TY - JOUR
T1 - How Supertough Gels Break
AU - Kolvin, Itamar
AU - Kolinski, John M.
AU - Gong, Jian Ping
AU - Fineberg, Jay
N1 - Publisher Copyright:
© 2018 American Physical Society.
PY - 2018/9/26
Y1 - 2018/9/26
N2 - Fracture of highly stretched materials challenges our view of how things break. We directly visualize rupture of tough double-network gels at >50% strain. During fracture, crack tip shapes obey a x∼y1.6 power law, in contrast to the parabolic profile observed in low-strain cracks. A new length scale â.," emerges from the power law; we show that â.," scales directly with the stored elastic energy and diverges when the crack velocity approaches the shear wave speed. Our results show that double-network gels undergo brittle fracture and provide a testing ground for large-strain fracture mechanics.
AB - Fracture of highly stretched materials challenges our view of how things break. We directly visualize rupture of tough double-network gels at >50% strain. During fracture, crack tip shapes obey a x∼y1.6 power law, in contrast to the parabolic profile observed in low-strain cracks. A new length scale â.," emerges from the power law; we show that â.," scales directly with the stored elastic energy and diverges when the crack velocity approaches the shear wave speed. Our results show that double-network gels undergo brittle fracture and provide a testing ground for large-strain fracture mechanics.
UR - http://www.scopus.com/inward/record.url?scp=85054038414&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.121.135501
DO - 10.1103/PhysRevLett.121.135501
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C2 - 30312088
AN - SCOPUS:85054038414
SN - 0031-9007
VL - 121
JO - Physical Review Letters
JF - Physical Review Letters
IS - 13
M1 - 135501
ER -