ON THE USE OF GENERAL EXTREME VALUE (GEV) DISTRIBUTION IN FRACTURE OF AL-S1 ALLOYS

摘要

The use of the General Extreme Value distribution in the fracture of Al-Si alloys was demonstrated. Analysis of data from the literature showed that the size and aspect ratio of damaged Si particles in Al-Si alloys follow the Gumbel distribution. Thirteen of the fourteen datasets from the literature for size of defects on fracture surfaces of cast Al-Si alloys were also found to follow the Gumbel distribution. The use of the correct statistical distribution should improve the accuracy of fracture-mechanics based models to predict fatigue life of cast Al alloys.