Delamination is one of the most common failure modes in composite structures. In the case of in-plane compressional loading, delamination of a layered flat structure can cause a local buckling in delaminated area which subsequently affects the overall stiffness of the initial structure. This leads to an early failure of the overall structure. Moreover, with an increase in load, the delaminated ...

The buckling and postbuckling behaviors of a composite beam with single delamination are investigated. A three-dimensional finite element model using the commercial code ANSYS is employed for this purpose. The finite elements analyses have been performed using a linear buckling model based on the solution of the eigenvalues problem, and a non-linear one based on an incremental-iterative method....

Compressing a thin elastic film attached to a thick compliant substrate can lead to buckling instability. Two commonly observed buckling modes, buckle-delamination and wrinkling, have each been analyzed separately in previous studies. Recent experiments have observed that the two modes can co-exist and co-evolve. In this paper, by analytical and finite element methods, we present a study on con...

Abstract The operational safety and reliability of a variable gauge train are affected by the anti-fretting wear performance locking mechanism. main purpose this study is to optimize surface treatment process for pin material under actual service conditions alleviate fretting damage. Based on two basic principles strengthening friction reduction, substrate (AISI 4135 steel) was treated laser qu...

This study provides a comprehensive analysis of the one-shot drilling (CFRP) strategy for machining CFRP materials in assembly aircraft components, focusing on key factors such as tool wear, hole delamination, and evolution forces. The research uses adapted parts tail-cone structure commercial workpieces employs large-diameter cutting tools to perform operations, with results that can be readil...

Present research aims to develop a finite element computational model examine delamination-fretting wear behaviour that can suitably mimic actual loading conditions at HAp-Ti-6Al–4V interface of uncemented hip implant femoral stem component. A simple contact configuration based on fretting fatigue experimental arrangement subjected different mechanical and tribological properties consist pad (b...

Anodizing a simple and effective method to improve the wear resistance of 6061 aluminum alloy. In this study, microstructure alloy oxide films (AAO) was adjusted by changing electrolyte temperature (5, 15, 25 °C) using 160 g/L sulfuric acid as electrolyte. The phase composition, microstructure, morphological characteristics specimens were detected X-ray diffractometer field emission scanning el...

In this study, the sliding wear of a DIN 18MnCrSiMo6-4 continuous cooling bainitic steel plasma nitrided with nitrogen rich gas composition was investigated. To evaluate influence processing time and temperature on mechanical microstructural characteristics layer, samples were at 400, 450, 500 550 °C for 3, 6 9 h. The produced layers characterized concerning microstructure, phase composition, m...

We consider the buckle-driven delamination of compressed thin lms. For a wide class of patterns of delamination, it is shown that the loading on the delamination front progressively goes from mode I to mode II during growth of the blister. As a result, the mode dependence of the lm/substrate interface excludes widespread delamination. This explains the observations of blisters of nite extent, w...