A Study on Factor of Experimental Method　-Effect of Experimental Conditions on Transverse Strength-

Abstract

Effects of testing conditions;length of supports, width and thickness of specimens, crosshead speeds and polishing methods were evaluated. As a result, it was demonstrated that each testing condition except width influenced the value of bending strength in three-point loading. Values for bending strength and S.D. increased when the span of specimens was less than seven times the thickness and/or width. Values for bending strengths increased when the thickness increased, cross head speeds increased and roughness of specimens decreased.