The effect of residual stresses on the formation of transverse cracks in adhesive joints for wind turbine blades

Jørgensen, Jeppe Bjørn; Sørensen, Bent F.; Kildegaard, C.

doi:10.1016/j.ijsolstr.2018.12.020

Cited by 17 publications

(11 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The method is promising for mechanobiology and mechanics of composite materials. The implemented plasticity model can be useful for the prediction of residual stresses caused by chemical curing [25,16,14]. The more accurate simulation of residual stresses allows for a rational analysis of deformation and damage in prestressed structures.…”

Section: Conclusion and Discussionmentioning

confidence: 99%

Combined experimental/theoretical approach to residual stresses within multiplicative elasto-plasticity

Tagiltsev¹,

Shutov²

2021

Preprint

View full text Add to dashboard Cite

The study is devoted to geometrically non-linear modelling of viscoplastic structures with residual stresses. We advocate and develop a special approach to residual stresses based on the transition between reference configurations. The finite strain kinematics of the viscoplastic material is modelled by the multiplicative decomposition of the deformation gradient tensor. Numerical algorithms originally developed for unstressed materials are extended to materials with pre-stresses. Owing to the weak invariance of constitutive equations, the incorporation of pre-stresses happens without additional costs. Thus, the advocated approach is especially efficient. A novel experimental/theoretical method for assessment of residual stresses in welded structures is presented; the method combines advantages of purely experimental and theoretical approaches. To demonstrate the applicability of the proposed procedure, we simulate plate welding. As an example we show that the procedure allows to extrapolate the filed of residual stresses away from the measurement points.As another example, we address the reduction of weldment-related residual stresses by mechanical treatment.

show abstract

Section: Conclusion and Discussionmentioning

confidence: 99%

Combined experimental/theoretical approach to residual stresses within multiplicative elasto-plasticity

Tagiltsev¹,

Shutov²

2021

Preprint

View full text Add to dashboard Cite

show abstract

“…56,57 Inclusion of cure residual stresses in designing adhesive joints becomes crucial for wind turbine blades that are fatigue critical. 58,59 For woven composites, the procedure outlined in this work can be adopted to obtain a comprehensive analysis of manufacturing induced cure residual stresses correlating performance with processing within an integrated computational framework.…”

Section: Distortion In Cfrp Laminatementioning

confidence: 99%

“…[2][3][4][5] Additionally, process induced cure residual strains (CRS) caused during the polymerization results in additional damage modes that degrades the load carrying capability of these structures. 6,7 Cure residual stress often leads to matrix cracking, which further propagates to structural failure during service load conditions. Furthermore, polymer composite structures are typically accompanied by significant process induced distortions that affects the final assembly and usage.…”

Section: Introductionmentioning

confidence: 99%

Characterization of cure residual strain development and associated structural distortion in carbon fiber polymer matrix composites

Mahto

Kubher

Gururaja

2022

Journal of Composite Materials

View full text Add to dashboard Cite

A comprehensive experimental methodology has been developed to measure the in situ cure residual strain (CRS) generation in carbon fiber reinforced polymer (CFRP) laminates using embedded fiber Bragg grating (FBG) sensors. In order to delineate the effect of anisotropy, heterogeneity, laminate thickness and geometry, in situ CRS is measured in pristine epoxy, uni-directional (UD)-CFRPs, multi-directional (MD)-CFRPs and L-shaped MD-CFRP laminates. In this study, emphasis is laid on quantifying the variation in CRS magnitudes as a function of laminates lay-up sequence and thickness. Calibration of FBG sensors are carried out by following well established procedures. Structural distortion due to CRS is correlated using embedded FBG sensor and measured using the coordinate measurement machine (CMM). The presented results show a uniform CRS development across the thickness in MD-CFRP laminates as compared to L-shaped MD-CFRP laminates.

show abstract

“…It should be noted that many investigations were conducted on transverse tunnelling cracks in adhesive joints [5][6][7][8][9], and sandwich structures [10][11][12]. The transverse cracks referred in these studies are essentially tunnelling cracks and mainly under cyclic loading.…”

Section: Introductionmentioning

confidence: 99%

Structural transverse cracking mechanisms of trailing edge regions in composite wind turbine blades

Miao

Xiao

2023

Composite Structures

View full text Add to dashboard Cite

The effect of residual stresses on the formation of transverse cracks in adhesive joints for wind turbine blades

Cited by 17 publications

References 48 publications

Combined experimental/theoretical approach to residual stresses within multiplicative elasto-plasticity

Combined experimental/theoretical approach to residual stresses within multiplicative elasto-plasticity

Characterization of cure residual strain development and associated structural distortion in carbon fiber polymer matrix composites

Structural transverse cracking mechanisms of trailing edge regions in composite wind turbine blades

Contact Info

Product

Resources

About