Abstract
Applications of resonace method and supersonic pulse technique to the non-destructive testing of refractory bricks are studied. Elastic properties of bricks are measured by means of these sonic methods. In this parer, as the fundamental experiment, Young's modulus, sound velocity, apparent porosity and true porosity of schamotte brick specimen which is made under various manufacturing conditions or of various particle-size distributions are measured and correlationships between these physical quantities are analyzed.
