Dynamic behavior of CFRP/Ti single-lap pinned joints under longitudinal electromagnetic dynamic loading

Zuo, Yangjie; Cao, Zengqiang; Cao, Yuejie; Zhang, Qiliang; Wang, Wukun

doi:10.1016/j.compstruct.2017.09.079

Cited by 36 publications

(8 citation statements)

References 40 publications

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“…According to earlier research, 10,28 although interference fit causes micro-damage on the hole side wall, the contribution of gain exceeds that of weakening, at an appropriate interference fit size. Consequently, a firm connection can form and the contact area increases, thus decreasing the related stress.…”

Section: Tensile Strengthmentioning

confidence: 80%

Effect of imbalanced interface pre-tightening force on the bearing behavior of carbon fiber reinforced polymer interference-fit lap joint

Lai

Zou³

et al. 2021

Advances in Mechanical Engineering

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Interference-fit is attracting increasing attention in the aerospace field because of its excellent enhancement of the sealing and fatigue life of carbon fiber reinforced plastic (CFRP). However, it also induces imbalanced pre-tightening forces on the interface, and affects its mechanical behavior. A series of experiments were conducted to assess the imbalanced pre-tightening force of CFRP interference bolted joints and its effects. High-precision washer force sensors were used to measure the pre-tightening force between upper and lower surfaces at various interference-fit and torque. Strain gauges were used to estimate the varying effect on the imbalanced pre-tightening force during tensile tests. The effects of varying interference-fit and torque on pre-loaded transfer, surface strain distribution, tensile strength, and damage mode were identified. The results show that the synergy of interference-fit and torque induces an imbalanced pre-tightening force, which, in turn, changes the stress-strain evolution of the surface, and a special “transition regime” was identified in the evolution curves. Compared with clearance-fit, the ultimate strength and optimal torque of interference-fit joints could be significantly enhanced. In addition, the damage originates from fiber/matrix slipping to the upper surface with a low pre-tightening force and the formation of stack buckling, which then causes delamination fracture.

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Section: Tensile Strengthmentioning

confidence: 80%

Effect of imbalanced interface pre-tightening force on the bearing behavior of carbon fiber reinforced polymer interference-fit lap joint

Lai

Zou³

et al. 2021

Advances in Mechanical Engineering

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“…In addition, composite materials such as CFRP also possess features such as high specific strength and specific stiffness. However, for complex force-transmitting structures, the structural design of composite materials is complicated [4].…”

Section: Introductionmentioning

confidence: 99%

Electromagnetic pulse-induced acoustic testing and the pulsed guided wave propagation in composite/metal adhesive bonding specimens

Sun

Kosukegawa

Takagi

et al. 2021

Composites Science and Technology

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Materials composed of metals and plastic composites joined through adhesive bonding are being increasingly used. However, debonding of such materials may occur during manufacture or use. Nondestructive testing of adhesive bonding structures is required to evaluate their debonding. Herein, electromagnetic pulse-induced acoustic testing (EPAT) was used to detect debonding at the adhesive joint in plastic composite/metal specimens. EPAT uses a pulsed excitation current to generate guided waves in a specimen to detect debonding without contact, which makes it suitable for testing from the plastic composite side. Simulations were performed to analyze acrylic/aluminum (Al) and carbon fiber-reinforced plastic (CFRP)/Al specimens. The results showed that the Lorentz force in the z direction was the dominant mechanism in the generation of guided waves, and mainly the A0-mode Lamb wave was excited. The simulation and experimental results revealed that for specimens where the mechanical parameters of the plastic composite layer differed greatly from those of the metal, such as the acrylic/Al specimen, debonding

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“…With the increasing awareness of environmental protection in the industrial manufacturing industry, manufacturing standard is moving towards the direction of lightweight to reduce carbon emissions and save energy [1][2][3]. Resin based carbon fiber reinforced thermal-plastics (CFRP) is considered as a new type of high-performance composite materials, which obtains the advantages of small density, excellent corrosion resistance and high specific strength [4][5][6]. Therefore, it can be used even as the bearing material applying in the preparation of the aerospace field and crucial parts and components in automobile industry [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

“…Resin based carbon fiber reinforced thermal-plastics (CFRP) is considered as a new type of high-performance composite materials, which obtains the advantages of small density, excellent corrosion resistance and high specific strength [4][5][6]. Therefore, it can be used even as the bearing material applying in the preparation of the aerospace field and crucial parts and components in automobile industry [6][7][8]. However, as the impact toughness and the wear resistance of CFRP is relatively poor, its application are strictly limited in industry [9].…”

Section: Introductionmentioning

confidence: 99%

Interfacial Microstructure and Formation of Direct Laser Welded CFRP/Ti-6Al-4V Joint

Zou

Zhang

Lei

et al. 2021

Metals

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Joining fiber reinforced polyether ether ketone resin matrix composite (PEEK-CFRP) with Ti-6Al-4V titanium alloy to form a composite structure is a promising manufacturing process. Huge difference of material properties is the biggies challenge to join them. Continuous laser welding process is conducted in this experiment to join the two materials. In this study, joints under different welding speeds were obtained. Mechanical properties and microstructures were observed, and the interfacial structures were tested. The results showed that fixed joint could be obtained. As the welding speed decreased, the tensile shear first increased and then decreased. The shear force reached a maximum value of 36.8 N/mm at the speed of 10 mm/s. The quality of joint could be observably affected by welding speed. The formation of bubbles, cracks, and anchor effect at the interface were the main factors affecting the mechanical property of joint. Thus, adhesion failure was the main failure form for CFRP fracture. Ti, Al and some other elements had been diffused across the interface, resulting in the formation of intermediate transition layer. The result of EDS, X-ray and XPS test indicated that CTi0.42V1.58 phase could be formed, and Ti at the interface could react with the oxygen and carbon of CFRP to form TiO2, TiO and TiC, forming a stable joint structure.

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Dynamic behavior of CFRP/Ti single-lap pinned joints under longitudinal electromagnetic dynamic loading

Cited by 36 publications

References 40 publications

Effect of imbalanced interface pre-tightening force on the bearing behavior of carbon fiber reinforced polymer interference-fit lap joint

Effect of imbalanced interface pre-tightening force on the bearing behavior of carbon fiber reinforced polymer interference-fit lap joint

Electromagnetic pulse-induced acoustic testing and the pulsed guided wave propagation in composite/metal adhesive bonding specimens

Interfacial Microstructure and Formation of Direct Laser Welded CFRP/Ti-6Al-4V Joint

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