Common Dataset for Instrumented Indentation Testing

by K. MIYAHARA

A common dataset for Instrumented Indentation Testing (IIT) is available.

Document - Background (in Japanese): dataset.pdf (updated 2022/04/01)
Dataset - Generated force-depth curves and info.pdf (in English): dataset.zip (updated 2022/04/15)
Reporting sheet - in Excel format (in English): result.xlsx (updated 2022/05/26)

This dataset contains force-depth curves of a reference specimen and two other specimens (target1 and target2).
First, please use curves of the reference specimen to calibrate frame compliance and the area function of the indenter.
Secondly, please calculate Young's modulus and indentation hardness for each specimen.
Please send output result to the dataset creator. An Excel sheet is avilable, but any form can be accepted.
Statistical report will be sent to senders once enough number of results are obtained. The name of senders will be hidden in the report.

Why is such a dataset necessary?: An indentation tester obtains force-depth curves and the obtained curves are normally analyzed by the tester itself only. This open dataset is created for testing analyzing programs and comparing output of different programs.
Are force-depth curves in the dataset obtained experimentally?: 　No, all curves are generated by a simple model.
What effect is considered in the model?: 　Not-ideal shape of indenter, frame comliance, and some noises are involved.
How are the material properties? What about testing force?: 　Please refer to the document (info.pdf) in dataset.zip.
Which file format is used?: 　The curves are in CSV format and different versions of unit and column position are available.
Which analysis method should I use for the dataset?: 　Please use your normal analysis method for instrumented indentation testing, such as ISO14577.