...Y. Yamada; J. C. Newman, Jr. Fatigue-crack-growth-rate tests on compact specimens have been made on a variety of materials (2024-T3, 2324-T39, 7050-T7451, 4340 steel, and Inconel-718) over a wide range in stress ratios from 0.1 to 0.9 (and 0.95 in some cases) and several K max test conditions. Test...

...J. C. Newman, Jr; B. M. Ziegler; J. W. Shaw; T. S. Cordes; D. J. Lingenfelser Eccentrically-loaded single-edge crack tension, ESE(T), specimens made of A36 structural steel were tested over a wide range in stress ratios (R=0.1 and 0.7) in laboratory air. Two test methods were used: (1) ASTM...

...Jessica Delacroix; Jean-Yves Buffiere; Siegfried Fouvry; Armelle Danielou The influence of microstructure on the crack nucleation and growth under fatigue and fretting loadings was investigated on two different Al-Cu-Li alloys used for aerospace applications (2050-T8 and 2196-T8) and containing...

... damage have been validated with the standing contact fatigue testing. KEYWORDS: surface induction hardening, case depth, static capacity, slewing bearings, plastic indentation, core crush, cracks, defect tolerance Introduction Large-size slewing bearings are usually surface hardened by means of induction...

...A Neville A high stress causes development of cracks, which may fracture aggregate particles or skirt around them. Numerous factors influence the path taken by a crack. No direct studies are available, but the relevant factors are: properties of the parent rock; shape, size, and texture of coarse...

...JC Newman, Jr; EP Phillips The present paper is concerned with the application of a plasticity-induced crack-closure model, FASTRAN, to predict fatigue-crack growth under various load histories in a thin-sheet Ti-62222 STA titanium alloy. This alloy was a leading candidate for a metallic High-Speed...