Mechanical properties of a new type super hybrid material

Haga, Osamu; Koyama, Hideo; Kawada, Katumi

doi:10.1163/156855196x00059

Cited by 12 publications

(4 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, with regard to the joints between composite and light metal parts, mechanical jointing such as riveting and bolting would always cause damage to the strength of composites. Comparably, on the one hand, adhesive bonding has the advantage of lower weight and cost , and higher resistance to contact corrosion and Galvanic corrosion, which could prolong the service lifespan under cycling loads. On the other hand, adhesive bonding gives fairly uniform stress distribution without destroying carbon fibers in reinforced plastics .…”

Section: Introductionmentioning

confidence: 99%

Experimental and Theoretical Investigation of Laser Pretreatment on Strengthening the Heterojunction between Carbon Fiber-Reinforced Plastic and Aluminum Alloy

Li¹,

Meng²,

Gong³

et al. 2019

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Besides aluminum alloys, lightweight carbon fiber-reinforced plastics (CFRPs) have been adopted progressively in automobiles to save energy and reduce emission, so constructing a reliable heterojunction between aluminum alloys and CFRPs has come to be the key issue. In this study, ultrafast picosecond infrared (IR) and excimer ultraviolet (UV) lasers were introduced to pretreat the joint surface to enhance the adhesive strength. Scanning electron microscopy, white light interferometry, and X-ray photoelectron spectroscopy examinations indicated that because the energy absorptivities for the two lasers were different, the variation of the roughness, wettability, and chemical composition were a little different for the patterned surface. Correspondingly, the shear strengths of the adhesive joints were increased from 5.6 to 24.8 and 21.9 MPa for IR and UV laser-pretreated samples, respectively. Furthermore, finite element analysis was adopted to evaluate the effects of strengthened mechanical interlocking and fortified chemical bonding force on the enhancement of joint strength. It was shown that chemical bonding, instead of mechanical interlocking, played the dominant role in reinforcing the heterogeneous joints. As a whole, the picosecond IR laser was more preferable for surface pretreatment in adhesive heterojunctions due to its higher processing and enhancing efficiency.

show abstract

Section: Introductionmentioning

confidence: 99%

Experimental and Theoretical Investigation of Laser Pretreatment on Strengthening the Heterojunction between Carbon Fiber-Reinforced Plastic and Aluminum Alloy

Li¹,

Meng²,

Gong³

et al. 2019

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

show abstract

“…Accordingly, demand for reliable joining techniques for CFRTPs to metals has increased. Compared to mechanical joining such as welding, rivets, and bolt fastening, adhesive bonding has the advantage of lower weight, lower cost, , prevention of electrolytic corrosion, , and dispersion of stress over the entire bonding. However, the heat distortion temperatures of adhesives are closer to operating temperatures compared to mechanical joining, so the safety of adhesive bonding is much concerned regarding mechanical resistance and durability under aggressive service environments.…”

Section: Introductionmentioning

confidence: 99%

Toughness and Durability of Interfaces in Dissimilar Adhesive Joints of Aluminum and Carbon-Fiber-Reinforced Thermoplastics

et al. 2020

View full text Add to dashboard Cite

The toughness and the durability under a high humidity condition of the interfaces in dissimilar adhesive joints of carbon-fiber-reinforced thermoplastic with a polyamide-6 matrix and Al alloy were evaluated by two test methods, in which a tensile opening load was applied to the specimens to cleave the interfaces apart in two different ways. In the double cantilever beam (DCB) test, the specimens were continuously pulled apart at a constant velocity, while in the wedge test, the specimens are pulled apart at a constant displacement. The crack growth along the interface in the DCB test was dynamically monitored with the assistance of mechanoluminescence for the accurate detection of the phenomena at the crack tip. The wedge test was employed for the evaluation of the durability of the interfaces under high humidity conditions. It was found that the adhesive joints were failed by various failure modes depending on the surface pretreatment and environmental conditions. Throughout the work, discussion was made concerned with the interfacial structures and the adhesion mechanism of dissimilar adhesive joints.

show abstract

“…[1][2][3] In particular, refined structures with controlled orientation using small quantities of inorganic fillers in polymer-based composites can control the deformation, failure, electrical resistance, and thermal properties. [1][2][3] In particular, refined structures with controlled orientation using small quantities of inorganic fillers in polymer-based composites can control the deformation, failure, electrical resistance, and thermal properties.…”

Section: Introductionmentioning

confidence: 99%

“…R ESEARCH covering the fabrication of super hybrid materials with anisotropic control of the nanofillers is of considerable interest. [1][2][3] In particular, refined structures with controlled orientation using small quantities of inorganic fillers in polymer-based composites can control the deformation, failure, electrical resistance, and thermal properties. 4,5 Among these, polymer/ceramic nanocomposites have ideal coordination for use as thermal interface materials, which are used as peripheral devices in the semiconductor industry to facilitate effective heat dissipation with electrical insulation.…”

Section: Introductionmentioning

confidence: 99%

Field‐Induced Orientation of Hexagonal Boron Nitride Nanosheets Using Microscopic Mold for Thermal Interface Materials

et al. 2011

View full text Add to dashboard Cite

The orientation of hexagonal boron nitride (BN) nanosheets was controlled in polymer‐based nanocomposite film using microscopic molds while applying a dc electric field. The hexagonal BN nanosheets were dispersed by sonication in a prepolymer mixture of polysiloxane followed by high speed mixing. The homogeneous suspension was cast on a microscopic mold with different patterns, which was attached to a positive electrode during application of an electric field before it became cross‐linked. Analysis revealed that filament‐like linear assemblies of BN nanosheets (LABNs) were fabricated in polysiloxane/BN nanosheet composite films, and the LABNs were aligned perpendicular to the film plane with high anisotropy. The anisotropy of BN nanosheets and dimensions of LABNs were directly related with the thermal properties of the composite, and could be changed according to the type of microscopic mold used. LABN formation and the heat conduction mechanisms induced by the type of microscopic mold and the intensity of the applied electric fields are discussed.

show abstract

Mechanical properties of a new type super hybrid material

Cited by 12 publications

References 4 publications

Experimental and Theoretical Investigation of Laser Pretreatment on Strengthening the Heterojunction between Carbon Fiber-Reinforced Plastic and Aluminum Alloy

Experimental and Theoretical Investigation of Laser Pretreatment on Strengthening the Heterojunction between Carbon Fiber-Reinforced Plastic and Aluminum Alloy

Toughness and Durability of Interfaces in Dissimilar Adhesive Joints of Aluminum and Carbon-Fiber-Reinforced Thermoplastics

Field‐Induced Orientation of Hexagonal Boron Nitride Nanosheets Using Microscopic Mold for Thermal Interface Materials

Contact Info

Product

Resources

About