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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2024.3
- 수록면
- 714 - 725 (12page)
- DOI
- 10.1007/s12540-023-01535-2
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초록· 키워드
오류제보하기
In contrast with elastic deflection in instrumented indentation, the accurate estimation of plastic pile-up height aroundthe indenter in metallic materials has been a challenge due to their diverse plastic deformation behavior arising from theirmechanical properties. Previous research has predominantly relied on empirical relations derived from a limited number ofindentation parameters from the force–displacement curve to estimate pile-up height. In this study, we suggest an advancedmethod for predicting contact morphology and estimating tensile properties based on spherical indentation. Indentationcontact depth is estimated using an analytical model with stress field from expanding cavity model, geometric shape of theindenter, and plastic migration of indented volume during spherical indentation, without relying on empirical relations.
Experimental observations confirm that the model accurately predicts the pileup height for various metallic materials. Themodel is applied to estimate representative stress–strain curves using the obtained contact morphology. The results indicatea notable improvement in the agreement with tension tests conducted on samples exhibiting power-law and linear-hardeningbehavior, even at respectively small strains.
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