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基于Taguchi的FSW参数的优化,以促进航空航天材料的发展:Al-Li 2060合金
Noah E El-Zathry1,2, Stephen Akinlabi1, Wai Lok Woo1
1Department of Mechanical and Construction Engineering, Northumbria University, Newcastle Upon Tyne, NE1 8ST, United Kingdom.
Heliyon
|January 6, 2025
概括
- (Al-Li) 2060合金的摩擦接 (FSW) 使用机器人手臂进行了优化. 该研究确定了用于航空航天应用中增强接质量和机械性能的关键参数.
科学领域:
- 材料科学 材料科学 材料科学
- 制造业 工程 制造工程
- 航空航天工程 航空航天工程
背景情况:
- - (Al-Li) 2060合金是飞机结构的关键第三代材料.
- 摩擦接 (FSW) 是先进合金的关键连接技术.
研究的目的:
- 研究FSW参数对Al-Li 2060合金微观结构,机械性能和表面完整性的影响.
- 为了优化FSW过程参数,为具有优越关节强度的无缺陷接.
主要方法:
- 使用5轴机器人臂进行4毫米厚的Al-Li 2060-T8E30板的摩擦接 (FSW).
- 采用Taguchi L9直角阵列来系统地改变旋转速度 (800-1600rpm),横向速度 (2-4 mm/s) 和轴向力 (4-6 kN).
- 分析了接接头的微结构演变,机械性能 (微硬度) 和表面粗性.
主要成果:
- 旋转速度被确定为影响接质量的最关键参数,其次是轴向力和横向速度.
- 最佳的FSW条件 (5 kN轴力,1200rpm旋转速度,3 mm/s横速) 产生了无缺陷接,最大区微硬度为128.77 HV.
- 没有缺陷的样品获得了精细的表面表面,平均粗度为3.05微米和3.536微米.
结论:
- 精确控制FSW参数对于提高Al-Li合金的联合强度和接质量至关重要.
- 优化的FSW过程参数为航空航天和汽车行业的部件制造提供了改进的途径.
- 这项研究有助于在苛刻的结构应用中有效利用先进的Al-Li合金.
相关概念视频
01:18Stress Concentrations in Circular Shafts
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Consider the elastic torsion formula, which applies to a circular shaft with a consistent cross-section. This formula assumes that the shaft's ends are loaded with rigid plates firmly attached. However, in many cases, torques are applied to the shaft through mechanisms like flange couplings or gears, which are connected by keys inserted into keyways. This application method modifies the stress distribution near the point of torque application, causing it to deviate from the distributions...
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01:15Thin-Walled Hollow Shafts
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In analyzing a thin-walled hollow shaft subjected to torsional loading, a segment with width dx is isolated for examination. Despite its equilibrium state, this segment faces torsional shearing forces at its ends. These forces are quantitatively described by the product of the longitudinal shearing stress on the segment's minor surface and the area of this surface, leading to the concept of shear flow. This shear flow is consistent throughout the structure, indicating a uniform distribution...
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01:07Unsymmetric Loading of Thin-Walled Members: Problem Solving
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The shear center of a channel section with uniform thickness, height, and width, is determined by computing the shear force in the member and calculating the moments of inertia of the sections.
To compute the shear forces, find the shear flow at a specific distance from the endpoint using the vertical shear and the moment of inertia values. The total shear force on the flange is calculated by integrating the shear flow from one end of the flange to the other.
Next, calculate the moments of...
To compute the shear forces, find the shear flow at a specific distance from the endpoint using the vertical shear and the moment of inertia values. The total shear force on the flange is calculated by integrating the shear flow from one end of the flange to the other.
Next, calculate the moments of...
79