Japan Explosive Society
Mr. Taro Kimura
Study on Analysis of Unsteady Thermal Behavior of Metallic Sparks
Mr. Taro Kimura experimentally clarified the behavior of metallic sparks generated by a grinder to elucidate the conditions of metallic sparks generated during cutting and grinding of metallic materials. He theoretically discussed his observations and published them as "Analysis on unsteady thermal behavior of ground iron sparks" in Science and Technology of Energetic Materials.
He revealed the unsteady thermal behavior of metallic sparks based on the particle size of metallic sparks, temperature change above 1000 K observed with a high-speed camera and temperature measurements.
He also found from the measurements that the temperature change and heat balance, which are closely related to the color of the sparks, are revealed by the time change.
He has also theoretically elucidated situations in which air resistance slows down the flying speed of metallic spark particles and unsteady thermal behavior due to surface oxidation.
These results of his research are valuable for clarifying the unsteady thermal behavior of metallic spark particles generated and flying by cutting, friction, etc. of metallic materials.
Since these analytical methods can be applied to the analysis of spark particles generated by fireworks, they are expected to be scientifically applicable to the elucidation of exothermic luminescence phenomena in traditional smoke fires.
For this reason, Mr. Taro Kimura is worthy of the Japan Explosives Society Encouragement Award for his research results, which contribute to the development of the fireworks industry and the improvement of its safety.