2014
DOI: 10.1016/j.polymer.2014.10.010
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Thermomechanical analysis of the crack tip zone in stretched crystallizable natural rubber by using infrared thermography and digital image correlation

Abstract: a b s t r a c tThis paper provides the first characterization of heat source field in the crack tip zone in carbon black filled natural rubber (NR). It focuses more especially on the calorific effects of strain induced crystallization (SIC). For this purpose, full thermal and kinematic fields are measured simultaneously. Initial image processing based on motion compensation enables us to track the temperature of any material point at the specimen surface. A second image processing stage, based on the heat diff… Show more

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Cited by 35 publications
(20 citation statements)
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“…Other studies concerning rubber fatigue resistance have shown increased crystallization at the ruptured site [38,39]. In these works, the analyzed cracks are always macroscopic, but the microscopic ligaments shown in Figure 4f are like others that are a consequence of rubber chain alignment and crystallization [40], and were also observed at microscopic scale.…”
Section: Rubber Surface Heterogeneitymentioning
confidence: 71%
“…Other studies concerning rubber fatigue resistance have shown increased crystallization at the ruptured site [38,39]. In these works, the analyzed cracks are always macroscopic, but the microscopic ligaments shown in Figure 4f are like others that are a consequence of rubber chain alignment and crystallization [40], and were also observed at microscopic scale.…”
Section: Rubber Surface Heterogeneitymentioning
confidence: 71%
“…However, the method has not been applied in a situation where cyclic loading is used. In [13][14][15], the images for DIC and the IR were obtained from opposite sides of the specimen, at the same time, using a trigger system. The IR images captured as the specimen deformed were mapped to a reference coordinate system using the displacement data obtained from the DIC.…”
Section: Introductionmentioning
confidence: 93%
“…Regarding the physical nature of the thermoelastic coupling in both leathers, the temperature variation of a material point far from the crack tip, that is, far from the damaged zone, is plotted in Figure (The locations of point A for leather A and point B for leather B are given in Figure ). In this zone, the temperature variations can be estimated simply by image subtraction with respect to the initial state (at the beginning of the test), that is, without requiring displacement compensation processing, as for instance in Pottier et al (2009), Samaca Martinez et al (2014), or Samaca Martinez et al (2015). () Indeed, even though the temperature subtraction is not performed exactly at the same material point, no temperature gradient occurs in this zone, which does not affect the temperature change value.…”
Section: Resultsmentioning
confidence: 99%