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| 1 | 搅拌针形状对Al-Mg-Si合金搅拌摩擦焊过程中材料流动和力学性能的影响(英文)显示文摘了解搅拌摩擦焊中搅拌头几何形状对材料流动的影响对工业应用中的高质量焊接产品具有挑战性。讨论在材料流动中起重要作用的搅拌轴肩和搅拌针的最佳设计组合。采用标记插入技术对塑化材料的流动情况进行分析。结果表明,正方形和六边形的搅拌针滚花设计有利于与焊缝长度/时间相关的恒稳定力。正方形搅拌针(粘连长度最小)的轴肩滚花设计(TK)S有利于塑化材料均匀混合和分布,在搅拌针底部观察到了铜碎片。采用(TK)S搅拌头的焊缝具有较高的力学性能,材料的搅拌区强度可达182 MPa,硬度可达HV 78。 | Krishna Kishore MUGADA Kumar ADEPU | 2019 | Transactions of Nonferrous Metals Society of China2019，29，11： | 2 |
| 2 | 搅拌摩擦加工制备铝基梯度功能复合材料及表征显示文摘在6082铝板的凹槽中填充SiC颗粒(平均粒径为27.5μm),用一种新型多步搅拌摩擦加工(FSP)法制备Al/SiC梯度功能复合材料(FGM)。为了得到预先设定的梯度结构,使用3种工具进行FSP,每种工具的搅拌针长度不同,SiC颗粒的体积分数也不同。FSP在室温下进行,其工艺参数如下:1~3道次、旋转速度为900r/min、前进速度为20mm/min。利用扫描电子显微镜(SEM)和三维光学显微镜对梯度功能样品的显微组织进行表征,且测试其耐磨性和显微硬度等力学性能。结果表明,随着FSP道次的增加,SiC颗粒分散更加均匀,材料的显微硬度增加。与未加工的6082铝合金相比,经3道次加工后,其显微硬度提高51.54%。添加SiC颗粒后,Al/SiC梯度功能使复合材料的耐磨性提高。 | Venkatesh BIKKINA Sadasiva Rao TALASILA Kumar ADEPU | 2020 | Transactions of Nonferrous Metals Society of China2020，30，7： | 2 |
| 3 | Influence of tool material and rotational speed on mechanical properties of friction stir welded AZ31B magnesium alloy显示文摘In this investigation,the effect of friction stir welding(FSW)parameters such as tool material rotational speed,and welding speed on the mechanical properties of tensile strength,hardness and impact energy of magnesium alloy AZ31B was studied.The experiments were carried out as per Taguchi parametric design concepts and an L9 orthogonal array was used to study the influence of various combinations of process parameters.Statistical optimization technique,ANOVA,was used to determine the optimum levels and to find the significance of each process parameter.The results indicate that rotational speed(RS)and traverse speed(TS)are the most significant factors,followed by tool material(TM),in deciding the mechanical properties of friction stir processed magnesium alloy.In addition,mathematical models were developed to establish relationship between different process variables and mechanical properties. | Ugender Singarapu Kumar Adepu Somi Reddy Arumalle | 2015 | Journal of Magnesium and Alloys2015，3，4： | 2 |
| 4 | Facile as- sembly of two 6-membered fused N-heterocyclic rings : A rapid access to novel small molecules via Cu- mediated reaction 显示文摘 | Adepu R Rajnikanth S Meda C T | 2013 | Chem Commun2013，49，2： | 1 |
| 5 | Cascading effects of cyber-attacks on interconnected critical infrastructure显示文摘Modern critical infrastructure,such as a water treatment plant,water distribution system,and power grid,are representative of Cyber Physical Systems(CPSs)in which the physical processes are monitored and controlled in real time.One source of complexity in such systems is due to the intra-system interactions and inter-dependencies.Consequently,these systems are a potential target for attackers.When one or more of these infrastructure are attacked,the connected systems may also be affected due to potential cascading effects.In this paper,we report a study to investigate the cascading effects of cyber-attacks on two interdependent critical infrastructure namely,a Secure water treatment plant(SWaT)and a Water Distribution System(WADI). | Venkata Reddy Palleti Sridhar Adepu Vishrut Kumar Mishra Aditya Mathur | 2021 | Cybersecurity2021，4，1： | 1 |
| 6 | Heat generation model for taper cylindrical pin profile in FSW显示文摘 | Vijay Shivaji Gadakh Kumar Adepu | 2013 | Journal of Materials Research and Technology2013，，： | 1 |
| 7 | Development and evaluatioli of patient information leaflets (PIL) usefulness显示文摘 | Adepu R Swamy MK | 2012 | Indian J Pharm Sci2012，74，2： | 1 |
| 8 | Effect of copperand aluminium addition on mechanical properties and corro-sion behaviour of AISI 430 ferritic stainless steel gas tung-sten arc welds显示文摘 | Gurram M Adepu K Pinninti R R | 2013 | Journal of Materials Research and Tech-nology2013，2，3： | 1 |
| 9 | Wear and mechani- cal properties of 6061- T6 aluminum alloy surface hybrid composites fabricated by friction stir processing显示文摘 | Devaraju A Adepu K Adepu K | 2013 | J Mater Res Techn2013，2，： | 1 |
| 10 | Metaheuristics with Vector Quantization Enabled Codebook Compression Model for Secure Industrial Embedded Environment显示文摘At the present time,the Industrial Internet of Things(IIoT)has swiftly evolved and emerged,and picture data that is collected by terminal devices or IoT nodes are tied to the user's private data.The use of image sensors as an automa-tion tool for the IIoT is increasingly becoming more common.Due to the fact that this organisation transfers an enormous number of photographs at any one time,one of the most significant issues that it has is reducing the total quantity of data that is sent and,as a result,the available bandwidth,without compromising the image quality.Image compression in the sensor,on the other hand,expedites the transfer of data while simultaneously reducing bandwidth use.The traditional method of protecting sensitive data is rendered less effective in an environment dominated by IoT owing to the involvement of third parties.The image encryp-tion model provides a safe and adaptable method to protect the confidentiality of picture transformation and storage inside an IIoT system.This helps to ensure that image datasets are kept safe.The Linde–Buzo–Gray(LBG)methodology is an example of a vector quantization algorithm that is extensively used and a rela-tively new form of picture reduction known as vector quantization(VQ).As a result,the purpose of this research is to create an artificial humming bird optimi-zation approach that combines LBG-enabled codebook creation and encryption(AHBO-LBGCCE)for use in an IIoT setting.In the beginning,the AHBO-LBGCCE method used the LBG model in conjunction with the AHBO algorithm in order to construct the VQ.The Burrows-Wheeler Transform(BWT)model is used in order to accomplish codebook compression.In addition,the Blowfish algorithm is used in order to carry out the encryption procedure so that security may be attained.A comprehensive experimental investigation is carried out in order to verify the effectiveness of the proposed algorithm in comparison to other algorithms.The experimental values ensure that the suggested approach and the outcomes are examined in a variety of different perspectives in order to further enhance them. | Adepu Shravan Kumar S.Srinivasan | 2023 | Intelligent Automation & Soft Computing2023，，6： | 0 |
| 11 | A comparative evaluation of microstructural and mechanical behavior of fiber laser beam and tungsten inert gas dissimilar ultra high strength steel welds显示文摘The influence of different welding processes on the mechanical properties and the corresponding variation in the microstructural features have been investigated for the dissimilar weldments of 18% Ni maraging steel 250 and AISI 4130 steel. The weld joints are realized through two different fusion welding processes, tungsten inert arc welding(TIG) and laser beam welding(LBW), in this study. The dissimilar steel welds were characterized through optical microstructures, microhardness survey across the weldment and evaluation of tensile properties. The fiber laser beam welds have demonstrated superior mechanical properties and reduced heat affected zone as compared to the TIG weldments. | Jaiteerth R. JOSHI Mastanaiah POTTA Kumar ADEPU Ramesh Kumar KATTA Madhusudhan Reddy GANKIDI | 2016 | Defence Technology(防务技术)2016，12，6： | 0 |
| 12 | 选择性激光熔化17-4 PH不锈钢零件的参数化研究和表征显示文摘本文对选择性激光熔化的17-4 PH不锈钢进行了参数化研究和表征。通过改变工艺参数包括激光功率和扫描速度以及扫描方式(设计参数)来研究试样的相对密度和显微硬度的变化。当使用中等能量密度和内外六角扫描方式时,试样的相对密和显微硬度最大;当使用低能量密度和交替带状扫描方式时,试样的相对密和显微硬度最小。在光学和扫描电子显微组织中,试样侧面有奥氏体、铁素体和小熔池。能量色散光谱分析表明,试样的化学成分变化导致相对密度和显微硬度发生变化。X射线衍射结果表明,中等能量密度试样的奥氏体相和铁素体峰强度最高。背散射电子衍射结果表明,随着能量密度的增加,奥氏体相增加,导致试样的显微硬度变化。相比于中等能密度试样,低能量密度试样易诱发更多的残余应力。采用不同能量密度得到的样品都具有较强的耐蚀性(0.05 mm/a),未出现明显的腐蚀裂纹。 | I.KARTIKEYA SARMA N.SELVARAJ Adepu KUMAR | 2023 | Journal of Central South University2023，30，3： | 0 |
| 13 | Robust Facial Biometric Authentication System Using Pupillary Light Reflex for Liveness Detection of Facial Images显示文摘Pupil dynamics are the important characteristics of face spoofing detection.The face recognition system is one of the most used biometrics for authenticating individual identity.The main threats to the facial recognition system are different types of presentation attacks like print attacks,3D mask attacks,replay attacks,etc.The proposed model uses pupil characteristics for liveness detection during the authentication process.The pupillary light reflex is an involuntary reaction controlling the pupil’s diameter at different light intensities.The proposed framework consists of two-phase methodologies.In the first phase,the pupil’s diameter is calculated by applying stimulus(light)in one eye of the subject and calculating the constriction of the pupil size on both eyes in different video frames.The above measurement is converted into feature space using Kohn and Clynes model-defined parameters.The Support Vector Machine is used to classify legitimate subjects when the diameter change is normal(or when the eye is alive)or illegitimate subjects when there is no change or abnormal oscillations of pupil behavior due to the presence of printed photograph,video,or 3D mask of the subject in front of the camera.In the second phase,we perform the facial recognition process.Scale-invariant feature transform(SIFT)is used to find the features from the facial images,with each feature having a size of a 128-dimensional vector.These features are scale,rotation,and orientation invariant and are used for recognizing facial images.The brute force matching algorithm is used for matching features of two different images.The threshold value we considered is 0.08 for good matches.To analyze the performance of the framework,we tested our model in two Face antispoofing datasets named Replay attack datasets and CASIA-SURF datasets,which were used because they contain the videos of the subjects in each sample having three modalities(RGB,IR,Depth).The CASIA-SURF datasets showed an 89.9%Equal Error Rate,while the Replay Attack datasets showed a 92.1%Equal Error Rate. | Puja S.Prasad Adepu Sree Lakshmi Sandeep Kautish Simar Preet Singh Rajesh Kumar Shrivastava Abdulaziz S.Almazyad Hossam M.Zawbaa Ali Wagdy Mohamed | 2024 | Computer Modeling in Engineering & Sciences2024，139，4： | 0 |
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