Related Papers
Experimental Investigation for the Design of Epoxy Bonding in Joints of Carbon Fibre Laminates
2017 •
Felice Sfravara
Numerous applications involve the use of composite material in order to increase the ratio between strength and weight and in order to increase the flexibility of the design. There is an intensive use of this material also in naval building, principally for recreational boat. Experimental and numerical tests allow having a deep knowledge of the response of this kind of material in different load conditions. In order to accommodate the complexity of the design, usually it is necessary to use bonding for jointing different elements. The work deals with a series of experimental tests for the assessment of the head joint between two carbon laminates. Tests carried out with different angles between the two linked elements in order to evaluate the response of the bonding to different stresses direction. The studied conditions are for 45°, 90°, 135° and 180° with forces applied in both closing and opening direction. The bonding under investigation has a double epoxy resin glues. Thanks to ...
Progress in Polymer Science
Low temperature curing epoxies for structural repair
1994 •
Samuel Kenig
Reduction of moisture effects during the cure of epoxy adhesives used in composite repair
George Sivy
The requirements for repair work on Naval aircraft composite wing skins that can be performed under depot conditions (or still worse, under field conditions) are quite restrictive. Equipment that can be used is rather limited as are the available repair space and time. The procedures must be simple enough so that they can be performed satisfactorily by personnel without special knowledge in composite materials technology. Repairs of small holes should not require more than perhaps a short predrying cycle (with heat guns) and a subsequent patch bonding using a heating blanket, held in place by applying a vacuum. However, it has been observed during simulated experimental repair work that the glue lines frequently show a high content of pores and bubbles which are attributed to evaporation of moisture during the curing cycle. (Of course, other volatile materials such as residual solvent would act similarly). The purpose of this paper is to give some detailed analysis of the problem of...
International Journal of Adhesion and Adhesives
Testing of adhesives for bonding of polymer composites
2002 •
Vladimir Cech
Polymers for Advanced Technologies
Epoxy‐based composite adhesives: Effect of hybrid fillers on thermal conductivity, rheology, and lap shear strength
2019 •
Swarnalata Sahoo
Adhesive bonding of composite adherends: The effect of adherend type on the apparent mode I fracture toughness
Lisa Cahill
Evaluation of Alternative Peel Ply Surface Preparation Methods of SC-15 Epoxy/Fiberglass Composite Surfaces for Secondary Bonding
Daphne Pappas
Because of the extensive costs associated with building composite laminates, the U.S. Army is exploring approaches to reduce the processing steps associated with hybridized structures. One area of focus is in surface preparation for secondary bonding. An important quality of an effective surface preparation method is its ability to consistently provide clean and highly chemically active substrates for bonding. In this report, we examine peel ply surface preparation methods for secondary bonding of composite substrates using FM 94K epoxy film adhesive by mechanical testing, elemental surface analysis, and high-resolution imaging of failure surfaces. Woven S2 fiberglass infused with SC-15-toughened epoxy resin composite laminates was fabricated by the vacuum-assisted resin transfer molding process. Tool-side surfaces of the composites were prepared using nine commercial off-the-shelf peel plies, including dry and impregnated forms. Two preparation methods for bonding were investigated...
The journal of advanced prosthodontics
Shear bond strength of composite resin to high performance polymer PEKK according to surface treatments and bonding materials
2017 •
Jae-jun Ryu
The object of the present study was to evaluate the shear bonding strength of composite to PEKK by applying several methods of surface treatment associated with various bonding materials. One hundred and fifty PEKK specimens were assigned randomly to fifteen groups (n = 10) with the combination of three different surface treatments (95% sulfuric acid etching, airborne abrasion with 50 µm alumina, and airborne abrasion with 110 µm silica-coating alumina) and five different bonding materials (Luxatemp Glaze & Bond, Visio.link, All-Bond Universal, Single Bond Universal, and Monobond Plus with Heliobond). After surface treatment, surface roughness and contact angles were examined. Topography modifications after surface treatment were assessed with scanning electron microscopy. Resin composite was mounted on each specimen and then subjected to shear bond strength (SBS) test. SBS data were analyzed statistically using two-way ANOVA, and post-hoc Tukey's test (P<.05). Regardless of ...
Composite Structures
Co-cure joining of epoxy composites with rapidly UV-irradiated PEEK and PPS composites to achieve high structural integrity
2020 •
Rinze Benedictus
