Conference Info



The Thirty-Second Annual International Solid Freeform Fabrication Symposium – An Additive Manufacturing Conference will be held August 2-4, 2021 in VIRTUAL format.  The meeting will run three full days from 8 AM to ~5:30 PM Central Standard Time (GMT -6). There will be optional social functions and other events allowing for personal interaction.  Please stay tuned for more information.





The official language of the conference is English.



$300 (full or student). The registration fee includes, in addition to full meeting access, all social events and a download version of the full conference proceedings.  To register, please click the "Register" button on the website homepage.  If you prefer a non-web-based version, a pdf of the registration form may be downloaded here.

2021 Meeting NSF Student Awards


​The meeting organizers have arranged funding for student support from the National Science Foundation.  Funding covers the full registration fee for selected students (foreign and domestic) studying at a US institution of higher learning.  Awards will directly cover the full student registration fee.  Award winners will pay no registration fee to attend the full meeting.  “Student” means an undergraduate or graduate student currently enrolled in a US institution of higher learning.  Postdoctoral scholars are not eligible.  International students currently studying at a US university are eligible.  Award students MUST (no exceptions, so please don’t ask) be a student at a US institution of higher learning, MUST attend the conference and MUST be an author or co-author on an oral or poster presentation.  We encourage students to submit to the poster session.  To be eligible for an award, students must download, complete and submit the application form, available here.  Application deadline is Friday, May 21 by 5:00 PM CDT (GMT -6).  You should be informed of acceptance by Friday, June 4.  The conference registration deadline for awardees is Monday, June 21.  The number of awards is limited to 175 recipients, and organizers reserve the right to limit the number of award recipients per university or per faculty advisor to fairly distribute the funds among institutions across the nation.




Abstracts are due April 30 (new date).  To submit an abstract, please click the "Conference Tools" button on the website homepage (  For the virtual format, you will need to upload  a prerecorded version of your presentation prior to the meeting.  More information later.

Poster Session

A poster session is set for late Tuesday afternoon.  To participate, please submit an abstract and check off the poster option button.  Poster presenters will be asked to prerecord a short, ~2-minute PowerPoint poster summary and to upload their poster prior to the meeting.  More information later.




The conference recognizes one outstanding junior and senior AM researcher annually.  For more information on the Freeform and Additive Manufacturing Excellence (FAME) Awards as well as application/nomination forms, please click the Awards link off the conference homepage.  The deadline for package submission for preferred consideration is May 1.



Authors must present their work at the meeting to have their manuscript included in the proceedings.  Manuscripts may be uploaded at this website.  Please click the "Conference Tools" button on the website homepage.  Authors submitting manuscripts have the option to have their manuscript reviewed/refereed.  Having a conference proceedings article reviewed is important to some authors, particularly academicians. Each manuscript receives two reviews using a referee pool composed of all authors submitting reviewed manuscripts. Authors selecting reviewed status for their manuscript must review two other manuscripts.  Please see the conference main homepage for deadlines.  Manuscript instructions may be obtained here.




Authors must present their work at the meeting to have their manuscript included in the proceedings.  Papers presented in presentation and poster sessions will be published in a downloadable format.  Each person (including students) registering for the full meeting will receive instructions to download the full proceedings about 4 months after the meeting.  Individual proceedings papers will be accessible to anyone and will be downloadable on line at the conference website.  Past Proceedings articles are available here at no charge.

Click here to download manuscript instructions.  Manuscript submission is optional for presenters.  Authors submitting manuscripts have the option to have their manuscript reviewed/refereed.  Having a conference proceedings article reviewed is important to some authors, particularly academicians. Each manuscript receives two reviews using a referee pool composed of all authors submitting reviewed manuscripts. Authors selecting reviewed status for their manuscript must review two other manuscripts.  Reviews are due at the conference; please see the conference main homepage for deadlines.

Organizing Committee

Dave Bourell, Chair    -    The University of Texas at Austin
Joe Beaman               -     The University of Texas at Austin
Rich Crawford             -    The University of Texas at Austin
Desiderio Kovar         -    The University of Texas at Austin
Carolyn Seepersad    -    The University of Texas at Austin

Mehran Tehrani         -     The University of Texas at Austin

Advisory Committee

Jack Beuth            -   Carnegie Mellon University

Denis Cormier      -   Rochester Institute of Technology

Phill Dickens         -   Nottingham University

Chad Duty            -   University of Tennessee

Brian Giera           -    Lawrence Livermore National Lab

Richard Hague     -    University of Nottingham

Ola Harrysson      -    North Carolina State University

Carl Hauser          -     TWI Technology Centre

Neil Hopkinson    -     XAAR

Bradley Jared       -    Sandia National Labs

Brandon Lane       -    NIST

Ming Leu               -     Missouri University of Science & Technology

Frank Liou             -     Missouri University of Science & Technology

Toshiki Niino         -     The University of Tokyo

David Rosen         -      Georgia Institute of Technology

Tom Starr              -      University of Louisville

Brent Stucker        -     ANSYS

Ryan Wicker          -     The University of Texas at El Paso

Chris Williams       -     Virginia Tech


SFF Symposium Special Sessions 


Authors are encouraged to submit abstracts in any topic related to Additive Manufacturing.  During the abstract submission process, authors will have an opportunity to self select from approximately 15 difference topic areas.  We have seven "special session topics" being organized by parties external to the Organizing Committee.  Abstracts for special topic inclusion should be submitted using the usual on-line submission process, but, during abstract submission, authors should select the special session topic in the "Select the Topical Area" feature.

Special Session: Composite AM 
Mehran Tehrani, University of Texas at Austin,
Scope: Additively manufactured (AM) composites have drawn considerable interest due to their improved properties and relative ease of manufacturing compared with their monolithic counterparts. The special topic will provide a forum to discuss the latest developments and challenges in additive manufacturing (also AM) of composites and nanocomposites. Topics of interest include but are not limited to: 

  • Innovations in materials: fiber and nanoscale reinforcements as well as thermoplastic, thermosetting, and ceramic matrices

  • Novel AM and post-processing of composite parts

  • AM-structure-property relationships

  • Failure and fracture of AM composites

  • Applications and quality control of AM composites

  • Design for AM composites 


Special Session: Data Analytics in AM
Prahalada Rao, University of Nebraska at Lincoln,
Scope: There is a burgeoning need to integrate in-process sensing and data analytics to overcome the process repeatability and part quality-related challenges in Additive Manufacturing (AM). These research thrusts are rooted in the analysis of high volume, variety and velocity of data with concomitant challenges from the domain of Big Data analytics. Accordingly, this special SFF session on Data Analytics in AM seeks papers in the following broadly defined areas:

Sensor fusion and data analytics for In-process quality assurance

Online process monitoring and defect mitigation

Sensor-based process-machine interaction modeling

Post-process data-driven, non-destructive metrology and measurement.

Special Session: Design Methodologies for Tailoring Performance of Additively Manufactured Parts for Naval Applications
John Michopoulos, Naval Research Lab
CONTACT: Ajit Achuthan, Clarkson University,
Amit Bagchi, Naval Research Laboratory
Scope: AM technologies have alleviated many of the limitations of conventional manufacturing technologies while raising many new issues of concerns to address. Both the widening of the design space and the morphological characteristics introduced by the AM processes (i.e, porosity, grain morphology variability, cellular substructures, surface roughness, etc.) cannot be addressed by conventional design principles. Although the topological and morphological design and optimization for AM materials and structures have gained a lot of attention, harnessing the full potential of AM to tailor the intended performance by systematically utilizing this large design space calls for the development of radically new design methodologies. In this session, we invite presentations/papers pertaining to experimental/modeling studies primarily focused on leveraging the benefits of AM for novel designs in a way that demonstrates unified approaches integrating morphological, topological, structural and functional designs. The topics to be covered in this session include: 1) development of new design methodologies, 2) hierarchical design of microstructure (cellular features, phases, grain sizes, shapes and texture); 3) structurally graded design of parts (reactive materials, heat exchangers, etc.); 4) mesostructural design; 5) multi-material design and manufacturing. Although a major emphasis of this special session will be on studies related to Naval Applications, general studies that serve the broader interests of Navy are also encouraged.


Special Session: Dimensional and Surface Characterization for Additive Manufacturing
CONTACT: Jason Fox, National Institute of Standards and Technology,
Joy Gockel, Wright State University
Scope: For the adoption of AM to continue to accelerate, a strong understanding of the dimensional and surface characteristics of AM parts will be required. As designers and engineers continue to push the limits of complexity, users must be able to determine accuracy of fabrication and finishing techniques. With this in mind, the purpose of this symposium is to review and discuss the measurement and characterization of AM part surfaces and dimensions. Emphasis of the talks should be on the measurement and characterization methods and uncertainty. Suitable topics for this symposium include:
Dimensional accuracy and surface finish of AM technologies
Dimensional characterization of internal geometries using XCT
Designation and realization of product definitions for AM (see ASME Y14.46 Product Definition for Additive Manufacturing)
Dimensional and surface characterization for complex geometries
Use of surface and dimensional characterization as a process signature of AM equipment
Characterization of as-built and post-processed AM surfaces
Relationships of dimensional and surface characteristics to function


Special Session: Hybrid AM Processes
Michael Sealy, University of Nebraska at Lincoln,
Scope: This is the third year for a special session on hybrid additive manufacturing (hybrid-AM). Participants are invited to present research on hybrid additive manufacturing (hybrid-AM) processes. Hybrid AM processes incorporate additive manufacturing with one or more secondary processes and/or energy sources that are fully coupled and synergistically affect part quality, functionality, and/or process performance. Potential topics of interest include but are not limited to AM processes coupled with:
Machining (e.g., milling), 
Laser re-processing (e.g., remelting or ablation)
Surface treatments
Friction stir processing, etc.
Hybrid-AM machines
Sensing and tool path planning in hybrid-AM
Dimensional accuracy and deviation from machining 
Economic/Sustainability issues in hybrid-AM


Special Session: Solid Particle Aerosol Deposition Processes
Desiderio Kovar, University of Texas at Austin,
Scope: Solid particle aerosol deposition (AKA micro cold spray) offers a means to deposit patterned or large area ceramic and metal films at room temperature onto polymer, metal, or ceramic substrates. These unique capabilities offer the possibilities to direct-write a wide range of technologically significant materials and devices. The ability to tailor film microstructure and properties requires a further understanding of the roles of particle properties and processing parameters on film properties.  This symposium seeks papers on the study of the physics-based modeling of process parameters, particle and film and pattern morphologies, films properties, and materials and device development.


Special Session: Wire-fed AM Processes
Andrzej Nycz, ORNL-MDF
CONTACT: Bishal Silwal, Georgia Southern University,
Bill Hamel, University of Tennessee
Chris Allison, GKN aerospace
Scope: Wire-fed metal AM has significant potential to revolutionize the way large-scale parts are fabricated. The objective of this special session is to accelerate and disseminate research activity in wire-fed AM. All types of power sources including laser, welding arc and electron beam will be considered. Participants are invited to present research and development in wire-fed additive manufacturing related to process development (hardware and software), tool path planning, new material deposition, numerical simulation, multi-wire deposition, surface features and many more. All research areas of wire-fed AM will be considered in this special session.