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Getting started

First of all, download the source code of the |matlab| toolbox.

Source code is hosted at Github.

To have more details about the use of the toolbox, please have a look to :

README.txt

How to use the GUI for "pop-in" analysis from indentation tests ?

First of all a GUI is a Graphical User Interface.

demo.m
  • Answer 'y' or 'yes' (or press 'Enter') to add path to the |matlab| search paths, using this script:
path_management.m
  • The following window opens:
./_pictures/GUI_Main_Window_empty.png

Screenshot of the main window of the PopIn toolbox.

  • Import your (nano)indentation results (.xls file obtained from MTS software with at least more than 20 indentation tests for statistics), by pressing the button 'Select file'.
  • Select the end segment (if segments exist), in order to set the maximum indentation depth.
  • Set units and criterion to detect pop-in.
  • Once the dataset is loaded and parameters set, run calculations by pressing the green button 'RUN CALCULATIONS and PLOT'.
  • Load-displacement curves and selected cumulative distribution function (cdf) are plotted respectively on the left graphic and the right graphic.
  • A picture of the main window as .png file is created and cdf fit results are stored in a .txt file when you press the button 'SAVE'.
  • Results are accessible by typing in the Matlab command window (here for 50 indentation tests) :
gui = guidata(gcf)

gui =
     config: [1x1 struct]                % config. of the GUI
     data_xls: [1x1 struct]              % details about .xls file
     handles: [1x1 struct]               % handles of the GUI = buttons, boxes...
     settings: [1x1 struct]              % settings of the GUI
     flag: [1x1 struct]                  % flags for errors, calculations
     data: [1x50 struct]                 % data cropped
     results: [50x1 struct]              % results obtained after calculations
     Hertz: [1x1 struct]                 % details about hertzian fit
     cumulativeFunction: [1x1 struct]    % cdf fit results
./_pictures/GUI_select_segment.png

File selector.

./_pictures/GUI_Main_Window.png

Plot of the load-displacement curves and the mortal Weibull cdf after loading of data.

./_pictures/GUI_Main_Window_survival.png

Plot of the load-displacement curves and the survival Weibull cdf.

./_pictures/GUI_Main_Window_chechenin.png

Plot of the load-displacement curves and the mortal modified Weibull cdf (Chechenin's model).

The YAML configuration files

Default YAML configuration files, stored in the folder yaml_config_files, are loaded automatically to set the GUI:

You have to update these YAML config. files, if you want to change indenter properties, constant parameters of models and constant parameters of the least-square method used to solve nonlinear curve-fitting and the path to your datasets.

Visit the YAML website for more informations.

Visit the YAML code for Matlab.

Links