Fracture and fatigue of polymers and composites (survey)

Regel, V. R.; Tamuzh, V. P.

doi:10.1007/bf00859423

Cited by 7 publications

(4 citation statements)

References 27 publications

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“…As a result of the periodic nature of the applied load, micro-cracks initiate and propagate at relatively low stress level and finally structure will fracture. Although investigation of the fatigue failure phenomenon in metals dates back to 18 th century [39], studies in polymer fatigue has been conducted since 1960's and several early articles and review papers cover both experimental and theoretical investigations of fatigue failure in polymers [40][41][42][43][44][45][46]. In most cases, principles initially developed to explain fatigue failure in metals can accurately describe polymer fatigue phenomenon [38].…”

Section: Mechanical Fatigue Induced Microcracking (Mechanical Cycling)mentioning

confidence: 99%

Cracks, microcracks and fracture in polymer structures: Formation, detection, autonomic repair

Awaja

Zhang

Tripathi

et al. 2016

Progress in Materials Science

274

116

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Polymers and polymer composites are susceptible to premature failure due to the formation of cracks and microcracks during their service time. Evolution of cracks and microcracks could induce catastrophic material failure. Therefore, the detection/diagnostics and effective repair of cracks and microcracks are vital for ensuring the performance reliability, cost effectiveness and safety for polymer structures. Cracks and microcracks, however, are difficult to detect and often repair processes are complex. Biologically inspired self-healing polymer systems with inherent ability to repair damage have the potential to autonomically repair cracks and microcracks. This article is a review on the latest developments on the topics of cracks and microcracks initiation and propagation in polymer structures and it discusses the current techniques for detection and 2 observation. Furthermore, cracks and microcrack repair through bio-mimetic self-healing techniques is discussed along with surface active protection. A separate section is dedicated to fracture analysis and discusses in details Fracture mechanics and formation.

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Section: Mechanical Fatigue Induced Microcracking (Mechanical Cycling)mentioning

confidence: 99%

Cracks, microcracks and fracture in polymer structures: Formation, detection, autonomic repair

Awaja

Zhang

Tripathi

et al. 2016

Progress in Materials Science

274

116

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“…defects, including cavities, inclusions, and pre-existing microcracks, function as locations where tension is concentrated within the material. 120,185,186 These defects may initiate and propagate cracks when subjected to the high-frequency cyclic loading conditions that are characteristic of USF tests; thus, they may ultimately contribute to the initiation of fatigue damage. Internal defects have repercussions that extend to the fatigue life of the FRP composites.…”

Section: Crack Initiationmentioning

confidence: 99%

“…The performance and fatigue behavior of FRP composites can be substantially impacted by the existence of internal defects during USF testing 183,184 . Internal defects, including cavities, inclusions, and pre‐existing microcracks, function as locations where tension is concentrated within the material 120,185,186 . These defects may initiate and propagate cracks when subjected to the high‐frequency cyclic loading conditions that are characteristic of USF tests; thus, they may ultimately contribute to the initiation of fatigue damage.…”

Section: Failure Mechanismsmentioning

confidence: 99%

Very high cycle fatigue of fiber‐reinforced polymer composites: Uniaxial ultrasonic fatigue

Behvar,

Sojoodi,

Elahinia

et al. 2024

Fatigue Fract Eng Mat Struct

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This review explores uniaxial ultrasonic fatigue (USF) testing as a common and dependable method for quantifying the extended fatigue life of fiber‐reinforced polymer (FRP) composites. The objective is to explain the complexities governing the fatigue life behavior of FRPs, particularly in the realm of very high cycle fatigue (VHCF) where the number of loading cycles exceeds 107. To this end, this review encompasses the analysis of VHCF behavior, including the derivation and interpretation of stress–life (S–N) data, the evaluation of various fatigue damage mechanisms (i.e., controlling mechanisms of crack initiation and propagation) exhibited in FRP composites, and a thorough investigation of the frequency‐dependent effects on fatigue responses. Furthermore, this review tries to analyze the microscopic intricacies intrinsic to the VHCF failure of FRP composites, encompassing aspects such as fiber‐matrix de‐bonding, matrix cracking, and delamination, unveiling their modes and effects in a detailed manner. This review also underscores the pivotal integration of simulations, machine learning, and modeling techniques, emphasizing their crucial role in explaining both macroscopic and microscopic interactions governing the VHCF of FRPs.

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“…The developed theoretical models often constitute a basis for the development of fatigue models, considering the self-heating effect. Starting from simple phenomenological models proposed by Oldyrev and Tamuzh [45,46,61,88,89,90], the modelling of the fatigue and fracture of polymers and PMCs was successfully developed over the decades. As the authors of the previous studies have stated, the influence of the self-heating effect cannot be negligible during the fatigue of polymeric and PMC structures; therefore, extensive studies in the development of fatigue models were performed in past few decades and are developed until the present day.…”

Section: Literature Review On the Self-heating Effectmentioning

confidence: 99%

Criticality of the Self-Heating Effect in Polymers and Polymer Matrix Composites during Fatigue, and Their Application in Non-Destructive Testing

Katunin

2018

Polymers

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The self-heating effect is a dangerous phenomenon that occurs in polymers and polymer matrix composites during their cyclic loading, and may significantly influence structural degradation and durability as a consequence. Therefore, an analysis of its criticality is highly demanding, due to the wide occurrence of this effect, both in laboratory fatigue tests, as well as in engineering practice. In order to overcome the problem of the accelerated degradation of polymer matrix structures, it is essential to evaluate the characteristic temperature values of self-heating, which are critical from the point of view of the fatigue life of these structures, i.e., the temperature at which damage initiates, and the safe temperature range in which these structures can be safely maintained. The experimental studies performed were focused on the determination of the critical self-heating temperature, using various approaches and measurement techniques. This paper present an overview of the research studies performed in the field of structural degradation, due to self-heating, and summarizes the studies performed on the evaluation of the criticality of the self-heating effect. Moreover, the non-destructive testing method, which uses the self-heating effect as a thermal excitation source, is discussed, and the non-destructivity of this method is confirmed by experimental results.

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Fracture and fatigue of polymers and composites (survey)

Cited by 7 publications

References 27 publications

Cracks, microcracks and fracture in polymer structures: Formation, detection, autonomic repair

Cracks, microcracks and fracture in polymer structures: Formation, detection, autonomic repair

Very high cycle fatigue of fiber‐reinforced polymer composites: Uniaxial ultrasonic fatigue

Criticality of the Self-Heating Effect in Polymers and Polymer Matrix Composites during Fatigue, and Their Application in Non-Destructive Testing

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