Indentation Measurement in Thin Plates under Bending Using 3D Digital Image Correlation
| Autor: | Elías López-Alba, Juan-Antonio Almazán-Lázaro, Francisco-Alberto Díaz-Garrido, Luis Rubio-García |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Digital image correlation
Materials science Energy balance chemistry.chemical_element 02 engineering and technology Bending lcsh:Technology lcsh:Chemistry 0203 mechanical engineering 3D Digital Image Correlation Aluminium Indentation absorbed energy General Materials Science Composite material Instrumentation lcsh:QH301-705.5 Fluid Flow and Transfer Processes Contact behavior lcsh:T Process Chemistry and Technology General Engineering Elastic energy 021001 nanoscience & nanotechnology lcsh:QC1-999 Computer Science Applications indentation 020303 mechanical engineering & transports chemistry lcsh:Biology (General) lcsh:QD1-999 lcsh:TA1-2040 Deformation (engineering) 0210 nano-technology lcsh:Engineering (General). Civil engineering (General) lcsh:Physics contact |
| Zdroj: | Applied Sciences Volume 11 Issue 6 Applied Sciences, Vol 11, Iss 2706, p 2706 (2021) |
| ISSN: | 2076-3417 |
| DOI: | 10.3390/app11062706 |
| Popis: | In the current paper, a novel experimental methodology to characterize the contact behavior on thin plates under bending is presented. The method is based on the experimental measurement of the indentation observed during contact experiments. Tests were conducted using aluminum thin plates and a steel sphere to evaluate the effect of thickness and bending during contact. For this purpose, a non-contact optical technique, 3D Digital Image Correlation (3D-DIC), has been employed to measure the out-of-plane displacements experienced at the rear face of the specimens (opposite where the contact is occurring). An indirect measurement of the experimental contact law is obtained for different plate thicknesses (2 mm, 3 mm, 4 mm, 5 mm and 6 mm) as the contact load increases. An energy balance performed during contact experiments made it possible to evaluate and quantify the applied energy to generate bending and contact deformation. When the specimen thickness increases from 2 mm to 6 mm, contact deformation reaches higher values from the total applied energy. In addition, it is also possible to evaluate the portion of the elastically recovered energy for contact and bending deformation during the unloading. It has been observed that thicker specimens show a lower elastic energy recovery due to bending and a higher elastic energy recovery due to contact. Results clearly show how the ratio between absorbed and applied energy changes as the specimen thickness increases, highlighting the relevance of the proposed method for the characterization of contact behavior in thin plates. |
| Databáze: | OpenAIRE |
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