Fatigue crack propagation showing river marks

Surface roughness and topology

Splitting + kinked bands near a center notch in a composite under mixed mode fatigue

Arresting the splitting crack in a composite

Plastic strain field near substrate-adhesive interface with voids

Enhanced splitting resistance of polymer fiber tows due to impregnated powder

Tow-matrix debonding through the composite thickness

Fracture surface with peeled fibers and adhesive from a bonded composite 

Transverse cracks initiated by fiber-matrix debonding

Strain-localized necking and void formation in thermoplastics

Matrix debris on surface-treated fiber after pulling out

Intralaminar fracture in a composite

Deformed adhesive wave due to local stresses on metal surface

Residual stresses in front of a notch tip

Dynamic fracking in a composite under bending

Delaminated composite after impact loading

Arresting a crack propagation by a micro-scale hole

Shear bands and plastic deformation

Fiber-matrix debonding and matrix cracking in a composite under indentation

High-cycle fatigue fracture surface of a graphene nanocomposite 

Damage distribution in a 3D woven composite

Splitting crack from a notch in a composite

Plastic strain distribution in a nanocomposite

Exposed short carbon fibers on a composite surface after plasma

Merged and clustered polymer fibers in a composite due to melting

Crack deflection by graphene nanoplatelets

Interfacial voids between composite and adhesive

Nanosecond-laser-engraved surface

Melted fibers in a composite

High-cycle splitting cracks in a quasi-isotropic composite in presence of a center hole

Splitting cracks in a composite under shear

Debris of peeled composite layer due to enhanced plasma

Cross-sectional micrograph of a short-fiber-reinforced polymer

Plastic deformation in nanoplatelets-reinforced polymer composites

Hydrolysis-induced interfacial defects

Plastic deformation of adhesive on the surface with laser grooves

Damage band propagation in quasi-brittle materials

Plasma-modified oxide layer on a metal surface

Debonding between two dissimuliar polymers

Interfacial damage propagation on a rough surface

Plastic flow on roughened surface

Failure of ultrasonically-welded composite interface

Powder impregnation of fiber-reinforeced polymer composites

Sliding between two surfaces