Residual stresses in thermoplastic composites – a study of the literature. Part III: Effects of thermal residual stresses

Parlevliet, Patricia; Bersee, H.E.N.; Beukers, Adriaan

doi:10.1016/j.compositesa.2006.12.005

Cited by 213 publications

(132 citation statements)

References 143 publications

Supporting

Mentioning

126

Contrasting

Unclassified

Order By: Relevance

“…Micromechanical level -Due to mismatch between thermal expansion coefficients between fibres and the matrix Macro-mechanical level -Due to mismatch in expansion between plies of varying orientation Global level -Due to thermal gradients within the laminate as a whole arising during cooling Common defects caused by these residual stresses include microcracking and delamination [41]. Upon examination under an optical microscope a number of the laminates were found to have residual stressinduced microcracks, before any cryogenic cycling commenced.…”

Section: Post-processing Crackingmentioning

confidence: 99%

Damage characterisation of cryogenically cycled carbon fibre/PEEK laminates

Grogan

Leen

Semprimoschnig

et al. 2014

Composites Part A: Applied Science and Manufacturing

View full text Add to dashboard Cite

show abstract

Section: Post-processing Crackingmentioning

confidence: 99%

Damage characterisation of cryogenically cycled carbon fibre/PEEK laminates

Grogan

Leen

Semprimoschnig

et al. 2014

Composites Part A: Applied Science and Manufacturing

View full text Add to dashboard Cite

show abstract

“…Other than that, the large residual stresses generated in the processing of high performance thermoplastic reinforced polymer composites as discussed in [19] need to be considered. The residual stresses occurred due to gradients in cooling rate, thermal shrinkage mismatch and material density.…”

Section: Introductionmentioning

confidence: 99%

Effect of silica nanoparticles on compressive properties of an epoxy polymer

et al. 2010

View full text Add to dashboard Cite

The effect of nanosilica on compressive properties of an Epikote 828 epoxy at room temperature was studied. A 40 wt% nanosilica/epoxy masterbatch (nanopox F400) was used to prepare a series of epoxy based nanocomposites with 5-25 wt% nanosilica content. Static uniaxial compression tests were conducted on cubic and cylindrical specimens to study the compressive stress-strain response, failure mechanisms and damage characteristics of the pure and nanomodified epoxy. It was found that the compressive stiffness and strength were improved with increasing nanosilica content without significant reduction in failure strain.The presence of nanosilica improved ductility and promoted higher plastic hardening behaviour after yielding in comparison with the unmodified resin system. This result suggested that nanoparticles introduced additional mechanisms of energy absorption to enhance the compressive properties without reducing the deformation to failure.

show abstract

“…mPP, but the resulting interface is still weaker than that of the carbon fibre epoxy. It is common for a stronger interface to lead to a lower impact strength, as more energy is dissipated through fibre pull-out which results from a weak interface [30,33]. However, according to …”

Section: 1mentioning

confidence: 99%

“…This was particularly clear for fibres transverse to the loading direction. Cracks in randomly orientated fibre composites are impeded by the discontinuities, such as fibre cross-overs [29], and either propagate through the matrix or along the interface, depending on the interfacial strength [30]. When the interface is weak, these interfacial cracks propagate along the length of the fibre and lead to fibre pull-out [31].…”

Section: 1mentioning

confidence: 99%

Long discontinuous carbon fibre/polypropylene composites for high volume structural applications

Harper

Burn

Johnson

et al. 2017

Journal of Composite Materials

View full text Add to dashboard Cite

A processing route is presented to manufacture discontinuous carbon fibre reinforced polypropylene (CF.PP) composites, using much longer fibre lengths (25mm) and higher volume fractions (up to 45%) than previously reported in the literature. Carbon fibre tows are coated with different ratios of polypropylene, blended with a maleic anhydride coupling agent, to investigate the influence of the interfacial shear strength at the microscale on the macroscale composite properties. Improvements in the tensile performance at the macroscale (70% increase) are not as high as those reported for the interfacial shear strength at the microscale (300%), following the addition of the coupling agent.Consequently, the tensile strength of the CF.PP material is only 45% of values reported for carbon fibre/epoxy systems, however, the tensile stiffness is comparable. This demonstrates the potential for using CF.PP for structural applications, following further process optimisation to overcome the current high levels of porosity (3.3% at 0.45Vf) to improve the tensile strength.

show abstract

Residual stresses in thermoplastic composites – a study of the literature. Part III: Effects of thermal residual stresses

Cited by 213 publications

References 143 publications

Damage characterisation of cryogenically cycled carbon fibre/PEEK laminates

Damage characterisation of cryogenically cycled carbon fibre/PEEK laminates

Effect of silica nanoparticles on compressive properties of an epoxy polymer

Long discontinuous carbon fibre/polypropylene composites for high volume structural applications

Contact Info

Product

Resources

About