Analysis of the fatigue behaviour of laminated composite holes subjected to pin-bearing loads

Sypt, Paul Van Der; Chérif, Mehdi; Bois, Christophe

doi:10.1016/j.ijfatigue.2017.05.025

Cited by 25 publications

(16 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Polymer composites must be drilled with the optimized parameters to avoid drilling-induced damage. 31–33…”

Section: Introductionmentioning

confidence: 99%

“…The existing damages gradually increase due to contact of the bolts/ rivets and maybe results in catastrophic errors. 31 Besides matrix degradation due to overheating during drilling causes different mechanical failures as fibre pull-out, fiber breakage, matrix cracking, peel-up delamination, push-out delamination. Polymer composites must be drilled with the optimized parameters to avoid drilling-induced damage.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effects of cutting temperature and process optimization in drilling of GFRP composites

Ertürk

Vatansever

Yarar

et al. 2020

Journal of Composite Materials

View full text Add to dashboard Cite

The present work deals with temperature effects and parametric optimization in the drilling of continuous glass fiber reinforced epoxy composite. Drilling ability was examined operating a drilling system with different drill bits, feed rate, and spindle speed parameters. The investigation was performed by changing the tool and composite interface. Drilling experiments were carried out under the dry condition. Thrust force and drilling temperatures were measured using dynamometer and thermal camera. Peel-up and push-out delamination were evaluated using an image analyzing tool. Results show that the tribo-mechanical behavior of the drilling operation is affected at different levels by tool coating. This behavior is related to the intrinsic friction properties of coating nature. Response surface methodology was used in the evaluation of experiment results. The feed rate of 0.13 mm/rev, spindle speed of 2425 rpm and HSS-TiN drill bit are found as an optimum drilling parameters and drill type.

show abstract

“…Polymer composites must be drilled with the optimized parameters to avoid drilling-induced damage. 31–33…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of cutting temperature and process optimization in drilling of GFRP composites

Ertürk

Vatansever

Yarar

et al. 2020

Journal of Composite Materials

View full text Add to dashboard Cite

show abstract

“…This technique has been applied to fatigue damage assessment of composite structures, 5,6 but the disadvantage is that it is not capable of continuous monitoring of real operating structures. The digital image correlation (DIC) technique allows real‐time and non‐contact interrogation of the surface displacement as well as strain distributions of composite structures under fatigue loadings 7,8 . However, DIC requires a speckle pattern on the surface of the structure and extensive calibration; thus, it has poor applicability for continuous monitoring of real structures.…”

Section: Introductionmentioning

confidence: 99%

Fatigue damage detection and growth monitoring for composite structure using coda wave interferometry

Lim

Lee

Skinner

et al. 2020

Struct Control Health Monit

View full text Add to dashboard Cite

Summary This paper presents the development of a fatigue damage detection and growth monitoring technique based on coda wave interferometry (CWI) for composite structures. The time domain distortion (TD) component of coda waves, which is typically ignored as noise in the literature, is used and experimentally validated. First, a widely used signal processing method for CWI called the stretching method is applied, and TD component is extracted in the time domain. Next, threshold values are statistically estimated using noise levels of the signal and compared with the amplitude of TD component for detecting early‐stage fatigue damage. A damage index (DI) is then obtained from TD component and used to monitor fatigue damage growth. The experimental results of the damage detection and growth monitoring are validated through visual inspection during the fatigue test. Finally, the developed technique's performance is evaluated by comparing it to conventional ultrasonic and CWI‐based composite fatigue damage assessment methods. The uniqueness of this study lies in (1) detection and growth monitoring of the early‐stage composite fatigue damage, (2) extraction and use of TD component of CWI and investigation of the correlation with the damage existence and growth, and (3) experimental validation and performance examination by comparing with the conventional ultrasonic and CWI‐based composite fatigue damage assessment methods.

show abstract

“…DIC is applied to different problems in composites, such as 3D woven carbon/epoxy composite to characterize the strain field distribution during quasi-static tests [ 37 ] or to locate the fracture initiation in the GFRP tensile tests [ 62 ]. It has been also applied to fatigue studies, for example, to determine the interlaminar shear stress distributions and their variations with the number of cycles for carbon/epoxy composites [ 51 ] or to measure deformations on the pin surface for low cycle fatigue loads [ 63 ].…”

Section: Introductionmentioning

confidence: 99%

An Experimental and Numerical Investigation to Characterize an Aerospace Composite Material with Open-Hole Using Non-Destructive Techniques

Feito

Calvo

Belda

et al. 2020

Sensors

View full text Add to dashboard Cite

In this study, the open-hole quasi-static tensile and fatigue loading behavior of a multidirectional CFRP thick laminate, representative of laminates used in the aerospace industry, is studied. Non-destructive techniques such as infrared thermographic (IRT) and digital image correlation (DIC) are used to analyze the behavior of this material. We aim at characterizing the influence of the manufacturing defects and the stress concentrator through the temperature variation and strain distribution during fatigue and quasi-static tests. On the one hand, the fatigue specimens were tested in two main perpendicular directions of the laminate. The results revealed that manufacturing defects such as fiber waviness can have a major impact than open-hole stress concentrator on raising the material temperature and causing fracture. In addition, the number of plies with fibers oriented in the load direction can drastically reduce the temperature increment in the laminate. On the other hand, the quasi-static tensile tests showed that the strain distribution around the hole is able to predict the crack initiation and progression in the external plies. Finally, the experimental quasi-static tests were numerically simulated using the finite element method showing good agreement between the numerical and experimental results.

show abstract

Analysis of the fatigue behaviour of laminated composite holes subjected to pin-bearing loads

Cited by 25 publications

References 30 publications

Effects of cutting temperature and process optimization in drilling of GFRP composites

Effects of cutting temperature and process optimization in drilling of GFRP composites

Fatigue damage detection and growth monitoring for composite structure using coda wave interferometry

An Experimental and Numerical Investigation to Characterize an Aerospace Composite Material with Open-Hole Using Non-Destructive Techniques

Contact Info

Product

Resources

About