Fatigue Crack Growth Thresholds, Endurance Limits, and Design
Editor(s): J. C. Newman Jr, R. S. Piascik
Leading experts provide 24 papers addressing four areas pertinent to fatigue crack growth thresholds: mechanisms, test procedures, analysis, and applications.
Mechanisms: Three mechanisms that influence thresholds are discussed including: crack-tip closure, environment, and Kmax effects. A simplistic four-parameter model that describes FCG threshold behavior of elastic-plastic materials is also presented. Test Procedures: Eight papers focus on loading and specimen-type effects with research showing that the resistance-curve (R-curve) method to determine the threshold for fatigue-crack growth should allow more reliable application of ΔKth values to engineering problems. Analysis: Three papers analyze the behavior of fatigue cracks in the threshold regime using several different analysis methods. These methods were the elastic-plastic finite-element method (FEM), the Dugdale-type mode, the BCS (Bilby, Cottrell and Swinden) model, and a discrete-dislocation model. Applications: Nine papers address applications of threshold concepts and endurance limits to aerospace and structural materials. The impact of a number of testing variables on the measurement of fatigue-crack-growth thresholds, in particular ASTM E 647, Test Method for Measurement of Fatigue Crack Growth Rates is also discussed.Table of Contents
J Petit, G Henaff, C Sarrazin-Baudoux
A Hadrboletz, B Weiss, R Stickler
H-J Schindler
JA Newman, WT Riddell, RS Piascik
G Marci
B Tabernig, P Powell, R Pippan
SW Smith, RS Piascik
AJ McEvily, M Ohashi, R Shover, A DeCarmine
C Bathias
KR Garr, GC Hresko
HO Liknes, RR Stephens
A Varvani-Farahani, TH Topper
RC McClung
JC Newman
FO Riemelmoser, R Pippan
RW Bush, JK Donald, RJ Bucci
MJ Caton, JW Jones, JE Allison
Y Akiniwa, K Tanaka
EJ Czyryca
C Sarrazin-Baudoux, Y Chabanne, J Petit
D Taylor, G Wang
P Albrecht, WJ Wright
R Lindström, P Lidar, B Rosborg
G Marquis, R Rabb, L Siivonen