Abstract Industrial piping structures often suffer from corrosion caused by biofouling or chemical etching, which can cause immediate structural failure. Polyurea coatings, are fabricated for emergency leak sealing, able to form high mechanical strength coating surfaces within seconds. After its further modification via Ce/La-doped TiO 2 , the polyurea will indicate an increment in strength, du...

Abstract Polymeric materials and composites are well suited to support structures in marine conditions due their corrosion resistance. However, low glass transition temperature makes them vulnerable softening at high temperatures. Hence, fire retardancy is a key aspect if these selected ensure stiffness under flammable conditions. In this paper, fire-retardant polyurea coating for industrial ap...

0167-6636/$ see front matter 2011 Elsevier Ltd doi:10.1016/j.mechmat.2011.04.001 ⇑ Corresponding author at: Impact and Crashwo Department of Mechanical Engineering, Massachuse nology, Cambridge, MA, USA. E-mail address: [email protected] (D. Mohr). Punch indentation experiments are performed on 10 mm thick polyurea layers on a steel substrate. A total of six different combinations of punch velocity,...

Polyurea elastomer is known to exhibit advantageous impact-mitigation characteristics and thus can improve the dynamic performance of various components structures. This study identifies mechanisms response thin metallic plates, covered by a frontal polyurea layer, using physically verified, custom material model for two-part implemented within finite-element-method framework. A linear increase...

To investigate the effect of polyurea on protective performance a steel target plate under combination shock wave and fragments, failure characteristics, damage process micro mechanism coated plates with different coating methods explosion waves fragments were analyzed through experiments numerical simulations. The results showed that single-sided coatings aggravated when thickness was 2 mm. Wh...

Despite major advances in the pathophysiological understanding of peripheral nerve damage, the treatment of nerve injuries still remains an unmet medical need. Nerve guidance conduits present a promising treatment option by providing a growth-permissive environment that 1) promotes neuronal cell survival and axon growth and 2) directs axonal extension. To this end, we designed an electrospun ne...