Tensile test – Test rig

Select the specimen material and set the initial gauge length and specimen diameter. Then click on Start experiment.

The material model accounts for the influence of specimen geometry on elongation after fracture. Virtual results are not sent to the DataPortal.

material Initial gauge length L₀ / mm Specimen diameter d₀ / mm

Measurement noise i

Spread of the characteristic values i

Real test details

Specimen material

Scanning a specimen sets the material to that of the scanned specimen.

Student group (optional)

Data type

Primary data F, ΔL Secondary data σ, ε

Specimen shape

Round circular cross section (d₀) Flat Rectangular cross section (b₀, a₀)

Standard specimen type

Specimen geometry

Diameter d₀ / mm Initial gauge length L₀ / mm

2CSV file

Drop CSV here or click

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Separator comma, semicolon or tab · Decimal point or comma · Units in the header optional (e.g. F [N]).

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Characteristic-value analysis

experiment completed. Select the data source for the analysis:

Step 1 / 4

The testing machine only measures force F and change in length ΔL. To make materials comparable, we calculate stress σ and strain ε by:

① Initial cross section

② Stress ③ Strain

Hooke's-law line

E / MPa

Select measured value at the curve maximum

Measured value no. R_m = —

Parallel for A_g

A_g / %

Position Offset Line — Strain Offset for R_p0.2? 0,00 %

Offset / %

Select measured value at yield strength

Measured value no. R_p0.2 = —

Choose measured value in the Lüders Plateau

Measured value no. R_eL = —

Parallel for elongation after fracture

A / %

Start an experiment to determine the material properties interactively.

Force–extension diagram — force F versus extension ΔL

Material diagram — stress σ versus strain ε

Saved experiments

No experiments saved yet. Run in tab Experiment a tensile test and click on Save experiment.

#	material	Data source i	Model	L₀ / mm i	d₀ / mm i	E / MPa i	R_eH / R_p0.2 / MPa i	R_eL / MPa i	R_m / MPa i	A_g / % i	A / % i	Date	Download	Delete

Save at least one experiment to compare curves.

Characteristic values of the visible experiments

	Experiment	Source	E / GPa	R_eH / R_p0.2 / MPa	R_eL / MPa	R_m / MPa	A_g / %	A / %

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Saved charts

No charts saved yet. In the Comparison tab, create a chart and click Save diagram.

Stored experiments (Ontology DB)

	Name	Date	Material	R_m / MPa	E / GPa	Matrikelnr.

Ontology visualization

Export ontology

Each saved test has its own TTL file. The compact view groups related information; the full RDF data remain available in the expert view and exports.

Select a test or the combined overview.

SPARQL query (experts)

Queries run over the entire ontology (all experiments); GRAPH ?g { … } addresses individual experiments.

Save / load workspace

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Virtual tensile test (with material model)