The Development of Polylactic Acid (PLA) C-Channel Connector

Abstract

In this project, an innovative modular connector created especially for
C-channel truss systems in construction is presented. Conventional
installation techniques like welding, screwing, and manual alignment
are time-consuming, frequently need skilled labor, and present safety
hazards on the job site. In order to overcome these obstacles, a
connector was created with AutoCAD software and manufactured via
3D printing using PLA (polylactic acid) material, which is renowned for
its excellent dimensional correctness, durability, lightweight nature,
and environmental sustainability. The connector offers structural
versatility and ease of installation by supporting a variety of truss angle
configurations, such as 90°-45°-45°, 126°-27°-27°, and 140°-20°-20°.
Vernier calipers were used for dimensional verification in a fitment test
to assess the connector's precision alignment and compatibility with
typical C-channel profiles. The findings demonstrated that the
connector provides a firm, secure fit without the need for sophisticated
equipment or trained workers, thereby cutting down on assembly time
and enhancing installation consistency overall. PLA is biodegradable,
therefore using it not only makes the connector economical and
recyclable, but it also encourages sustainable building approaches. This
study offers enhancements in efficiency, structural performance, and
environmental effect while illustrating a workable, secure, and scalable
solution for contemporary construction needs. Additionally, it creates
new avenues for future study into alternative thermoplastic materials,
3D printing integration into structural engineering applications, and
modular joint design optimization.