Evaluation of fatigue behavior in cold recycled mixture using digital image correlation method

Gao, Lei; Ni, Fujian; Cheng, Long; Yan, Jinhai

doi:10.1016/j.conbuildmat.2015.11.014

Cited by 58 publications

(22 citation statements)

References 16 publications

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“…25 Gao et al obtained the full-field strain results captured by DIC technique and verified that the two transition points of the curve were the initial crack point and the fatigue failure point, respectively. 26 Giancarlo et al investigated the strain field around the crack tip by DIC and determined the displacement gradient, stress component and strain energy along the selected path.…”

Section: Introductionmentioning

confidence: 99%

Influence of foreign object impact mode on fatigue performance of 2198‐T8 Al‐Li alloy thin sheets for fuselage

Chen

Pan

Zhang

et al. 2020

Fatigue Fract Eng Mat Struct

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The 2198-T8 is the advanced aircraft aluminium-lithium alloy used for airframe construction. Based on the digital image correlation technique, the postimpact fatigue performance of 2198-T8 aluminium-lithium alloy sheets was analysed. The foreign object impact mode includes a single impact, continuous twice-impacts at the same position and impacts at two parallel positions. For each mode, the collapse behaviours with different impact energies and insert dimensions were investigated. The results could show that residual fatigue life is sensitive to the impact mode, and through digital image correlation (DIC) nephogram analysis, on the surface of dented specimens, there exists the redistribution of strain field. For three types of impact modes, the concept of average damage volume is introduced to fit the effect of dent depth and width on residual fatigue life; the goodness of fit for the whole average damage volume is 89.5%. The crack initiation and propagation of the postimpact fatigue specimen will be affected by the stress concentration and microstructure, and the local multiaxial strain status around the dent will accelerate the crack propagation.

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Section: Introductionmentioning

confidence: 99%

Influence of foreign object impact mode on fatigue performance of 2198‐T8 Al‐Li alloy thin sheets for fuselage

Chen

Pan

Zhang

et al. 2020

Fatigue Fract Eng Mat Struct

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show abstract

“…A Figura 5 (a) apresenta uma curva tıṕica de fadiga em forma de "S" de inida por três estágios (GAO E LING, 2016). No primeiro deles o deslocamento aumenta rapidamente até o momento em que a trinca começa a propagar, sendo a curva ajustada na forma de uma potência .…”

Section: Ensaio De Fratura Em Amostra Semicircularunclassified

“…Assim como Li e Marasteanu (2010), Huang et al (2013), Gao e Ling (2016), Vargas et al (2018), e Nsengiyumva e Kim (2019) vários outros estudiosos o tem adotado buscando determinar propriedades de fratura das misturas asfálticas.…”

Section: Introductionunclassified

Utilização do ensaio de flexão sobre amostra semicircular para avaliação da propagação do trincamento em misturas com diferentes ligantes

et al. 2019

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Neste trabalho é estudada a propagação de fissuras e ruptura em misturas asfálticas através do ensaio de flexão semicircular. Trincamentos que surgem nos revestimentos asfálticos revelam-se como um dos principais danos que afetam diretamente a serventia e qualidade dos pavimentos flexíveis. Esta pesquisa busca contribuir para a análise da resistência ao trincamento, bem como propagação do trincamento até a ruptura de misturas asfálticas onde são utilizados três diferentes tipos de ligantes. Para este fim empregou-se o ensaio de flexão em amostra semicircular com fenda, estático (EEFAS) e dinâmico (EDFAS). Foram analisadas três composições, dosadas pelo método Superpave: uma com cimento asfáltico de petróleo (CAP), outra com asfalto modificado por polímero (AMP) e a terceira com asfalto borracha (AB), denominadas, respectivamente, como misturas A, B e C. Os resultados indicaram maior rigidez da mistura com AMP, que também apresentou maior vida de fadiga. Por outro lado, as amostras com CAP e AB apresentaram-se dúcteis e com menor velocidade de propagação das microtrincas.

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“…Papavasiliou and Loizos demonstrated that a cold recycled pavement overlaid with asphalt concrete improved fatigue characteristics of pavement structure through test sections and laboratory analysis [14]. Gao et al studied the fatigue behavior of cold-recycled mixtures by using digital image correlation technology [15]. Compared with hot mix asphalt mixtures, cold recycled mixtures have longer fatigue life and larger tensile strain at the failure point under lower stress levels.…”

Section: Introductionmentioning

confidence: 99%

Fatigue Properties of Cold-Recycled Emulsified Asphalt Mixtures Fabricated by Different Compaction Methods

et al. 2019

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This paper focuses on investigating the fatigue properties of cold-recycled emulsified asphalt mixtures (CEAMs) designed via two different compaction methods. First, two different CEAM compaction procedures were investigated and evaluated, including the modified Marshall compaction method (MMCM) and the vertical vibration testing method (VVTM). Indirect tensile fatigue tests were then performed to research the fatigue lives of CEAMs fabricated via the two methods. Finally, a Weibull distribution was applied to analyze the fatigue test results, and the fatigue equation was constructed. The results indicated that the average mechanical strength ratio between the CEAM samples produced by VVTM and the field core samples was >92%, whereas the average ratio of the specimens shaped by the MMCM was <65%. Compared with MMCM-molded CEAMs, VVTM-fabricated CEAMs showed decreased optimal moisture and emulsified asphalt contents by 11% and 9%, respectively, but exhibited improved moisture stability, anti-cracking performance, and anti-rutting performance by 4%, 12%, and 35%, respectively. The fatigue equations established on the basis of the Weibull distribution could effectively assess the fatigue life of CEAMs. The VVTM-manufactured CEAMs showed good resistance of stress change sensitivity and fatigue failure under different stress ratios. The VVTM-compacted CEAMs demonstrated increased fatigue life by 36% at a stress ratio of 0.45 and by 325% at a repeated load of 0.27 MPa compared with the MMCM-fabricated CEAMs.

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Evaluation of fatigue behavior in cold recycled mixture using digital image correlation method

Cited by 58 publications

References 16 publications

Influence of foreign object impact mode on fatigue performance of 2198‐T8 Al‐Li alloy thin sheets for fuselage

Influence of foreign object impact mode on fatigue performance of 2198‐T8 Al‐Li alloy thin sheets for fuselage

Utilização do ensaio de flexão sobre amostra semicircular para avaliação da propagação do trincamento em misturas com diferentes ligantes

Fatigue Properties of Cold-Recycled Emulsified Asphalt Mixtures Fabricated by Different Compaction Methods

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