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Additive Manufacturing Seminar

Additive Manufacturing, or 3D printing, is a layer-by-layer process for creating objects from digital models, revolutionizing manufacturing and prototyping. It has evolved since the 1980s, with various processes and materials now available, including polymers, metals, and bioprinting. Despite its advantages like complex geometries and customization, challenges such as production speed and material limitations persist, with ongoing trends toward sustainability and integration with Industry 4.0.

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9 views20 pages

Additive Manufacturing Seminar

Additive Manufacturing, or 3D printing, is a layer-by-layer process for creating objects from digital models, revolutionizing manufacturing and prototyping. It has evolved since the 1980s, with various processes and materials now available, including polymers, metals, and bioprinting. Despite its advantages like complex geometries and customization, challenges such as production speed and material limitations persist, with ongoing trends toward sustainability and integration with Industry 4.0.

Uploaded by

as380187
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as PDF, TXT or read online on Scribd
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Additive Manufacturing (3D Printing)

• Seminar Presentation
• Prepared for Academic/Research Context
Introduction
• Definition: Process of creating 3D objects layer by layer from digital models
• Also known as 3D printing
• Disruptive technology in manufacturing, prototyping, and research
History & Evolution
• 1980s: First patents in stereolithography (SLA)
• 1990s: Selective Laser Sintering (SLS) and FDM
• 2000s–present: Metals, bioprinting, construction, and multi-material printing
Principles of Additive Manufacturing
• Layer-by-layer fabrication from CAD model
• Requires digital slicing of model
• Post-processing may include curing, sintering, polishing, or machining
Classification of AM Processes
• Material Extrusion (FDM)
• Vat Photopolymerization (SLA, DLP)
• Powder Bed Fusion (SLS, DMLS, EBM)
• Material Jetting, Binder Jetting
• Directed Energy Deposition (DED)
Materials Used in AM
• Polymers: PLA, ABS, Nylon
• Metals: Titanium, Aluminum, Stainless Steel
• Ceramics and composites
• Biomaterials for tissue engineering
Fused Deposition Modeling (FDM)
• Most common, low-cost process
• Thermoplastic filament extruded layer by layer
• Used for prototyping and functional parts
Stereolithography (SLA)
• First 3D printing technology
• UV laser cures liquid photopolymer resin
• High accuracy, smooth finish, but brittle materials
SLS & DMLS
• Selective Laser Sintering (SLS) for polymers
• Direct Metal Laser Sintering (DMLS) for metals
• High strength, complex geometries, industrial use
Electron Beam Melting (EBM)
• Powder bed fusion using electron beam
• High-performance metal parts (aerospace, medical implants)
• Requires vacuum environment
Workflow of Additive Manufacturing
• Step 1: CAD Model Design
• Step 2: Slicing software (STL format)
• Step 3: Printing layer by layer
• Step 4: Post-processing
Advantages of AM
• Complex geometries possible
• Rapid prototyping and customization
• Material efficiency
• Reduced tooling costs
Limitations & Challenges
• Slower production speed for mass manufacturing
• Limited materials
• Surface finish & mechanical properties
• High cost for industrial machines
Applications: Aerospace
• Lightweight structural components
• Fuel nozzles (GE Aviation)
• Satellite parts
Applications: Automotive
• Rapid prototyping
• Tooling and jigs
• Lightweight metal components (Formula 1, BMW, Ford)
Applications: Healthcare
• Custom prosthetics and implants
• Bioprinting (tissues, organs research)
• Dental aligners and crowns
Applications: Construction & Consumer Products
• 3D printed houses and concrete structures
• Footwear, eyewear, and jewelry
• Customized consumer products
Current Trends
• 4D printing (time-responsive materials)
• Multi-material and hybrid manufacturing
• Nano-additive manufacturing
• AI-driven design optimization
Sustainability & Environmental Impact
• Reduced waste compared to subtractive manufacturing
• Use of recycled materials
• Energy consumption challenges
Conclusion
• Additive Manufacturing is transforming industries
• Enables innovation, customization, and efficiency
• Challenges remain in scalability and cost
• Future: integration with Industry 4.0

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