Fundamental Material Characteristics of Traditional Windows Components as an Input for the Resilience Increasing

Abstract The aim of the paper is to make an overview of standard windows system used in Slovak Republic. The investigation of the most common traditional wooden window is presented in this paper as a representative sample. These parts of building facades are the most vulnerable areas due to dynamic impact loads. Identification of the basic materials behavior is necessary for effective design of window system resilience. This research is divided to analysis of mechanical properties of components, their connections and boundary conditions. Research in this specific area helps to improve safety against unexpected extreme dynamic load such as explosions and shock impacts.

Download Full-text

Sustainable activities in manufacturing enterprises: Consumers’ expectations

Upravlenets ◽

10.29141/2218-5003-2021-12-1-7 ◽

2021 ◽

Vol 12 (1) ◽

pp. 91-101

Author(s):

Patrícia Jánošová

Keyword(s):

Slovak Republic ◽

Specific Area ◽

Environmental Indicators ◽

Market Demand ◽

Bottom Line ◽

Manufacturing Enterprises ◽

Survey Results ◽

Materials Used

Generating profit is one of the primary reasons behind the establishment and functioning of any enterprise that predetermines its behavior, inter alia, in the context of sustainability. Manufacturing enterprises are a specific area in terms of sustainability, as they have a great impact on social and environmental indicators. The paper analyses the issues of sustainable production in the Slovak Republic. The methodological basis of the study is the triple-bottom line concept. The methods used in the paper are analysis, synthesis and comparison. Within the framework of the research, the author has conducted two surveys in the form of open-ended questions. The first part is dedicated to consumers’ evaluation of the production activity of manufacturing enterprises. Consumers as stakeholders of an enterprise have a significant influence on its activities due to the fact that they create market demand. The survey results show that the main methods for stimulating consumers’ sustainable behaviour are the use of compostable packaging and abandoning chemical sprays. The second part is an overview of barriers and problems at enterprises that prevent consumers in the Slovak Republic from transitioning to a sustainable lifestyle. Among them are excessive plastic packaging and high prices for eco-products. The presented activities determine the direction for managers how to lead enterprises to sustainability in the market. The most significant findings from the surveys point to the excessive and reckless use of plastic by manufacturing enterprises. Consumers demand that managers make rational decisions about the origin, quantity and quality of materials used in production, including the long-term consequences and environmental impact of materials.

Download Full-text

Modelling heterogeneous coal-rock (HCR) failure patterns under dynamic impact loads using image-based finite element (FE) and discrete element (DE) model

Powder Technology ◽

10.1016/j.powtec.2019.10.036 ◽

2020 ◽

Vol 360 ◽

pp. 673-682 ◽

Cited By ~ 2

Author(s):

Kehong Zheng ◽

Bingjing Qiu ◽

Zhenyu Wang ◽

Jianping Li ◽

Kuidong Gao

Keyword(s):

Finite Element ◽

Discrete Element ◽

Impact Loads ◽

Dynamic Impact ◽

Failure Patterns ◽

Coal Rock

Download Full-text

Transducer Qualification for Wave Impact Load Measurements Using Wedge Drop Tests

Volume 7: Ocean Engineering ◽

10.1115/omae2015-41299 ◽

2015 ◽

Author(s):

Zhenjia (Jerry) Huang ◽

Robert Oberlies ◽

Don Spencer ◽

Jang Kim

Keyword(s):

Impact Load ◽

Research Work ◽

Offshore Structures ◽

Model Tests ◽

Impact Loads ◽

Dynamic Impact ◽

Wave Impact ◽

Impact Forces ◽

Industry Practice ◽

Drop Tests

For the design of offshore structures in harsh wave environments, it is essential to accurately determine the wave impact loads on the structure. To date, robust numerical prediction methods / algorithms for determining wave impact forces on offshore structures do not exist. Model testing continues to be the industry practice for determining wave impact forces on offshore structures. Accurate measurements of wave impact loads in model tests have been challenging for several decades. Transducers require the ability to capture the short duration, dynamic nature and high magnitude of impact loads. In order to qualify transducers for these types of measurements, we need to develop a way to physically impose dynamic impact loads on the transducers and to establish benchmark values that can be used to check the effectiveness of their measurements. In this paper, we present our recent research work on transducer qualification for wave impact load measurements, including their development, numerical analysis and wedge drop model tests. Our findings show that wedge drop tests can be used to impose dynamic impact loads for transducer qualification, and that the Wagner solution and / or validated computational fluid dynamics (CFD) simulations that include the effects of viscosity, compressibility and hydroelasticity can provide the appropriate benchmarking values. Numerical simulation results, model test measurements and findings on transducer qualification are presented and discussed in the paper.

Download Full-text

Image-based numerical study of three-dimensional meso-structure effects on damage and failure of heterogeneous coal-rock under dynamic impact loads

Particuology ◽

10.1016/j.partic.2019.09.008 ◽

2020 ◽

Vol 51 ◽

pp. 132-141

Author(s):

Kehong Zheng ◽

Bingjing Qiu ◽

Zhenyu Wang ◽

Xuefeng Li ◽

Jianping Li ◽

...

Keyword(s):

Numerical Study ◽

Three Dimensional ◽

Impact Loads ◽

Dynamic Impact ◽

Damage And Failure ◽

Coal Rock

Download Full-text

Overview of dynamic test methods for examining the glass window resistance

MATEC Web of Conferences ◽

10.1051/matecconf/202135200004 ◽

2021 ◽

Vol 352 ◽

pp. 00004

Author(s):

Richard Jankura ◽

Vlastimil Mach

Keyword(s):

Impact Test ◽

Dynamic Test ◽

Wind Load ◽

Test Methods ◽

Building Structures ◽

Dynamic Impact ◽

Window System ◽

Window Systems ◽

Extreme Load

In recent years, glass, and glass facades are increasingly used as part of building structures. Due to its functions, glass is used in commercial, residential, or strategic buildings, such as airports, stations, or offices. However, window system is subject to several forms of the load. This can be an extreme load in the form of an explosion, an earthquake, or other types of loads, such as their wind load, or dynamic impact. In the article, we focused on an overview of several norms, standards, and research that address the issue of resilience of window systems. The aim of the article was to identify the parameters that are examined in various tests in the standards. The investigated parameters of windows in a manual attempt at burglary, impact test, and explosion were discussed in the article.

Download Full-text

Assessment of the impact of vibrations on the track surface from impact loads

MATEC Web of Conferences ◽

10.1051/matecconf/201925201007 ◽

2019 ◽

Vol 252 ◽

pp. 01007

Author(s):

Michał Jukowski ◽

Krzysztof Śledziewski ◽

Mateusz Hypki

Keyword(s):

Railway Track ◽

Railway Vehicle ◽

Impact Loads ◽

Vibration Acceleration ◽

Dynamic Impact ◽

Limit Condition ◽

Ground Conditions ◽

Track Surface ◽

The Impact ◽

Construction Works

Dynamic development of the linear infrastructure in Poland directly contributed to the increase in the number of engineering sites and facilities. Due to ground conditions and values of exploitation loads, in some cases bridge supports must be placed on foundation piles, the method of execution of which may cause significant dynamic impact on the structures located in the close vicinity. The paper assesses the impact of dynamic actions resulting from impact loads during impact pile driving of FRANKA piles with the use of a guide pipe on the railway track surface, on which there is continuous railway vehicle traffic. The tests have shown that the serviceability limit condition has been met and that the construction works do not result in exceeded values of vibration acceleration.

Download Full-text

Assessing the thermal degradation of bonded joints in flat ceramic tiles of building facades by numerical and experimental dynamic analysis

Proceedings of the Institution of Mechanical Engineers Part L Journal of Materials Design and Applications ◽

10.1177/1464420720928569 ◽

2020 ◽

Vol 234 (8) ◽

pp. 1129-1141

Author(s):

Carla MV Lopes ◽

Luís Silva ◽

Pedro Sequeira ◽

Francisco Q de Melo

Keyword(s):

Finite Element Modelling ◽

Dissipation Factor ◽

Impact Loads ◽

Bonded Joints ◽

Mechanical Parameters ◽

Extreme Temperatures ◽

Ceramic Tiles ◽

Low Intensity ◽

Dynamic Technique ◽

Building Facades

Flat ceramic tiles are widely used as protective and aesthetic construction elements in urban building facades. Under the effect of extreme temperatures from the weather seasonality, bonded joints of these tiles undergo thermal cycle’s loads. In this work, a dynamic technique based on vibration metrology is implemented. This procedure consists in the analysis of accelerograms obtained in bonded ceramic tiles from low-intensity impact loads. A corresponding study carried out with finite element modelling allowed an accurate calibration of mechanical parameters of the tile/adhesive pair as well as the estimation of a vibration dissipation factor. Several test specimens subjected to a defined period of thermal cycles stressing were also analysed for the mentioned accelerogram and an expression for the ageing estimation of the mechanical properties of the bonded joints in the tiles was obtained.

Download Full-text