Modeling and validation of constructive and destructive solid particle erosion processes

建设性和破坏性固体颗粒侵蚀过程的建模和验证

• 批准号: RGPIN-2019-04633
• 负责人: Papini, Marcello
• 金额: $ 5.54万
• 依托单位: Ryerson University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2021
• 资助国家: 加拿大
• 起止时间: 2021-01-01 至 2022-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=737755
• 关键词: Modeling; validation; constructive; destructive; solid

Multiple impacts of small high speed solid particles can cause surfaces to wear away in a process known as solid particle erosion (SPE). Destructive SPE occurs in the many industrial processes where particulates are carried by a gas or liquid to impact components such as turbine blades, cyclones, ducts, pipelines, pumps, valves, etc. SPE can also be constructive, such as when abrasive particle jets are used to machine surfaces or remove coatings and contaminants. The proposed research will develop new models that can be used to predict SPE for both constructive and destructive applications. The models we develop will be used to improve the wear resistance of particle reinforced, polymer matrix composites (PRPMCs), i.e., materials that contain both a polymer matrix and ceramic reinforcement particles. PRPMCs are used as protect a wide variety of components in industry. For example, they can be applied to components impacted by fly ash during the treatment of flue gases from combustion processes, or to protect wind turbine blades. Similar materials are also used as lightweight armours for military vehicles. The models will also be used to predict the shape of fins and pillars that can be rapidly and efficiently machined into metals using abrasive waterjet (AWJM) and slurry jet micro-machining  (ASJM). Such fins and pillars can be used in heat sinks used to cool micro-electronic devices. We will also develop ways that they can be used as micro-molds to mass produce microfluidic devices. Such devices employ micro-channels to mix or separate fluids, or to sort different types of cells suspended in the fluids in a variety of bio-analytical applications. The next generation of these devices will be 3D, with channels at different depths, and AWJM and ASJM are uniquely suited to allow the machining of such features. Finally, the models will be used to allow ASJM of novel microfluidic devices on rods. The channels in microfluidic devices are normally etched into flat plates. This limits the length of the channels, and thus the amount of time the fluid mixing, separation, or cell sorting can occur. Micro-machining tightly packed helical channels on thin rods would result in much longer channels for the same device footprint, thus greatly increasing device efficiency. However, traditional cutting tools cannot be used to machine thin rods without bending or fracturing them, and chemical etching based methods are difficult to use because of the difficulty in making stencil masks to define the channels. ASJM, however, can directly machine the rods, without fracturing or bending them. Overall, the models will allow new types of erosion resistant materials to be made, thus reducing costs associated with shutdowns to repair worn components at Canadian industrial plants. They will also allow new types of 3D and rod-based devices to be made for start-up companies in the growing Canadian micro-technology sector.

小型高速固体颗粒的多种影响会导致表面在称为固体颗粒侵蚀（SPE）的过程中磨损。破坏性SPE发生在许多工业过程中，在许多工业过程中，气体或液体将组件携带以影响诸如涡轮叶片，旋风，管道，管道，管道，泵，阀，阀，阀等组件。拟议的研究将开发可用于预测建设性和破坏性应用的SPE的新模型。我们开发的模型将用于改善颗粒增强的聚合物基质组件（PRPMC）的耐磨性，即既包含聚合物基质和陶瓷钢筋颗粒的材料。 PRPMC被用作保护工业中各种组成部分。例如，它们可以应用于在混合过程中处理烟气气体期间受粉煤灰影响的成分，或者以保护风力涡轮机叶片。类似的材料也被用作军用车辆的轻质装甲。这些模型还将用于预测鳍和支柱的形状，这些形状可以快速有效地使用磨料水夹（AWJM）和泥浆喷气式微型机械加工（ASJM）将金属加工成金属。这样的鳍和支柱可用于冷却微电动设备的散热器。我们还将开发它们可以用作质量生产的微流体设备的微型矿物的方法。此类设备采用微通道混合或分离流体，或将悬浮在多种生物分析应用中的流体中的不同类型的细胞分类。这些设备的下一代将是3D，频道处于不同的深度，AWJM和ASJM非常适合允许加工此类功能。最后，这些模型将用于允许杆上的新型微流体设备的ASJM。微流体设备中的通道通常蚀刻成平板。这限制了通道的长度，因此可能会发生流体混合，分离或细胞排序的时间。薄棒上的微型杂项杂音通道会导致相同设备足迹的更长通道，从而提高了设备​​效率。但是，传统的切割工具不能在不弯曲或裂缝的情况下用来加工细杆，并且基于化学蚀刻的方法难以使用，因为很难制作模具口罩来定义通道。但是，ASJM可以直接加工杆，而无需折断或弯曲。总体而言，这些模型将允许制造新型的抗侵蚀材料，从而降低与加拿大工厂修复磨损组件的关闭相关的成本。他们还将允许在不断发展的加拿大微技术领域的初创公司制作新型的3D和Rod设备。