Issue 78

F. Veschi et alii, Fracture and Structural Integrity, 78 (2026) 44-73; DOI: 10.3221/IGF-ESIS.78.04

Number of Zero-Upcrossings per second



0 

Peak Rate

p 

Peak Rate of a Sine on Random Signal

ν pSoR

Damping Ratio

ξ

Standard Deviation of a Zero Mean Stationary Gaussian Signal Root Mean Square Value of the Random Stress Component

x 

, s r 

Root Mean Square Value of the SoR Signal

SoR  , Z r 

Root Mean Square Value of the Random Component of the Relative Displacement Response Root Mean Square Value of an SDOF System’s Relative Displacement Response Root Mean Square Value of the Velocity of an SDOF System’s Relative Displacement Response Root Mean Square Value of the Acceleration of an SDOF System’s Relative Displacement Response  Characteristic Function of a PDF x  Characteristic Function of the PDF of a Gaussian Random Signal y  Characteristic Function of the PDF of a Sinusoidal Signal z  Characteristic Function of the PDF of a Sine on Random Signal  Phase of a Sinusoidal Signal ω Angular Frequency 0 ω Natural Angular Frequency ω S Angular Frequency of a Sinusoidal Signal Z  Z   ¨ Z 

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