Single Pair Ethernet (SPE) is a newer type of cable that can send both data and power using just one pair of wires. Because it uses less material, it is smaller and lighter than traditional Ethernet cables. This makes it useful in places like factories, transportation systems, and other tight or complex environments. However, these cables are often used in places where conditions can be harsh—such as underground transit systems or industrial sites—where there may be water, humidity, or high temperatures. Over time, moisture can damage the cable’s protective covering, which may affect how well it works. The goal of this project was to understand how exposure to moisture affects both the physical condition of SPE cables and how well they transmit data. The project examined how damage to the cable’s insulation impacts real-world performance, such as signal quality and reliability. To do this, both aged and unaged cable samples were provided. These samples were tested under conditions that simulated accelerated aging by placing them in 90-degree Celsius water. The cables were evaluated after exposure to moisture to compare how their performance changed between conditions. Instead of relying only on calculations, the project focused on real-world testing to better understand what happens as the cable degrades. Cameras were also used to observe the cables' capability of transmitting data and power. This helped to test the cable for performance issues or failures. In the end, this project helped identify how moisture affects SPE cables and provided insights that can improve their design and reliability, especially in environments where failure is not an option.

Our team collaborated with Materials Science & Engineering 5 on this project.