A Load-Based Multiple-Partial Unloading Micro-Indentation Technique for Mechanical Property Evaluation
A load-based multiple-partial unloading microindentation technique has been developed for evaluating mechanical properties of materials. Comparing to the current prevailing nano/micro-indentation methods, which require precise measurements of the indentation depth and load, the proposed technique only measures indentation load and the overall indentation displacement (i.e. including displacement of the loading apparatus). Coupled with a multiple-partial unloading procedure during the indentation process, this technique results in a load-depth sensing indentation system capable of determining Young’s modulus of metallic alloys with flat, tubular, or curved architectures. Test results show consistent and correct elastic modulus values when performing indentation tests on standard alloys such as steel, aluminum, bronze, and single crystal superalloys. The proposed micro-indentation technique has led to the development of a portable loaddepth sensing indentation system capable of on-site, in-situ material property measurement.
- Research Organization:
- National Energy Technology Laboratory - In-house Research; National Energy Technology Laboratory (NETL), Pittsburgh, PA, and Morgantown, WV (United States)
- Sponsoring Organization:
- USDOE Assistant Secretary for Fossil Energy (FE)
- OSTI ID:
- 1015336
- Report Number(s):
- NETL-TPR-2246
- Journal Information:
- Society for Experimental Mechanics 2009, Journal Name: Society for Experimental Mechanics 2009 Journal Issue: 6 Vol. 50
- Publisher:
- Society for Experimental Mechanics
- Country of Publication:
- United States
- Language:
- English
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