In September of 2017, a category 5 hurricane made landfall in the island of Puerto Rico. The devastation caused by the natural disaster resulted in a national emergency situation where almost 100% of the island lost its electrical power and sanitized water access. As part of the recovery process of the island, Ricardo, along with a group of undergraduate and graduate students and faculty members at the Georgia Institute of Technology, organized recollection stations on and off campus to collect articles that were later shipped to the island. A GoFundMe account was also created to collect economic donations to aid in the recovery efforts.
In recognition of this work, Ricardo was selected for this year’s Petit Institute Interdisciplinary Research and Educational “Above and Beyond” Award. “The Petit Institute Above and Beyond Awards are given to team-based individuals that demonstrate exemplary service to the institute and contribute to its warm, collaborative environment. Awards are given each year to a senior faculty member, a pre-tenure faculty member, two trainees (graduate or postdoctoral fellow) and a staff member.”
Cassandra Telenko was named a rook Byers Institute for Sustainable Systems Faculty (BBISS) Fellow, and will serve for three years as part of the advisory board for BBISS. Four other faculty representing different colleges within Georgia Tech were also named as Fellows. The Fellows receive a discretionary stipend to support their work as well. Dr. Telenko plans to lead additional efforts for industry outreach and professional education in sustainable innovation.
Ruoyu Song was selected to receive a Possible Woman® Foundation International (PWFI) scholarships due to her outreach and scholastic achievements. Applicants are chosen on the basis of nominations by a faculty member or school officer, the student’s potential, academic achievement, service to the community, research experiences, and leadership. This award brings Ruoyu into a network of high-achieving and inspiring women and mentoring by women trailblazers.
Founded in 2001 by Linda Wind, CEO of Wind Enterprises® Inc., and granted 501(c) (3) status Spring of 2002, the purpose of the foundation is to support the development of an academic scholarship program for high achieving women pursuing non-traditional degree programs at the college level. The vision of the Possible Woman® Foundation is that educational experiences, combined with strong mentoring, support and information resources, provide talented women with the opportunity to advance, professionally and personally, in today’s competitive environment.
Tiffany Chau won a President’s Undergraduate Research Award (PURA) to fund her work in sustainability of additive manufacturing. Tiffany studies the designer, operator, and machine errors that contribute to material waste and efficiency in Georgia Tech’s invention studio.
Tiffany started research with the CASS Lab in Spring of 2017. She is an exceptional engineer and we are very proud to have her as a member of the team!
Ruoyu Song’s paper, “Material and energy loss due to human and machine error in commercial FDM printers”, with Dr. Cassandra Telenko is now in press.
- Failure rates of FDM resulted in 2.2 times the waste of a controlled process study.
- Calibration problems contribute to a large portion of the material waste.
- Reducing preheating and standby time can reduce the energy consumption of FDM.
- Energy LCI of FDM in use was about 50% greater than under ideal conditions.
Abstract Additive manufacturing is thought to have environmental benefits. However, material waste and energy consumption could be larger than expected due to human or printer error. In general, fused deposition modeling (FDM) printers using ABS plastic have three stages for parts fabrication: the standby period, preheating process and the printing process. In practice, the quantity of support material is influenced by the part orientation and settings of the printing. Material waste and energy consumption for commercial FDM printers using ABS material in a heavily utilized open shop were analyzed. The failed prints were classified into 9 different categories and analyzed. The data indicated that about 34% of the plastic used in the open studio was wasted. Only considering the failed prints as the extra amount of material consumed under realistic conditions, the mass of material lost to failed builds was about 2.22 times what might be estimated in a controlled process study. For energy consumption, the standby period and preheating time vary for every job, which results in variability of energy consumption. The printing time is based on the geometry of parts being built, the part printing orientation and setting of that print. From collected data, the preheating energy consumption is 0.835 MJ/kg, the printing is 21.5 MJ/kg, and the standby is 9.5 MJ/kg. Moreover, suggestions to reduce the building cost for each failure type are given. A life cycle inventory (LCI) combining the material waste and energy consumption data of FDM reveals that actual energy consumption may be 50% more than under ideal conditions.