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Parameters Optimization for Manufacturing Advanced Self-Reinforced Composites based on Ultra-High Molecular Weight Polyethylene

Eugene Statnik, Dmitry D. Zherebtsov, Dilus I. Chukov, Ilya I. Larin, Alnis A. Veveris, Valerii G. Torokhov, Alexander S. Kechekyan, Kristina Z. Myagkova, Iuliia A. Sadykova, Alexey I. Salimon, Alexander M. Korsunsky, Semen D. Ignatyev, Kamal M. Hammad, Sergey D. Kaloshkin

In this study, the relationships between processing, structure and properties of self-reinforced ultra-high molecular weight polyethylene (UHMWPE) composites fabricated via thermal pressing are investigated. By systematically varying…

Improvement of crack tip position estimation in DIC images by image processing methods

Najat Zekriti, Fatima Majid, Hachimi Taoufik, Yassine Tounsi, Rajaa Rhanim, Ibrahim Mrani, Hassan Rhanim

The study presents and compares an application of two procedures to identify the crack tip location in PVC Sent samples under a uniaxial tensile test based on the image processing method. An IDS camera captures several photos of the PVC…

Mathematical data processing according to digital image correlation method for polymer composites

Dmitriy Lobanov, Elena Strungar

The paper analyses the numerical algorithms for experimental data processing using a contactless video system Vic-3D, designed for three-dimension analysis of displacement and strain fields, and digital image correlation method. The…

Defect detection of wire rope for oil well based on adaptive angle

Zhang Jijun, Meng Xiangqing

This paper uses a digital image processing method which is based on texture feature of steel cable to detect the fracture of steel wire. At first, it uses a modified homomorphic filtering method to eliminate environment heterogeneous…

Study of short cracks under biaxial fatigue

P. Lopez-Crespo, B. Moreno, A. Garcia-Gonzalez, J. Zapatero, A. Lopez-Moreno

In this paper a methodology for evaluating crack initiation under biaxial conditions is presented. The methodology consists of evaluating the crack length automatically with digital processing of highmagnification images of the crack. The…

Mechanical characterization and crack propagation in Additively Manufactured Polymers using Digital Image Correlation: a review

Taoufik Hachimi, Najat Zekriti, Fouad Ait Hmazi, Hamza Bagar, Hatim El Assad, Nassima Naboulsi

While Additive Manufacturing (AM) of polymers has matured from rapid prototyping to functional production, the layer-wise fabrication process introduces significant mechanical anisotropy and microstructural heterogeneity, which complicates…

A digital twin framework with MobileNetV2 for damage detection in slab structures

Huong Duong Nguyen, Huan Nguyen, Xiaohong Gao

In this study, a digital twin framework is proposed for damage detection in a civil structure, which consists of a finite element model, neural networks, model updating methods, and signal processing. To verify the proposed framework, we…

The earth-fill dam state express investigation using mechanical vibrations produced by HPP

Galina Antonovskaya, Natalia Kapustyan

The usage of mechanical vibrations produced by the hydropower plant (HPP) turbine may be used for seismic sounding of large-scale constructions as the earth-fill dam and its abutment contacts. Such vibrations are monochromatic oscillations…

Investigation via morphological analysis of aluminium foams produced by replication casting

A. Boschetto, L. Bottini, F. Campana, L. Consorti, D. Pilone

Foams and porous materials with cellular structure have many interesting combinations of physical and mechanical properties coupled with low specific weight. By means of replication casting it is possible to manufacture foams from molten…

Using the wavelet transform to process data from experimental studies of the discontinuous plastic deformation effect

Evgeniia Chechulina, Peter Trusov

Vast number of theoretical and experimental works has been devoted to the study of discontinuous plastic deformation (the Portevin-Le Chatelier effect), which manifests itself for most widely used alloys in certain ranges of both…

Nonlinearity of mechanical behavior of 3D-reinforced composites under compression

Stanislav Slovikov, Andrey Babushkin, Maria Gusina

Modern technological capabilities make it possible to produce 3D spatially-reinforced for polymer composite materials. The tasks of experimental research and analysis of the deformation process of new composite materials for aviation…

High-quality nodule analysis in spheroidal graphite cast iron using X-ray micro-computed tomography

This work is a continuation of the studies presented in a recent paper by the authors, where a methodology to obtain different nodule quality categories in spheroidal graphite cast iron, was proposed. In this study, an exhaustive analysis…