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本文在Alberto Carpinteri研究集合材料(Aggregative Materials)断裂试验缺口敏感性的基础上,得到了圆环形裂纹圆柱试样的脆性指数(Brittleness number)、裂纹扩展力、极限强度破坏力的关系曲线。分析表明,用脆性指数理论研究铸镁合金及其它金属材料的断裂试验是合适的。
Based on Alberto Carpinteri’s research on the notch sensitivity of Aggregative Materials fracture test, the curves of Brittleness number, crack propagation force and ultimate strength destructiveness of circular cracked cylindrical specimens are obtained. Analysis shows that brittleness index theory of magnesium alloy castings and other metal materials fracture test is appropriate.