Material microstructure and surface considerations in microforming of sheet materials

在电子、计算机、医疗器械和汽车制造等许多不同的工业部门，微型零部件的制造变得更加重要和必要。传统上，这些精密机械零件是通过机械加工制造的。净成形或近净成形工艺，如板材成形工艺，由于生产率高、成本高，往往更适合小型化。这项研究涉及微弯、微拉弯和深拉深、微剪切等微成形新工艺的开发，以及它们在燃料电池堆金属双极板复杂微特征创新制造中的应用。通过在较大零件内形成微零件和微特征，将在微观尺度上对大变形的力学有一个更广泛和基本的理解。

The manufacturing of micro-parts has become more important and necessary in many different industrial sectors such as electronics, computers, medical devices and automotive manufacturing. Traditionally these precision mechanical parts are fabricated by machining. The net shape or near net shape processes, such as sheet metal forming processes, are often better suited for miniaturization because of high productivity and cost. The proposed research deals with development of novel micro-forming processes of microbending, micro-draw-bending and deep drawing, micro-shearing and their combined application towards innovative manufacturing of complex micro-features within metallic bipolar plates used in fuel cell stacks. A broader and fundamental understanding of the mechanics of large deformation at the micro-scale will be gained in forming of micro-parts and micro-features within larger parts.