Using AE Signals to Investigate the Fracture Process in an Al–Ti Laminate

Świt, Grzegorz; Krampikowska, Aleksandra; Pała, T.; Lipiec, Sebastian; Dzioba, Ihor

doi:10.3390/ma13132909

Cited by 7 publications

(8 citation statements)

References 49 publications

(59 reference statements)

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“…The paper by [ 31 ] describes tests conducted to identify the mechanisms occurring during the fracture of single-edge notches loaded in three-point bending (SENB) specimens made from an Al–Ti laminate. The experimental tests were complemented with microstructural analyses of the specimens’ fracture surfaces and an in-depth analysis of acoustic emission (AE) signals.…”

Section: Description Of the Articles Presented In The Issuementioning

confidence: 99%

“…The paper presents the application of the AE method to identify fracture processes in the layered Al–Ti composite, using a non-hierarchical method for clustering AE signals (k-means) and analyses using waveform time domain, fast Fourier transform (FFT Real) and waveform continuous wavelet, based on the Morlet wavelet. These analyses made it possible to identify different fracture mechanisms in Al–Ti composites, which is very significant for the assessment of the safety of structures made from this material [ 31 ].…”

Section: Description Of the Articles Presented In The Issuementioning

confidence: 99%

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Testing of Materials and Elements in Civil Engineering

Schabowicz

2021

Materials

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This issue is proposed and organized as a means to present recent developments in the field of testing of materials in civil engineering. For this reason, the articles highlighted in this issue should relate to different aspects of testing of different materials in civil engineering, from building materials and elements to building structures. The current trend in the development of materials testing in civil engineering is mainly concerned with the detection of flaws and defects in elements and structures using destructive, semi-destructive, and nondestructive testing. The trend, as in medicine, is toward designing test equipment that allows one to obtain a picture of the inside of the tested element and materials. Very interesting results with significance for building practices of testing of materials and elements in civil engineering were obtained.

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Section: Description Of the Articles Presented In The Issuementioning

confidence: 99%

Section: Description Of the Articles Presented In The Issuementioning

confidence: 99%

Testing of Materials and Elements in Civil Engineering

Schabowicz

2021

Materials

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“…Acoustic emission is one of the interdisciplinary methods. It is used whenever the source of information about the change in the state of the tested material and the course of the technological process are structural vibrations [1][2][3][4][5]. The aim of the study was to apply acoustic emission in research of the heat treatment process.…”

Section: Introductionmentioning

confidence: 99%

“…Registered signals are related only to the acoustic effects occurring in the material under study [13]. Sources of acoustic emission in metals are [3,5,[14][15][16][17][18][19][20][21]: dislocation motion due to plastic deformation, formation of twins, phase transitions of the displacive type, micro and macro cracks. Acoustic emission is a method of obtaining new information about phenomena occurring during phase changes.…”

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confidence: 99%

Bulletin of the Polish Academy of Sciences: Technical Sciences

Trafarski,

Łazarska,

Ranachowski

2021

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of acoustic emission during heat treatment processes show that this method is the source of relevant information about the phenomena occurring in the processed material [6,7,11,12]. Measurement of acoustic emission signals is performed using the passive method. The apparatus used has no influence on the tested object. Registered signals are related only to the acoustic effects occurring in the material under study [13]. Sources of acoustic emission in metals are [3,5,[14][15][16][17][18][19][20][21]: dislocation motion due to plastic deformation, formation of twins, phase transitions of the displacive type, micro and macro cracks. Acoustic emission is a method of obtaining new information about phenomena occurring during phase changes. The applied research techniques may be used in the industry to test large samples in the future. Monitoring of heat treatment processes is vitally important for the utility values of finished industrial products. By tracking the breakdown kinetics of supercooled austenite, processes can be regulated and improved. New solutions and technologies in this aspect are still being searched for. MATERIALS AND METHODS Research materialThe samples were prepared from 27MnCrB5-2 steel. Samples were taken and prepared from one steel rod. Cylindrical specimens with diameters of 22 mm and height of 25 mm were made. The chemical composition of 27MnCrB5-2 steel is presented in Table 1.The steel subjected to the tests is used in the automotive industry for fasteners of machine parts. The fasteners are heat treated to improve the properties of the material from which they are made. During the tests, the continuous cooling process was performed on the samples.

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“…Scholars have widely studied many MIL composite systems, such as Ti/Al [ 8 , 9 , 10 , 11 , 12 ], Al/Fe [ 13 , 14 ], Cu/Al [ 15 ], Ni/Al [ 16 ] Al/Mg [ 17 , 18 , 19 ], and Al/Mg/Ti [ 20 ]. Among them, the research on AlTi-based composites is relatively mature.…”

Section: Introductionmentioning

confidence: 99%

Microstructures and Properties of AlMgTi-Based Metal-Intermetallic Laminate Composites by Dual-Steps Vacuum Hot Pressing

Meng

Zhou

et al. 2020

Materials

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AlMgTi-based metal–intermetallic laminated composites were successfully fabricated through an innovative dual-step vacuum hot pressing. First, this study prepares the AlTi-based laminated composites by vacuum hot pressing at 650 °C. Then, the researchers place the Mg-Al-1Zn (AZ31) magnesium alloy between the prepared AlTi-based laminated composites at 430 °C for hot pressing. This study investigates the microstructure, phase composition, and microhardness distribution across interfaces of the intermetallics and metal. A multilayer phase (Mg17Al12, Al3Mg2, and transition layers) structure can be found from the diffusion layers between Al and AZ31. The microhardness of the material presents a wavy distribution in the direction perpendicular to the layers; the maximum can be up to 600.0 HV0.2 with a minimum of 28.7 HV0.2 The microhardness gradient of an AlMgTi-based composite is smoother due to the different microhardness of the layers, and reduces the interface stress concentration. The bending strength of AlMgTi-based composites can reach 265 MPa, and the specific strength is 105 × 103 Nm/kg, higher than AlTi-based composites.

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Using AE Signals to Investigate the Fracture Process in an Al–Ti Laminate

Cited by 7 publications

References 49 publications

Testing of Materials and Elements in Civil Engineering

Testing of Materials and Elements in Civil Engineering

Bulletin of the Polish Academy of Sciences: Technical Sciences

Microstructures and Properties of AlMgTi-Based Metal-Intermetallic Laminate Composites by Dual-Steps Vacuum Hot Pressing

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