钻井参数和工具几何学对航空航天等级合板复合材料的推力和表面粗度的影响
Çağın Bolat1, Uçan Karakılınç2, Bekir Yalçın3
1Department of Mechanical Engineering, Faculty of Engineering, Samsun University, 55420 Samsun, Turkey.
Micromachines
|July 29, 2023
概括
优化碳纤维增强塑料 (CFRP) 的钻孔包括控制切割速度,料率和钻孔类型. 较低的推力和更好的表面质量减少了分层,提高了飞机组件的完整性.
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:
- 碳纤维增强塑料 (CFRP) 为航空航天应用提供优越的强度与重量比.
- 钻孔CFRP带来了诸如表面粗和分层等挑战,损害了关节的完整性.
- 优化钻井参数对于可靠的CFRP组件制造至关重要.
研究的目的:
- 在各种参数和切削工具下调查CFRP的钻孔特性.
- 分析切割速度,料率,钻孔直径和钻孔类型对钻孔性能的影响.
- 为了确定最佳的钻井条件,尽量减少推力,表面粗和分层.
主要方法:
- 利用了塔古奇直角阵列设计 (L18) 进行系统的实验.
- 多种切割速度 (15-45 m/min),料速度 (0.05-0.2 mm/rev),以及钻孔直径 (3-5 mm).
- 采用了两台扭转钻机 (138°,120°点角) 和一台螺杆钻机;测量了推力,表面粗度和分层.
主要成果:
- 低切割速度,高料率和小钻孔直径增加了推力.
- 表面粗度随着工具直径的增加和料/切割速度的降低而降低.
- 随着推力减小,分层因素减少,与改善的表面质量相关.
结论:
- CFRP的钻孔质量受到钻机和更大的点角的负面影响.
- 确定了最佳条件:45 m/min切割速度,0.05 mm/rev料,5 mm直径钻头 (试验 12) 和30 m/min,0.05 mm/rev,3 mm钻头 (试验 2).
- 通过在CFRP钻井过程中提高表面质量,可以实现控制分层.
更多相关视频
07:53Cutting Procedures, Tensile Testing, and Ageing of Flexible Unidirectional Composite Laminates
Published on: April 27, 2019
8.3K
09:41Magnet Assisted Composite Manufacturing: A Flexible New Technique for Achieving High Consolidation Pressure in Vacuum Bag/Lay-Up Processes
Published on: May 17, 2018
13.5K
相关概念视频
Frictional Forces on Screws
1.2K
Screws are characterized by a helical ridge known as a thread wrapped around a cylindrical shaft. They are commonly used as fasteners to hold objects together or to transmit power and motion in machines. One type of screw that is particularly useful for transmitting power is the square-threaded screw.
A jack with a square-threaded screw is a mechanical device used to lift heavy loads by applying a force at its handle. When the force is applied, the screw turns, raising the load. The screw can...
A jack with a square-threaded screw is a mechanical device used to lift heavy loads by applying a force at its handle. When the force is applied, the screw turns, raising the load. The screw can...
1.2K
Residual Stresses in Circular Shafts
196
In materials that exhibit elastic and plastic behavior, known as elastoplastic materials, residual stresses can accumulate when these materials experience plastic deformation. This deformation arises from either high levels of shearing stress or significant strains. Residual stresses are internal stresses that persist within a material after removing the external force causing deformation. This phenomenon is demonstrated when observing the behavior of a shaft under torque; notably, the...
196
Wood Surfacing
114
Wood surfacing is a critical finishing process designed to smoothen the wood surface, enhance its dimensional accuracy, and make handling safer. This process compensates for potential shrinkage during the seasoning phase by marginally increasing the wood dimensions before surfacing. It also helps correct some distortions that may occur as the wood dries.
The equipment used in the surfacing process is a plane equipped with rotating blades. This tool efficiently smoothens the wood surface and can...
The equipment used in the surfacing process is a plane equipped with rotating blades. This tool efficiently smoothens the wood surface and can...
114
Thin-Walled Hollow Shafts
214
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...
214
