Photopyroelectric measurement of the thermal diffusivity of recrystallized high purity aluminum
Date
1991Author
Peralta, S. B.Ellis, S. C.
Christofides, Constantinos
Mandelis, Andreas
Sang, H.
Farahbakhsh, B.
Source
Research in Nondestructive EvaluationVolume
3Issue
2Pages
69-80Google Scholar check
Metadata
Show full item recordAbstract
Thermal diffusivity measurements on high purity (99.99% pure) aluminum samples are reported, using chirped and sinusoidally-modulated laser excitation and photopyroelectric detection of the thermal wave response. The results are found to be dependent on the degree of recrystallization of the specimen: for cold-rolled aluminum, the thermal diffusivity is measured to be α=3.10×10-5 m2/s, which rises to 3.88×10-5 m2/s for fully recrystallized samples, and then falls to 3.53×10-5 m2/s for samples exhibiting the initial stages of grain growth. © 1991 Springer-Verlag New York Inc.