INSTRUMENTED INDENTATION TEST FOR HIGH-TEMPERATURE SPECIMEN |
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| Takeshi Sawa, Masaharu Tsujii, Masaru Kawazoe |
- Abstract:
- Concerning the specimen heating table attached to an instrumented indentation testing machine, one of the hardness testing machines, for realizing the hardness test of heated specimen, thermal influences to the instrumented indentation testing machine by attaching the specimen heating table have been examined. Consequently, it has been clarified that test result errors are mainly induced by the fact that the thermal expansion by the increase in temperature of the indenter (the metal part fixing the diamond tip) is added to the measured indentation depth, so that the accurate indentation depth cannot be measured. Furthermore, it has been considered that the increase in temperature of the indenter is mainly caused by the thermal transfer (thermal conduction) while the indenter contacts with the hightemperature specimen, and it has been clarified that the behavior of temperature change of the indenter depends on specimen materials and testing conditions. In this paper, newly invented measures for obtaining correct indentation depth in high-temperature tests are described.
- Keywords:
- instrumented indentation test, high-temperature environment, thermal expansion, hardness
- Download:
- PWC-2006-TC5-008u.pdf
- DOI:
- -
- Event details
- Event name:
- XVIII IMEKO World Congress
- Title:
Metrology for a Sustainable Development
- Place:
- Rio de Janeiro, BRAZIL
- Time:
- 17 September 2006 - 22 September 2006