Moisture sorption and mechanical degradation of VARTMed three-dimensional braided carbon–epoxy composites

Wan, Yizao; Wang, Y.L.; Huang, Yuan; Zhou, F. G.; He, Bin; Chen, G.C.; Han, Kang-ning

doi:10.1016/j.compscitech.2004.12.028

Cited by 30 publications

(19 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Regardless of the fiber coating, wet composites were found to suffer from interfacial debonding, matrix craze, and fiber pullout with a subsequent decrease in mechanical properties. Decreased flexural strength, flexural modulus, and shear strength were also reported by Wan et al in three‐dimensional braided carbon‐epoxy laminates prepared by vacuum assisted resin transfer molding. In addition to these specific cases, the bulk of existing literature indicates a near universal consensus on the undesirable decrease in material properties due to absorbed moisture in polymers and their composites.…”

Section: Introductionsupporting

confidence: 75%

Non-fickian three-dimensional hindered moisture absorption in polymeric composites: Model development and validation

Grace

Altan

2013

Polym. Compos.

View full text Add to dashboard Cite

A new, three‐dimensional, anisotropic non‐Fickian diffusion model is developed to characterize moisture absorption in polymeric composites. The new hindered diffusion model extends the classical Fickian theory to include the effects of the interaction of diffusing molecules with the chemical and physical structure of polymeric composites. The numerical solution of the hindered diffusion model is obtained for a three‐dimensional, anisotropic domain by using a forward‐time, centered‐space finite difference technique. The moisture weight gain over time predicted by the model is shown to mimic a wide variety of anomalous absorption behavior, often exhibited by anisotropic composite laminates. The accuracy of the numerical solutions is verified by comparing the results to known analytical solutions of a one‐dimensional, “Langmuir‐type” diffusion model and for the limiting case of the three‐dimensional Fickian model. The utility of the proposed hindered diffusion model is demonstrated by accurately recovering the absorption behavior of three different material systems reported in literature. First, it is shown that the hindered diffusion model can accurately predict the moisture absorption data for unidirectional glass‐reinforced epoxy plates of varying dimensions exposed to a relative humidity of 80%. Second, the one‐dimensional version of the model is applied to experimental moisture absorption data for isotropic epoxy resin samples of different thicknesses. Anomalous effects due to sample thickness reported in the original article are accurately captured. Third, the proposed model is shown to be more accurate than a two‐stage diffusion model applied to moisture absorption data obtained from a woven 3‐ply carbon fiber reinforced bismaleimide composite. POLYM. COMPOS., 34:1144–1157, 2013. © 2013 Society of Plastics Engineers

show abstract

Section: Introductionsupporting

confidence: 75%

Non-fickian three-dimensional hindered moisture absorption in polymeric composites: Model development and validation

Grace

Altan

2013

Polym. Compos.

View full text Add to dashboard Cite

show abstract

“…plasticization, but it also attacks the fiber-matrix interface [143][144][145]. A reduction in strength and stiffness due to moisture absorption can be attributed to various damage mechanisms which can include matrix cracking, fibre/matrix interface, matrix plasticization/softening, stress generation due to swelling of the system, chemical degradation [122,138,139,146,147].…”

Section: Composite Materialsmentioning

confidence: 99%

Bonded repair of composite structures in aerospace application: a review on environmental issues

2018

View full text Add to dashboard Cite

IntroductionOutstanding properties of fiber reinforced polymer composite materials, lead to a wide application in all the sectors such as aerospace, automotive, marine, sports industries and even in the civil infrastructures, etc. Since the last decades, an enormous use of composite materials in the aerospace sector has caused an increasing need for repair technology of damaged component rather than replacement with a new component [1][2][3][4]. Composite structures in service experience damage that comes from the accidental impact and mechanical or environmental condition [5,6]. The main environmental threats are related to the effect of temperature and moisture absorption, which can affect the strength of composite structures and reduce their service life [4,7,8]. The temperature and moisture levels could vary throughout the day (see Fig. 1), from take off to the landing or vice versa, during seasonal change or geographical difference [9]. This cyclic temperature and moisture could even further deteriorate the structures and then lead to premature failure of the structure. AbstractOver the last two decades, the repair of existing engineering structures using fiber reinforced polymer composites has attracted a great attention by aerospace industry, as it is more economical than replacing new. With an increased use of composite material in aerospace field, it is thus essential to restore the structural integrity by repair of damaged part. Concerns regarding the long term durability of composite repair bonded joints have been a major obstacle for critical component of aerospace structures. This paper reviews the current research on the environmental durability of adhesive bonded repair of composite structures to focus on the durability concerns and suggestion on the research needed in this area. The most important environmental factors (moisture and temperature) are reviewed thoroughly and also combined environmental effect. Finite element methods used to predict the environmental influence on the composite bonded joints are briefly reviewed. Finally, the paper concludes with key findings, opportunities and future research topics in order to develop cost effective, better quality and reliable composite repair bonded joints.

show abstract

“…Three-dimensional braided carbon fiber reinforced epoxy (C 3D /EP) composites are excellent materials for surgery or aviation because of their good properties, such as improved overall performance, high strength, desirable modulus, splendid friction and wear characteristics, etc [2,3]. The deposition of some coatings on the surface of C 3D /EP composites will be greatly helpful to their applications.…”

Section: Introductionmentioning

confidence: 99%

Air dielectric barrier discharges plasma surface treatment of three-dimensional braided carbon fiber reinforced epoxy composites

Liang

et al. 2009

Surface and Coatings Technology

View full text Add to dashboard Cite

Moisture sorption and mechanical degradation of VARTMed three-dimensional braided carbon–epoxy composites

Cited by 30 publications

References 20 publications

Non-fickian three-dimensional hindered moisture absorption in polymeric composites: Model development and validation

Non-fickian three-dimensional hindered moisture absorption in polymeric composites: Model development and validation

Bonded repair of composite structures in aerospace application: a review on environmental issues

Air dielectric barrier discharges plasma surface treatment of three-dimensional braided carbon fiber reinforced epoxy composites

Contact Info

Product

Resources

About