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Mapa Wiedzy

100%

Sawicki M.

tom R.18, nr 8

24--27

Mapa Wiedzy. Główne bloki programu

100%

Sawicki M.

Builder

2014

tom R.18, nr 9

30--33

Drony w ocenie stanu rusztowań

51%

Nowobilski T. , Sawicki M. , Szóstak M.

tom R.24, nr 1

40--41

W artykule przedstawiono możliwości wykorzystania bezzałogowych statków powietrznych do oceny stanu technicznego rusztowań budowlanych. Analizie poddano rusztowanie budowlane nowo budowanego obiektu wielorodzinnego o powierzchni ok. 1500 m2. W wyniku wykorzystania bezzałogowego statku powietrznego i przeprowadzonej analizy zidentyfikowano newralgiczne elementy konstrukcji rusztowań, takie jak: połączenia, stężenia, miejsca zakotwień i inne. Dodatkowo w artykule wskazano najważniejsze korzyści oraz ograniczenia wynikające z zastosowania bezzałogowych statków powietrznych jako narzędzia wspomagającego kontrolę rusztowania w odniesieniu do badań tradycyjnych.

The article presents the possibilities of using unmanned aerial vehicles to assess the technical condition of building scaffoldings. The construction scaffolding of a newly constructed multi-family building with an area of approximately 1500 m2 was analyzed. As a result of the use of unmanned aircraft and the conducted analysis critical elements of the scaffolding structure were identified: connections, bracing, anchorages and others. In addition, the article indicates the most important benefits and limitations resulting from the use of unmanned aerial vehicles as a tool supporting scaffolding control in relation to traditional metods.

Experimental and computational approach to human brain modelling – aHEAD

26%

Ptak M. , Dymek M. , Sawicki M. , Fernandes F. A. O. , Wnuk M. , Wilhelm J. , Ratajczak M. , Witkowska D. , Kwiatkowski A. , Poźniak B. , Kubicki K. , Tikhomirov M. , Druszcz A. , Chybowski L.

tom Vol. 23, no. 3

art. no. e218, 2023

The human head is a highly complex structure, with a combination of hard and soft tissues and a variety of materials and interactions. Many researchers have used computational approaches to model the head, and several human finite element head models can be found in the literature. However, most of them are not geometrically accurate – for instance, the brain is simplified to a smooth spherical volume, which poses some concerns regarding boundary conditions and geometrical accuracy. Therefore, an advanced head model of a 28-year-old, designated as aHEAD 28 yo (aHEAD: advanced Head models for safety Enhancement And medical Development), has been developed. The model consists entirely of hexahedral elements for 3D structures of the head such as the cerebellum, skull and cerebrum, with detailed geometry of the gyri and sulci. Additionally, it is one of the first human head approaches published in the literature that includes cerebrospinal fluid simulated by Smoothed Particle Hydrodynamics (SPH) and a detailed model of pressurized bridging veins. To support the model’s credibility, this study is focused on physical material testing. A novel comprehensive experimental-computational approach is presented, which involves the brain tissue’s response to induced vibrations. The experiment successfully aimed to validate the material models used in the numerical analysis. Additionally, the authors present a kinematical model validation based on the Hardy experimental cadaver test. The developed model, along with its verification, aims to establish a further benchmark in finite element head modelling and can potentially provide new insights into injury mechanisms.