Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Crackling dynamics in the mechanical response of knitted fabrics,
  Version 2   Crackling noise, which occurs in a wide range of situations, is characterized
by discrete events of various sizes, often correlated in the form of
avalanches. We report experimental evidence that the mechanical response of
knitted fabric displays such broadly distributed events both in the force
signal and in the deformation field, with statistics analogous to that of
earthquakes or soft amorphous materials. A knit consists of a regular network
of frictional contacts, linked by the elasticity of the yarn. When deformed,
the fabric displays spatially extended avalanche-like yielding events resulting
from collective inter-yarn contact slips. We measure the size distribution of
these avalanches, at the stitch level from the analysis of non-elastic
displacement fields, and externally from force fluctuations. The two
measurements yield consistent power law distributions reminiscent of those
found in other avalanching systems. Our study shows that a knitted fabric is
not only a thread-based metamaterial with highly sought after mechanical
properties, but also an original, model system, with topologically protected
structural order, where intermittent, scale-invariant response emerges from
minimal ingredients, and thus a significant landmark in the study of
out-of-equilibrium universality.

29
The categories of this paper are: funct-an
5
The categories of this paper are: gr-qc
20
The categories of this paper are: acc-phys
27
The categories of this paper are: comp-gas
36
The categories of this paper are: cmp-lg
6
The categories of this paper are: astro-ph
23
The categories of this paper are: solv-int
14
The categories of this paper are: math-ph
1
The categories of this paper are: cs
30
The categories of this paper are: q-alg
15
The categories of this paper are: nucl-ex
19
The categories of this paper are: eess
33
The categories of this paper are: plasm-ph
34
The categories of this paper are: chem-ph
35
The categories of this paper are: mtrl-th
8
The categories of this paper are: hep-ex