BUP sheet metal testing machines
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.