Topics

 

I. Overview of AM (1 hr)

Additive Manufacturing (AM), also known as 3D Printing, 3DP) is a potent collection of manufacturing processes. They are economically applicable for certain types of manufactured goods and production runs. This overview will describe the rationale for using AM instead of a conventional manufacturing process for a given manufacturing run. Examples of broad application areas based on this rationale will be presented.

A. Application inroads

B. Current market size

C. Criteria for using AM

 

II. Overview of AM Processes (4 hr)

This presentation gives a description of the seven ASTM categories of AM processes. The manufacturing advantages and disadvantages will be discussed.

A. Review/description of the 7 ASTM categories of AM processes

 

III. The History of AM (1 hr)

Society has become aware of AM in the last 2-3 years, but the technology as a whole is almost 30 years old. The history of AM will be given from the viewpoint of the patent literature. Prior to active AM processing are AM precursors and AM prehistory. Precursors are AM technologies that were developed in the 1960s-70s before all the technical infrastructure was in place; thus, these technologies were not feasible for embodiment as commercial manufacturing equipment. AM prehistory dates back almost 150 years to two broad areas: layered manufacturing and photosculpture.

A. Roots of AM in lithography and photosculpture

B. AM precursors

C. Modern AM Processes

D. An historical perspective from the US patent literature

 

IV. Materials for AM (2 hr)

Not every material can be printed on any AM equipment. Feedstocks must be shaped into the proper form to be processable on a specific piece of AM equipment. It must be amenable to required post-processing, and it must have acceptable service properties and metrology. This presentation reviews the commercial materials available for AM (polymers, metals, ceramics, composites) for each of the major AM technologies. AM service microstructure and properties will be presented and compared to those obtained using conventional manufacturing approaches.

A. AM processability impact on feedstock composition

B. Current commercially available materials for AM

C. Properties of AM parts from the perspective of service application requirements (metals, engineering polymers and ceramics)

 

V. Design for AM (2 hr)

AM removes many of the design constraints associated with molding, machining, and other conventional manufacturing processes, but it introduces its own set of design challenges. AM part designers must be aware of the accuracy and resolution limits of commercial AM machines, as well as the attainable part and material properties. This presentation describes the latest design for AM guidelines for powder bed fusion and fused deposition modeling.

A. Overview of design considerations for AM

B. Design guidelines for powder bed fusion

C. Design guidelines for material extrusion (FDM)

 

VI. Special Topics in AM (2 hr)

A perspective on the breadth of current AM will be probed by presenting three diverse topics.  These include a review of current ASTM/ISO standards related to AM and new standards under development. The repeatability and reliability of AM/3DP will be considered using as a specific case the mechanical properties of laser sintered polyamide. Finally, novel application of AM will be presented, which deal with conversion of digital photographs into AM back-lit images (lithophanes) and AM of metamaterials.

A. Review of current ASTM AM standards and outlook

B. Repeatability in AM using mechanical properties of laser sintered polyamide as an example

C. Optical properties application (lithophanes)

D. AM for energy-absorbing metamaterial applications

 

VII. The Future of AM/3DP (2 hr)

AM is a rapidly growing and expanding field. The future of the technology is broken into two sections: a mid-term perspective of what will be happening in the next 3-5 years and a long-term perspective that includes organ printing and volume-based AM/3DP. Participants will also be invited to engage in forward-thinking discussions of how AM/3DP can be applied to their own challenges.

A. Where it's all headed

B. Bio/organ printing

C. Food printing

D. Forward-thinking applications design challenges of interest to participants>

 

VIII. Round Table (Wrap Up and Questions)

|