Parameters governing strain induced crystallization in filled natural rubber

Chenal, Jean-Marc; Gauthier, Catherine; Chazeau, Laurent; Gallais, Laurent; Bomal, Y.

doi:10.1016/j.polymer.2007.09.023

Cited by 154 publications

(141 citation statements)

References 26 publications

(25 reference statements)

Supporting

Mentioning

127

Contrasting

Unclassified

Order By: Relevance

“…Nevertheless, it is thought by the authors that, if the material is not perfectly incompressible, the deviation from incompressibility would be small especially if one considers that the effect of SIC would counterbalance the effect of cavitation. This point was investigated by Chenal et al [20]. According to this author, the volume variation is less than 2.5% in a filled NR after a few cycles (i.e.…”

Section: Change In Thicknessmentioning

confidence: 95%

Multiaxial deformation and strain-induced crystallization around a fatigue crack in natural rubber

Rublon

Huneau

Verron

et al. 2014

Engineering Fracture Mechanics

View full text Add to dashboard Cite

, et al.. Multiaxial deformation and strain-induced crystallization around a fatigue crack in natural rubber. Engineering Fracture Mechanics, Elsevier, 2014, 123, pp.59-69. 10.1016/j.engfracmech.2014 Multiaxial deformation and strain-induced crystallization around a fatigue crack in natural rubber The study of fatigue crack propagation in elastomers is an essential prerequisite to improve the service life of tire products. Natural rubber is a key compound in tires, because of its unique mechanical properties and more particularly its remarkable resistance to fatigue crack growth as compared to synthetic rubbers. To explain this resistance, the literature often mentions the phenomenon of strain-induced crystallization which takes place at fatigue crack tips in natural rubber and then reinforces it. In the present study, an original experimental set-up that couples synchrotron radiation with a homemade mechanical fatigue machine is developed to investigate both strain-induced crystallization and deformation multiaxiality around fatigue cracks in natural rubber. During uninterrupted fatigue tests, recording of wide-angle X-ray diffraction patterns is performed in the crack tip region providing the two-dimensional spatial distribution of both crystallinity and principal strain directions. In particular, the influence of loading conditions on the size of the crystallized zone is investigated and related to fatigue crack growth rates. Finally, measurements of deformation multiaxiality, i.e. principal strain directions and change in thickness, obtained by this method are successfully compared with digital image correlation results.

show abstract

Section: Change In Thicknessmentioning

confidence: 95%

Multiaxial deformation and strain-induced crystallization around a fatigue crack in natural rubber

Rublon

Huneau

Verron

et al. 2014

Engineering Fracture Mechanics

View full text Add to dashboard Cite

show abstract

“…Samples may also be placed in a gas chamber connected to a reference chamber by a differential pressure sensor. Chenal et al [17] used such a Farris apparatus to measure volume changes in stretched filled natural rubber. They measured a 4% volume expansion upon 200%-stretching during cyclic tests.…”

Section: Mechanical Testsmentioning

confidence: 99%

Volume changes in a filled elastomer studied via digital image correlation

et al. 2012

View full text Add to dashboard Cite

is an open access repository that collects the work of Arts et Métiers ParisTech researchers and makes it freely available over the web where possible. AbstractVolumetric strains in a filled SBR specimen subjected to cyclic uniaxial tension with increasing extensions are studied. Digital image correlation is used to follow the kinematics of two orthogonal free faces. A volume expansion is observed past a critical elongation, which can be interpreted as the onset of cavitation. Under unloading, the volume returns to its original value and remains constant upon reloading. Increasing the elongation to higher values than the previous cycle leads again to a volumetric expansion.

show abstract

“…The spectra extracted from I ani (2h, b) and I iso (2h) are classically fitted by a series of Pearson functions. 4,5,21,22 Different characteristics of the crystallized phase of NR are calculated from those quantities.…”

Section: Scattering Pattern Analysismentioning

confidence: 99%

Characteristics of Strain-Induced Crystallization in Natural Rubber During Fatigue Testing: In Situ Wide-Angle X-Ray Diffraction Measurements Using Synchrotron Radiation

Beurrot-Borgarino

Huneau

Verron

et al. 2014

Rubber Chemistry and Technology

View full text Add to dashboard Cite

cuta, et al.. Characteristics of strain-induced crystallization in natural rubber during fatigue testing: in situ wide-angle x-ray diffraction measurements using synchrotron radiation. Rubber Chemistry and Technology, American Chemical Society, 2014, 87 (1), pp.184-196. 10 ABSTRACTStrain-induced crystallization of carbon black-filled natural rubber is investigated by wide-angle X-ray diffraction (WAXD) during in situ fatigue tests using synchrotron radiation. Thanks to an original experimental method, we measure the evolution with the number of cycles of: (i ) the index of crystallinity, both (ii ) size and (iii ) orientation of the crystallites, and finally (iv) the lattice parameters. It is shown that when the minimum stretch ratio of the fatigue test is lower than the onset of melting of the crystallites, then the index of crystallinity and the size of the crystallites decrease, whereas they increase when the minimum stretch ratio is higher than the onset of melting. For all the fatigue tests, the misorientation of the crystallites slightly decreases and the lattice parameters remain constant with the number of cycles.

show abstract

Parameters governing strain induced crystallization in filled natural rubber

Cited by 154 publications

References 26 publications

Multiaxial deformation and strain-induced crystallization around a fatigue crack in natural rubber

Multiaxial deformation and strain-induced crystallization around a fatigue crack in natural rubber

Volume changes in a filled elastomer studied via digital image correlation

Characteristics of Strain-Induced Crystallization in Natural Rubber During Fatigue Testing: In Situ Wide-Angle X-Ray Diffraction Measurements Using Synchrotron Radiation

Contact Info

Product

Resources

About