Monitoring the fatigue crack on the test specimen during the cyclic loading

Sapieta, Milan; Šulka, Peter; Svoboda, Martin

doi:10.1051/matecconf/201815701016

Cited by 5 publications

(2 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thermal and mechanical stress during grinding affects the residual stress on the surface of the material [4]. The method of optical microscopy was used to gain knowledge about the microstructure of the material.…”

Section: Fig 1 Marking Of the Damaged Areamentioning

confidence: 99%

The Microstructural Study of a Damaged Motorcycle Gear Wheel

Kováčiková¹,

Dubec²,

Kuricová³

2021

Manufacturing Technology

View full text Add to dashboard Cite

The main aim of this article is study the cause of gear wheel failure. This component has worked in the motorcycle gearbox. During the operation of the transmission, the gear wheel tooth was broken, which made it impossible to continue running this device. The investigation of the damaged area was focused on determining the chemical composition of the inclusions which are present of gear wheel material as well as detecting changes of material contrast in microlocalities close to the defective areas. The method of energy-dispersive spectroscopy and scnanning electron microscopy were chosen for this type of analysis. Furthermore, the micropurity and microstructure of the material were evaluated by methods of optical microscopy and scanning electron microscopy. Using a thermo-emission scanning electron microscope, the microcrack area was evaluated in the mode of secondary electrons and also in the mode of backscattered electrons. In this way, the fracture surface was examined in terms of its micromorphology as well as material contrast.

show abstract

Section: Fig 1 Marking Of the Damaged Areamentioning

confidence: 99%

The Microstructural Study of a Damaged Motorcycle Gear Wheel

Kováčiková¹,

Dubec²,

Kuricová³

2021

Manufacturing Technology

View full text Add to dashboard Cite

show abstract

“…Other publications that deal with the problem of properties of aluminum alloys by experimental or numerical solutions are: Influence of heat treatment on the change of properties of Al-Si coating in sheets with very high strength. [12], Analysis of Microstructure Changes for AlSi7Mg0.3 Alloy Caused by Modification [13], Monitoring the fatique crack on the test specimen during the cyclic loading [14], Effect of Wall Thickness on the Quality of Casts from Secondary Aluminium Alloy [15].…”

Section: Aluminium Alloy Solidifiction Mechanismmentioning

confidence: 99%

Model solving of aluminium alloy solidification

Jarosova¹,

Skočilasová²,

Klimenda³

et al. 2021

Manufacturing Technology

View full text Add to dashboard Cite

The paper deals with the process of solidification of a cast aluminium piston into a metal mould (mould). The introductory part presents the methodology of solution where the physical properties of both the aluminium alloy and the steel mould are presented. Furthermore, the solution itself is described, which is performed on one quarter the size of a piston model by using FEM in the ANSYS FLUENT program. Piston solidification temperatures were recorded every five minutes due to the solution complexity. Next part of the paper presents the evaluation where temperature sections in two mutually perpendicular planes and a quarter a size 3D model of piston solidification are presented. At the end of the paper, an overall evaluation of the thermal solidification of the cast piston depending on the solidification time is performed. The results of the numerical solution show that the solidification process begins at 2.5 minutes after casting and ends at 5 minutes. Subsequently, only the piston and the metal mould itself are cooled.

show abstract

Comparison of the Optical Lock-in Thermography using the Reflection Mode and the Transmission Mode

Stalmach,

Dekys,

Straka

et al. 2022

MATEC Web Conf.

View full text Add to dashboard Cite

Optical lock-in thermography is a non-destructive testing method. The surface of the sample is excited using the thermal waves and the response is recorded by the thermal camera. This image thermal sequence is processed using the image processing method named lock-in method. Optical lock-in thermography can be used to detect cracks and damages in metal or composite material. Two position modes are used: the reflection and the transmission mode. In this paper, are compared these two modes. An experiment is carried out on a printed composite plane with the square blinded holes placed in the different depths below the surface. The phase images are created using the lock-in method for both position modes. The results are compared and the advantages and the disadvantage of these position modes find out.

show abstract

Monitoring the fatigue crack on the test specimen during the cyclic loading

Cited by 5 publications

References 4 publications

The Microstructural Study of a Damaged Motorcycle Gear Wheel

The Microstructural Study of a Damaged Motorcycle Gear Wheel

Model solving of aluminium alloy solidification

Comparison of the Optical Lock-in Thermography using the Reflection Mode and the Transmission Mode

Contact Info

Product

Resources

About