Photopyroelectric measurement of the thermal diffusivity of recrystallized high purity aluminum
Ημερομηνία
1991Συγγραφέας
Peralta, S. B.Ellis, S. C.
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Mandelis, Andreas
Sang, H.
Farahbakhsh, B.
Source
Research in Nondestructive EvaluationVolume
3Issue
2Pages
69-80Google Scholar check
Metadata
Εμφάνιση πλήρους εγγραφήςΕπιτομή
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.