Fatigue of vulcanized natural rubber under proportional and non‐proportional loading

Wang, Yanping; Liu, Jianjun; Duan, Wuwei; Zheng, Panpan; Qiao, Yu

doi:10.1111/ffe.13250

Cited by 7 publications

(2 citation statements)

References 34 publications

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“…As a result, widespread usage of NR may boost industrial economic growth and extend the life span of roads with minimal maintenance costs, which would greatly increase ride quality. Furthermore, rubberised mixtures can withstand several load cycles without breaking at a lower strain [10]. The crystallised nature of bitumen, which has rigid traits and cannot be stretched, promotes formation of cracks at a higher strain.…”

Section: Natural Rubber As a Bitumen Modifiermentioning

confidence: 99%

Potential Additives in Natural Rubber-Modified Bitumen: A Review

et al. 2023

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Conventional bitumen pavement is no longer suitable for handling increasing loads and weather variations, which cause road deterioration, Thus, the modification of bitumen has been suggested to counter this issue. This study provides a detailed assessment of various additives for modifying natural rubber-modified bitumen used in road construction. This work will focus on the use of additives with cup lump natural rubber (CLNR), which has recently started to gain attention among researchers, especially in rubber-producing countries such as Malaysia, Thailand and Indonesia. Furthermore, this paper aims to briefly review how the addition of additives or modifiers helps elevate the performance of bitumen by highlighting the significant properties of modified bitumen after the addition of modifiers. Moreover, the amount and method of application of each additive are discussed further to obtain the optimum value for future implementation. On the basis of past studies, this paper will review the utilisation of several types of additives, including polyphosphoric acid, Evotherm, mangosteen powder, trimethyl-quinoline and sulphur, and the application of xylene and toluene to ensure the homogeneity of the rubberised bitumen. Numerous studies were conducted to verify the performance of various types and compositions of additives, particularly in terms of physical and rheological properties. In general, additives enhance the properties of conventional bitumen. Future research should investigate CLNR because studies on its utilisation are limited.

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Section: Natural Rubber As a Bitumen Modifiermentioning

confidence: 99%

Potential Additives in Natural Rubber-Modified Bitumen: A Review

et al. 2023

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“…Mars and Fatemi 10,12 conducted a series of proportional and nonproportional loading path fatigue tests on natural rubber and found that fatigue crack nucleation or crack propagation in rubber occurs on a specific plane or, in certain cases, on several specific planes and that the fatigue life decreases significantly under a nonproportional loading path, whether uniaxial or multiaxial fatigue occurs. Wang et al 17 discussed the effects of proportional and nonproportional loading paths on rb's fatigue life and the effect of the phase angle on the stress response under multiaxial loading. The results show that the fatigue life increases with increasing phase angle in the case of axial R = 0 and twisting R = À1 (0 < φ < 180) for a given axial and torsional strain value.…”

Section: Introductionmentioning

confidence: 99%

Fatigue life prediction and effects of cerium oxide‐filled vulcanized natural rubber on fatigue life under multiaxial loading

Zheng

Lai

Wang

et al. 2021

Fatigue Fract Eng Mat Struct

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In this study, a rubber dumbbell cylindrical tube specimen is used as an example to study the effect of cerium oxide on the multiaxial fatigue life of vulcanized natural rubber (rb) under different strain amplitudes and different loading paths. The cracking energy density (CED), strain energy density (SED), Smith-Watson-Topper (SWT), Chen-Xu-Huang (CXH), and Fatemi-Socie fatigue life prediction models were used to evaluate the experimental data. The results show that the multiaxial fatigue life of the specimen increases with decreasing strain amplitude, the loading path has a significant influence on the life of rb, the SWT model and the CXH model have good prediction results for both materials, and the filling of cerium oxide can improve the fatigue resistance of vulcanized natural rubber.

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