MS number

Organizers

Topic

Description

1

Leong Hien Poh
National University of Singapore

Lizhi Sun
UC Irvine

Jiann-Wen Woody Ju
UCLA

Ron Peerlings
Eindhoven University of Technology

Modelling and Characterization of Damage and Fracture

A wide range of novel computational and experimental techniques has been developed for predicting inelastic material behaviour, including damage localisation, crack initiation, crack propagation, and other material instabilities. The mini-symposium aims to provide a platform for discussion of the newest theoretical and numerical developments at all stages of inelastic material response and degradation, up to failure. Topics of interest include, but are not restricted to, the following areas:
 

  • Initiation or propagation of defects and cracks
     
  • Mechanical, thermal, chemical loading, etc.
     
  • Discrete models, micromechanical formulations, continuum damage descriptions
     
  • Multiscale frameworks bridging different length / time scales
     
  • Determination and evaluation of physically based length scales
     
  • Objective formulations with non-local / gradient / phase-field enhancements
     
  • Transition from continuous to discontinuous formulation
     
  • Experimental characterization and validation of damage and failure mechanisms

2

Chao Sun
Dept. of Civil and Environmental Engineering, Louisiana State University, Baton Rouge, L.A., 70803

Wei Song
Dept. of Civil, Construction and Environmental Engineering, University of Alabama, Tuscaloosa, AL, 35487

New Advances on Damage Detection of Civil, Mechanical and Aerospace Structures

Civil, mechanical and aerospace structures suffer from various damages, e.g., corrosions, cracks, delamination and etc. due to severe loading and environmental effects during service life. Timely and efficient damage detection is essential to ensure the structural performance and integrity. Recently, new methods based on emerging technologies including advanced signal processing, computer vision and artificial intelligence are under active investigation. This mini-symposium aims to enhance discussions on the recent advances on damage detection of, but not limited to, civil, mechanical and aerospace structures. Research topics of this MS include but are not limited to:
 

  • Damage detection using emerging technologies such as computer vision (images, videos), advanced signal processing, data analytics and machine learning/deep learning techniques
     
  • Crack detection and quantification using new sensing approaches and algorithms
     
  • System identification and damage detection using model-,data-based or hybrid methods
     
  • Non-destructive testing (NDT) of structures
     
  • Application of new methods for damage detection of real structures, e.g., buildings, bridges, wind turbines, aircraft structures and etc.
     

3

Taehyo Park
Hanyang University

Jong-Su Jeon
Hanyang University

Robin Eunju Kim
Hanyang University

Wooseok Kim
Chungnam National University

Jae Hae Lee
Korea Maritime and Ocean University

Sang-Youl Lee
Andong National University

Jaeheum Yeon
Texas A&M University-Commerce

Do Hyung Lee
PaiChai University

Damage Assessment of Civil Infrastructural Systems Subjected to Extreme Loadings

Natural and man-made hazards including earthquakes, windstorms, floods, fires, and tsunamis have caused significant damage to critical civil infrastructural systems in the past. One of the major challenges facing structural engineers is to develop innovative approaches to reduce the risk of catastrophic damage due to these extreme events, and to improve the resiliency of infrastructure. This mini-symposium focuses on the development and use of advanced computational and experimental techniques for a reliable assessment and evaluation of structures subjected to natural or man-made hazards.

4

Taehyo Park
Hanyang University

Yong-Rak Kim
University of Nebraska–Lincoln

Kyoungsoo Park
Yonsei University

SukHoon Pyo
UNIST

Damage, failure and fracture in quasi-brittle materials

Most geomaterials used in construction are quasi-brittle and heterogenous in nature. When subjected to different peak loading, they undergo strength variation. This variation is caused by many coupled and non-coupled phenomena. (Plasticity: Yield Surface Hardening, Dilation, Hydrostatic Phenomena etc.; Damage: Cracking, Area Reduction, Anisotropies, Confinement effect etc.). To capture the variation in behavior of material, the damage and plasticity effect must be incorporated in constitutive relations. Here only the damage effect will be taken into consideration. So, this mini symposium will provide a platform to discuss the latest advancement in damage and fracture mechanics of quasi-brittle materials. Mostly focus on these key sentences, but not limited to
 

  • Damage induced anisotropy in material.
     
  • Effect of confinement on the damage evolution.
     
  • Negative damage under high confinement pressure.
     
  • Shear induce damage.
     
  • Evolution of damage surface/damage threshold or dynamic damage threshold.
     
  • Cohesive zone modelling.
     
  • Post peak softening behavior transforms from brittle to ductile under high confinement.
     
  • The theoretical, experimental and numerical works of above (not limited to above) will be welcomed and highly appreciated.
5

Aly Mousaad Aly
Louisiana State University

Damage Causes, Forms, and Mitigation Countermeasures in Structures under Single and Multiple Hazards

Wind, wave, and seismic hazards, coupled with aging and vulnerable structures, pose the potential for damage and loss of life and property. Multihazard forces can wreak catastrophic damage to buildings, bridges, wind turbines, offshore structures, and the infrastructure in general. Consequently, damage mitigation is indispensable for safety, serviceability, and recoverability of critical infrastructure under multiple hazards. To do so, fundamental understanding of damage causes, forms, progress, and mitigation including passive, active, and hybrid techniques is needed. In this session, we solicit high quality presentations of original research focused on the state-of-the-art techniques and methods employed in damage minimization/prevention in structures under single and multiple hazards. Potential topics include, but are not limited to, the following: - Wind-induced damage in buildings; - Tornado damage; - Earthquake-induced damage in structures; - Damage mitigation in structures for wind and seismic hazards; - Vibration control in structures to mitigate damage under single and/or multiple hazards; - Damage mitigation in wind turbines; - High-rise buildings; - Passive mitigation techniques; - Counter measures to protect lives and properties from damage in buildings.

6

Houssem Badreddine
University of Technology of Troyes

Stefanie Reese
Aachen University

Michael Brünig
Universität der Bundeswehr München

José César de Sà
University of Porto

Carl Labergere
University of Technology of Troyes

Khemais Saanouni
University of Technology of Troyes

Computational aspects of damage mechanics 

When subjected to various loading paths, materials may exhibit severe strain localization leading to the occurrence of different kinds of damage. This damage occurrence influences strongly the material behavior including different involved physical phenomena. This mini-symposium is dedicated to the formulation and numerical implementation of various advanced constitutive equations describing the strong and full coupling between damage and other associated physical phenomena (inelastic flow, hardenings, initial and induces anisotropies, textures, heat fluxes, diffusion, corrosion, healing …) under small and/or finite strains.

Typical topics of interest concern:

  • The strong coupling between damage and other physical phenomena exhibited by material behavior in the framework of advanced nonlocal formulations including generalized continua as higher gradient continua, fully nonlocal continua, phase field theories…
  • Associated advanced numerical methods including global and local integration schemes as well as finite element technology and challenging aspects related to various other methods such as  MESHLESS or Hybrid FEM/MESHLESS methods.
7

Mohammadreza Yaghoobi
University of Michigan, Ann Arbor

George Z. Voyiadjis
Louisiana State University

Experiment and simulation of damage, fracture, and fatigue in polycrystalline metals

This symposium incorporates the recent experimental and numerical breakthroughs in the field of damage, fracture and fatigue in metallic polycrystals. Both experimental and numerical aspects can include different length scales from macro to nano. Different aspects will be addressed including the multiscale numerical modelling of material response during cyclic loading, simulation of crack initiation and growth in fatigue, in-situ and ex-situ characterization techniques of fracture and fatigue, incorporation of big data, data fusion, and machine learning for fatigue life prediction. It will potentially contributes to various fields including infrastructure and building construction, aerospace and automobile, electronics, and medical and healthcare.

 

Following aspects are targeted by this symposium:

  • Modelling of failure, damage, and fatigue in materials at different length scales using continuum modelling, crystal plasticity simulation, discrete dislocation dynamics, atomistic simulations, and multiscale frameworks
  • Advanced characterization techniques to capture the fatigue phenomenon
  • Incorporation of big data, data fusion, and machine learning for fatigue life prediction
  • Verification, validation, and uncertainty quantification issues in fatigue.
8

Michael M. Khonsari
Louisiana State University

Cemal Basaran
University at Buffalo

 

Application of Entropy in Experimental and Computational Damage Mechanics

Over the last decade, there has been significant progress in using entropy for damage and fracture mechanics of materials and interfaces. This symposium will focus on experimental and computational damage, degradation and fracture mechanics of materials and interfaces using entropy as the key criterion. The symposium is open to all engineering applications of damage and fracture, including but not limited to processes involving thermo-mechanical, electrical current, corrosion, radiation, thermal gradient, and chemical degradation.  

9

Angelo R Maligno
University of Derby, UK

Luigi Sanguigno
University of Derby, UK

Ahmad Zamani
University of Derby, UK

Marcello Lepore
University of Derby, UK

Damage and Fracture Behaviour of Additive Manufactured Mechanical Components

The advent of additive manufacturing (AM) processes applied to the fabrication of structural components creates the need for design methodologies supporting structural optimisation approaches that take into account the specific characteristics of the process. While AM processes give unprecedented geometrical design freedom, which can result in significant reductions of component weight, on the other hand they have implications in the damage, fatigue and fracture strength due, for instance, to residual stresses and the microstructure. This is linked to stress concentration effects and anisotropy that still need research. Therefore, this mini-symposium aims at bringing together papers investigating features of AM processes with relevance to the mechanical behaviour of AM structural components, particularly, but not exclusively, from the viewpoints of damage, fatigue, and fracture behaviour. The submission of research on numerical simulations or experimental work, or a combination of both, is welcome. The application of damage and fracture mechanics concepts, the effects of stress concentration effects, residual stresses, anisotropic behaviour is of particular interest for a wide range of AM structural applications ranging from biomedical to energy and aerospace applications.
10

Xiaodan Ren
Tongji University, Shanghai, China

De-Cheng Feng
Southeast University, Nanjing China

Tiancan Huang
Guangzhou University, Guangzhou, China

Jie Li
Tongji University, Shanghai China

Damage modelling of engineering structures: from localized cracking to structural collapse

Starting with localized cracking and ending with structural collapse, the progressive failure of engineering structures is usually governed by damage evolution in different levels. To this end, theoretical models and numerical methods for predicting the damage behavior of structures play increasingly important roles in the design of structures, although their current status lag far behind engineering practices. This symposium aims to promote collaborations among academic researchers and industrial engineers in developing and applying damage models and related numerical methods to the prediction of nonlinear behavior of engineering structures. Those who have been working on related fields are cordially invited to exchange their ideas and research outcome in this mini-symposium.

11

Zbigniew L. Kowalewski
Polish Academy of Sciences, Warsaw

Zdzislaw Nowak
Polish Academy of Sciences, Warsaw

Ryszard B. Pecherski
Polish Academy of Sciences, Warsaw

Constitutive modelling of flow and failure of solids using damage mechanics and plasticity theory

Significant efforts have been made during the past few decades to construct coupled damage-plasticity models by specifying the interaction between the two dissipative mechanisms.

Macroscopic and micromechanical models are applied to examine the damage mechanics accounting for the statistical aspects. By use of  the non-destructive techniques and software it is possible to obtain the characterization of cracks and voids during materials fracture. X-ray computed tomography offers a digital information on 3-D geometry and topology of voids and cracks distribution. Any non-destructive techniques used for mechanical damage assessment and the quantification of damage distribution offer accurate quantitative analysis of material quasi-static and dynamic fracture processes. Focus will be made on the most fundamental form of the damage models which address diverse characteristics of material inelasticity associated with damage.

Topics of interest include, but are not restricted to, the following areas:

  • Anisotropic plasticity and damage models for numerical analysis of elasto-plastic and elasto-viscoplastic problems
     
  • A damaged visco-plasticity models for pressure and temperature sensitive materials
     
  • The elasto-viscoplasticity accounting for microshear banding and damage induced anisotropy effects
     
  • The constitutive modelling and critical condition for the shock loading of cellular solids
     
  • Interaction of deformation waves and damage phenomena in inelastic solids
     
  • X-ray microtomography applied to materials fracture characterization and image reconstruction in  accurate quantitative analysis of damage
     
  • The statistical fracture mechanics approach to quasi-static and dynamic fracture problems
12

George Z. Voyiadjis

Louisiana State University (LSU)

Houssem Badreddine

University of Technology of Troyes

Carl Labergere,

University of Technology of Troyes

In Honor of Prof. Khemais Saanouni

“Advanced Damage mechanics and its application in metal forming”

This symposium is aimed to honor Prof. Khemais Saanouni’s scientific accomplishments. The proposed symposium will bring together leading scientists in the research fields described below to discuss the frontier research issues and directions. The invited speakers will include some of the close friends, colleagues, as well as former and current students and postdocs of Prof. Saanouni. During his research career in the 1970s, Prof. Saanouni has been leading several important fields of solid mechanics, damage behavior modeling, and numerical methods for application to metal forming simulations. He has made important contributions to fundamental theories in damage as well as practical applications of these theories in metal forming. He devoted an important part of his work to allow the use of advanced models in the prediction of damage in metal forming for the better understanding of damage behavior during the forming processes. In addition to his original research papers, his book “Damage Mechanics in Metal Forming” integrates his original contributions in advanced modeling for application in numerical simulations of metal forming.

In order to honor the work of Pr. Saanouni, mini-symposium is dedicated to the accurate description of ductile and fatigue damage and fracture behavior of advanced -materials under complex loading conditions including compression, shear and tension, cyclic loading. Contributions dealing with mechanisms of ductile damage and fracture, modeling of ductile damage and fracture, strain localization, non-local models, mesh dependency, fracture initiation, multi-scale approaches, numerical application of ductile damage and fracture criteria to solve industrial problems, and anisotropy in ductile fracture are generally the topics of interest.