Deep Learning algorithm for the assessment of the first damage initiation monitoring the energy release of materials

Monitoring the energy release during fatigue tests of common engineering materials has been shown to give relevant information on fatigue properties, reducing the testing time and material consumption. During a static tensile test, it is possible to assess two distinct phases: In the first phase (Ph...

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Main Authors: Dario Santonocito, Dario Milone
Format: Article
Language:English
Published: Gruppo Italiano Frattura 2022-10-01
Series:Fracture and Structural Integrity
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Online Access:https://www.fracturae.com/index.php/fis/article/view/3605/3694
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author Dario Santonocito
Dario Milone
author_facet Dario Santonocito
Dario Milone
author_sort Dario Santonocito
collection DOAJ
description Monitoring the energy release during fatigue tests of common engineering materials has been shown to give relevant information on fatigue properties, reducing the testing time and material consumption. During a static tensile test, it is possible to assess two distinct phases: In the first phase (Phase I), where all the crystals are elastically stressed, the temperature trend follows the linear thermoelastic law; while, in the second phase (Phase II), some crystals begin to deform, and the temperature assumes a non-linear trend. The macroscopic transition stress between Phase I and Phase II could be related to the �limit stress� that, if cyclically applied, would lead to material failure. Nowadays, it is impossible to distinguish the transition between Phase I and Phase II in an objective way. Indeed, it is up to the operator's experiences. This work aims to create a universal methodology that predicts the limit stress by assessing the change in temperature trend by adopting Neural Networks. A Deep Learning algorithm has been created and trained on experimental data coming from static tensile tests performed on several classes of materials (steels, plastics, composite materials). Once trained, the network can predict the transition temperature at which the first plastic deformation occurs within the material
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spelling doaj-art-365c7b8207c0425091c8f4dfc8485e3f2025-02-03T10:02:59ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932022-10-01166250551510.3221/IGF-ESIS.62.3410.3221/IGF-ESIS.62.34Deep Learning algorithm for the assessment of the first damage initiation monitoring the energy release of materialsDario SantonocitoDario MiloneMonitoring the energy release during fatigue tests of common engineering materials has been shown to give relevant information on fatigue properties, reducing the testing time and material consumption. During a static tensile test, it is possible to assess two distinct phases: In the first phase (Phase I), where all the crystals are elastically stressed, the temperature trend follows the linear thermoelastic law; while, in the second phase (Phase II), some crystals begin to deform, and the temperature assumes a non-linear trend. The macroscopic transition stress between Phase I and Phase II could be related to the �limit stress� that, if cyclically applied, would lead to material failure. Nowadays, it is impossible to distinguish the transition between Phase I and Phase II in an objective way. Indeed, it is up to the operator's experiences. This work aims to create a universal methodology that predicts the limit stress by assessing the change in temperature trend by adopting Neural Networks. A Deep Learning algorithm has been created and trained on experimental data coming from static tensile tests performed on several classes of materials (steels, plastics, composite materials). Once trained, the network can predict the transition temperature at which the first plastic deformation occurs within the materialhttps://www.fracturae.com/index.php/fis/article/view/3605/3694fatigue limitstmdeep learninginfrared thermography
spellingShingle Dario Santonocito
Dario Milone
Deep Learning algorithm for the assessment of the first damage initiation monitoring the energy release of materials
Fracture and Structural Integrity
fatigue limit
stm
deep learning
infrared thermography
title Deep Learning algorithm for the assessment of the first damage initiation monitoring the energy release of materials
title_full Deep Learning algorithm for the assessment of the first damage initiation monitoring the energy release of materials
title_fullStr Deep Learning algorithm for the assessment of the first damage initiation monitoring the energy release of materials
title_full_unstemmed Deep Learning algorithm for the assessment of the first damage initiation monitoring the energy release of materials
title_short Deep Learning algorithm for the assessment of the first damage initiation monitoring the energy release of materials
title_sort deep learning algorithm for the assessment of the first damage initiation monitoring the energy release of materials
topic fatigue limit
stm
deep learning
infrared thermography
url https://www.fracturae.com/index.php/fis/article/view/3605/3694
work_keys_str_mv AT dariosantonocito deeplearningalgorithmfortheassessmentofthefirstdamageinitiationmonitoringtheenergyreleaseofmaterials
AT dariomilone deeplearningalgorithmfortheassessmentofthefirstdamageinitiationmonitoringtheenergyreleaseofmaterials