書誌事項
- タイトル別名
-
- Development of Fatigue Testing Machine for Thin Sheet Specimen and Fatigue Test for Magnesium Single Crystal
- ハクヘン シケンヘンヨウ コガタ ヒロウ シケンキ ノ カイハツ ト マグネシウムタンケッショウ ノ ヒロウ シケン
この論文をさがす
抄録
A fatigue testing machine for thin sheet specimens was developed to clarify the crystallographic orientation dependence on fatigue fracture behavior in magnesium single crystals. The size of the thin sheet specimen was 3mm in width and 0.3mm in thickness. One end of the thin sheet specimen was fixed at a voice coil of a loudspeaker and the other end was set free. A bending mode resonance occurs in the specimen due to forced vibration at the fixed end. To estimate stress amplitude, the displacement of the free end of the specimen was measured with a laser displacement meter. The stress amplitude was evaluated as the bending stress in the single cantilever. Fatigue tests were carried out with stress ratio R = –1 at room temperature in laboratory air and the frequency of the cyclic stress was 981Hz. In A-specimen whose surface plane and loading direction were (0001) and [1120], a fatigue crack propagated along [1100] at higher stress level while a crack propagated along [1210] at lower stress level. In B-specimen whose surface and loading direction were (1120) and [1100], a crack propagated partially along {1012} twin interface. As a result, fatigue life of the B-specimen was longer than that of the A-specimen. The fatigue limits of the A- and B-specimens were nearly the same, and it was estimated as 45MPa at 106∼108 cycles. The fatigue testing machine developed in this study showed the crystallographic orientation dependence on fatigue fracture behavior in magnesium single crystals.
収録刊行物
-
- 材料
-
材料 58 (8), 703-708, 2009
公益社団法人 日本材料学会
- Tweet
キーワード
詳細情報 詳細情報について
-
- CRID
- 1390001205417449600
-
- NII論文ID
- 130000133308
-
- NII書誌ID
- AN00096175
-
- ISSN
- 18807488
- 05145163
-
- NDL書誌ID
- 10413646
-
- 本文言語コード
- ja
-
- データソース種別
-
- JaLC
- NDL
- Crossref
- CiNii Articles
-
- 抄録ライセンスフラグ
- 使用不可