Crackling Noise during Slow Relaxations in Crumpled Sheets

Yoav Lahini, Shmuel M. Rubinstein, and Ariel Amir

Phys. Rev. Lett. 130, 258201 – Published 22 June 2023

Abstract

The statistics of noise emitted by ultrathin crumpled sheets is measured while they exhibit logarithmic relaxations under load. We find that the logarithmic relaxation advanced via a series of discrete, audible, micromechanical events that are log-Poisson distributed (i.e., the process becomes a Poisson process when time stamps are replaced by their logarithms). The analysis places constraints on the possible mechanisms underlying the glasslike slow relaxation and memory retention in these systems.

Received 7 November 2022
Revised 23 April 2023
Accepted 25 May 2023

DOI:https://doi.org/10.1103/PhysRevLett.130.258201

Physics Subject Headings (PhySH)

Aging Mechanical deformation Noise Stochastic processes Wrinkling

Polymers & Soft MatterStatistical Physics & Thermodynamics

Authors & Affiliations

Yoav Lahini¹, Shmuel M. Rubinstein², and Ariel Amir^3,4,*

¹Department of Condensed Matter, School of Physics and Astronomy, Tel Aviv University, Tel Aviv 69978, Israel
²The Racah Institute of Physics, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
³John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, USA
⁴Department of Complex Systems, Faculty of Physics, The Weizmann Institute of Science, Rehovot 7610001, Israel