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: 2019
• 资助国家: 加拿大
• 起止时间: 2019-01-01 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=691982
• 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次撞击会导致表面磨损，这一过程被称为固体颗粒侵蚀（SPE）。破坏性固相SPE发生在许多工业过程中，其中颗粒由气体或液体携带，影响涡轮叶片，旋风，管道，管道，泵，阀门等部件。SPE也可以是建设性的，例如当研磨颗粒射流用于加工表面或去除涂层和污染物时。提出的研究将开发新的模型，可用于预测建设性和破坏性应用的SPE。******我们开发的模型将用于提高颗粒增强聚合物基复合材料（PRPMCs）的耐磨性，即同时包含聚合物基体和陶瓷增强颗粒的材料。prpmc在工业中用于保护各种各样的部件。例如，它们可应用于燃烧过程中烟气处理过程中受飞灰影响的部件，或用于保护风力涡轮机叶片。类似的材料也被用作军用车辆的轻型装甲。******这些模型还将用于预测鳍和柱的形状，这些鳍和柱可以使用磨料水射流（AWJM）和泥浆射流微加工（ASJM）快速有效地加工成金属。这种翅片和柱子可以用于冷却微电子设备的散热器。我们还将开发将它们用作微模具以大规模生产微流体装置的方法。这种装置采用微通道来混合或分离流体，或在各种生物分析应用中对悬浮在流体中的不同类型的细胞进行分类。下一代这些设备将是3D的，具有不同深度的通道，AWJM和ASJM是唯一适合加工这些特征的设备。******最后，这些模型将用于允许新型微流体装置在棒上的ASJM。微流控装置中的通道通常蚀刻在平板上。这限制了通道的长度，从而限制了流体混合、分离或细胞分选可能发生的时间。在细杆上进行紧密排列的螺旋通道的微加工将导致相同器件占地面积的更长的通道，从而大大提高器件效率。然而，传统的切割工具无法在不弯曲或断裂的情况下加工细棒，并且由于难以制作模板来定义通道，因此难以使用基于化学蚀刻的方法。然而，ASJM可以直接加工棒材，而不会使其断裂或弯曲。******总的来说，这些模型将允许制造新型抗侵蚀材料，从而降低与加拿大工业工厂关闭维修磨损部件相关的成本。他们还将允许为正在发展的加拿大微型技术领域的初创公司制造新型3D和基于杆的设备。*****