The new idea for estimating Hugoniot of the materials based on the formulation of a non steady flow of the shock wave propagation has been proposed. In general, though the Hugoniot measurement employs the shock wave with perfectly square waveform, a proposed method can be applied even for the decayed shock wave. This method can determine the relationship of the Hugoniot on particle velocity-shock velocity, and the local slope of the Hugoniot by using two profiles of the particle velocity.
衝撃波伝播を記述する非定流れの式に基づく材料のHugoniotを見積もるための新しい方法を提案した。一般に，Hugoniot 測定は完全に矩形状の衝撃波を使用するが，減衰する衝撃波の場合であっても，本方法を適用できる。本手法は二つ の粒子速度履歴を用いて，Hugoniotの関係，およびHugoniotの局所的な勾配を決定できる。
Hugoniot, decayed shock wave, particle velocity, slope of the Hugoniot.