# LVE: General Description¶

## Purpose¶

Application to Analyze Linear Viscoelastic Data

## Data Files¶

• The first line of the file should contain the sample parameters separated by semi-colons (;). It may contain any number of parameters which will be read and saved as file-parameter in RepTate.

• Then the data columns should appear, separated by spaces or tabs.

### .tts extension¶

Text files with .tts extension should be organised as follows:

• .tts files should contain at least the parameter values for the:

1. sample molar mass Mw,

2. temperature T.

• 3 columns separated by spaces or tabs containing respectively:

1. frequency, $$\omega$$,

2. elastic modulus, $$G'$$,

3. loss modulus $$G''$$.

Other columns will be ignored. A correct .tts file looks like:

T=-35;CTg=14.65;dx12=0;isof=true;Mw=13.5;chem=PI;PDI=1.04;
1.90165521264016E+0000      7.38023647054321E+0001      1.35152457625702E+0004     -2.99910000000000E+0001
3.01392554124040E+0000      1.99063258930248E+0002      2.14834778959042E+0004     -2.99900000000000E+0001
4.51700049635957E+0000      3.72861375546198E+0002      3.17756716623334E+0004     -3.99960000000000E+0001
...                         ...                         ...                        ...


## Views¶

### log(G’,G”(w))¶

BaseApplicationLVE.viewLogG1G2()[source]

Logarithm of the storage modulus $$\log(G'(\omega))$$ and loss modulus $$\log(G''(\omega))$$ vs $$\log(\omega)$$

### G’,G”(w)¶

BaseApplicationLVE.viewG1G2()[source]

Storage modulus $$G'(\omega)$$ and loss modulus $$G''(\omega)$$ (in logarithmic scale) vs $$\omega$$ (in logarithmic scale)

### etastar¶

BaseApplicationLVE.viewEtaStar()[source]

Complex viscosity $$\eta^*(\omega) = \sqrt{G'^2 + G''^2}/\omega$$ (in logarithmic scale) vs $$\omega$$ (in logarithmic scale)

### logetastar¶

BaseApplicationLVE.viewLogEtaStar()[source]

Logarithm of the complex viscosity $$\eta^*(\omega) = \sqrt{G'^2 + G''^2}/\omega$$ vs $$\log(\omega)$$

### delta¶

BaseApplicationLVE.viewDelta()[source]

Loss or phase angle $$\delta(\omega)=\arctan(G''/G')\cdot 180/\pi$$ (in degrees, in logarithmic scale) vs $$\omega$$ (in logarithmic scale)

### tan(delta)¶

BaseApplicationLVE.viewTanDelta()[source]

Tangent of the phase angle $$\tan(\delta(\omega))=G''/G'$$ (in logarithmic scale) vs $$\omega$$ (in logarithmic scale)

### log(tan(delta))¶

BaseApplicationLVE.viewLogTanDelta()[source]

$$\log(\tan(\delta(\omega)))=\log(G''/G')$$ vs $$\log(\omega)$$

### log(G*)¶

BaseApplicationLVE.viewLogGstar()[source]

Logarithm of the modulus of the complex viscosity $$|G^*(\omega)|=\sqrt{G'^2+G''^2}$$ vs $$\log(\omega)$$

### log(tan(delta),G*)¶

BaseApplicationLVE.viewLogtandeltaGstar()[source]

Logarithm of the tangent of the loss angle $$\tan(\delta(\omega))=G''/G'$$ vs logarithm of the modulus of the complex viscosity $$|G^*(\omega)|=\sqrt{G'^2+G''^2}$$

### delta(G*)¶

BaseApplicationLVE.viewdeltatanGstar()[source]

Loss angle $$\delta(\omega)=\arctan(G''/G')$$ vs logarithm of the modulus of the complex viscosity $$|G^*(\omega)|=\sqrt{G'^2+G''^2}$$

### J’,J”(w)¶

BaseApplicationLVE.viewJ1J2()[source]

Storage compliance $$J'(\omega)=G'/(G'^2+G''^2)$$ and loss compliance $$J''(\omega)=G''/(G'^2+G''^2)$$ (in logarithmic scale) vs $$\omega$$ (in logarithmic scale)

### Cole-Cole¶

BaseApplicationLVE.viewColeCole()[source]

Cole-Cole plot: out of phase viscosity $$\eta''(\omega)=G'(\omega)/\omega$$ vs dynamic viscosity $$\eta'(\omega)=G''(\omega)/\omega$$

### log(G’)¶

BaseApplicationLVE.viewLogG1()[source]

Logarithm of the storage modulus $$\log(G'(\omega))$$ vs $$\log(\omega)$$

### G’¶

BaseApplicationLVE.viewG1()[source]

Storage modulus $$G'(\omega)$$ (in logarithmic scale) vs $$\omega$$ (in logarithmic scale)

### log(G”)¶

BaseApplicationLVE.viewLogG2()[source]

Logarithm of the loss modulus $$\log(G''(\omega))$$ vs $$\log(\omega)$$

### G”¶

BaseApplicationLVE.viewG2()[source]

Loss modulus $$G''(\omega)$$ (in logarithmic scale) vs $$\omega$$ (in logarithmic scale)

### log(G’,G”(w),tan(delta))¶

BaseApplicationLVE.viewLogG1G2tandelta()[source]

Logarithm of the storage modulus $$\log(G'(\omega))$$, loss modulus $$\log(G''(\omega))$$ and tangent of the loss angle $$\log(\tan(\delta(\omega)))=\log(G''/G')$$ vs $$\log(\omega)$$