A dual-imaging framework for multi-scale measurements of fatigue crack evolution in metallic materials
| Autor: | Asok Ray, Eric Keller, Amrita Basak, Susheel Dharmadhikari |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Microscope Scale (ratio) Mechanical Engineering Confocal Fatigue testing 02 engineering and technology Digital microscope 021001 nanoscience & nanotechnology Industrial and Manufacturing Engineering Dual imaging law.invention Transverse plane 020303 mechanical engineering & transports 0203 mechanical engineering Mechanics of Materials law Modeling and Simulation Metallic materials General Materials Science Composite material 0210 nano-technology |
| Zdroj: | International Journal of Fatigue. 142:105922 |
| ISSN: | 0142-1123 |
| DOI: | 10.1016/j.ijfatigue.2020.105922 |
| Popis: | This paper presents a dual-imaging methodology to investigate fatigue crack initiation & propagation along the lateral and transverse directions in Al7075 flat specimens having a one-sided V-notch. The framework consists of a confocal and a digital microscope. The confocal microscope can detect the short crack initiation at a length-scale of 3 µm while the digital microscope has the capability of reliably measuring cracks at a scale of 0.5 mm. The apparatus provides a unique advantage of characterizing the multi-scale fatigue crack evolution without any significant restrictions on maximum specimen size and maximum loading or frequency. |
| Databáze: | OpenAIRE |
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