Results 261 to 270 of about 3,932,887 (344)

The effects of stress triaxiality and strain rate on the fracture strain of Ti6Al4V

Engineering Fracture Mechanics, 2019
The fracture strain is known to be affected by the stress state and strain rate. To measure the fracture strain over a wide range of stress triaxiality and strain rate, a rectangular hat-shaped specimen is designed.
B. Wang, Xinran Xiao, V. Astakhov, Zhanqiang Liu   +3 more
semanticscholar   +1 more source

Fracture in strain gradient elasticity

Metals and Materials, 1998
Recent experiments have shown that the microscale material behavior is very different from that of bulk materials, and displays strong size effects when the characteristic length associated with the deformation is on the order of microns. Conventional continuum theories, however, can not predict this size dependence because they do not have an ...
K. C. Hwang, T. F. Cuo, Y. Huang, J. Y. Chen   +3 more
openaire   +1 more source

Strain rate and temperature dependent fracture of aluminum alloy 7075: Experiments and neural network modeling

, 2020
Complex structural components made from 7xxx series alloys are usually manufactured through hot stamping due to their low ductility at room temperature. With the help of a custom-made induction heating system, experiments are performed on aluminum alloy ...
K. S. Pandya, C. Roth, D. Mohr
semanticscholar   +1 more source

Nonlocal fracture criterion: Finite strains

Doklady Physics, 2002
Theory of multiple overlap of severe strains [1] allows us to analyze crack growth for finite strains of a body made of viscous elastic material on the basis of subsequently merging micropores and secondary cracks with the main crack. To do this, a criterion for the breakage of a wall between the main crack and a secondary crack or a micropore merging ...
V. A. Levin, E. M. Morozov
openaire   +1 more source

A ductile phase-field model based on degrading the fracture toughness: Theory and implementation at small strain

, 2020
A reliable prediction of structural failure is extremely important in industrial applications. The promising phase-field model has been intensively studied in fracture simulation and been validated by experiments to effectively predict crack initiation ...
B. Yin, M. Kaliske
semanticscholar   +1 more source

Strain-rate dependent fracture initiation

International Journal of Fracture, 1980
The theory of linear elastic dynamic fracture mechanics for Heaviside loading of an isolated crack is employed to formulate the response to constant strain-rate loading of a single crack. Numerical integration of the Heaviside solution is shown to lead to fracture initiation stresses that are dependent upon the imposed strain rate.
M. E. Kipp, D. E. Grady, E. P. Chen
openaire   +1 more source

Plane strain cumulative fracture

International Journal of Fracture, 1982
By analysing appropriate models, the condition for plane strain crack propagation at a constant crack tip stress intensity factor (cumulative fracture) is shown to be dependent on the amount of plastic deformation per crack extension increment, and the yield stress. The results are relevant to the problem of environmentally assisted crack growth.
openaire   +1 more source

Stress/strain variability in fractured media: a fracture geometric study

Geotechnical and Geological Engineering, 2021
The presence of natural fractures in fractured media plays a vital role in the in-situ stress state, which is predominantly influenced by tectonic stresses and local perturbations. Fracture orientation, wellbore stability/orientation, and permeability anisotropy are strongly dependent on local stress variations.
Meysam Khodaei, Ebrahim Biniaz Delijani, Ali Naghi Dehghan, Mastaneh Hajipour, Kasra Karroubi   +4 more
openaire   +1 more source

Sprains, Strains, and Fractures

Journal of Consumer Health on the Internet, 2017
ABSTRACTSprains, strains, and fractures are common in all age groups, but individuals have little or no information about what to expect until it happens to them or someone they know. These injuries can occur in a flash, but the recovery can take days, months, or sometimes even longer.
openaire   +1 more source

Determining the strain to fracture for simple shear for a wide range of sheet metals

International Journal of Mechanical Sciences, 2018
There is a particularly high degree of experimental uncertainty associated with the determination of the strain to fracture for simple shear. In most shear specimens, different stress states coexist and it is usually impossible to prove experimentally ...
C. Roth, D. Mohr
semanticscholar   +1 more source