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Forming Limit Curve FLC

Experiment to measure the materials formability/plasticity FLC by deep-drawing of several geometries according to Nakazima test. The strains are measured continuously using the Digital imaging system ARAMIS.

Cause

Using a measuring method with high efficiency and quality provides the material's formability. Test how the sheet deforms/strains in different directions before a crack appears.

Method

The stamping tests are conducted using a hydraulic press with a capacity of 1200 tons with a specially manufactured tool för FLC measurements. Measurements are done with seven geometries according to Nakazima geometries to assure a good forming limit curve. The measurements are conducted using ARAMIS which is an optical 3D deformation measuring system that analyzes, calculates, and documents strains. ARAMIS measures displacements of a stochastic pattern on the surface which is sprayed on with an aerosol, the measurement window is 0.01% up to several 100%. ARAMIS measures the deformation using two digital cameras continuously during the forming tests, providing a continuous strain map of the sample until crack. 

Deliveries

Results delivered according to the agreements.

Ordering

Order by contacts below

Facts

Service

Forming limit curve according to Nakazima test

Innovation area

Material transition

Standards

Test is based on the standard ISO/DIS 12004-2.

Price

Price on tender

Delivery time

According to agreements.

Preparations

The rolling direction should be clearly marked on the test material.

Thomas Skåre

Contact person

Thomas Skåre

Forskare

+46 10 228 48 22
thomas.skare@ri.se

Read more about Thomas

Martin Olsson

Contact person

Martin Olsson

Forskare

+46 10 228 48 21
martin.a.olsson@ri.se

Read more about Martin