کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
977782 | 933207 | 2013 | 7 صفحه PDF | دانلود رایگان |

• The fragment mass distribution of a polymer cylinder depends on the projectile velocity.
• The fragment mass distribution of a polymer cylinder depends on type of the polymer material.
• For polyurethane, the fragments mass from a lower-velocity impact distributes in the lognormal form.
The impact fragmentation of a bulk polyurethane elastomer (PU) and polypropylene (PP) cylinder have been investigated using a Cu plate projectile launched by a propellant gun at a velocity of 0.53–1.4 km/s. A projectile drills into a PU sample and forms a cavity in the sample. A small number of tiny fragments are formed. When the projectile smashes in at 1.4 km/s, the PU cylinder bursts and PU fragments form. On the other hand, a brittle fracture occurs on the PP cylinder. The mass of fragments from the PU sample generated at a lower impact velocity is distributed in the lognormal form, whereas the mass of fragments from the PU sample generated by a 1.4 km/s impact follows a power-law distribution. The fragment mass distribution of the PP sample generated at a lower impact velocity obeys the power-law form, whereas that generated at a higher impact velocity follows the lognormal form.
Journal: Physica A: Statistical Mechanics and its Applications - Volume 392, Issue 22, 15 November 2013, Pages 5574–5580