Pressurized hybrid composite pipe structures, produced by filament wound subjected to impact loads, were numerically investigated. A combined 3D-FE Model based on the use of interlaminar and intralaminar damage models is established. Intralaminar damages such as matrix cracking fibre failures are predicted using 3D Hashin criteria, whereas (delamination) was evaluated cohesive zone elements. Th...

Impact resistance and damage tolerance after impact are important performance reference indices in the structural design of composite stiffened panels. The evolution failure mechanism panels with foam-filled hat-stiffeners under low-velocity compression (CAI) at different positions energies were studied by experimental numerical simulation methods. delamination caused was captured ultrasonic ph...

This study aims to assess the delamination effect and predict evolution of damage in 3D printed specimens investigate mechanical behavior occurring due layers thermoplastic polymers. Thus, additively manufactured ABS samples are subjected tensile tests Made for different thicknesses by subtracting layer layer. The adherence between studied this paper. deposition is modeled as a laminated materi...

Epoxy impregnated superconducting coils have better structural integrity and thermal stability. However, for REBa2Cu3O7−δ (REBCO, RE=Rare earth) coils, the mismatch of expansion coefficients between epoxy REBCO tapes is a serious problem. In this work, temperature distribution, stress evolution during cooling process, critical current delamination sites inside using Stycast 2850FT been studied....

• High-speed imaging and DIC are used to track damage progression during impact test A proposed 3D FE model allows predicting the behavior of laminate composites [0/90] 3s laminates failed due fiber breakage at high compression impacted region [±45] exhibited matrix cracking delamination caused by tension The aim this paper is describe dynamic biaxial glass reinforced under low velocity through...

bstract Solid lubricating coatings comprise a large segment of tribological materials and under a spherical contact the coating/substrate interface xperiences cyclic shear stress that leads to delamination of the coatings from the substrate and premature failure. The polymeric solid lubricating oating used in this study is an expanded PTFE/epoxy composite. The coatings experience cumulative dam...

When a piezoelectric film is glued on the surface of a structure member subjected to mechanical load, a distribution of electric potential is induced. In the existence of defects in the member, a characteristic variation of electric potential is observed. Based on this phenomenon, the passive electric potential CT (computed tomography) method is developed for detecting and identifying defects i...

Composite laminates are prone to delamination. Implementation of delamination in the Carrera Unified Formulation frame work using nine noded quadrilateral MITC9 element is discussed in this article. MITC9 element is devoid of shear locking and membrane locking. Delaminated as well as healthy structure is analysed for free mode vibration. The results from the present work are compared with the a...

Delamination is one of the most common defects in laminate composite materials. To detect delaminations, different non-destructive test methods such as infrared thermography methods are currently widespread for non-destructive inspection, recommended for evaluating composite materials mostly in the active variant. The principle behind infrared thermography consists in highlighting the relevant ...

Fiber-reinforced polymeric composites are used widely due to their unique properties of light weight, stiffness and high strength weight ratio. During processing and servicing, the composite materials undergoes delamination, and petalling. Computational model was constructed for finite element modeling to reflect material purpose under impact load and relevant material properties were taken. In...