Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Effect of grain disorientation on early fatigue crack propagation in
  face-centred-cubic polycristals: A three-dimensional dislocation dynamics
  investigation   Three-dimensional dislocation dynamics simulations are used to study
micro-crack interaction with the first micro-structural barrier in face-centred
cubic bi-crystals loaded in high cycle fatigue conditions. In the examined
configuration, we assumed that micro-crack transmission occurs due to surface
relief growth in the secondary grain ahead of the primary crack. This indirect
transmission mechanism is shown to strongly depend on grain-1/grain-2
disorientation. For instance, small grain disorientation induces plastic strain
localisation ahead of the crack and faster transmission through the first
barrier. Conversely, large grain-1/grain-2 disorientation induces plastic
strain spreading similar to crack tip blunting yielding slower indirect
transmission. A semi-analytical micro-model is developed based on the present
simulation results and complementary experimental observations highlighting the
original notion of first-barrier compliance. The model captures well known
experimental trends including effects of: grain-size, grain disorientation and
micro-crack retardation at the first barrier.

29
The categories of this paper are: funct-an
30
The categories of this paper are: q-alg
15
The categories of this paper are: nucl-ex
9
The categories of this paper are: nlin
13
The categories of this paper are: quant-ph
32
The categories of this paper are: atom-ph
8
The categories of this paper are: hep-ex
31
The categories of this paper are: ao-sci
1
The categories of this paper are: cs
35
The categories of this paper are: mtrl-th
34
The categories of this paper are: chem-ph
3
The categories of this paper are: physics
2
The categories of this paper are: math
37
The categories of this paper are: supr-con
7
The categories of this paper are: hep-th
20
The categories of this paper are: acc-phys