Formability Tests for Tailor Welded BlanksFormability Tests for Tailor Welded Blanks

Contents

2

Tensile Test

LDH Test

FLC Test and Strain Measurement

Friction Test

Rectangular Cup Drawing.

Tensile Test

3

Tensile test specimen size

Dimensions in mmStandard size

(ASTM E-8)

G – Gage length 50.0±0.1

R – Radius of fillet 12.5

A – Length of reduced section 57

C – Width of grip section 20

W – Width 12.5±0.2

L- Overall length 200

B – Length of grip section 50

(a) Type 1

WELD

(a) Type 2

Results of Tensile Test

4

LDH Test

5

Punch diameter is 100mm.

Crack

FLC Test

6

FL

Co

Forming

Limit

Curve

Results of FLC Test

Strain Measurement

Friction Test

7

N

N

F

F N/

rollers

Schematic diagram of flat friction testFriction Tester

N1 N2

F1, F2 1

21

N

FFµ

Schematic diagram of drawbead friction test

Cylinerical Cup Drawing

8

Recgular Cup Drawing

9

167

160

40

40

S

weldline

Blanktype1

R12

R5

88

84

35

geometric center line

weld

C

F