Standards Library

Interest in the study of geometry is currently enjoying a resurgence-understandably so, as the study of curves was once the playground of some very great mathematicians. However, many of the subject's more exciting aspects require a somewhat advanced mathematics background. For the "fun...

INTRODUCTION This Data Item provides crack resistance curve data and a means for estimating the growth of a crack during the application of a given load or for estimating the combination of load and given crack length that will cause fast fracture. Crack resistance curves apply to the...

INTRODUCTION AND DESCRIPTION OF THE PROBLEM Cyclic stress-strain curves describe the stress-strain behavior under cyclic loads. Usually, the cyclic stress amplitude Δσ/2 is plotted as a function of the cyclic strain amplitude Δε/2 for a defined cycle. The fact that the stress-strain response...

ESDU 85031 provides R-curves for several aluminium, steel and titanium aerospace sheet materials in SI and British (lbf, in) units on transparencies for overlaying on plots of stress intensity factor against crack length appropriate to the user's structure (matching blank grids are provided...