Hot spots in energetic materials generated by infrared and ultrasound, detected by thermal imaging microscopy
作者： Ming-Wei Chen , Sizhu You , Kenneth S. Suslick , Dana D. Dlott
DOI: 10.1063/1.4864197
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摘要: We have observed and characterized hot spot formation hot-spot ignition of energetic materials (EM), where spots were created by ultrasonic or long-wavelength infrared (LWIR) exposure, detected high-speed thermal microscopy. The microscope had 15–20 μm spatial resolution 8.3 ms temporal resolution. LWIR was generated a CO2 laser (tunable near 10.6 28.3 THz) ultrasound 20 kHz acoustic horn. Both methods energy input spatially homogeneous fields, allowing to develop spontaneously due the microstructure sample materials. which grew caused EM ignite. studied here consisted composite solids with 1,3,5-trinitroperhydro-1,3,5-triazine crystals polymer binders. simulants based on sucrose in binders also examined. mechanisms generation different ultrasound. With LWIR, most efficiently within cr...
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