The electronic, optical, structural, elastic, and mechanical properties of cubic Strontium Hafnium Oxide SrHfO3 under variable stress conditions were examined using the Generalized Gradient Approximation (GGA) method. Density functional theory was employed to determine influence on electronic oxide perovskite, resulting in changes band gap 3.206–2.834 eV, partial density states, total states. Significant variations various optical properties, including absorption, conductivity, reflectivity,...

Prosthetic arms are designed to assist amputated individuals in the performance of activities daily life. Brain machine interfaces currently employed enhance accuracy as well number control commands for upper limb prostheses. However, motion prediction prosthetic and rehabilitation amputees suffering from transhumeral amputations is limited. In this paper, functional near-infrared spectroscopy (fNIRS)-based approach recognition human intention six motions proposed. The data were extracted...

The parallel manipulators are skilled for their precision manufacturing but need optimized design to get maximum dexterity that will lead towards better industrial production rates. 3-DOF tricept is chosen utilize its capabilities functionality. Three performance parameters conditioning index, workspace volume, and global index used obtain optimum variables of mechanism. With a view compare them in terms processing effort, particle swarm optimization (PSO) applied here. Finally,...

Selective laser melting (SLM), a metal powder fusion additive manufacturing process, has the potential to manufacture complex components for aerospace and biomedical implants. Large-scale adaptation of these technologies is hampered due presence defects such as porosity part distortion. Nonuniform melt pool size major cause defects. The changes heat from previous bed tracks. In this work, effect sourced neighbouring tracks was modelled feedback control designed. objective regulate...

The generation and use of energy are significant contributors to CO2 emissions. Globally, approximately 30% 40% all consumption can be directly or indirectly linked buildings. Nearly half usage in buildings is maintaining the thermal comfort inhabitants. Therefore, finding solutions that not only technically but also economically feasible utmost importance. Though much research has been conducted address this issue, most still costly for developing countries implement practically. This study...

This paper presents the design and optimization process of a Virtual Biomechanical Shoulder Robot Model (VBSRM) based on 6-4 parallel mechanism. To address challenges posed by manipulators specific biomechanical constraints shoulder joint, comprehensive analysis is conducted. First, kinematic model VBSRM developed, followed an investigation its geometric model. obtain optimal design, performance objectives such as condition number, norm actuator force, stiffness are identified optimized....

This paper presents an efficient control scheme for compliant motion of kinematically redundant manipulators and its evaluation using experimental 7 degrees-of-freedom manipulator, REDIESTRO (a dexterous isotropically enhanced, seven turning-pair robot). An inverse Jacobian based hybrid impedance (IJ-HIC) is proposed that provides a unified approach combining control, redundancy resolution, user defined secondary tasks in single methodology. The IJ-HIC uses the manipulator together with PD...

Trajectory planning and tracking are the most important aspects of mobile robot research for industrial application. In this research, an intelligent hybrid control is presented to enhance usability robots in environments cluttered with static obstacles. The two ways. On one hand, algorithm combines obstacles avoidance trajectory generation. generated acts as a reference path be followed by robot. other not only generates but also tracks trajectory. An optimization-based algorithm, simulated...

The process of material removal from a workpiece to obtain the desired shape is termed machining. Present-day technologies have high spindle speeds and thus allow quick removal. These high-speed spindles are highly exposed vibrations and, as result, accuracy final workpiece’s dimensions compromised. To overcome this problem, motion tool restricted, multiple degrees freedom given through in different axes. A machining bed configured parallel manipulator capable giving six (DOF) proposed...

The rise in energy requirements and its shortfall developing countries have affected socioeconomic life. Communities remote mountainous regions Asia are among the most by deprivation. This study presents feasibility of an alternate strategy supplying clean to areas consisting pristine mountains forest terrain. Southeast has a much-diversified landscape varied natural resources, including abundant water resources. current is motivated this supply streams which provides excellent environment...

Process of material removal from work piece to get desired shape is usually termed as machining. Operations such milling, drilling and turning are categorized Current spindle techniques allow quick removal. Performance envelope limited in case for higher spindles. The high speed tools also vulnerable external internal vibrations. Cuts made parts created existence these vibrations will result dimensional inaccuracy imprecise measurements. A solution problems restrict the tool motion a single...

Machining is a process in which raw material cut into desired shape and size using different removal processes. The accuracy precision of workpiece effected by present day high speed spindle technologies. To deal with such problem it proposed to replace current machining techniques 6 DOF bed gives motion six degrees whereas the tool remains static. An issue beds workspace due limitation its joints movement this should be known. This paper presents an algorithm for determination beds....

Machining is a process in which raw material transformed into desired shape and size by using different operations. Technologies used modern day industries allow the to remove very quickly as result of high spindle speeds. These speed spindles are vulnerable internal external vibrations. Due vibrations, accuracy precision work piece compromised. To tackle this problem decrease degree freedom tool desired. Hence, we propose six machining bed. The be machined will placed on bed remain static....

Machining is material removal from a workpiece. Current spindle technologies allow the to be removed very quickly but unfortunately this compromises accuracy of desired machined trajectory on Proposed solution problem restricting motion tool and giving rotation This paper presents analysis workpiece, such that workpiece rotates with six degrees freedom, in presence error generated due an offset centre moving platform machining bed. The kinematics bed is, therefore, modeled using as inverse...

Functional metal parts with complicated geometry and internal features for the aerospace automotive industries can be created using laser powder bed fusion additive manufacturing (AM) technique. However, lack of uniform quality produced in terms strength limits its enormous potential general adoption industries. Most defects selective melting (SLM) are associated a nonuniform melt pool size. The area may fluctuate spite constant SLM processing parameters, like power, speed, hatching...