Annalisa Pola

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We present the first results from the first Caltech-Jodrell Bank VLBI survey (the CJl survey). The CJl sample includes 135 radio sources with total flux density 1.3 Jy > S6 cm ~ 0. 7 Jy, declination 01950 ~ 35°, and Galactic latitude I b 11 I > 10°. It extends the flux density limit of the complete "PR" sample studied by Pearson & Readhead from 1.3 to 0. 7(More)
Research progress on the optimization in order to obtain the value of material constants for a set of creep damage constitutive equations was presented, including (1) a brief review of continuum creep damage modeling and the designs of objective functions; (2) case study reporting the influence of the initial start points on the final results; and (3)(More)
Considering heavy forged parts presented that water spray is an appropriate technique as quenching operation. In general, the rapid cooling causes residual stress field due to the dis-homogeneity of the distribution of temperature in the part and the different microstructural phases. In comparison with other conventional quenching methods, spray-quenching(More)
In the most recent decades the introduction of unconventional machining processes allowed the development of micromachining techniques. In this work, the influence of material microstructures on the micromilling process was investigated. Ti6Al4V alloy was selected as workpiece material since it is a very common material for micro applications and because(More)
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