Issue 75

V. Landersheim et alii, Fracture and Structural Integrity, 75 (2026) 297-314; DOI: 10.3221/IGF-ESIS.75.21

Angle  (°)

Thickness t (mm)

Stiffness (N/mm)

1.5 1.5 3.0 3.0

30

1083 ± 35

100

40.23 ± 0.86 5831 ± 137

30

100 262.2 ± 5.6 Table 2: Average spring stiffness of the tested springs per sheet thickness and angular position of the slider.

Figure 9: Picture of a test specimen with a cracked spring arm (top). Microscopic image of the section marked in red (bottom) with a clearly recognizable crack along the width of the spring.

Figure 10: Load-life curves of the four test series (failure criterion 10% reduction in force).

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