Abstract

We have developed a single-edge notched beam technique using a very sharp V-notch for evaluating fracture toughness of structural ceramics. The technique has several advantages such as simple testing procedures, applicability to a wide variety of materials and suitability to high-temperature testing. Results obtained by the technique agree quite well with the values of SEPB (Single Edge Precracked Beam) technique for several ceramics by using the modification proposed by Takahashi et al. except for alumina.

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