Development of Fatigue Testing System for in-situ Observation by AFM & SEM

Amir Farokh Payam; Oliver Payton; Mahmoud Mostafavi; Loren Picco; Stacy Moore; Tomas Martin; A.D. Warren; David Knowles

doi:10.1051/matecconf/201930014002

Development of Fatigue Testing System for in-situ Observation by AFM & SEM

Amir Farokh Payam, Oliver Payton, Mahmoud Mostafavi, Loren Picco, Stacy Moore, Tomas Martin, A.D. Warren, David Knowles

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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Abstract

A three-point bend fatigue miniature stage for in-situ observation of fatigue microcrack initiation and growth behaviour by scanning electron microscopy (SEM) and atomic force microscopy (AFM) has been manufactured. Details of the stage design with finite element analysis of the stress profiles on loading are provided. The proposed stage facilitates study of the micro mechanisms of fatigue when used during SEM and AFM scanning of the sample surface. To demonstrate the applicability of the system, fatigue tests have been performed on annealed AISI Type 316 stainless steel. Surface topography images obtained by SEM and HS-AFM (High Speed AFM) are presented for comparison. The data can be used to validate crystal plasticity models which should then directly predict multiaxial behaviour without recourse to deformation rules such as equivalent stress or strain.

Original language	English
Title of host publication	ICMFF12 - 12th International Conference on Multiaxial Fatigue and Fracture
Publisher	MATEC Web Conf.
Number of pages	7
Volume	300
DOIs	https://doi.org/10.1051/matecconf/201930014002
Publication status	Published (in print/issue) - 2 Dec 2019

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@inproceedings{25c90fda72f0453a84566436a7fa63d7,

title = "Development of Fatigue Testing System for in-situ Observation by AFM & SEM",

abstract = "A three-point bend fatigue miniature stage for in-situ observation of fatigue microcrack initiation and growth behaviour by scanning electron microscopy (SEM) and atomic force microscopy (AFM) has been manufactured. Details of the stage design with finite element analysis of the stress profiles on loading are provided. The proposed stage facilitates study of the micro mechanisms of fatigue when used during SEM and AFM scanning of the sample surface. To demonstrate the applicability of the system, fatigue tests have been performed on annealed AISI Type 316 stainless steel. Surface topography images obtained by SEM and HS-AFM (High Speed AFM) are presented for comparison. The data can be used to validate crystal plasticity models which should then directly predict multiaxial behaviour without recourse to deformation rules such as equivalent stress or strain.",

author = "{Farokh Payam}, Amir and Oliver Payton and Mahmoud Mostafavi and Loren Picco and Stacy Moore and Tomas Martin and A.D. Warren and David Knowles",

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T1 - Development of Fatigue Testing System for in-situ Observation by AFM & SEM

AU - Farokh Payam, Amir

AU - Payton, Oliver

AU - Mostafavi, Mahmoud

AU - Picco, Loren

AU - Moore, Stacy

AU - Martin, Tomas

AU - Warren, A.D.

AU - Knowles, David

PY - 2019/12/2

Y1 - 2019/12/2

N2 - A three-point bend fatigue miniature stage for in-situ observation of fatigue microcrack initiation and growth behaviour by scanning electron microscopy (SEM) and atomic force microscopy (AFM) has been manufactured. Details of the stage design with finite element analysis of the stress profiles on loading are provided. The proposed stage facilitates study of the micro mechanisms of fatigue when used during SEM and AFM scanning of the sample surface. To demonstrate the applicability of the system, fatigue tests have been performed on annealed AISI Type 316 stainless steel. Surface topography images obtained by SEM and HS-AFM (High Speed AFM) are presented for comparison. The data can be used to validate crystal plasticity models which should then directly predict multiaxial behaviour without recourse to deformation rules such as equivalent stress or strain.

AB - A three-point bend fatigue miniature stage for in-situ observation of fatigue microcrack initiation and growth behaviour by scanning electron microscopy (SEM) and atomic force microscopy (AFM) has been manufactured. Details of the stage design with finite element analysis of the stress profiles on loading are provided. The proposed stage facilitates study of the micro mechanisms of fatigue when used during SEM and AFM scanning of the sample surface. To demonstrate the applicability of the system, fatigue tests have been performed on annealed AISI Type 316 stainless steel. Surface topography images obtained by SEM and HS-AFM (High Speed AFM) are presented for comparison. The data can be used to validate crystal plasticity models which should then directly predict multiaxial behaviour without recourse to deformation rules such as equivalent stress or strain.

U2 - 10.1051/matecconf/201930014002

DO - 10.1051/matecconf/201930014002

M3 - Conference contribution

VL - 300

BT - ICMFF12 - 12th International Conference on Multiaxial Fatigue and Fracture

PB - MATEC Web Conf.

ER -

Development of Fatigue Testing System for in-situ Observation by AFM & SEM

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