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Limiting Dome Height (LDH) Test

The limiting dome height test, also known as LDH test is a method used to determine sheet metal forming properties.

The limiting dome height test is used to determine the ductility of sheet metals and is comparable to a Nakajima test. A hemispherical die strains the clamped specimen until break. Testing is performed on specimens with various thicknesses.

For each specimen the maximum attainable dome height and strain at break are determined.

Additional Earing Tests

Earing test on metal/aluminum

The earing test on metallic materials (ISO 11531) and aluminum (EN 1669) is used for determining ear formation.
to Earing test on metal/aluminum

Earing test to Fukui

For the Fukui conical cup test, conical cups are stretched and pulled
to Earing test to Fukui

Square cup test

For the square cup test, cups are drawn with square bases.
to Square cup test

Limiting Drawing Ratio Test (LDR)

For the limiting drawing ratio (LDR) test, or Swift deep drawing cup test, the maximum ratio of circular blank to die diameter is evaluated.
to Limiting Drawing Ratio Test (LDR)

Deep drawing tear-off test to Engelhardt

For the deep drawing and tear-off test to Engelhardt the necessary drawing force and force required to cause bottom cracks during the earing test are measured.
to Deep drawing tear-off test to Engelhardt

Related Products for the Performance of the Limiting Dome Height ((LDH) Test