The effect of imperfect bonding on the pull-out behavior of non-crimp fabric Pi-shaped joints

Τσερπές, Κωνσταντίνος; Pantelakis, Spiros; Kappatos, Vassilios

doi:10.1016/j.commatsci.2010.05.012

Cited by 21 publications

(22 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…A representative one is an investigation conducted on Pi joints. 4 In Ref. 4, beside the joining advantages mentioned previously, the Pi shaped profiles were found also capable of joining panels in a vertical T shaped configuration something impossible by mechanical fastening.…”

Section: Introductionmentioning

confidence: 90%

Assessment of imperfect bonding of adhesively bonded U-joints using ultrasonic inspection

Katsiropoulos

Pantelakis

2014

Plastics, Rubber and Composites

View full text Add to dashboard Cite

Ongoing research in the area of adhesive bonding is focused on the optimization of the bonding method used as well as on the use of newly developed high quality adhesives. In this work, the bonding quality of adhesively bonded composite U-joints was experimentally investigated using C-Scan ultrasonic inspection. The reference adhesive used was Epibond, while the newly developed adhesive was the one developed within the ABITAS project. Based on the geometry of the U-joint, different scan areas of the two existing bondlines were defined in order to effectively capture the quality of the entire bonded area. Furthermore, two different bonding methods were evaluated in terms of bonding quality assessed through the ultrasonic inspection tests. In this frame, U-joints including normal cured and spot cured bonded areas have been investigated. The evaluation was carried out on the basis of the total defected area by using the clustering mode of ULTRAWIN image analysis software. This mode enables the quantitative assessment of the defective percentage (%) out of the total scanned area. The results reveal a significant amount of voids in the components investigated. In most cases, spot curing areas are clearly distinguishable. The spot curing process causes a variation of the adhesive layer thickness and the creation of bubbles. Comparison between the conventional and the newly developed adhesive was made; for components using the conventional adhesive, damage is located mostly around the rivets, probably due to the increased local pressure.

show abstract

Section: Introductionmentioning

confidence: 90%

Assessment of imperfect bonding of adhesively bonded U-joints using ultrasonic inspection

Katsiropoulos

Pantelakis

2014

Plastics, Rubber and Composites

View full text Add to dashboard Cite

show abstract

“…assembly is largely dependent upon the bonding quality [11][12][13]. However, to ensure the bonding quality needs strict manufacturing process ensured by solid quality inspection system [14], thereby increasing manufacturing costs.…”

Section: A C C E P T E D Accepted Manuscriptmentioning

confidence: 99%

Experimental and numerical investigation of composite bolted π-joint subjected to bending load

Fan

Cheng

Wang

et al. 2015

Composites Part B: Engineering

View full text Add to dashboard Cite

“…In recent years, the strength and damage mechanism of conventional π-joints under tensile loads have been well investigated through some numerical methods such as 2D plane-stress model [14], zigzag elements model [15], multi-software integration model [16] and mesomechanical model [17]. Usually, the initial cracks occur in the interfaces between L and U preforms with the fillers around fillets, which will induce the delamination in between π-joint and fundamental structure.…”

Section: Introductionmentioning

confidence: 99%

Analysis and design improvement of composite bolted π-joints under bending load

Cheng

et al. 2020

J Braz. Soc. Mech. Sci. Eng.

View full text Add to dashboard Cite

A 3D progressive model with better convergence property is established to capture the mechanical properties and damage mechanism of a composite bolted π-joint under bending load and shown to closely match experimental results. This model is then used to investigate the effect of internal laminate stacking sequence and surface layers thickness on the bending performance of the joint. It was found that the stacking sequence and the surface layers thickness have a significant effect on the matrix crack and delamination distributions in the joint, respectively. Local surface layer thickness can be designed to control the delamination damage around the bolt hole. Finally, volume fraction of 0° layer in the internal laminate and surface layer thickness are used to improve the joint bending performances by proper design.

show abstract

The effect of imperfect bonding on the pull-out behavior of non-crimp fabric Pi-shaped joints

Cited by 21 publications

References 2 publications

Assessment of imperfect bonding of adhesively bonded U-joints using ultrasonic inspection

Assessment of imperfect bonding of adhesively bonded U-joints using ultrasonic inspection

Experimental and numerical investigation of composite bolted π-joint subjected to bending load

Analysis and design improvement of composite bolted π-joints under bending load

Contact Info

Product

Resources

About