Fundamentals of Wire Arc Additive Manufacturing Processes II — Lesson 2

This lesson covers the intricacies of additive manufacturing, focusing on common defects, process planning, and path planning strategies. It delves into defects like porosity, cracking, delamination, and residual stress, explaining how they can affect the accuracy and quality of the final product. The lesson also discusses the importance of proper process planning in additive manufacturing, touching on aspects like part orientation, slicing strategies, and path planning. For instance, it explains how different path planning strategies like raster, zigzag, contour, spiral, and hybrid paths can influence the surface roughness and dimensional precision of the deposited components. The lesson provides a comprehensive understanding of the additive manufacturing process, making it ideal for those interested in this field.

Video Highlights

01:19 - Analyzing defects for accuracy and quality of the component
05:17 - Explanation of solidification cracking and grain boundary cracking
10:50 - Importance of process planning in additive manufacturing
21:42 - Different path planning strategies

Key Takeaways

- Understanding common defects in additive manufacturing is crucial as they can impact the accuracy and quality of the final product.
- Proper process planning, including part orientation and slicing strategies, is essential in additive manufacturing.
- Different path planning strategies can influence the surface roughness and dimensional precision of the deposited components.
- Not all path planning strategies are suitable for all types of additive manufacturing processes; the strategy should be chosen based on the specific requirements of the process.