Hi, I'm Liam Streleckis — a 4th year mechanical engineering student at Georgia Tech. I am passionate about testing, designing, and improving products to solve real-world problems. This site is a collection of projects I've worked on throughout my studies and career so far.
Download or view my resume below.
View Resume (PDF)This is a collection of tests I conducted at the Georgia Institute of Technology Structures Lab. These tests provided me with valuable experience in visualizing and analyzing structural behavior, as well as hands-on experience with testing equipment and data collection.
While at UL Solutions, I aided in the design and prototyping of a pressurized water recirculation test rig that expanded the laboratory's testing capabilities. This project made use of a jet pump and diapragm tank, with a pressure switch that automatically turned the pump on and off to maintain a set pressure range to mimic household water pressures. This fixture was used to test the performance of hot water recirculation pumps and will be used to test future household plumbing products in the RTL's near future.
A team of students and I evaluated a custom tensile test rig for a client to determine its usable force and displacement range. We calibrated the force and position transducers, characterized the rig's own deformation under load, and tensile tested a climbing sling, a set of bolts, and an aluminum dog bone to failure. The rig met the client's 10% uncertainty requirement for forces above 1770 N and displacements above 3.83 mm, but could not reliably test the stiffer bolts, so we recommended a higher-resolution position sensor for future testing.
A team of students and I investigated why a client's wing spar failed near its cruise speed by modeling it as a cantilever beam and performing vibration testing. We found the spar's natural frequency, 36.9 Hz, was dangerously close to the 40 Hz cruise frequency, explaining the failure. We then designed and tested a tuned mass absorber that reduced the displacement response by 37 dB at cruise speed, and recommended operating the modified wing between 1800 and 4044 RPM to maintain a safe vibration margin.
A team of students and I tested a custom SONAR distance-measurement system against a client's ±1 cm accuracy requirement. We developed a signal processing procedure that averaged multiple bursts, subtracted a target-free baseline signal, and corrected for timing bias to isolate the true reflection signal from background noise. Despite these improvements, the system averaged a -1.02 cm error across the 0-1 m target range, meeting the required accuracy only between 0.5-0.6 m and 1.2-1.3 m.
The failure of my ladder in the personal room presented me the opportunity to design and build a custom staircase for my room, allowing my cat to safely navigate to my loft. This experience developed my woodworking and design skills.
A team of students and I conducted an interview with Samflax, a locally owned art business, in the Atlanta area, to explore potential issues and motivations behind their business operations. This information was used to explore potential design solutions to improve business operations.
Personal art pieces for practice and communication of ideas.
