STATISTICS OF AVALANCHES IN MARTENSITIC TRANSFORMATIONS .2. MODELING

Using a scaling assumption, we propose a phenomenological model aimed to describe the joint probability distribution of two magnitudes A and T characterizing the spatial and temporal scales of a set of avalanch es. The model also describes the correlation function of a sequence of such avalanches. As an example we study the joint distribution of amp litudes and durations of the acoustic emission signals observed in mar tensitic transformations [Vives et at, preceding paper, Phys. Rev. B 5 2, 12 644 (1995)].