J041042 ハニカムコアサンドイッチパネルの局部圧縮疲労特性に関する研究 : セル壁厚さの影響([J04104]工業材料の変形と強度特性及びそのモデル化(4))

概要

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Local compression fatigue tests of peripherally clamped the honeycomb core sandwich panel (hereafter, HSP for brevity) in consideration of usage condition as a floor panel were carried out. In the fatigue tests, the fatigue property of HSP was investigated by changing the cell wall thickness, the thickness of face sheet contacted the indenter and the maximum load value. As a result, when the thickness of the cell wall is 0.05mm, the fracture pattern changed from the tensile type to shearing type with the increase in the thickness of face sheet contacted the indenter. In the transitional region, the dent type existed. However, when the thickness of cell wall is 0.08mm, the fracture pattern of circumference type was observed instead of the dent type. This is because the increase of buckling strength of cell wall constrained the formation of dent. This situation resulted in the increase in the shearing stress around the dent.
2011-09-11