Solid Particle Erosion Effects on Surface Plastic Deformation of Alüminum Alloy

In this study, a wearable upper limb robot arm design has been designed for individuals who experience discomfort in the arm muscle and experience power loss. The user with arm discomfort can attach the designed system to her arm and perform daily life activities like healthy individuals. The upper limb robot arm system is designed in Solidworks program. The system is attached to the waist of the user and wraps the entire arm. The designed robot arm system is designed to be produced of 5 cm thick aluminum material. Angular servo motors are mounted from the joints to the wrists and elbows. The linear motor is mounted to the shoulder part of the upper limb system to provide both vertical and horizontal movement. Necessary analyses were done for the mechanism designed with the help of Solidworks software. The safety coefficients of the arm, hand, and shoulder apparatuses were calculated for a maximum load of 250 N. Later, restrictions were made for the necessary movements and the powers and torque values of the motors to be used were calculated. Also, maximum displacements were determined by making force distributions for the arm, hand, and shoulder parts of the system.

Section: Robot Arm Designmentioning

confidence: 99%

Üst Uzuv Robot Kol Sistemi Tasarımı ve Kinematik Analizi

Ersin¹,

Yaz²,

Gökçe³

2020

“…The cocktail effect in HEAs means that alloy properties can be largely adjusted by changing the composition and adding different alloy elements. One of them Aluminium (Al) alloys is materials of choice in many engineering applications [35,36]. Figure 7 presents the changes in hardness, lattice structure and lattice constants that occurred by changing the aluminium (Al) content in CuCrCuNiAl X Fe HEAs.…”

Section: Cocktail Effectmentioning

confidence: 99%

Yüksek Entropili Alaşımlar: üretimi, özellikleri ve kullanım alanları

Özkan¹,

Karaoğlanli²

2020

High entropy alloys (HEA) are composed of elements with atomic concentrations between 5% and 35%, unlike conventional alloys. This new generation of metallic materials has found utilization areas in many engineering applications due to their remarkable properties. High entropy effect, lattice distortion effect, sluggish diffusion effect, and cocktail effect are what give HEAs their properties. In addition to the mentioned effects, basic information regarding the definition, properties, production methods, utilization areas and recent studies of HEAs are given in this study. Furthermore, the recent developments in related areas such as the production of HEAs designed according to the targeted superior characteristics, transfer of outputs to applicable technologic fields, making the advantages of their superior features available in specific application areas such as military, defense and aerospace systems, were presented.

“…Besides, it is an advantage to have the ability to form aluminum-based composites using a wide variation of strengthens materials of different structures. The purpose of using reinforcing materials to produce Al-composites is to maximize the mechanical properties of aluminum by improving particular properties such as hardness, wear-resistance and strength [1][2][3].Overall, many works have noticed that abrasives and composites show better wear resistance than unreinforced alloys for sliding towards metals and abrasives. Also, under various wear situations, particle-reinforced composites fulfill better than the fiber-reinforced composites [4].Elements reinforced to Metal Matrix Composites [5]can improve their mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

AL2024 Kompozitlerin Aşınma Karakteristiği

Ergül¹

2020

Composite materials have high specific strength and modulus of elasticity compared to traditional materials, thus, over the past 10-20 years, the demand for these kinds of materials has increased significantly due to their specific properties. This means, the weight of the machine component produced from these materials can be reduced. In this study, the mold casting method was used in the production of Al 2024 matrix composite materials. In sample production, 50% MgO and 50% MWCNT are mixed by weight and added to the matrix material in the ratio of 0.2% -0.5% -1% -2%. The hardness and wear behaviors of Al 2024 composites with MgO / MWCNT additive were investigated using Rockwell tester and a ball-on-disc wear tester. The effects of composite materials on the wear properties have been investigated by determining the wear weight loss. 5N load and 250 m distance were chosen as the wear test parameters and percent wear amounts of the samples were examined. It was observed that hardness values of samples increased, and the wear percentage of specimens decreased with the addition of reinforcement. The best ratio for the composite design is the mixing of 50 wt.% + MgO 50 wt.% CNT with 1 wt.%.