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Thinning Strain Analysis Procedures

Course Type: 

OnLine Course


List price: $50.00

Instructor: 

Danny Schaeffler, Ph.D


Description: 

Thinning Strain Analysis (TSA) and Circle Grid Strain Analysis (CGSA) are powerful tools to determine if your forming process and sheet metal choice are sufficiently robust to handle the inherent variations of metal properties. Properly done, TSA and CGSA can offer you valuable insight into the forming capabilities of your seleced sheet metal. Improper technique can lead you to make costly decisions.

The easiest way to check your measurements is to compare the thickness calculated from your circle-grid surface-strain measurements to thickness measurements made using an ultrasonic thickness (UT) gauge. But, there is so much more information you can get from your part and process with just thickness measurements!

TSA is easier to perform than CGSA and requires very little operator training. TSA can be performed on any formed part, without special preparation of the blank or tools before stamping, and it requires less stamping-plant involvement and assistance. Production stamping schedules are less likely to be disrupted when a TSA is needed, and TSA can be used when is it not practical to place circle grids on a blank— such as for parts stamped on a progressive die or in the central portion of a very large blank.

What You Will Learn: 

This class will describe how thinning strain analysis can be used in conjunction with - and as a replacement for - circle grid strain analysis. The steps to convert your TSA measurements to plot on a conventional CGSA FLD will be covered.