High-velocity microparticle impacts are relevant to many fields from space exploration additive manufacturing and can be used help understand the physical chemical behaviors of materials under extreme dynamic conditions. Recent advances in experimental techniques for single have allowed fundamental investigations dynamical responses wide-ranging samples including soft materials, nano-composites...

The wrist is a common injury site for snowboarders who often fall onto an outstretched hand. Wrist protectors are worn by some to prevent injuries attenuating impact forces and limiting extension. This paper presents bespoke pendulum test device impacting when fitted surrogate. rig can replicate risk scenarios, while measuring temporal extension angles. Results from testing 12 snowboarding pres...

The theory of electron impact ionization of oneand two-electron atoms has advanced significantly in the past two years. This paper will summarize the progress that the members of our research center have contributed to.

Abstrad In T U D envitnnnrm?b, o I)rOJ)cr vector disc:rc</izcr/ion i /wo or /hrw dimensiuns is N I I impurtunt isstre. Pllysiml models like tile impact ionization rate depend on vector quantities. Two discrerization mct11od.s fur Dc~Iuunuy rneslzes bused only on /17e zrtis/rrrc~urc~d ncig/?horhood ir?fomatioit are prc.vcnted. Ol~crall good conwGcmce is uc:hie~~e~I by upplying fhese me/liods in ...