A5047281501- Analytical Chemistry and Sensors
- Advanced Sensor Technologies Research
- Gas Sensing Nanomaterials and Sensors
- Icing and De-icing Technologies
- Surface Modification and Superhydrophobicity
- Gas Dynamics and Kinetic Theory
- Advanced Fiber Optic Sensors
- Photoacoustic and Ultrasonic Imaging
- Aerodynamics and Fluid Dynamics Research
- Fluid Dynamics and Vibration Analysis
- Analytical chemistry methods development
- Fluid Dynamics and Turbulent Flows
- Smart Materials for Construction
- Plasma and Flow Control in Aerodynamics
- Aerodynamics and Acoustics in Jet Flows
- Computational Fluid Dynamics and Aerodynamics
- Acoustic Wave Resonator Technologies
- Luminescence and Fluorescent Materials
- Diamond and Carbon-based Materials Research
- Fluid Dynamics and Heat Transfer
- Flow Measurement and Analysis
- Water Quality Monitoring and Analysis
- Particle Dynamics in Fluid Flows
- Winter Sports Injuries and Performance
- Adhesion, Friction, and Surface Interactions
University of Notre Dame
2016-2025
Notre Dame College
2022
Notre Dame University
2022
Japan Aerospace Exploration Agency
2006-2015
Kyushu University
2012
Tokyo University of Agriculture and Technology
2005
Purdue University West Lafayette
1999-2002
RIKEN
1994
The development and capabilities of fast-responding pressure-sensitive paint (fast PSP) are reviewed within the context recent applications to aerodynamic acoustic investigations. PSP is an optical technique for determining surface pressure distributions by measuring changes in intensity emitted light, whereas fast extension applicable unsteady flows acoustics. Most formulations based on porous binders that allow rapid oxygen diffusion interaction with chemical sensor. This article reviews...
Abstract The development of new materials and their compositional microstructural optimization are essential in regard to next-generation technologies such as clean energy environmental sustainability. However, discovery have been a frustratingly slow process. Edisonian trial-and-error process is time consuming resource inefficient, particularly when contrasted with vast design spaces 1 . Whereas traditional combinatorial deposition methods can generate material libraries 2,3 , these suffer...
Ice adhesion tests are widely used to assess the performance of potential icephobic surfaces and coatings. A great variety test designs have been developed over past decades due lack formal standards for these types tests. In many cases, aim research was not only determine ice values, but also understand key surface properties correlated low surfaces. Data from different measurement techniques had correspondence between results: Values varied by orders magnitude showed relative relationships...
The response time of anodized aluminum pressure-sensitive paint (AA-PSP) was studied to develop the capability making global pressure measurements in unsteady flow conditions. This (PSP) uses as a porous supporting matrix, which improves by increasing oxygen diffusion process PSP layer. A 34.8 μs obtained from AA-PSP with 4.3-μm matrix thickness. Response times PSPs were measured step change created normal shock wave tube. is dependent on thickness, thin giving fast time. increase surface...
Pressure-sensitive luminescent coating on porous anodized aluminium (AA-PSP) was applied to measure non-periodic unsteady pressure distribution a wind-tunnel model. A high-speed digital video camera used capture the PSP signal. The pressure-sensitive dye tris(4,7-diphenylphenanthroline) ruthenium(II) ([Ru(dpp)3]2+). has short response time of O(10 µs), although it exhibits temperature and humidity sensitivities. hydrophobic surface suppress sensitivity. sensitive paint obtain instantaneously...
A pressure-sensitive paint (PSP) with fast response characteristics that can be sprayed on a test article is studied. This PSP consists of polymer for spraying and porous particle providing the response. We controlled content (%) from 10 to 90% study its effects characteristics: signal level, pressure sensitivity, temperature dependency, time The level dependency shows peak in around 50 70%. sensitivity was fairly constant range between 0.8 0.9 %/kPa. improved by lowering content. variation...
A motion-capturing pressure-sensitive paint (PSP) method is introduced to capture unsteady motions and flow fields of objects. Conventionally, the intensity-based has been used cancel pressure-independent image a PSP measurement extract pressure-dependent image. However, this not applicable if changes in time. The new method, namely imaging two-color PSP-coated surface with high-speed color camera, acquires both images simultaneously. This reference luminescence blue established using an...
The fast response time characteristics of porous pressure-sensitive paint (porous PSP) are applied to unsteady flowfield measurements. a fluidic oscillator is investigated by using anodized aluminum (AA), thin-layer chromatography (TLC), and polymer/ceramic (PC) as supporting matrices. frequency these PSPs measured shock tube, showing responses 12.2, 11.4, 3.95 kHz for AA-PSP, TLC-PSP, PC-PSP, respectively. Flow oscillations various phases captured with in the tests, AA-PSP giving sharpest images
Luminophore application studies of dipping deposition method on anodized aluminum pressure sensitive paint (AA-PSP) are presented. Studies include the solvent dependency application, and steady-state unsteady-state characterizations, such as luminescent signal level, sensitivity, response time. Solvents were varied by their polarity index. It is found that in greatly influences luminophore onto aluminum, sensitivity. The maximum level obtained from acetone a solvent. However, dichloromethane...
Abstract Fast pressure-sensitive paint (PSP) was applied to an inlet/isolator designed using the Osculating Internal Waverider Inlet with Parallel Streamlines (OIWPS) method. The dorsal isolator surface pressure measured anodized-aluminum PSP through transparent cast acrylic that makes up ventral portion of isolator. Temperature-sensitive utilized correct for PSP’s temperature sensitivity. model tested under Mach 5.7 flow at Re $$=$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML">...
A polymer-ceramic pressure-sensitive paint (PC-PSP) is a fast responding and sprayable PSP which has been applied for capturing global unsteady flows. The luminophore application process studied to enhance the characterization of PC-PSP. dipping deposition method used apply on coating. selects solvent by its polarity index. includes signal level, pressure sensitivity, temperature dependency, response time. It found that affects steady-state characterizations, such as dependency. range change...
Polymer-ceramic pressure-sensitive paint (PC-PSP) has been investigated as a surface-pressure sensor for unsteady aerodynamics and short duration measurements. This PSP provides fast response to change in pressures with spray-coating ability. Because it is sprayed onto an aerodynamic surface, the thickness of PC-PSP may play important role determining performance this sensor. The other PSPs, such anodized aluminum paint, major factor its performance. We vary from 10 240 μm order study...
In-flight icing for aircraft is a large concern all those involved in operations. Generally, an electric heater has been used to prevent in-flight icing. A hybrid anti-icing system combining ice-phobic coating and electrothermal heating (ICE-WIPS) proposed by the Japan Aerospace Exploration Agency (JAXA) reduce power consumption unit. In order validate effectiveness of ICE-WIPS, validation demonstration tests are conducted using wind tunnels at Kanagawa Institute Technology (KAIT) Icing...
This work demonstrates the capability of porous pressure sensitive paint (porous PSP) to make full unsteady surface measurements in rotating turbomachinery. Response time calibrations with shock tube and oscillating jet experiments show that PSP responds fluctuations as fast 40 kHz. Porous is used this measure on wall a turbocharger compressor inlet. The blade passage frequency ranges up 10 paper also use thin turbomachinery components where it difficult apply conventional instrumentation....
Anodized-aluminum pressure-sensitive paint (AA-PSP) has been used as a global pressure sensor for unsteady flow measurements. We use dipping deposition method to apply luminophore on porous anodized-aluminum surface, controlling the concentration of optimize AA-PSP characteristics. The is varied from 0.001 10 mM. Characterizations include sensitivity, temperature dependency, and signal level. sensitivity shows around 60 % at lower up 0.1 Above this concentration, reduces half. dependency...