Comparative Tests of Shear Strength of Adhesive Lap Joints after Thermal Shocks

Kłonica, Mariusz; Bielawski, Radosław; Żokowski, Mariusz

doi:10.12913/22998624/143270

Cited by 4 publications

(4 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These composite structures will differ based on the type of material used in each layer, the number of layers, and the angular orientation of the fibers in the matrix (Figure 1). The experiments conducted will aim to determine the basic mechanical properties [8][9][10] such as Young's modulus and density, as well as the impact of temperature on these properties. In parallel with the design and fabrication of the specimens, a test rig for evaluating the new structures was developed.…”

Section: Introductionmentioning

confidence: 99%

“…These phase transformations are accompanied by changes in the material's structure: austenite, a hightemperature phase, has a cubic crystal structure, whereas martensite, a low-temperature phase, features an oblique or twinned structure. These transformations are initiated when specific limiting temperatures, well documented in the literature and depicted in Figure 2 [12], are surpassed: The experiments conducted will aim to determine the basic mechanical properties [8][9][10] such as Young's modulus and density, as well as the impact of temperature on these properties. In parallel with the design and fabrication of the specimens, a test rig for evaluating the new structures was developed.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The Influence of Variable Stiffness of the Shape Memory Alloys Carbon Composite Structure on Mechanical Vibration

Markuszewski,

Wądołowski,

Krajewski

2024

Materials

View full text Add to dashboard Cite

The purpose of this study is to investigate the dynamic properties of new structures formed by combining carbon fiber and epoxy resin-based composite materials with SMA (shape memory alloy) “smart materials” in the form of NiTiNol wire. Such a combination will have an impact on the dynamics of the structure, especially in terms of stiffness controllability. Key mechanical parameters such as natural frequency and stiffness, as well as the effect of temperature, were determined through experimental studies.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Influence of Variable Stiffness of the Shape Memory Alloys Carbon Composite Structure on Mechanical Vibration

Markuszewski,

Wądołowski,

Krajewski

2024

Materials

View full text Add to dashboard Cite

show abstract

“…Detection and monitoring of wildlife is an extraordinarily complex activity, requiring the adoption of an appropriate methodology, which determines the selection of suitable measurement devices (Kłonica et al , 2021). The selection of a methodology should primarily take into account the purpose of the observation (determination of population size, behavioural cognition and determination of health status), the population size, the animal species and its characteristics, such as size or colouration.…”

Section: Introductionmentioning

confidence: 99%

Case study of detection and monitoring of wildlife by UAVs equipped with RGB camera and TIR camera

Perz,

Wronowski,

Domanski

et al. 2023

AEAT

View full text Add to dashboard Cite

Purpose Observation of the animal world is an important component of nature surveys. It provides a number of different information concerning aspects such as population sizes, migration directions, feeding sites and many other data. The paper below presents the results from the flights of an unmanned aerial vehicle (UAV) aimed at detecting animals in their natural environment. Design/methodology/approach The drone used in the research was equipped with RGB and thermal infrared (TIR) cameras. Both cameras, which were mounted on the UAV, were used to take pictures showing the concentration of animals (deer). The overview flights were carried out in the villages of Podlaskie Voivodeship: Szerokie Laki, Bialousy and Sloja. Research flights were made in Bialousy and Sloja. A concentration of deer was photographed during research flights in Sloja. A Durango unmanned platform, equipped with a thermal imaging camera and a Canon RGB camera, was used for research flights. The pictures taken during the flights were used to create orthomaps. A multicopter, equipped with a GoPro camera, was used for overview flights to film the flight locations. A flight control station was also used, consisting of a laptop with MissionPlanner software. Findings Analysis of the collected images has indicated that environmental, organisational and technical factors influence the quality of the information. Sophisticated observation precision is ensured by the use of high-resolution RGB and TIR cameras. A proper platform for the cameras is an UAV provided with advanced positioning systems, which makes it possible to create high-quality orthomaps of the area. When observing animals, the time of day (temperature contrast), year season (leaf ascent) or flight parameters is important. Originality/value The paper introduces the conclusions of the research flights, pointing out useful information for animal observation using UAVs.

show abstract

“…Aluminum bonding technology in aircraft is an area of continuous research and development [1][2][3][4]. Further solutions are being sought to ensure increased strength, stiffness, and durability of adhesive joints [5][6][7]. Technologies for proper surface preparation used for joining attract a lot of attention [8], especially those with adhesion promoters used to repair damaged aircraft areas [9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Durability and Corrosion Resistance Test of Adhesive Joints Using Two Adherence Promoters for the Connection of Aerospace Aluminum Alloys

et al. 2022

View full text Add to dashboard Cite

This article presents the technology of making an adhesive joint using two primers: Corrosion Inhibiting Primer BR127 (previously used, containing chromium compounds) and, as a potential substitute, Structural Adhesives Primer EW 5000 AS (which does not contain any compounds harmful to the environment). An adhesive film and a sol–gel primer were used to make the joint of two aluminum sheets, and various technologies were used for applying adhesion promoters. The mechanical properties of the prepared samples were tested using two test methods: wedge tests and shear strength tests. In both cases, the samples were aged in laboratory conditions in tap water, and in a climatic chamber (with increased temperature and humidity). The obtained results indicate that the best technology for preparing the joint using each primer is the technology that assumes heating the primer and hardening the adhesive film in one operation. The results of the strength tests indicate that the samples made using the EW 5000 AS primer have higher strength properties under all tested seasoning conditions compared to samples made using the BR 127 primer. It was also confirmed that the presence of moisture and/or water reduces the mechanical strength of the adhesive joints independently of the primer used. The results of the polymer coatings tests to protect the aluminum substrate against corrosion showed that the coatings are only effective for a certain period of time, and, as a result of the NSS test, after 480 h, all the samples were subject to corrosion.

show abstract

Comparative Tests of Shear Strength of Adhesive Lap Joints after Thermal Shocks

Cited by 4 publications

References 9 publications

The Influence of Variable Stiffness of the Shape Memory Alloys Carbon Composite Structure on Mechanical Vibration

The Influence of Variable Stiffness of the Shape Memory Alloys Carbon Composite Structure on Mechanical Vibration

Case study of detection and monitoring of wildlife by UAVs equipped with RGB camera and TIR camera

Durability and Corrosion Resistance Test of Adhesive Joints Using Two Adherence Promoters for the Connection of Aerospace Aluminum Alloys

Contact Info

Product

Resources

About