ADDITIVE MANUFACTURING (Professional Elective - II) B.Tech. IV Year I Sem JNTUH R-18

• Compare and contrast traditional prototyping methods with additive manufacturing (AM).

• Traditional Prototyping vs. Additive Manufacturing

• Describe the key advantages and limitations of AM in specific detail, providing real-world examples.

• Define and explain commonly used terms in AM, such as STL file, slicing, build envelope, and support structure.

• Draw and explain the different stages of the rapid prototyping process chain.

Unit II: Liquid-based Rapid Prototyping Systems

• Explain the working principle of Stereo lithography Apparatus (SLA), including the role of laser scanning and photopolymerization.

• Analyze the advantages and disadvantages of SLA compared to other AM processes. Provide case studies demonstrating its practical applications.

• Compare and contrast Solid Ground Curing (SGC) with SLA, highlighting their key differences in terms of process, materials, and applications.

• Describe the working principle of Fused Deposition Modeling (FDM) and explain its advantages and limitations as a versatile AM technology.

Unit III: Powder-based Rapid Prototyping Systems

• Explain the core principle of Selective Laser Sintering (SLS) and its ability to directly fuse powdered materials into functional parts.

• Analyze the advantages and disadvantages of SLS compared to other powder-based AM processes. Provide examples of its use in industries like aerospace and automotive.

• Compare and contrast Three Dimensional Printing (3DP) with SLS, focusing on their differences in material handling, build layer thickness, and applications.

• Discuss the importance of Rapid Tooling and explain how AM enables quick batch production of plastic and metal parts using indirect and direct methods.

Unit IV: Rapid Prototyping Data Formats and Software

• Analyze the significance of STL format in AM and explain the consequences of using valid and invalid tessellated models for 3D printing.

• Discuss common STL file problems and different software solutions for repair and optimization.

• Compare and contrast the features of popular RP software like Magics, Mimics, and Solid View. Provide examples of their applications in specific design workflows.

Unit V: RP Applications

• Explain the relationship between application requirements and material selection in AM.

• Discuss specific examples of how AM is used in design, engineering analysis and planning, and production for various industries.

• Analyze the impact of AM on medical and bioengineering applications, including customized implants, prostheses, and biomolecule visualization.

Bonus Questions:

• Discuss the current challenges and future trends in AM technology.

• Compare the environmental impact of AM with traditional manufacturing methods.

• Provide specific examples of how AM is being used in emerging fields like 3D bioprinting and personalized medicine.