Article history: Received 7 October 2009 Received in final revised form 7 October 2010 Available online 16 October 2010

Here, we report measurements of detailed dynamic cohesive properties (DCPs) beyond the fracture toughness a bicontinuously nanostructured copolymer, polyurea, under an extremely loading rate, from deep-learning analyses big-data-generating experiment. We first describe new Dynamic Line-Image Shearing Interferometer (DL-ISI), which uses streak camera to record optical fringes displacement-gradie...

Through numerical simulation, the blast-resistant performance of spray polyurea elastomer (SPUA) retrofitted concrete masonry unit (CMU) infill walls under far-range blast loading was studied. From an engineering perspective, effects boundary conditions and thickness a SPUA layer on enhancing resistance are discussed, SPUA-retrofitted grouted CMU compared. It is concluded that constraint anchor...

Polyurea microcapsules containing 2-chloro-N-(2,6-diethylphenyl)-N-(methoxymethyl)acetamide as the active agent were prepared by the method of interfacial polycondensation with methylene bis(phenyl isocyanate) as the multifunctional isocyanate, hexamethylene diamine as the diamine, and anionic sodium lignin sulphonate as the emulsifying agent . Thermal stability of the microcapsules was investi...