Krzysztof Wilde
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View article: Experimental evaluation and constitutive modelling of cervical spine ligaments under low and high strain rates
Experimental evaluation and constitutive modelling of cervical spine ligaments under low and high strain rates Open
In the paper the mechanical behavior under low (0.5 s⁻¹) and high-strain rate (50 s⁻¹) of four human cervical spine ligaments, anterior longitudinal ligament (ALL), posterior longitudinal ligament (PLL), ligamentum flava (LF), and capsular…
View article: Characterization of Corrosion-Induced Fracture in Reinforced Concrete Beams Using Electrical Potential, Ultrasound and Low-Frequency Vibration
Characterization of Corrosion-Induced Fracture in Reinforced Concrete Beams Using Electrical Potential, Ultrasound and Low-Frequency Vibration Open
The paper deals with the non-destructive experimental testing of the reinforced concrete beams under progressive corrosion. A series of experiments using electrical potential, ultrasound and low-frequency vibrations techniques are reported…
View article: Numerical Analysis of Mice Carotid Arteries’ Response Emphasizing the Importance of Material Law Constants’ Validation
Numerical Analysis of Mice Carotid Arteries’ Response Emphasizing the Importance of Material Law Constants’ Validation Open
In this paper, a detailed validation of the passive material properties of mice carotid arteries and constants of the Fung and Holzapfel hyperelastic material laws is conducted by means of static nonlinear FEM analyses. The response of the…
View article: Forgotten and suffering structures - detailed inspection and finite element analysis of two railroad masonry arches in Poland
Forgotten and suffering structures - detailed inspection and finite element analysis of two railroad masonry arches in Poland Open
The problems of structural response and load capacity estimation of two existing masonry arch railroad bridges located in Szczecin in Poland are described in this paper.The main properties and results of detailed inspection of the structur…
View article: First large capsule implosions in a frustum-shaped hohlraum
First large capsule implosions in a frustum-shaped hohlraum Open
We report on the first indirect-drive implosions driven by a dual conical frustum-shaped hohlraum denoted “frustraum” and the experimental tuning campaigns leading up to two layered implosions. The campaign utilized 1.2 mm and 1.4 mm inner…
View article: Finite element modeling of plastic hinges based on ductility demand‐capacity method using nonlinear material for dynamic analysis
Finite element modeling of plastic hinges based on ductility demand‐capacity method using nonlinear material for dynamic analysis Open
The article discusses modeling plastic hinges in reinforced concrete intermediate supports using finite elements methods. The ductility demand‐capacity method was used to determine the geometrical parameters of cross‐section plasticization…
View article: FEM and experimental investigations of concrete temperature field in the massive stemwall of the bridge abutment
FEM and experimental investigations of concrete temperature field in the massive stemwall of the bridge abutment Open
The paper deals with the prediction of early-age concrete temperature of cast-in-place stemwall of the bridge abutment. The considered object is an arch bridge located in Gdańsk. In the case of massive structures, it is particularly import…
View article: Influence of a Lighting Column in the Working Width of a W-Beam Barrier on TB51 Crash Test
Influence of a Lighting Column in the Working Width of a W-Beam Barrier on TB51 Crash Test Open
Road equipment, such as, e.g., road safety barriers and lighting columns, are subject to certification according to the EN1317 standard to be allowed for use on European roads. In engineering practice, due to the terrain conditions, there …
View article: On analysis of double-impact test of 1500-kg vehicle into w-beam guardrail system
On analysis of double-impact test of 1500-kg vehicle into w-beam guardrail system Open
Every day on roads many scenarios of accidents may occur. One of the measures to minimize their consequences is road safety barriers. Finite Element analyses are being increasingly used to support the physical testing of these devices. The…
View article: The role of numerical tests in assessing road restraint system functionality
The role of numerical tests in assessing road restraint system functionality Open
Key to understanding the needs and building road infrastructure management tools to prevent and mitigate run-off-road accidents is to identify hazards and their sources which are a result of wrong design, construction, and installation of …
View article: Prediction of cast-in-place concrete strength of the extradosed bridge deck based on temperature monitoring and numerical simulations
Prediction of cast-in-place concrete strength of the extradosed bridge deck based on temperature monitoring and numerical simulations Open
The work is devoted to the implementation of a monitoring system for high performance concrete embedded in the span of an extradosed bridge deck using a modified maturity method augmented by numerical simulations conducted by the authors' …
View article: Innovative Research Into Road Restraint Systems
Innovative Research Into Road Restraint Systems Open
Key to understanding the needs and building road infrastructure management tools to prevent and mitigate run-off-road accidents is to identify hazards and their sources which are a result of wrong design, construction, installation and mai…
View article: Non-Destructive Testing of a Sport Tribune under Synchronized Crowd-Induced Excitation Using Vibration Analysis
Non-Destructive Testing of a Sport Tribune under Synchronized Crowd-Induced Excitation Using Vibration Analysis Open
This paper presents the concept of repairing the stand of a motorbike speedway stadium. The synchronized dancing of fans cheering during a meeting brought the stand into excessive resonance. The main goal of this research was to propose a …
View article: The effects of vehicle restraint systems on road safety
The effects of vehicle restraint systems on road safety Open
Key to understanding the needs and tools of road infrastructure management for preventing runoff-road crashes or minimising their consequences, is to identify the hazards and sources of hazards caused by wrong or improper use of road safet…
View article: Maturity curve for estimating the in-place strength of high performance concrete
Maturity curve for estimating the in-place strength of high performance concrete Open
The paper presents the maturity curve for estimating the in-place early-age compressive strength of concrete. The development of appropriate maturity curve is a complex process. It is important to correctly determine the datum temperature …
View article: Estimation of wind pressure acting on the new palm house in Gdansk
Estimation of wind pressure acting on the new palm house in Gdansk Open
This paper deals with the problem of numerical simulations of wind loads acting on a Palm House with complex geometry. Flow simulations with aid of computational fluid dynamics procedures have been performed to check if the pressure distri…
View article: On estimation of occupant safety in vehicular crashes into roadside obstacles using non-linear dynamic analysis
On estimation of occupant safety in vehicular crashes into roadside obstacles using non-linear dynamic analysis Open
The article describes a comparison of two general methods of occupants safety estimation based on a numerical examples. The so-called direct method is mainly based on the HIC (Head Injury Criterion) of a crash test dummy in a vehicle with …
View article: Improvement of the load capacity of the road overpass as a result of repairs after breakage caused by vehicle impacts
Improvement of the load capacity of the road overpass as a result of repairs after breakage caused by vehicle impacts Open
Damages of spans of the overpass caused by impact of underpassing vehicles are relatively frequent. Objects that use prefabricated load-bearing elements that are not designed for such impacts are particularly exposed. After impact, such st…
View article: The application of non-destructive methods in the diagnostics of the approach pavement at the bridges
The application of non-destructive methods in the diagnostics of the approach pavement at the bridges Open
The article presents the possibility of using non-destructive methods of road pavement diagnostics as an alternative to traditional means to assess the reasons for premature cracks adjacent to bridge objects. Two scanning methods were used…
View article: Studying road restraint systems to develop new guidelines
Studying road restraint systems to develop new guidelines Open
Key to understanding the needs and tools of road infrastructure management for preventing run-off-road crashes or minimising their consequences, is to identify the hazards and sources of hazards caused by wrong or improper use of road safe…
View article: On the influence of the acceleration recording time on the calculation of impact severity indexes
On the influence of the acceleration recording time on the calculation of impact severity indexes Open
The paper concerns with the analysis of normative requirements pertaining to experimental setup of a crash test and its numerical modelling. An overview of parameters describing the collision of a vehicle with a road restraining system is …
View article: The influence of position of the post or its absence on the performance of the cable barrier system
The influence of position of the post or its absence on the performance of the cable barrier system Open
Road safety barriers are used to increase safety in potentially dangerous places on the roads. They are designed and installed on the roads to prevent any vehicle from getting outside the travelled way or from entering the opposite lane of…
View article: Numerical simulation of the influence of the selected factors on the performance of a concrete road barrier H2/W5/B
Numerical simulation of the influence of the selected factors on the performance of a concrete road barrier H2/W5/B Open
This paper discuss the influence of selected factors on the performance of a concrete road barrier H2/W5/B. Modelling techniques of a concrete road safety system were briefly discussed. Comparison to the full scale crash test results has b…
View article: MONITORING SYSTEM OF THE ROAD EMBANKMENT
MONITORING SYSTEM OF THE ROAD EMBANKMENT Open
The paper presents the analysis of the monitoring system of the embankment supported on concrete columns and overlaid by a load transfer platform with the embedded steel grid. This field investigation was to study the complex interaction b…
View article: A novel formulation of 3D spectral element for wave propagation in reinforced concrete
A novel formulation of 3D spectral element for wave propagation in reinforced concrete Open
The paper deals with numerical simulations of wave propagation in reinforced concrete for damage detection purposes. A novel formulation of a 3D spectral element was proposed. The reinforcement modelled as the truss spectral element was em…
View article: Load Testing of GFRP Composite U-Shape Footbridge
Load Testing of GFRP Composite U-Shape Footbridge Open
The paper presents the scope of load tests carried out on an innovative shell composite footbridge. The tested footbridge was manufactured in one production cycle and has no components made from materials other than GFRP laminates and PET …
View article: Dynamic Response of Forum Gdansk Structure due to Rail Traffic
Dynamic Response of Forum Gdansk Structure due to Rail Traffic Open
This paper presents the study of the impact of vibration induced by the movement of the railway rolling stock on the Forum Gdańsk structure. This object is currently under construction and is located over the railway tracks in the vicinity…
View article: Curb-to-Barrier Face Distance Variation an a TB51 Bridge Barrier Crash Test Simulation
Curb-to-Barrier Face Distance Variation an a TB51 Bridge Barrier Crash Test Simulation Open
This paper addresses the problem of road safety regarding barrier placement as relative to the curb. A short summary of existing regulations is presented. Numerical simulations using the explicit finite element system Ls-Dyna are shown. In…
View article: Technical Monitoring System for a New Part of Gdańsk Deepwater Container Terminal
Technical Monitoring System for a New Part of Gdańsk Deepwater Container Terminal Open
Development strategy for the port of Gdańsk assumes that , up to 2027, it will become the main transport centre in the Baltic Sea region. To this end , for many years work has been carried out to facilitate access to the port both by sea a…
View article: Composite GFRP U-Shaped Footbridge
Composite GFRP U-Shaped Footbridge Open
The paper presents proposals for the use of glass fiber reinforced polymer composites for the construction of engineering objects, known and commonly used in the shipbuilding industry. An example of a pedestrian footbridge was used in this…