Digital Light Processing (DLP) - Relationship Between Organic Designs And Topology Optimization - IT Assignment Help

Assignment Task

Questions -1

Digital Light Processing (DLP)

• Digital Light Processing (DLP) is generally faster than its counterpart, SLA, as it cures a large area of the photopolymer layer at once. 
• High buy-to-fly ratios imply high degrees of material wastage during manufacturing, typically observed when complex part designs are fabricated using subtractive processes. 
• Nitrogen and argon are commonly used gases in powder bed metal AM processes to displace oxygen from the build chamber. 
• The Stereolithography Apparatus (SLA) was the first AM technology to be granted a US patent in the early 1980's. STL files carry a single string of color information that applies for the entire model, while AMF files enable the attribution of colors to individual vertices, triangles, volumes, objects, or materials. Electron Beam Melting (EBM) uses the energy of a beam of electrons to selectively melt and fuse conductive materials originally in powder form. 
• From a design perspective, hierarchical complexity refers to the ability of AM processes to simultaneously control a part's nano/microstructure, mesostructure, and macrostructure. The first AM systems commercialized in the United States targeted household markets and were limited to processing polymers. The STL of a cube positioned flat with the XY plane will generate 4 trigger points when sliced anywhere between its top and bottom faces. 
• Loose powders are highly ignitable and explosive in environments deprived of oxygen.

Question B 

What is the relationship between organic designs and topology optimization? Be brief

Question C

Identify one AM process that best fits the characteristic given in each table below, then present a corresponding disadvantage of that same process. Be specific and justify (discuss) your choice; i.e. listing a disadvantage such as "machines are expensive" is too subjective and you can do better! 

APPLIES INKJET TECHNOLOGY TO DEPOSIT PHOTOSENSITIVE RESINS 

1-What process? 

2-What is one disadvantage of this process? 

USES A POWERFUL LASER TO SINTER OR MELT METAL POWDER 

1-What process? 

2-What is one disadvantage of this process? 

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