What's New

# Improved layout

App Description

This App calculates the life (expressed as number of Cycles with probability B50) and the Damage caused by a stress Cycle.

Input data:
1. Material Ultimate Stress [MPa or ksi]
2. Maximum Cycle Stress [MPa or ksi]
3. Minimum Cycle Stress [MPa or ksi]
4. Life Target for the component [B50] - Optional -

As default value, the S-N Diagram assume 0.9 of the Ultimate Stress for the limit of 1,000 cycles [B50] and 0.45 of the Ultimate Stress for the limit of 1,000,000 cycles [B50], but these values can be freely modified.

iPhone Screenshots

(click to enlarge)

Fatigue Life Calculation S-N Curve screenshot 1 Fatigue Life Calculation S-N Curve screenshot 2 Fatigue Life Calculation S-N Curve screenshot 3 Fatigue Life Calculation S-N Curve screenshot 4 Fatigue Life Calculation S-N Curve screenshot 5

App Changes

  • December 20, 2016 Initial release
  • December 25, 2016 Price decrease: $0.99 -> FREE!
  • December 27, 2016 Price increase: FREE! -> $0.99
  • June 13, 2019 New version 1.4

Other Apps From Claudio Maffei

Hydraulic Cylinder Force Hydraulic Cylinder Force One Rod Common Stress - Strain Curves Shaft Torsional Stress 4x4 Determinant & Inverse Matrix Shaft Stress and Notch Factor Shaft Static Dimensioning Water Pump Power Calculator Shaft Keyed Joint Metals Thermal Elongation Hydraulic Power Calculator ISO Screws Basic Calculator Weight of ISO Screws