Determination of the stress acting on the individual cells of open-cell stainless steel foams

M. S. Aly, Y. Fukasawa, K. Morishita, H. Okuda, S. Ochiai, K. Kato, K. Kita, K. Honma

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

2 被引用数 (Scopus)

抄録

A series of tensile tests was performed on powder metallurgical processed open cell stainless steel foams with different densities and average pore sizes of 150, 300 and 600 μm, respectively to examine the effect of porosity as well as the cell wall thickness on the foams tensile mechanical properties. Moreover, a state of the art strain measuring device, which is not in touch with the sample's surface, was used to determine the strain and the other tensile properties accurately. The function of this device is based on the usage of a laser (CCD) camera. The laser (CCD) camera monitors the dimensional changes during loading by detecting the positional changes of special markers clipped on the sample's surface representing the gauge length. Thus we can avoid the constraint effects caused by using the conventional extensometers of contact type. By using the Weibull distribution function, the average fracture stress of the individual foam cells was statistically measured. The results showed a strong dependence of foams' mechanical properties on their porosity and thickness of their cell walls. Foams with small pores displayed higher mechanical properties than foams with larger ones. Foams with thick cell walls failed at larger stresses than foams having thin cell walls or struts.

本文言語英語
ホスト出版物のタイトルMetFoam 2007 - Proceedings of the 5th International Conference on Porous Metals and Metallic Foams
ページ157-160
ページ数4
出版ステータス出版済み - 11 27 2008
外部発表はい
イベント5th International Conference on Porous Metals and Metallic Foams, MetFoam 2007 - Montreal, QC, カナダ
継続期間: 9 5 20089 7 2008

出版物シリーズ

名前MetFoam 2007 - Proceedings of the 5th International Conference on Porous Metals and Metallic Foams

その他

その他5th International Conference on Porous Metals and Metallic Foams, MetFoam 2007
Countryカナダ
CityMontreal, QC
Period9/5/089/7/08

All Science Journal Classification (ASJC) codes

  • Metals and Alloys

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