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ReSpect infers relaxation spectra from dynamic moduli.

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This application extracts continuous and discrete relaxation spectra from dynamic viscoelastic measurements obtained from small-angle oscillatory shear experiments. This is a revised version of the original ReSpect v1.0. The changes are described in the ChangeLog section of the Readme.pdf file.

It includes bug-fixes, new features, and algorithmic changes, described in the ReadMe.pdf file.
It can be used directly from the command line or graphical user interface (GUI). Functions and their tasks are described in detail in ReadMe.pdf file, which includes an example data file.
Run the command "contSpec()" or "discSpec()" to extract the continuous relaxation spectra (CRS) or discrete relaxation spectra (DRS), respectively. To access the GUI panel, run "specgui()".
The algorithms used are described in detail in the following paper:

Takeh A, Shanbhag S: A Computer Program to Extract the Continuous and Discrete Relaxation Spectra from Dynamic Viscoelastic Measurements, Appl. Rheol. 23 (2013) 24628.

Please cite this paper if you use ReSpect and find it helpful.

Comments and Ratings (5)


jacopo (view profile)

Hi guys,

I got a problem when I load my data:

(*) Loading Data File: Gst.dat...Undefined function 'GetExpData' for input arguments of
type 'char'.

Error in contSpec (line 35)
[w Gexp] = GetExpData(par.GstFile);

Someone can explain to me what is the problem?



jay (view profile)


jay (view profile)



(*) program organization into folders
(*) extract spectrum from G(t)
(*) new algorithm to select level of smoothing
(*) sanitization of input data
(*) minor bug-fixes
(*) expanded manual


changelog included in Readme.pdf file

MATLAB Release
MATLAB 8.2 (R2013b)

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