Erosion model for abrasive water jet machining of composite materials
参考中译:磨料水射流加工复合材料的冲蚀模型


          

刊名：Journal of the Brazilian Society of Mechanical Sciences and Engineering
作者：Dhanawade, Ajit（BS Coll Engn & Res）
Wazarkar, Seema（Thapar Inst Engn & Technol）
Kumar, Shailendra（Sardar Vallabhbhai Natl Inst Technol）
刊号：780PC001
ISSN：1678-5878
出版年：2022
年卷期：2022, vol.44, no.7
页码：268
总页数：16
分类号：TH11
关键词：Abrasive water jet machining；Erosion；Composite material；Erosion model；Dimensional analysis technique；Machining parameters；CUTTING PERFORMANCE；SURFACE-ROUGHNESS；ALUMINA CERAMICS；CARBON；OPTIMIZATION；HOLE；PREDICTION；PARAMETERS；IMPACT；GLASS
参考中译：磨料水射流加工；冲蚀；复合材料；冲蚀模型；量纲分析技术；加工参数；切割性能；表面粗糙度；氧化铝陶瓷；碳；优化；孔；预测；参数；冲击；玻璃
语种：eng
文摘：This paper describes study of abrasive particle impingement in abrasive water jet machining of carbon fiber-reinforced polymer. A mathematical model is derived through a hybrid approach for erosion of material during machining to predict depth of jet penetration on the basis of abrasive impingement results and dimensional analysis. The depth of cut, i.e., jet penetration, is examined by machining non-through straight slit cuts on carbon fiber epoxy resin composite workpiece. Machining parameters precisely abrasive flow rate, jet pressure and traverse rate are observed as substantial factors to control jet penetration. It is observed that the increase in the jet pressure and abrasive flow rate results in the increase in the depth of jet penetration. But the decrease in traverse rate results in the increase in the depth of jet penetration. The defects including delamination, fiber pullout, fiber and matrix washout and abrasive embedment are also studied. These defects are prominent in samples machined under low pressure and high traverse rate. In the present study, an attempt is made to study and analyze physics behind abrasive impingement during machining. Therefore, abrasive particle velocity is studied quantum mechanically. A mathematical model in general form is developed on the basis of abrasive impingement, quantum mechanical study for abrasive energy and dimensional analysis technique. The experimental results and model results are in good agreement with each other. Validation experiments confirm the adequacy of the model. The model is efficiently applicable to AWJM of any layered composite material.
参考中译：本文对磨料水射流加工碳纤维增强聚合物中的磨粒冲击进行了研究。在磨料冲击结果和量纲分析的基础上，通过加工过程中材料磨损的混合方法建立了预测射流侵彻深度的数学模型。通过对碳纤维-环氧树脂复合材料工件进行非直缝切割，检测了切割深度，即射流穿透深度。精确的加工参数、磨料流量、射流压力和横移速率是控制射流穿透的重要因素。实验结果表明，射流压力和磨料流量的增加会导致射流穿透深度的增加。但穿透速度的减小会导致射流侵彻深度的增加。并对分层、纤维拔出、纤维与基质冲刷、磨料嵌入等缺陷进行了研究。这些缺陷在低压和高加工速度下加工的样品中尤为突出。在本研究中，试图研究和分析机械加工过程中磨粒碰撞背后的物理现象。因此，对磨粒速度进行了量子力学研究。在磨料撞击、磨料能量的量子力学研究和量纲分析技术的基础上，建立了一般形式的数学模型。实验结果与模型结果吻合较好。验证实验证实了该模型的充分性。该模型适用于任何层状复合材料的AWJM。



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