Short-beam shear fatigue life assessment of thermally cycled carbon–aluminium laminates with protective glass interlayers

Surowska, B.; Dadej, Konrad; Jakubczak, Patryk; Bieniaś, J.

doi:10.1007/s43452-021-00181-y

Cited by 4 publications

(3 citation statements)

References 44 publications

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“…Moreover, the epoxy matrix may become plasticized or swell and may result reducing the adhesion of aluminum to prepreg layers. Stresses resulting from thermal shocks generally reach the maximum value at the interface regions of GLARE samples according to Surowska et al [ 31 ] As a result, delamination is the dominant deformation mechanism for all GLARE samples compared to acyclic conditioned GLARE samples. In addition, delamination regions which are occurred at upper or bottom interfaces are restricted by applying surface treatments such as degreasing and both degreasing and sandpapering.…”

Section: Resultsmentioning

confidence: 99%

The effect of surface treatments on the interlaminar shear failure of GLARE laminates subjected to pre‐cyclic thermal loads

Süsler

Bora

Uçan³

et al. 2022

Polymer Composites

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In this study, both the individual and combined effect of thermal cycling and surface treatment on the interlaminar shear strength (ILSS) of glass laminate aluminum‐reinforced epoxy (GLARE) 3/2 sheet material are investigated experimentally. Three kinds of surface treatments including sandpapering, degreasing and both degreasing and sandpapering are applied to AA6061‐T6 sheets before manufacturing of hot‐pressed GLARE 3/2 sheet material. Two different cyclic thermal conditions, which are referred to the flight characteristics of a typical transport category aircraft, are then applied to short‐beam GLARE specimens by changing temperature limits and keeping the number of cycles the same. Three‐point bending tests are lastly performed to examine the effects of surface treatments on the ILSS of GLARE laminates under pre‐cyclic thermal conditions by comparing with the specimens under acyclic condition at room temperature. The results show that the ILSS of surface‐treated laminates have an increase by between 29% and 73% against untreated ones according to the cyclic thermal profile. If sandpapering and degreasing apply together as a combined mechanical–chemical surface treatment process, then ILSS is totally preserved or reduced by only 4% under certain thermal pre‐cyclic conditions.

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Section: Resultsmentioning

confidence: 99%

The effect of surface treatments on the interlaminar shear failure of GLARE laminates subjected to pre‐cyclic thermal loads

Süsler

Bora

Uçan³

et al. 2022

Polymer Composites

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“…This makes one test under the operational definition of no failure with several cyclic loads. [27][28][29][30][31] Therefore, the obtained value does not always represent the actual number of cycles to failure at complete fracture, that is, the life of the bio-nanocomposites.…”

Section: Pattern Of Fatigue Testingmentioning

confidence: 99%

A compendious review on fatigue properties of the bio‐nanocomposites

et al. 2022

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In this present work, a review of fatigue strength on bio‐nano composites was presented. Generally, the biocomposites possessed higher fatigue strength than the conventional materials. Because the propagation in biocomposites can be arrested due to their internal structure, whereas the damages occur in the matrix and/or at the fiber/matrix interface region. In the case of conventional materials, the cracks would rapidly grow until a catastrophic failure occurs. Thus, the S–N curves of composites show a flatter curve when compared to the conventional materials. In terms of fatigue properties, conventional fiber‐reinforced composites (e.g., glass and carbon‐reinforced composites) were more extensively studied than bio‐based reinforced composites. Examining the fatigue properties of materials is significant for all engineering‐based applications. Because the fatigue failures can occur below the ultimate tensile strength of materials. However, the fatigue performance of the composites can be enhanced by improving the fiber‐matrix interfacial bonding resulting from surface treatment of fibers and incorporating nanofillers within the matrix, and so forth. Since the nanocomposites have a larger surface area and aspect ratio, they are preferred to use in many applications: aerospace, automotive, biotechnology, construction, and building, electronics, marine, and packing industries. Thus, this chapter starts with the unique advantages of bio‐nano composites. Then, the fatigue properties of bio‐nano composites, the significance of the S–N diagram, and the pattern of fatigue testing were discussed. In order to understand the fatigue behavior, several factors such as structure, fillers, fabrication techniques, and so forth were included. Challenges of fatigue strength of biocomposites were also summarized.

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“…This process results in a reduction of adhesive joint strength and durability, a consequence of which is structural failure at a stress lower than the static strength of the joint [1,4]. The issue of thermal fatigue in adhesive joints and its eff ects on long-term, reliable operation still remains an object of research [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%