On determination of elastic modulus and indentation hardness by instrumented spherical indentation: influence of surface roughness and correction method
Although, surface roughness can influence the determination of elastic moduli and indentation hardness to some extent by instrumented spherical indentation test, limited work has been done to quantitatively reveal and minimize these influences. In the present work, through a large number of finite e...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2023-01-01
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| Series: | Materials Research Express |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/2053-1591/acebbb |
| _version_ | 1827871589169889280 |
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| author | Guangjian Peng Yu Liu Fenglei Xu Hanyang Jiang Weifeng Jiang Taihua Zhang |
| author_facet | Guangjian Peng Yu Liu Fenglei Xu Hanyang Jiang Weifeng Jiang Taihua Zhang |
| author_sort | Guangjian Peng |
| collection | DOAJ |
| description | Although, surface roughness can influence the determination of elastic moduli and indentation hardness to some extent by instrumented spherical indentation test, limited work has been done to quantitatively reveal and minimize these influences. In the present work, through a large number of finite element (FE) simulations and analyses, we clarified the evolution trend of determined elastic moduli and indentation hardness corresponding to different normalized indentation depths ( h / R ) and normalized roughness ( S _q / R ). On this basis, an area correction method was proposed to improve the measurement accuracy in the elastic moduli and indentation hardness. The FE results show that, with the newly proposed correction method, the maximum relative error in determined elastic moduli is reduced from about ±7% to ±2%, and that in the determined indentation hardness is reduced from about ±13% to ±5%, when S _q / R ≤ 2.2 × 10 ^−3 and h / R = 5%. Applications were then illustrated on four typical metallic materials (i.e., AA 7075, AA 2014, steel 316 L, and copper T2). The experimental results demonstrate that the proposed correction method is able to mitigate the effects of surface roughness on the determination of elastic moduli and indentation hardness to obtain more correct results. |
| first_indexed | 2024-03-12T16:13:16Z |
| format | Article |
| id | doaj.art-3e22e96e90124be8a8662a192ea9c3e1 |
| institution | Directory Open Access Journal |
| issn | 2053-1591 |
| language | English |
| last_indexed | 2024-03-12T16:13:16Z |
| publishDate | 2023-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj.art-3e22e96e90124be8a8662a192ea9c3e12023-08-09T10:36:08ZengIOP PublishingMaterials Research Express2053-15912023-01-0110808650310.1088/2053-1591/acebbbOn determination of elastic modulus and indentation hardness by instrumented spherical indentation: influence of surface roughness and correction methodGuangjian Peng0https://orcid.org/0000-0002-6189-9174Yu Liu1https://orcid.org/0009-0000-2355-5576Fenglei Xu2Hanyang Jiang3https://orcid.org/0000-0003-4386-4186Weifeng Jiang4Taihua Zhang5College of Mechanical Engineering, Zhejiang University of Technology , Hangzhou 310023, People’s Republic of ChinaCollege of Mechanical Engineering, Zhejiang University of Technology , Hangzhou 310023, People’s Republic of ChinaSchool of Mechanical Engineering, Anhui Polytechnic University , Wuhu 241000, People’s Republic of ChinaCollege of Mechanical Engineering, Zhejiang University of Technology , Hangzhou 310023, People’s Republic of ChinaCollege of Mechanical Engineering, Zhejiang University of Technology , Hangzhou 310023, People’s Republic of ChinaInstitute of Solid Mechanics, Beihang University , Beijing 100191, People’s Republic of ChinaAlthough, surface roughness can influence the determination of elastic moduli and indentation hardness to some extent by instrumented spherical indentation test, limited work has been done to quantitatively reveal and minimize these influences. In the present work, through a large number of finite element (FE) simulations and analyses, we clarified the evolution trend of determined elastic moduli and indentation hardness corresponding to different normalized indentation depths ( h / R ) and normalized roughness ( S _q / R ). On this basis, an area correction method was proposed to improve the measurement accuracy in the elastic moduli and indentation hardness. The FE results show that, with the newly proposed correction method, the maximum relative error in determined elastic moduli is reduced from about ±7% to ±2%, and that in the determined indentation hardness is reduced from about ±13% to ±5%, when S _q / R ≤ 2.2 × 10 ^−3 and h / R = 5%. Applications were then illustrated on four typical metallic materials (i.e., AA 7075, AA 2014, steel 316 L, and copper T2). The experimental results demonstrate that the proposed correction method is able to mitigate the effects of surface roughness on the determination of elastic moduli and indentation hardness to obtain more correct results.https://doi.org/10.1088/2053-1591/acebbbsurface roughnessarea correction methodspherical indentationelastic modulusindentation hardness |
| spellingShingle | Guangjian Peng Yu Liu Fenglei Xu Hanyang Jiang Weifeng Jiang Taihua Zhang On determination of elastic modulus and indentation hardness by instrumented spherical indentation: influence of surface roughness and correction method Materials Research Express surface roughness area correction method spherical indentation elastic modulus indentation hardness |
| title | On determination of elastic modulus and indentation hardness by instrumented spherical indentation: influence of surface roughness and correction method |
| title_full | On determination of elastic modulus and indentation hardness by instrumented spherical indentation: influence of surface roughness and correction method |
| title_fullStr | On determination of elastic modulus and indentation hardness by instrumented spherical indentation: influence of surface roughness and correction method |
| title_full_unstemmed | On determination of elastic modulus and indentation hardness by instrumented spherical indentation: influence of surface roughness and correction method |
| title_short | On determination of elastic modulus and indentation hardness by instrumented spherical indentation: influence of surface roughness and correction method |
| title_sort | on determination of elastic modulus and indentation hardness by instrumented spherical indentation influence of surface roughness and correction method |
| topic | surface roughness area correction method spherical indentation elastic modulus indentation hardness |
| url | https://doi.org/10.1088/2053-1591/acebbb |
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