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Fatigue

MehdiAmiri's picture

Special Issue "Thermodynamics of Materials Degradation"

Dear Colleagues,

The degradation of a structure, under various loading conditions, involves the progress of damage by initiation and growth of defects, such as microvoids and microcracks, and their coalescence into macrocracks. Thermodynamically, all damage mechanisms share a common feature at a much deeper level, which is dissipation of energy. Degradation processes are irreversible, meaning that they cause irreversible alteration to the system and the surroundings.

Teng Cui's picture

Fatigue of Graphene

Materials can suffer mechanical fatigue when subjected to cyclic loading at stress levels much lower than the ultimate tensile strength, and understanding this behaviour is critical to evaluating long-term dynamic reliability. The fatigue life and damage mechanisms of two-dimensional (2D) materials, of interest for mechanical and electronic applications, are currently unknown. Here, we present a fatigue study of freestanding 2D materials, specifically graphene and graphene oxide (GO).

Cemal Basaran's picture

Entropy Special Issue

 

Deadline for manuscript submissions: 30 November 2019

 

Special Issue "Entropy Based Fatigue, Fracture, Failure Prediction and Structural Health Monitoring"

https://www.mdpi.com/journal/entropy/special_issues/fatigue

 

Mike Ciavarella's picture

Analytical Models for Fatigue Life Prediction of Metals in the Stress-Life Approach -- phd thesis by Pietro D’Antuono

dear collegues

  I'd be very grateful if you could have a look, if not a deep reading, at the phd thesis of my last student, playing on classical results on uniaxial fatigue, but with a view of simple, unified perspective on constant and varying amplitude fatigue.  We made large use of e-fatigue.com web site and the data in there.
 Thanks in advance for any remark.  The final thesis will be submitted in few weeks time.

Shuman_Xia's picture

SEM Fracture and Fatigue Call for Papers

Dear Colleagues,

We invite you to submit a paper to the 2020 Society for Experimental Mechanics (SEM) Annual Meeting in one of the many sessions in the Fatigue and Fracture Track. See below for further information on these sessions, and please forward this to others who may be interested.

PhD Positions Available (up to 2) on Fatigue Resistance of Bone

Bones not only support and protect the various organs of our body but provide structure and enable mobility making them the most important structural materials in the human body. While aging, diet and health are known to significantly affect the structural integrity and fracture resistance of bone, fatigue, a significantly more important loading condition, is rarely studied.

Timothy Truster's picture

Open PhD position in multi-resolution fatigue modeling at the University of Tennessee

We have an open PhD position starting in the Spring or Fall semester 2020 at the Computational Laboratory for the Mechanics of Interfaces at the University of Tennessee – Knoxville. A high quality PhD student is sought to study failure of structural materials under fatigue by developing a novel computational approach that explicitly targets traction equilibrium and displacement compatibility along the grain boundaries.

rajan_prithivi's picture

Critical porosity in the fatigue of additively manufactured IN718 via crystal plasticity modeling

https://doi.org/10.1016/j.matdes.2018.04.022

Highlights

1. Critical porosity is estimated in additively manufactured IN718 via crystal plasticity.

2. Porosity is characterized using high resolution tomography.

3. Non-local damage indicator parameters identify the location of fatigue crack initiation.

Ruobing Bai's picture

Journal Club for March 2019: Fatigue of hydrogels

Fatigue of hydrogels

Ruobing Bai (1,2), Zhigang Suo (1)

(1) John A. Paulson School of Engineering and Applied Sciences, Kavli Institute for Bionano Science and Technology, Harvard University

(2) Department of Mechanical and Civil Engineering, California Institute of Technology

 

Bent F. Sørensen's picture

Micromechanical model for prediction of fatigue limit of fibre composites

We have published a paper called "Micromechanical model for prediction of the fatigue limit for unidirectional fibre composites" in Mechanics of Materials. See the link here.

Ruobing Bai's picture

Tearing a hydrogel of complex rheology

Dear colleagues,

I would like to share with you our latest paper focusing on the fracture of hydrogels of complex rheology.

 

Title: Tearing a hydrogel of complex rheology

Authors: Ruobing Bai, Baohong Chen, Jiawei Yang, Zhigang Suo*

Abstract:

Antonio Papangelo's picture

On unified crack propagation laws

The anomalous propagation of short cracks shows generally exponential fatigue crack growth but the dependence on stress range at high stress levels is not compatible with Paris’ law with exponent m=2. Indeed, some authors have shown that the standard uncracked SN curve is obtained mostly from short crack propagation, assuming that the crack size a increases with the number of cycles N as da/dN=H\Delta\sigma^h where h is close to the exponent of the Basquin’s power law SN curve.

Mechanical Testing- Aerospace Materials & Products

In the aerospace industry, testing is critical in successful product development and implementation. Mechanical testing of materials and products used in aerospace applications is governed by strict standards and often require accreditation. The type of testing performed includes tensile, compressive, flexural, fatigue testing, and more.

Shuman_Xia's picture

Abstract Deadline Extended: SEM Fracture and Fatigue Call for Papers

Dear Colleagues,

 

The SEM 2019 annual conference abstract deadline has been extended to October 24, 2018. Please see the Call for Abstracts below and consider submitting an abstract.

 

Postdoctoral vacancy (2.5 years) on multi-axial fatigue modelling and testing for 3D printed metal parts

The use of 3D printed metal structures is taking a very fast ramp-up in industry. General Electric has demonstrated the possibility of printing titanium fuel injectors for their LEAP engine, EADS has printed a nacelle hinge bracket for the Airbus A320, Boeing is printing plastic inlet ducts for high-altitude aircrafts, hip implants and other prosthetics are exploiting the design freedom of additive manufacturing (AM),...

jsegurado's picture

PhD position in Multiscale mechanical modeling of metals , IMDEA-Materials Institute

IMDEA Materials Institute is non-profit research organization located in Madrid, Spain, to carry out research activities in Materials Science and Engineering. More information can be found 

pragtic's picture

Invitation to WCFA2018 - FKM Guideline Training

Dear iMechanicians,

I would like to invite you to the prepared 8th volume of the Workshop on Computational Fatigue Analysis series. The 2018 volume is dedicated to the FKM-Guideline on Strength Assessment, which covers both static and fatigue analysis of common industrial components. The key lecturer this time is Dr Roland Rennert from IMA Dresden, one of the co-authors of its last 6th revised version released in 2012.

jingguo2011's picture

Reminder: 2018 Midwest Mechanics Workshop registration

Dear Colleagues,

This is a gentle reminder that the 2018 Midwest Mechanics Workshop will take place at IIT, Chicago on Thursday, August 9.  The deadline for registration is July 26, so we will have time to figure out the logistics. Note that registration is free for this one-day workshop. Please see:

https://sites.google.com/iit.edu/midmechmat-2018/home

PhD Positions Available (up to 2) on Fatigue Resistance of Bone

Bones not only support and protect the various organs of our body but provide structure and enable mobility making them the most important structural materials in the human body. While aging, diet and health are known to significantly affect the structural integrity and fracture resistance of bone, fatigue, a significantly more important loading condition, is rarely studied.

PhD vacancy (4 years) on fatigue testing of composites with advanced instrumentation

Composites are used more and more as structural components in aerospace industry, automotive sector, wind energy applications,… As a consequence, the loads on those composite components are much higher than for secondary components, and can lead to fatigue damage in the composite part. Moreover, the fatigue behaviour of fibre-reinforced composites is much more complex than that of metals, because of the many different fibre/polymer combinations, the heterogeneous nature of the composite, the anisotropic behaviour of the composite and the multitude of damage mechanisms.

Ruobing Bai's picture

Fatigue Fracture of Self-Recovery Hydrogels

Dear Colleagues,

Here is our recent paper “Fatigue Fracture of Self-Recovery Hydrogels”. To the hydrogel community, this paper distinguishes the fatigue fracture and the self-recovery of a hydrogel. To the mechanics community, we show that, for the first time in hydrogels, the fatigue threshold depends only on the covalent network, but not on the noncovalent interactions that provide dissipation.

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