Propagation law of fatigue cracks based on a stochastic model for damage accumulation. Cracks in large scale yielding and mode II cracks.
نویسندگان
چکیده
منابع مشابه
Propagation of surface fatigue cracks in human cortical bone.
An understanding of how fatigue cracks grow in bone is of importance as fatigue is thought to be the main cause of clinical stress fractures. This study presents new results on the fatigue-crack growth behavior of small surface cracks (approximately 75-1000 microm in size) in human cortical bone, and compares their growth rates with data from other published studies on the behavior of both surf...
متن کاملFATIGUE THRESHOLDS OF CRACKS RESULTING FROM IMPACT DAMAGE TO �-TiAl
Significant research has been conducted in recent years on the �-based titanium aluminide alloys. The low density of �-TiAl relative to current nickel-based superalloys, has made it an attractive candidate for use in the low-pressure turbine blades of gas turbine engines [1]. In addition to weight savings, the lower density leads to higher specific stiffness and good high temperature strength r...
متن کاملPropagation of cracks in elastic media
Throughout this paper the normal n denotes the interior normal direction; i.e., n = ( f (x1); 1)= p 1 + jf (x1)j when x approaches from above (denoted by ) and n = (f (x1); 1)= p 1 + jf (x1)j from below (denoted by ). In a recent paper [2] the present authors studied the asymptotic behavior of any solution of (1.2){(1.4) in a neighborhood of the tip X(t). Taking for simplicity t = 0 and assumin...
متن کاملDamage in elastomers: nucleation and growth of cavities, micro-cracks, and macro-cracks
The nucleation of internal cavities and their transition to cracks are examined at high spatial and temporal resolutionswithin polydimethylsiloxane (PDMS) elastomers of various cross-link densities under externally applied quasi-static mechanical loads. The focus here is on experiments where the initiation and propagation of internal damage are designed to occur in between two spherical glass b...
متن کاملSteady-state mode III cracks in a viscoelastic lattice model
We extend the Slepyan solution of the problem of a steady-state crack in an infinite ideally brittle lattice model to include dissipation in the form of Kelvin viscosity. As a demonstration of this technique, based on the Wiener-Hopf method, we apply the method to mode III cracks in a square lattice. We use this solution to find the critical velocity at which the steady-state solution becomes i...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of the Society of Materials Science, Japan
سال: 1986
ISSN: 1880-7488,0514-5163
DOI: 10.2472/jsms.35.165