Page 377 - Handbook of Materials Failure Analysis

3 Case Study: Fatigue Life Assessment of an Automotive Demo-Structure 375

Table 14.2 Constants of the Energy-Life Equation for Different Magnesium
Alloys [10]
AZ31B AM30 AM60B
P 5257 925 844
q 2.391 2.576 3.619

75
30

A A
30

LSPR
t 2 t 1

Section A-A
Dimension are in (mm).
FIGURE 14.13
Geometry of LSPR specimen [57].

Table 14.3 Stack Composition of LSPR Specimens [57]
Top Sheet— Bottom Sheet—
Specimen Thickness Thickness Application

AM30- AM30—2.5 mm AM60B—2 mm Lower rail to shock tower
AM60B
AM60B- AM60B—2 mm AZ31B—2 mm Shock tower to upper rail
AZ31B
AZ31B- AZ31B—2 mm AZ31B—2 mm Upper rail (joining the two
AZ31B pieces)