Bending fatigue failure mechanisms of twill fabric E-Glass/Epoxy composite

Beyene, Alem Tekalign; Belingardi, Giovanni

doi:10.1016/j.compstruct.2014.11.067

Cited by 16 publications

(4 citation statements)

References 11 publications

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“…simulation results show higher stresses on the outer skins of the sandwich, through the microscopic analysis of the beginning failure it is possible to observe in the middle skins, the adhesive fracture of fiber/matrix. Similar results were obtained by Beyene and Belingardi 30 . This fracture occurs specifically on the resin of the fibers perpendicular to length.…”

Section: Characteristic Of Mechanical Fracturefatigue Testssupporting

confidence: 91%

Effects of Amount of Glass Fiber Laminate Skins in Sandwich Composite of Filled Core

2018

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The purpose of this work is the study of the mechanical behavior of two different sandwich composite in static and fatigue analysis of three-point bending, using different amount of glass fiber laminated as skins, remaining with same total thickness. The specimens are composed of glass fiber cloth and epoxy resin. The static tests provided the mechanical properties used in numerical simulations as well as fatigue tests analysis. Applying controlled displacement, it was analyzed load reactions, lifetime and failure modes during fatigue tests. Identifying the failures modes in microscopic analyses it was perceived adhesive fracture in fiber/matrix as first damage and core rupture as ultimate damage.

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Section: Characteristic Of Mechanical Fracturefatigue Testssupporting

confidence: 91%

Effects of Amount of Glass Fiber Laminate Skins in Sandwich Composite of Filled Core

2018

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“…Beyene et al 15 and Beyene and Belingardi 16 investigated the flexural fatigue failure of twill fabric E-Glass/Epoxy composite. Four-point flexural fatigue test was conducted under displacement-control.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of the flexural fatigue performance of plain woven basalt fiber/epoxy

Chhorn

Jung

2021

Science Progress

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Fatigue of composite materials is a very complex phenomenon, to date a numerous research effort is being spent on it. Because of deficiencies in study of flexural fatigue performance basalt fiber reinforced polymer (BFRP), the main objective of this work is to investigate the flexural fatigue performance of BFRP. The laminates of 4.0 mm average thickness were fabricated using the vacuum infusion technique. Three different stress levels of (162.90, 122.24, and 81.44) MPa were considered. A failure criterion was considered to be a 20% stiffness reduction of flexural fatigue test. Also, the stiffness reduction zones in the history of fatigue specimen were investigated. The failure mode of specimen at 20% reduction stiffness was inspected. The Weibull distribution function was used to obtain the failure probabilities and scatter. The S–N curve of composite laminates was constructed using five specimens at each number of cycles. This study indicated that under fatigue loading, the stiffness degradation process of composite materials was divided into three stages: the first is the high rate of stiffness degradation at the first few thousand cycles. The second stage then takes place with slow gradual stiffness degradation, which covers a sizeable portion of the component life. Finally, more grave types of damage occur, like fiber fracture, and induce complete material failure.

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“…Van Paepegem et al [24] used bending fatigue rig for composite materials where fretting action can be considered between sample and fixed joint. Notable reviews and experiments were carried out on wear, fatigue [25][26][27][28][29][30][31][32][33][34][35][36][37][38] as well as fretting fatigue [23,[39][40][41][42][43][44][45][46][47][48][49] However, relatively less on bending accelerated fretting fatigue [22,[50][51][52]. Considering all above mentioned parameters with conditions, some perfect attributes [53] of fretting fatigue test rigs (FFTR) must have Versatility to various dimensions and stiffness of the samples and fretting pads; Possibility to perform different states of load (constant or alternating load); Scope to create fretting fatigue mechanism by recording the information from various tried materials that could be applied to different model to foresee the fatigue life; Accessibility to gauge fretting stresses and strains; Minimal cost of setup to perform a few tests at the same time; Flexibility of load recurrence.…”

Section: Introductionmentioning

confidence: 99%

On the diversity in design for different bending fretting fatigue mechanism

2019

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Fretting fatigue has emerged as the center of interest for research in recent decades due to its high importance in real application field. Despite this advancement, comparatively few experiments as well as studies have been accomplished on bending fretting fatigue. Researchers either developed new test rigs or accepted a conventional concept since there exists no specific, standalone and standard test rig. However, as it is difficult to compare each work with others, the increasing number of test rigs are not suitable to ensure the justified results under conditional circumstance. This article classified the existing bending fretting fatigue test rigs depending on the variable parameters like fretting and loading actions. It can be mentioned that reciprocating fretting fatigue test rigs have more diversities as compared to rotary fretting fatigue test rigs due to the advantages of variable loading values, displacement controlling, fretting damage pre-determination and other desirable purposes. This article might be useful as a state of art for future contributions of the modern technology in industrial applications.

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Bending fatigue failure mechanisms of twill fabric E-Glass/Epoxy composite

Cited by 16 publications

References 11 publications

Effects of Amount of Glass Fiber Laminate Skins in Sandwich Composite of Filled Core

Effects of Amount of Glass Fiber Laminate Skins in Sandwich Composite of Filled Core

Experimental investigation of the flexural fatigue performance of plain woven basalt fiber/epoxy

On the diversity in design for different bending fretting fatigue mechanism

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