This standard specifies the laboratory determination method for forming limit diagram (FLD) of sheet metal. This standard applies to thin metal plates with a thickness of 0.2 to 3.0 mm.
GB/T 15825.8-1995 history
2008GB/T 15825.8-2008 Sheet metal formability and test methods.Part 8:Guidelines for the determination of forming-limit diagrams
1995GB/T 15825.8-1995 Sheet metal formability and test methods--Forming limit diagram (FLD) test