Dynamic Fracture Behavior of Magnesium Alloy

Abstract:

Static and dynamic loading fracture experiments were conducted on magnesium alloy under equal and unequal biaxial stress. Cross shape specimens with a crack on their center were used for tests. Fracture behavior was observed by two methods; the caustic and the one point gauge method. From the observation, the stress intensity factors and the fracture toughness values were calculated. It was found that the one point gauge method was not suitable for calculating the stress intensity factor with a strain gauge widely available. The fracture toughness values obtained under equal biaxial stress were 1.2~2.3 times greater than those of magnesium alloy naturally inherited. Moreover, plate thickness was negatively related to the fracture toughness value.

• Periodical: Key Engineering Materials (Volumes 353-358)
• Pages: 110-115
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.353-358.110
• Online since: September 2007
• Authors: Akira Shimamoto, Do Yeon Hwang, Ryo Kubota, Fumio Nogata
• Keywords: Caustic Method, Dynamic Fracture, Fracture Toughness, Magnesium Alloy, Stress Intensity Factor (SIF)

References

[1] T. Tanabe, Journal of the Japan Society of Mechanical Engineers, Vol. 56-411 (1953), pp.300-301.

[2] M. Miyakawa, Journal of the Japan Society of Mechanical Engineers, Vol. 60-464 (1957), p.936.

[3] M. Miyakawa, Journal of the Japan Society of Mechanical Engineers, Vol. 62-490 (1959), pp.1680-1682.

[4] M. Nisimura, Journal of the Japan Society of Mechanical Engineers, Vol. 63-499 (1960), pp.1216-1217.

[5] F. Nagai, Journal of the Japan Society of Mechanical Engineers, Vol. 72-608 (1969), pp.1288-1289.

[6] S. Kodama, Journal of the Japan Society of Mechanical Engineers, Vol. 64-514 (1961), p.1643.

[7] .

[7] K. Nisiyama, S. Tanimura, Journal of the Japan Society of Mechanical Engineers, Vol. 74-633 (1971), p.1357.

[8] H. Asada, Journal of the Japan Society of Mechanical Engineers, Vol. 65-527 (1962), pp.1650-1656.

[9] S. Hukai, Journal of the Japan Society of Mechanical Engineers, Vol. 44-288 (1941), p.199.

[10] K. Ohtoshi, M. Katsuta, Journal of Japan Institute of Light Metals, Vol. 51-1 (2001), pp.534-538.

[11] S. Kurosaki, S. Fukuda, Journal of the Japan Society of Mechanical Engineers, Vol. 59-565 (1993), pp.2143-2148.

[12] S. Takahashi, T. Shimizu, Science of Machine, Vol. 37-4 (1985), pp.485-490.

[13] S. Takahashi, et al.: Photo Mechanics, Sankaido Inc., Japan, (1997), p.94.

[14] K. Satoh, et al., The Society of Naval Architects of Japan, Vol. 159, (1986), pp.340-349.