Abstract
Photoacoustic microscopy, in which modulated light is absorbed by an opaque material and converted into a thermal wave, can be used as an in-situ technique for determining the thermal diffusivity of the material.1–5 If a microscope is used to image the light onto a heterogeneous sample containing different components embedded in a matrix, the thermal diffusivities of components as small as fifty micrometers can be probed. This paper illustrates how photoacoustic microscopy can be used to determine the diffusivities of carbon-carbon composite materials.KeywordsThermal DiffusivityThermal WaveBack SurfacePhotoacoustic SignalRadial FiberThese keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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