TY - JOUR

T1 - Effect of mechanical loading history on fatigue crack growth of non-crystallizing rubber

AU - Schieppati, Jacopo

AU - Schrittesser, Bernd

AU - Wondracek, Alfred

AU - Robin, Stefan

AU - Holzner, Armin

AU - Pinter, Gerald

N1 - Rubbers possess unique mechanical properties that make them indispensable for technological products such as seals and tires, which are normally subjected to quasi-static loading conditions which superimposes cyclic loads; their failure is mainly related to fatigue. In this study the focus is on the effect on fatigue of parameters connected to the mechanical history. Fatigue crack growth of a non-crystallizing rubber was investigated using cyclically loaded pure shear specimens considering different loading conditions. In a first step, the geometry of the specimens, in terms of width to height ratios and notch length, was considered to avoid specimen-influences on the results. Subsequently, several tests were implemented using both force and displacement control with different loading histories. Finally, the effect on the fatigue crack growth of parameters such as waveform, frequency and load ratio was investigated. In general, no significant influence of load or displacement control was found. Among the loading parameters, waveform and load ratio seem not to have a marked effect on the fatigue behavior of the material. In contrast, decreasing values of frequency were found to increase the crack growth rate.

PY - 2021/11

Y1 - 2021/11

N2 - Rubbers possess unique mechanical properties that make them indispensable for technological products such as seals and tires, which are normally subjected to quasi-static loading conditions which superimposes cyclic loads; their failure is mainly related to fatigue. In this study the focus is on the effect on fatigue of parameters connected to the mechanical history. Fatigue crack growth of a non-crystallizing rubber was investigated using cyclically loaded pure shear specimens considering different loading conditions. In a first step, the geometry of the specimens, in terms of width to height ratios and notch length, was considered to avoid specimen-influences on the results. Subsequently, several tests were implemented using both force and displacement control with different loading histories. Finally, the effect on the fatigue crack growth of parameters such as waveform, frequency and load ratio was investigated. In general, no significant influence of load or displacement control was found. Among the loading parameters, waveform and load ratio seem not to have a marked effect on the fatigue behavior of the material. In contrast, decreasing values of frequency were found to increase the crack growth rate.

AB - Rubbers possess unique mechanical properties that make them indispensable for technological products such as seals and tires, which are normally subjected to quasi-static loading conditions which superimposes cyclic loads; their failure is mainly related to fatigue. In this study the focus is on the effect on fatigue of parameters connected to the mechanical history. Fatigue crack growth of a non-crystallizing rubber was investigated using cyclically loaded pure shear specimens considering different loading conditions. In a first step, the geometry of the specimens, in terms of width to height ratios and notch length, was considered to avoid specimen-influences on the results. Subsequently, several tests were implemented using both force and displacement control with different loading histories. Finally, the effect on the fatigue crack growth of parameters such as waveform, frequency and load ratio was investigated. In general, no significant influence of load or displacement control was found. Among the loading parameters, waveform and load ratio seem not to have a marked effect on the fatigue behavior of the material. In contrast, decreasing values of frequency were found to increase the crack growth rate.

KW - Fatigue crack growth

KW - Frequency

KW - Hysteresis

KW - Load ratio

KW - Rubber

UR - http://www.scopus.com/inward/record.url?scp=85116035284&partnerID=8YFLogxK

U2 - 10.1016/j.engfracmech.2021.108010

DO - 10.1016/j.engfracmech.2021.108010

M3 - Article

AN - SCOPUS:85116035284

VL - 257.2021

JO - Engineering Fracture Mechanics

JF - Engineering Fracture Mechanics

SN - 0013-7944

IS - November

M1 - 108010

ER -