi Arabia

In-v.hicle communication has been optimized day to day to keep updated of the *** area network(CAN)is used as a standard communication method because of its efficient and reliable ***,CAN is prone to sev.ral network lev.l attacks because of its lack in security *** methods hav. been introduced to incorporate this in *** proposed an unsuperv.sed method of intrusion detection for in-v.hicle communication networks by combining the optimal feature extracting ability of autoencoders and more precise clustering using fuzzy C-means(FCM).The proposed method is light weight and requires less computation *** performed an extensiv. experiment and achiev.d an accuracy of 75.51%with the ML35o in-v.hicle intrusion *** experimental result,the proposed method also works better for other intrusion detection problems like wireless intrusion detection datasets such as WNS-DS with accuracy of 84.05%and network intrusion detection datasets such as KDDCup with accuracy 60.63%,UNSW_NB15 with accuracy 73.62%and Information Security Center of Excellence(Iscx)with accuracy 74.83%.Ov.rall,the proposed method outperforms the existing methods and av.ids labeled datasets when training an in-v.hicle intrusion detection *** results of the experiment of our proposed method performed on v.rious intru-sion detection datasets indicate that the proposed approach is generalized and robust in detecting intrusions and can be effectiv.ly deployed in real time to monitor CAN traffic in v.hicles and proactiv.ly alert during attacks.

关键词： Controlarea network Intrusiondetection Unsuperv.sed learning Autoencoders Fuzzy C-means

Secure and resilient improv.d image steganography using hybrid fuzzy neural network with fuzzy logic

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Safety Science and Resilience 2024年第1期5卷 91-101页

作者： Sachin Dhawan Hemanta kumar Bhuyan Subhendu kumar Pani v.nayakumar ravi Rashmi Gupta Arun Rana Alanoud Al Mazroa Dorset College King George BlvdSurreyBritish ColumbiaCanada Department of Information Technology Vignan’s Foundation for ScienceTechnology and Research(Deemed to be University)Andhra PradeshIndia Krupajal Computer Academy Biju Patnaik University of Technology(BPUT)Rourkela 751002India Center for Artificial Intelligence Prince Mohammad Bin Fahd UniversityKhobarSaudi Arabia NSUT East Campus(Formerly AIACTRDelhi 110031India(Affiliated to Guru Gobind Singh Inderaprastha University))Dwarka 110078India Department of Computer Science and Engineering Galgotias College of Engineering and Technology Greater Noida 201310Uttar PradeshIndia Department of Information Systems College of Computer and Information SciencesPrincess Nourah bint Abdulrahman University(PNU)P.O.Box 84428Riyadh 11671Saudi Arabia

The exponential growth in communication networks,data technology,adv.nced libraries,and mainly World Wide Web serv.ces has played a piv.tal role in facilitating the retriev.l of v.rious types of information as ***,this progress has also led to security concerns related to the transmission of confidential ***,safeguarding these data during communication through insecure channels is crucial for obv.ous *** emergence of steganography offers a robust approach to concealing confidential information,such as images,audio tracks,text files,and v.deo files,in suitable media carriers.A nov.l technique is env.sioned based on back-propagation *** to the proposed method,a hybrid fuzzy neural network(HFNN)is applied to the output obtained from the least significant bit substitution of secret data using pixel v.lue dif-ferences and exploiting the modification *** simulation and test results,it has been observ.d that the proposed methodology achiev.s secure steganography and superior v.sual *** the experiments,we observ.d that for the secret image of the cameraman,the PSNR&MSE v.lues of the proposed technique are 61.963895 and 0.041361,respectiv.ly.

关键词： Image enhancement Image processing Steganography Deep learning Fuzzy neural combination

Experimental Study on Polymer Nanocomposites Based Strain Sensors for Structural Health Monitoring

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Minerals and Materials Characterization and Engineering 2021年第5期9卷 512-527页

作者： R. Kiran K. R. Prakash Poorna Chandra v. ravi kumar P. B. Asha C. R. Prakash Rao Department of Mechanical Engineering Global Academy of Technology Bengaluru India Department of Mechanical Engineering NIE Mysuru India

The aim is to dev.lop a mechanically flexible polymer nanocomposite film-based strain sensors that could act towards sustainable structural health monitoring for civ.l structures. The dev.loped polymer nanocomposite film combinations will be monitored for their structural, electrical and mechanical behav.ors and the optimized formulations will be tried for strain sensing applications. The films were cast by using Pv. as the base polymer and copper doped silv.r nitrate as the nanofiller along with the use of glycine as fuel which is a combination of silv.r and copper nitrate. After preparing the films, they were tested for conductiv.ty under tensile loading using a digital multi meter connected to a UTM. The samples were subjected to XRD, FTIR and SEM for further analysis. The results of the experiments shown I-v.characteristics of Pv.-CuAgO composites from 5% to 25% CuAgO hav. been increased tremendously with the incorporation of filler material. For 100 v. the maximum current v.lue obtained for plain Pv. is only 7.7E-8 A, whereas CuAgO particles shown 0.0025 A at 5% reinforcements and further increased nearly to 0.025 A for 25% of CuAgO particles into the Pv. matrix.

关键词： Polymer Nanocomposites

Methyl-salicylate:A surv.illance system fortriggering immunity in neighboring plants

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Integrativ. Plant Biology 2024年第2期66卷 163-165页

作者： Saumya Jaiswal Durgesh kumar Tripathi ravi Gupta JingHe Zhong-Hua Chen v.jay Pratap Singh Plant Physiology Laboratory Department of Botany C.M.P.Degree CollegeA Constituent Post Graduate College ofUniversity of AllahabadPrayagraj 211002India Crop Nanobiology and Molecular Stress Physiology LabAmity Institute of Organic Agriculture Amity University UttarPradeshNoida 201313India College of General Education Kookmin UniversitySeoul 02707South Korea School of Science Western Sydney UniversitySydney 2751New South WalesAustralia Hawkesbury Institute for the Env.ronment Western SydneyUniversitySydney 2751New South WalesAustralia

Plant behav.oral actions hav. been one of the major topicsof research in plant biology and *** actionsfrom plants are determined by their instant structural andphysical reactions to the circumstances(Bouwmeester et al.,2019).Upon sensing abiotic factors such as salinity,flooding,high temperature,drought,plants make suitable changes intheir physiology and behav.or to surv.v. such harsh conditions.

关键词： immunity neighboring salinity

Optimization of Wear Factors of Aluminium Hybrid Metal Matrix Composites Using Taguchi Method

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Journal of Minerals and Materials Characterization and Engineering 2021年第1期9卷 38-47页

作者： P. B. Asha Sneha Sarika Murthy C. R. Prakash Rao v. ravi kumar R. Kiran C. N. Suresha Department of Mechanical Engineering Global Academy of Technology Bengaluru India Department of Mechanical Engineering Amruta Institute of Engineering & Management Sciences Bengaluru India

Hybrid metal matrix composites (Hmmc) are found to be more superior than the conv.ntional composite materials because of their improv.d mechanical properties, which can be suited for an extensiv. range of engineering applications. Automobile and aerospace industries widely make use of hybrid composites as they possess excellent corrosion, wear resistance, low density, and high strength. This paper displays the strategy to build the hybrid composite utilizing Stir casting Method. Present inv.stigation includes the creation of composites utilizing boron carbide (2%, 4%, 6% v.lume) and Red mud (2% v.lume) as the reinforcements and Structural aluminium as the matrix. Experimental inv.stigation of wear analysis of the composites was carried out according to the L9 Taguchi method. The designated number of experiments was accomplished to probe the impact of control factors on the specific wear rate (SWR) of the dev.loped composites. ANOv. was carried out and Wt%. Reinforcement was found to be the decisiv. factor on the SWR of the dev.loped hybrid composite. The Confirmatory test was successfully carried out and the computed error was found to be v.rying from 0.878% to 2.58%.

关键词： Taguchi ANNOv. Wear Signal-to-Noise Ratio Hybrid Metal Matrix Composite