Effects of loading rates on mechanical property and failure behavior of single-lap adhesive joints with carbon fiber reinforced plastics and aluminum alloys

Wang, Shaoluo; Liang, Wei; Duan, Liming; Li, Guangyao; Cui, Junjia

doi:10.1007/s00170-019-04804-w

Cited by 35 publications

(9 citation statements)

References 23 publications

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“…The damage is thought to have grown into large damage through the increasing and combining of the multiple small pieces of surface damage as the applied current density increased. In this way, as the size of the surface damage increases, the stress energy is concentrated, degrading the mechanical characteristics and durability with even a small amount of external stress [27,28].…”

Section: Resultsmentioning

confidence: 99%

Effect of hydrogen embrittlement on the adhesion strength and wear resistance of DLC-coated 316L stainless steel for application in hydrogen valves of FCEVs

Kim,

Shin

2024

Preprint

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Diamond-like carbon (DLC) coating is a surface coating technology with excellent hydrogen permeation resistance and wear resistance. However, it is difficult to completely prevent hydrogen permeation, and when hydrogen penetrates into the coating layer, the DLC coating is adversely affected. Therefore, we investigated the effect of hydrogen embrittlment on the adhesion strength and wear resistance of the DLC coating layer. As the results of the research, the surface roughness of the DLC coating was increased by a maximum of 3.8 times with hydrogen charging, and the delamination ratio of the DLC coating reached about 58%. In addition, the Lc3, which refers to the adhesion strength corresponding to the complete delamination of the DLC coating, was decreased by a maximum of 2.0 N due to hydrogen permeation. In addition, the wear resistance decreased due to hydrogen permeation, and the exposed width of the substrate due to wear increased by more than 4 times. It was also determined that hydrogen blistering or hydrogen-induced cracking occurred at the interface between the DLC coating and the chromium buffer layer due to hydrogen permeation, which decreased the durability of the DLC coating.

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Section: Resultsmentioning

confidence: 99%

Effect of hydrogen embrittlement on the adhesion strength and wear resistance of DLC-coated 316L stainless steel for application in hydrogen valves of FCEVs

Kim,

Shin

2024

Preprint

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“…In general, the larger and deeper the damage on the surface of a material, the easier for the stress energy to be concentrated so that the mechanical characteristics deteriorate rapidly even with a small stress, and in severe cases, the material is destroyed. 32,33) Consequently, it is considered that if aluminum alloys are exposed to a hydrogen environment for a long time, surface damage will occur so that the service life will be reduced.…”

Section: Resultsmentioning

confidence: 99%

Effect of hydrogen charging on the mechanical characteristics and coating layer of CrN-coated aluminum alloy for light-weight FCEVs

Shin

Kim

2023

Jpn. J. Appl. Phys.

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To commercialize the fuel cell electric vehicles(FCEVs), it is essential to reduce the weights of the components and lower the manufacturing cost. In this research, the effect of hydrogen charging on the mechanical characteristics of aluminum alloys and CrN coating was also investigated through cathodic hydrogen charging, indentation, and scratch experiments. The delamination of the CrN coating by hydrogen charging was observed through the experiments. In addition, as the hydrogen charging time increased, the hardness of the aluminum alloy increased about 29.7%, whereas the hardness of the CrN coating decreased about 42.8%. In particular, in the scratch experiment, it was found that hydrogen embrittlement and hydrogen blistering occurred at the interface between the CrN coating layer and the aluminum alloy due to hydrogen permeation and diffusion. Therefore the adhesion strength of the CrN coating decreased significantly. However, the CrN coating was presented to suppress hydrogen permeation into the aluminum alloy.

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“…However, CFRP only has about 1-2% elastic strain before failure [10]. Therefore, if aluminum alloy is used as the substrate and CFRP is used for strengthening, it can not only enhance the overall strength but also balance the overall toughness of composite materials, and has high impact energy absorption capacity [11,12].…”

Section: Introductionmentioning

confidence: 99%

Research on the Joint Strength of 6061 Aluminum Alloy/CFRP Multi-layer Laminate Made by Stamping-Joining Integrated Process

Liu¹,

Chen²,

Zhu³

et al. 2023

Atlantis Highlights in Materials Science and Technology

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Automobile lightening is a direct and effective measure to realize energy saving and emission reduction. Using aluminum alloy and carbon fiber reinforced polymers (CFRP) composite materials to manufacture automobile parts can greatly reduce weight while enhance the overall strength and balance the overall toughness of the composite materials, and obtain high impact energy absorption capacity. In order to explore the feasibility of stamping-joining by hot stamping process for aluminum alloy and CFRP, using peeling test, the effects of different surface treatments of the aluminum alloy, different holding time and pressures in stamping-bonding stage on the strength of 6061 aluminum alloy/CFRP composite joints were studied. The results indicated that the joint shear strength after grinding, alkali washing and pickling the aluminum alloy's surface was 2.5 MPa, 4.3 MPa and 4.6 MPa respectively, which were increased by 155.4%, 338.77% and 369.38%, respectively. In the stamping-joining stage, when the holding time was less than 60 s, the joint shear strength increased rapidly to about 4.90 MPa, whereas the holding time is more than 60 s, the joint shear strength decreased and kept stable, remaining in the range of 3.92 to 4.34 MPa. When holding pressure was 1.0 MPa, the maximum shear strength was 4.90 MP; however, increasing the holding pressure may lead to resin overflowing.

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Effects of loading rates on mechanical property and failure behavior of single-lap adhesive joints with carbon fiber reinforced plastics and aluminum alloys

Cited by 35 publications

References 23 publications

Effect of hydrogen embrittlement on the adhesion strength and wear resistance of DLC-coated 316L stainless steel for application in hydrogen valves of FCEVs

Effect of hydrogen embrittlement on the adhesion strength and wear resistance of DLC-coated 316L stainless steel for application in hydrogen valves of FCEVs

Effect of hydrogen charging on the mechanical characteristics and coating layer of CrN-coated aluminum alloy for light-weight FCEVs

Research on the Joint Strength of 6061 Aluminum Alloy/CFRP Multi-layer Laminate Made by Stamping-Joining Integrated Process

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