Mechanical Engineering Graduate Seminar

Thursday, March 2 at 3:30 pm to 4:20 pm
Seamans Center, 3505 SC
103 South Capitol Street, Iowa City, Iowa

Tunable Energetic Material presented by Assistant Professor Travis Sippel, Department of Mechanical Engineering, Iowa State University. Abstract:  Since the invention of gunpowder, energetic materials have been used for over a millennium in mining/construction, transportation, and defense applications. The recent discovery of nanoscale energetic materials has led to a shift from traditional C-H-N-O chemistries of highly nitrated molecular energetics to the development of heterogeneous energetics with length scales that enable kinetically limited combustion. Nanoscale energetic materials have enabled reactivity more similar to some molecular energetics and have increased gravimetric and volumetric energy densities three-fold while offering avenues through which energetic output and sensitivity may be tuned through control of nano/microstructure. Despite the abundance of work focused on tuning energetic output through control of composition, little effort has focused on in situ tuning techniques which may enable on-command control of energetic output (e.g. thrust, light emission, detonation velocity, and propulsion system ignition/shutdown). This presentation aims to discuss recent advances in tuning of energetic material output via micro/nanostructure as well as by in situ microwave irradiation and offers perspective on ways micro/nanostructure control can be exploited to enable microwave control in order to lead to the development of the next generation of ‘smart’ energetic materials. Individuals with disabilities are encouraged to attend all University of Iowa sponsored events. If you have a disability that requires an accommodation in order to participate in this program, please call the department  in advance, at 335-5939.

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