Use of PVDF Wire Sensors for Leakage Localization in a Fluid-Filled Pipe

Area of Science:

• Mechanical Engineering
• Materials Science
• Acoustics

Background:

• Pipeline leak detection commonly relies on cross-correlation methods using sensor data.
• Accurate time delay estimation is crucial for pinpointing leaks.
• Existing methods may have limitations in deployment ease and cost.

Purpose of the Study:

• To identify suitable, easily deployable sensors for monitoring pipeline vibrations caused by leak noise.
• To evaluate polyvinylidene fluoride (PVDF) wire sensors as a potential solution for leak detection.
• To compare the performance of PVDF sensors with hydrophones in a controlled environment.

Main Methods:

• Utilizing the low-frequency propagation characteristics of leak noise.
• Proposing and deploying polyvinylidene fluoride (PVDF) wire sensors.
• Conducting experimental investigations at a dedicated leak detection pipe rig.
• Comparing PVDF sensor performance against hydrophones.

Main Results:

• PVDF wire sensors demonstrated capability in detecting pipeline leak signals.
• Experimental results showed comparable or advantageous performance metrics when contrasted with hydrophones.
• The non-intrusive nature and low cost of PVDF sensors were highlighted.

Conclusions:

• PVDF wire sensors are a viable and promising technology for pipeline leak detection.
• These sensors offer advantages in terms of non-intrusive deployment and cost-effectiveness.
• PVDF sensors represent a potential upgrade or replacement for current commercial leak noise transducers.