Student Research Symposium Program Portal: Submission #193

Submission information
Submission Number: 193
Submission ID: 9041
Submission UUID: 5148f900-d0e1-46be-b88a-7cb8be3e0e6d

Created: Thu, 01/29/2026 - 06:42 PM
Completed: Thu, 01/29/2026 - 06:42 PM
Changed: Thu, 01/29/2026 - 06:42 PM

Remote IP address: 146.201.10.0
Submitted by: Anonymous
Language: English

Is draft: No
Primary Student Contact First Name Jonathan
Primary Student Contact Last Name Serbest
Pronouns
Primary Student Contact FSU Student Email jss24f@fsu.edu
Photo of all individuals presenting this work Professonal Photo of Case and Jonathan.png
Major(s) of all individuals presenting this work Mechanical Engineering
Bio of all individuals presenting this work Jonathan Serbest - Mechanical Engineering junior at Florida State University, Honors student, and current Vice President of RAM (Rocketry and Mechatronics) as well as SAME Chapter President in Panama City, FL. I’m gaining hands-on experience through an internship in the MEP field and plan to pursue a master’s in Systems Engineering to deepen my expertise. Passionate about engineering, leadership, and Olympic weightlifting. I'm seeking opportunities that value innovation, systems thinking, and a proactive, growth-oriented mindset.



Case Dyer - I am a highly motivated, hardworking, and principled student with experience in SolidWorks, 2-D AutoCAD, and basic computer skills pursuing a summer internship in the field of Mechanical Engineering.

What inspired me to enter into the field of Mechanical Engineering was when the engine in my 2003 VW Jetta 1.9L TDI failed. I decided to take it apart and find what had failed in my engine and how I could fix it. After much work, I ended up having to replace the entire cylinder head of my engine, but eventually I put it all back together and am still running this four-cylinder diesel saving machine 50,000 miles later with now 357,000 miles.
Poster Title L-PBF 3D Printed Inconel 718 Torsion, Tension, and Fracture Surface Report
Abstract Twelve additively manufactured Inconel 718 metal samples, a high-strength nickel-based alloy,
were subjected to mechanical loading tests and fracture surface examination. Six samples are
subjected to torsional loading to failure, while six samples are subjected to elastic tensile loading.
The specimens tested are split into two categories: heat-treated and un-heat-treated. The material
is manufactured using Laser Powder Bed Fusion (L-PBF), an additive manufacturing process in
which a high-energy laser selectively melts successive layers of metal powder to build a solid
component. Due to the newness of this technology, limited information is available on how the
L-PBF process affects material properties.
The purpose of these tests is to determine application-based mechanical properties of additively
manufactured Inconel 718 at room temperature under torsional and tensile loading. Properties of
interest include Ultimate Torsional Shear Strength, Torsional Yield Strength, Shear Modulus,
Modulus of Elasticity, Proportional Limit, and Poisson’s Ratio. The mechanical properties
determined for both heat-treated and un-heat-treated specimens show noticeable variation when
compared to published experimental values, indicating potential effects from additive
manufacturing parameters and post-processing conditions.
Overall, the tests demonstrate the ability of this high-strength, ductile material to withstand
considerable deformation under torsional loading. Fracture surface examination shows that both
sample types predominantly fail along the plane of maximum shear, producing flat fracture
surfaces consistent with ductile material behavior and predictions from Mohr’s circle for pure
torsion. This study contributes experimental insight into the mechanical response of L-PBF
Inconel 718 in torsion and tension.
Research Mentor Name Yvonne Traynham
Research Mentor's College (or High School) Florida State University
Research Mentor's Department (or Subject) PCC Academic Faculty Office Su (PC_ACADSPT) 301010
Research Mentor's Email ytraynham@fsu.edu
Additional Research Mentor(s)
Co-presenter(s) Case Dyer
Keywords L-PBF 3D Printed Inconel 718
Poster Session/Number
Work Complete
Presentation Modality Face to Face Poster session
Poster PDF
Poster Thumbnail
I will be printing my poster No
Year 2026
Annual description 5th annual Undergraduate Research Symposium, April 17, 2025
Update URL https://pc.fsu.edu/student-research/symposium/research-symposium-program-portal?element_parents=elements/student_photo&ajax_form=1&_wrapper_format=drupal_ajax&token=BOodrEgD6EmylF-1JzHGT1HyQxWiGGF6RGzk3jmTnLI