Fatigue behavior and modeling of short fiber reinforced polymer composites including anisotropy and temperature effects

Mortazavian, Seyyedvahid; Fatemi, Ali

doi:10.1016/j.ijfatigue.2015.02.020

Cited by 93 publications

(90 citation statements)

References 34 publications

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“…This slight variation of properties for different coupons (and different regions in the same coupon) could add to scatter in the static and fatigue properties. This strategy of deriving several coupons from a single plate has been previously reported in literature [4], [22], [23]. Overall, it must be kept in mind that the confirmation of similar FOD for coupons machined from same plates but different locations is actually an assumption which is supported by simulation and other indirect observations.…”

Section: Methodssupporting

confidence: 68%

“…For example, De Monte et al who reported range of 1.14-1.23 for coupons subjected to tension-tension loading and in between 1.05-1.30 for loading at different r-ratio. By carefully extracting the published fatigue data and calculating the value of T σ in the above described way, one sees that the value of T σ for the data by Klimkeit et al [6] comes to be in the range of 1.22-1.35; while that from Mortazavian and Fatemi [4] are in the range of 1.18-1.36.…”

Section: Resultsmentioning

confidence: 99%

“…It is known and has been experimentally confirmed that the SN curve depends on the fiber orientation distribution (FOD) of the SFRC [1][2][3][4]. Like most other polymer composite materials, SFRC are also known to suffer loss of stiffness when subjected to cyclic loading.…”

Section: Introductionmentioning

confidence: 99%

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A statistical treatment of the loss of stiffness during cyclic loading for short fiber reinforced injection molded composites

Jain

Paepegem

Verpoest

et al. 2016

Composites Part B: Engineering

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Injection molded short fiber reinforced composites (SFRC) have different local fiber orientation distribution (FOD) at every point. SN curves of short fiber reinforced composites are known to depend on the fiber orientation distribution. Such materials also suffer from continuous loss of stiffness during cyclic loading. It is not known whether the loss of stiffness is different for SFRC with different FOD. A statistical analysis of the loss of stiffness curves is presented in this paper. Tension-tension fatigue experiments are performed and loss of stiffness is collected for every data point in the SN curve. A systematic method for comparing the loss of stiffness is developed. It is concluded that the difference in loss of stiffness curves for coupons of SFRC with different FOD is not statistically significant. Dear Editor,We, hereby submit revised version of article "A statistical treatment of the loss of stiffness during cyclic loading for short fiber reinforced injection molded composites" by the authors Atul Jain, Wim Van Paepegem, Ignaas Verpoest, Stepan V. Lomov to journal Composites Part B: EngineeringIn this paper, a new method to statistically compare the loss of stiffness curves is developed and sufficiently high number of experiments are performed to compare the loss of stiffness curves of short fiber reinforced composites. It is seen that the loss of stiffness curves are independent of the fiber orientation distribution in the short fiber reinforced composites.All the comments by all the referee have been addressed and described in the "answer to reviewer document".We declare that the content is not duplicated and not submitted to any other journal We thank the Referee for his continued interest in our work and for helpful comments that will greatly improve the manuscript and we have tried to do our best to respond to the points raised. The Referee has brought up some useful points and we appreciate the opportunity to clarify our research objectives and methods.As indicated below we have checked all the comments provided by the Referees and have made necessary changes accordingly to their indications. At the end of reply, wherever possible, we have indicated in bold the page number in text where change has been made.New text in the paper has been typed in red. Point 1: Influence of specimen extraction position (pag. 4)Profiles of the orientation tensor components over the thickness form process simulation are reported. An indication of the positions chosen for the plots of Fig.3a and Fig. 3b would be helpful for the reader. However, experimental evidence of FOD over the thickness is missing. Further, the influence of extraction position on mechanical properties is still not directly addressed. In view of this facts, it should be stated in the paper that "the FOD is uniform over the plate" is actually an assumption (supported by simulation) and that "extraction of specimens from different positions on the plate is a possible source of the scatter of quasistatic as well as fatigue strength". ...

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Section: Methodssupporting

confidence: 68%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

A statistical treatment of the loss of stiffness during cyclic loading for short fiber reinforced injection molded composites

Jain

Paepegem

Verpoest

et al. 2016

Composites Part B: Engineering

View full text Add to dashboard Cite

show abstract

“…As reported in the literature, the fatigue behaviors of polymers and polymer-matrix composites have been evaluated with respect to the effects of loading modes, time, temperature, mean stress, stress concentration, frequency, aging, anisotropy, and environmental effects (Mortazavian and Fatemi 2015a;Mortazavian and Fatemi 2015b;Shojaei and Wedgewood 2017). The creep of the composites increased as time, temperature, and stress increased (Homkhiew et al 2014), and high correlations between fatigue strength and tensile strength were obtained.…”

Section: Introductionmentioning

confidence: 97%

Interaction of Low Cycle Fatigue and Creep in Biomass-filled Plastic Composites

Guo

Zhu

2018

BioResources

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Most research on biomass-filled plastic composites (BFPCs) mainly focuses on their formulation and physical/mechanical properties, but studies on the connection performance of BFPCs are very rare. However, such performance is vital in the quality assessment of BFPCs products and plays an important role in improving product quality and promoting its application in the field of architecture and furniture. Therefore, the behavior of L-type BFPCs structure under the interaction of fatigue-creep was investigated. Results suggested that the fatigue-creep curve is a typically three-region curve at 80% and 60% failure load, and only first two stages at 40% failure load. But the damage caused by fatigue-creep interaction was not a simple superposition. Fatigue damage dominated when the holding time was short, and creep damage occupied a dominant position gradually when the holding time was longer. In addition, the lifespan of the BFPC component increased initially and then decreased as holding time increased. The component joint exhibited the least integrated damage when the holding time was 60 s and the lifespan was longer.

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“…Mortazavian et al [5] have developed a model based on the work of Epaarachchi & Clausen [4] in order to predict the fatigue life of short-fibre-reinforced polymer. The authors showed that this model is able to predict accurately the fatigue life of short glass fibre/PA66 composite for several temperatures, stress ratios and fibres orientations.…”

Section: Introductionmentioning

confidence: 99%

Fatigue behaviour of open-hole samples and automotive mini-structures made of woven glass-fibre-reinforced polyamide 6,6

et al. 2018

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Abstract. In the automotive industry, the integration of thermoplastic composite components represents a high-potential solution to the mass reduction challenge. In this study, a woven glassfibre-reinforced composite with a polyamide 6,6 matrix is considered for the purpose of being integrated into automotive parts. Tension-tension fatigue tests were conducted on [(0/90) 3 ] openhole samples. These tests were instrumented with non-destructive techniques, namely acoustic emission and infrared thermography. Acoustic emission results showed fibre-matrix debonding and fibre breakages in open-hole samples, located around the hole. Furthermore, 3-point bending fatigue tests were performed on "omega" mini-structures. A semi-empirical model was used in order to predict the fatigue lives of both open-hole coupons and automotive mini-structures. Predictions of the model for open-holes samples underestimate experimental fatigue lives. Nevertheless, the semiempirical model showed good results for the fatigue life prediction of composite mini-structures.

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Fatigue behavior and modeling of short fiber reinforced polymer composites including anisotropy and temperature effects

Cited by 93 publications

References 34 publications

A statistical treatment of the loss of stiffness during cyclic loading for short fiber reinforced injection molded composites

A statistical treatment of the loss of stiffness during cyclic loading for short fiber reinforced injection molded composites

Interaction of Low Cycle Fatigue and Creep in Biomass-filled Plastic Composites

Fatigue behaviour of open-hole samples and automotive mini-structures made of woven glass-fibre-reinforced polyamide 6,6

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