Novel thermomechanical characterization for shrinkage evolution of unidirectional semi-crystalline thermoplastic prepregs (PPS/CF) in melt, rubbery and glassy states

Golzar, Mohammad; Sinke, J.; Abouhamzeh, M.

doi:10.1016/j.compositesa.2022.106879

Cited by 6 publications

(1 citation statement)

References 39 publications

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“…Fiber-reinforced polymer materials have broad application prospects in engineering. In the aerospace field [1][2][3][4][5], components such as aircraft engine turbine blades and tail wings require materials with sufficient shear strength to ensure the stability and maneuverability of the aircraft. There are generally three methods for testing the in-plane shear strength of materials: the torsion method; the tensile method such as ±45 • tensile test; and the shear method such as the track shear test or V-shaped open-track shear test [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

A Study on Damage of T800 Carbon Fiber/Epoxy Composites under In-Plane Shear Using Acoustic Emission and Digital Image Correlation

Lin,

Shi,

Huang

et al. 2023

Polymers

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In addition to measuring the strain, stress, and Young’s modulus of materials through tension and compression, in-plane shear modulus measurement is also an important part of parameter testing of composites. Tensile testing of ±45° composite laminates is an economical and effective method for measuring in-plane shear strength. In this paper, the in-plane shear modulus of T800 carbon fiber/epoxy composites were measured through tensile tests of ±45° composite laminates, and acoustic emission (AE) was used to characterize the damage of laminates under in-plane shear loading. Factor analysis (FA) on acoustic emission parameters was performed and the reconstructed factor scores were clustered to obtain three damage patterns. Finally, the development and evolution of the three damage patterns were characterized based on the cumulative hits of acoustic emission. The maximum bearing capacity of the laminated plate is about 17.54 kN, and the average in-plane shear modulus is 5.42 GPa. The damage modes of laminates under in-plane shear behavior were divided into three types: matrix cracking, delamination and fiber/matrix interface debonding, and fiber fracture. The characteristic parameter analysis of AE showed that the damage energy under in-plane shear is relatively low, mostly below 2000 mV × ms, and the frequency is dispersed between 150–350 kHz.

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