Pressure-sensitive paint: effect of substrate

Area of Science:

• Materials Science
• Surface Engineering
• Optical Measurement

Background:

• Pressure-sensitive paint (PSP) is a valuable tool for non-intrusive surface pressure mapping.
• The performance of PSP is highly dependent on the substrate material and application technique.
• Optimizing PSP application is crucial for accurate and reliable pressure measurements.

Purpose of the Study:

• To investigate and compare different substrates for pressure-sensitive paint application.
• To evaluate the influence of substrate choice on PSP performance metrics.
• To assess the suitability of various substrates and luminophores for diverse testing scenarios.

Main Methods:

• Comparison of one polymer-based substrate and two porous substrates (anodized aluminum, TLC plates).
• Evaluation of two luminophores: tris-Bathophenanthroline Ruthenium(II) Perchlorate and Platinum-tetrakis (pentafluorophenyl) Porphyrin.
• Assessment of luminescent output, pressure sensitivity, temperature sensitivity, and photodegradation for each combination.

Main Results:

• Substrate properties significantly impact PSP luminescent output and sensitivity.
• Anodized aluminum and polymer substrates showed distinct advantages in specific performance areas.
• Photodegradation varied across substrates, influencing long-term applicability.

Conclusions:

• The choice of substrate and luminophore is critical for tailoring PSP performance to specific applications.
• Porous substrates like anodized aluminum offer unique benefits for certain pressure-sensitive paint measurements.
• This research provides essential data for selecting optimal PSP systems for diverse environmental conditions.