Energy dissipation in adhesive and bolted pultruded GFRP double-lap joints under cyclic loading

Eslami, Ghazaleh; Yanes-Armas, Sonia; Keller, Thomas

doi:10.1016/j.compstruct.2020.112496

Cited by 12 publications

(2 citation statements)

References 16 publications

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“…The enhanced ratcheting during the reversed loading was attributed to kinematic hardening. Eslami et al (Eslami, Yanes-Armas, and Keller 2020) analyzed the load-displacement behavior and energy dissipation of a flexible adhesive by a series of monotonic and reversed cyclic tests on doublelap joints. At low and medium load rates, more damage was accumulated under cyclic load than monotonic load.…”

Section: Introductionmentioning

confidence: 99%

A viscoelastic–viscoplastic model for adhesives subjected to reversed cyclic load

Chen

Smith

2023

Mech Time-Depend Mater

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This study aims to describe a toughened adhesive’s ratcheting–recovery behavior under reversed cyclic load using a viscoelastic–viscoplastic model. As most adhesives are based on synthetic polymers, their tensile and compression response can be different. A series of load–Sunload tests were conducted on bulk adhesives and bonded joints involving tension/compression–shear loads to characterize the initial yield surface. The effect of hydrostatic stress was studied by considering the instantaneous response and yield strength under tensile and compression loads. Given the observed modulus degradation and extensive permanent strain during reversed cyclic tests, time-dependent damage factors were considered for both viscoelastic and viscoplastic responses. The model was implemented in a finite element (FE) code and used to model the shear response to reversed cyclic load with varying frequency. Good agreement between the model and experiment was obtained. The consideration of both hydrostatic stress and damage was required to describe the observed adhesive reversed cyclic response.

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Section: Introductionmentioning

confidence: 99%

A viscoelastic–viscoplastic model for adhesives subjected to reversed cyclic load

Chen

Smith

2023

Mech Time-Depend Mater

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“…Composite joints are usually the weak link parts in structures. [ 18–20 ] Therefore, early warning of damage in the joints is of great significance for avoiding their catastrophic failure (i.e., net tension, shear out or cleavage). Damage identification is an effective method for damage prediction, which can supply guidance for subsequent damage repair and further ensure the structural integrity of composite joints.…”

Section: Introductionmentioning

confidence: 99%

In‐situ monitoring of glass fiber/epoxy composites by the embedded multi‐walled carbon nanotube coated glass fiber sensor: From fabrication to application

Wan

Yang

et al. 2022

Polymer Composites

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Monitoring the curing defects as well as damages that occur in the fabrication and application process is important for ensuring the safety of composite structures. In this paper, a highly sensitive 1-D line sensor is designed to achieve self-sensing and diagnosing functionalities in both the fabrication and application of glass fiber reinforced epoxy (GF/epoxy) composites. The sensor consists of multi-walled carbon nanotube coated glass fiber (MWCNT@GF), which is sensing the damage by the principle of resistance change. Due to the vacuumassisted resin infusion process, the MWCNT@GF sensor is embedded into GF/epoxy composite laminates, and hence, it can monitor the resin frontal flow, curing, and especially the flow defects. In the subsequent application, the tensile performance of a GF/epoxy composite joint is evaluated by not only the force-displacement curve but also the displacement-dependent resistance change of the sensor. Tensile damage modes are distinguished, which is for the first time to be reported. The MWCNT@GF sensor is mechanically stable and highly sensitive; hence, it can be used to follow the composite performance from fabrication until the end of life.

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Approaches for the Statistical Assessment on Structural Joints of Pultruded Fiber-Reinforced Polymer Profiles Using Trend Analysis

Perumal

Narayanan²

2022

Iran J Sci Technol Trans Civ Eng

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Energy dissipation in adhesive and bolted pultruded GFRP double-lap joints under cyclic loading

Cited by 12 publications

References 16 publications

A viscoelastic–viscoplastic model for adhesives subjected to reversed cyclic load

A viscoelastic–viscoplastic model for adhesives subjected to reversed cyclic load

In‐situ monitoring of glass fiber/epoxy composites by the embedded multi‐walled carbon nanotube coated glass fiber sensor: From fabrication to application

Approaches for the Statistical Assessment on Structural Joints of Pultruded Fiber-Reinforced Polymer Profiles Using Trend Analysis

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