Combined loading micromechanical analysis of a unidirectional composite

Adams, DF; Crane, David A.

doi:10.1016/0010-4361(84)90273-8

Cited by 45 publications

(12 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Young's moduli transverse to fibre direction were estimated from the transverse moduli of the composites using Halpin and Tsai's equation [9] which coincides with Maxwell's equation [10]. These results obtained closely resemble those given in the literature [11,12]. strengths of laminates ~ polymers.…”

Section: Properties Of Fibresmentioning

confidence: 74%

Matrix properties and composite failure

Fischer

Schmid

1986

Colloid & Polymer Sci

View full text Add to dashboard Cite

The influence of matrix extensibility on the properties of a composite was studied using two glassy polymers of almost identical chemical structure but differing crosslink densities. The lower crosslink density gave a 73 % increase in tensile elongation at break and a 56 % increase in specific fracture energy. Unidirectional laminates of glass, carbon, and Kevlar | fibres were prepared with these two polymers and tested for shear strength, transverse tension, and dynamic fatigue.The shear strengths of the polymers were found to be almost independent of crosslink densities (about 100 MPa). The interlaminar shear strengths of the carbon fibre laminates corresponded to those of the matrix polymers (Kevlar | fibre laminates failed at 60 %). In accordance with Griffith's equation the more extensible polymer and its laminates performed better in tensile tests transverse to the fibres due to improved fracture energy. Failure criteria based on strain magnification were useful in the case of glass fibre laminates, but proved inadequate for laminates based on anisotropic fibres such as carbon and Kevlar |The dynamic fatigue strengths of the two matrix polymers were unaffected by the difference in crosslink densities. Almost the same fatigue strengths were obtained for the matrix polymers as for the laminates (carbon, glass) transverse to the fibres. A lack of processability of the polymer with high functionality was identified as a source of deteriorating effects.

show abstract

Section: Properties Of Fibresmentioning

confidence: 74%

Matrix properties and composite failure

Fischer

Schmid

1986

Colloid & Polymer Sci

View full text Add to dashboard Cite

show abstract

“…Finite-element analysis for transverse normal loading of a unidirectional composite in the elastic state was conducted by Adams and Doner (1967), and in the inelastic state by Adams (1970). Also, a combined loading micromechanical analysis was performed by Adams and Crane (1984), and finite-element analyses for unidirectional composites under various environments have also been conducted Miller 1977, Adams 1987). The present problem was addressed by performing elastic-plastic finite-element analysis to determine the stress state around the interface.…”

Section: Micromechanical Finite-element Analysis Of Fibre-matrix Intementioning

confidence: 99%

Forming of Metal Matrix Composites

Dharan¹,

Kobayashi²

1992

Numerical Modelling of Material Deformation Processes

View full text Add to dashboard Cite

“…The plastic response of the matrix is initiated with an octahedral shear stress yield criterion, and governed by the Prandtl-Reuss flow rule which assumes that plastic strain is proportional to the deviatoric stress [22,231. Matrix octahedral shear stress-strain behavior is developed from RichardBlacklock cu-ve fits of matrix solid rod torsion data at various temperatures and moisture levels.…”

Section: Nonlinear Materials Modelmentioning

confidence: 99%

Measurement of the Out-of-Plane Shear Response of Thick Section Composite Materials Using the V-Notched Beam Specimen

Gipple

Hoyns

1994

Journal of Composite Materials

View full text Add to dashboard Cite

The out-of-plane shear response of thick, unidirectional and crossply, AS4/3501-6 and S2 glass/3501-6 laminates was investigated theoretically and experimentally using V-notched beam (Iosipescu) specimens. Strains were monitored in the specimen test sections using conventional strain gages, moiré interferometry and full section strain gages. Crossply laminates exhibited a fairly uniform strain distribution away from the notches, while the unidirectional specimens were characterized by a nonuniform distribution. Measured strains correlated very well with predicted strains from specimen finite element analyses using nonlinear elastic material properties.

show abstract

Combined loading micromechanical analysis of a unidirectional composite

Cited by 45 publications

References 14 publications

Matrix properties and composite failure

Matrix properties and composite failure

Forming of Metal Matrix Composites

Measurement of the Out-of-Plane Shear Response of Thick Section Composite Materials Using the V-Notched Beam Specimen

Contact Info

Product

Resources

About