Fatigue Strength of Steel Specimens with Double Notches
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概要
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The double notch in this test consists of primary and secondary notches. The secondary notch is situated at the root of the primary notch. Fatigue tests were made on specimens having such double notches. From the results of experiments, the following conclusions are obtained.<BR>The notch factor of a double notch β<SUB>K1, 2</SUB> is equal to the product of β<SUB>K1</SUB> and β<SUB>K2</SUB>, where β<SUB>K1</SUB> and β<SUB>K2</SUB> are the notch factors corresponding to the primary and secondary notches respectively. But when the sharpness of the two notches becomes close to each other, β<SUB>K1, 2</SUB> becomes less than the product of β<SUB>K1</SUB> and β<SUB>K2</SUB>. Thus designers should pay attention to the fact that the fatigue strength of the materials with double notches becomes essentially lower than that which would be expected from each notch.
- 社団法人 日本材料学会の論文
社団法人 日本材料学会 | 論文
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