耐火煉瓦の音響的非破壊試験について : (2)ヤング率ー曲げ強さおよび音速ー見掛け気孔率の統計解析

概要

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Most important physical properties of refractory bricks are porosity and mechanical strength, however they are measured only by destructive test. Considering the result of the fundamental experiment in the previous paper, it is to be expected that porosity or strength can be nondestructively estimated from sound velocity of Young's modulus respectively. We have statistically analyzed them in order to know the influences of manufacturing condition or particle packing fluctuations on this regression estimate. Analysis of convariance was done in two-way layout of the forming pressure and the firing temperature or the forming pressure and the particle-size distribution. Practically, porosity or strength of schamotte brick has been found to be well estimated by sonic non-destructive testing mentioned above.
社団法人日本音響学会の論文
1962-07-30