dr hab. inż. Marcin Białas


Doktorat
2003-10-27Modelowanie rozwoju uszkodzeń w warstwach kontaktowych materiałów 
promotor -- prof. dr hab. inż. Zenon Mróz, IPPT PAN
572 
Habilitacja
2013-01-31Mechanical Modelling of Thin Films 
Ostatnie publikacje
1.Białas M., Progressive Frictional Delamination of an Infinite Elastic Film on a Rigid Substrate Due to In-Plane Point Loading, JOURNAL OF ELASTICITY, ISSN: 0374-3535, DOI: 10.1007/s10659-011-9360-3, Vol.108, pp.151-177, 201230p.
2.Białas M., Guzina B.B., On the viscoelastic characterization of thin tissues via surface-wave sensing, INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES, ISSN: 0020-7683, Vol.48, No.14-15, pp.2209-2217, 201140p.
3.Białas M., Finite element analysis of stress distribution in thermal barrier coatings, SURFACE AND COATINGS TECHNOLOGY, ISSN: 0257-8972, Vol.2002, pp.6002-6010, 2008
4.Białas M., Mróz Z., An energy model of segmentation cracking of thin films, MECHANICS OF MATERIALS, ISSN: 0167-6636, DOI: 10.1016/j.mechmat.2007.02.004, Vol.39, No.9, pp.845-864, 2007

Streszczenie:

On the basis of analytical modelling of delamination of a thin film on a stretched substrate an energy model of film segmentation cracking has been formulated. The model focuses on a topological transformation between an intact and a damaged structure, rather than on a constitutive modelling of fracture itself. An energy transition condition should be satisfied in order for cracks to occur. The model provides a unique solution in the number of cracks for given material parameters. It has been validated by measuring the fracture energy of a silicon oxide thin film deposited on a poly(ethylene terephthalate) (PET) substrate, where a constant value of plastic shear stress at the film/substrate interface can be assumed.

Słowa kluczowe:

Segmentation cracking, Delamination, Fracture energy, Oxide coating

Afiliacje autorów:

Białas M.-IPPT PAN
Mróz Z.-IPPT PAN
5.Białas M., Mróz Z., Crack patterns in thin layers under temperature loading. Part I. Monotonic loading, ENGINEERING FRACTURE MECHANICS, ISSN: 0013-7944, DOI: 10.1016/j.engfracmech.2005.10.012, Vol.73, pp.917-938, 2006

Streszczenie:

The analysis of cracking and delamination of a plate bonded to a substrate is presented in the paper. The plate is subjected to a monotonic temperature loading. Several types of interface constitutive laws are used in order to obtain analytical solutions specifying the maximum number of plate fragments and the description of fragmentation process. The segmentation cracking model is further used to measure the ultimate shear strength of a thin film–substrate interface.

Słowa kluczowe:

Cohesive zone modelling, Segmentation cracking, Delamination, Temperature loading

Afiliacje autorów:

Białas M.-IPPT PAN
Mróz Z.-IPPT PAN
6.Białas M., Mróz Z., Crack patterns in thin layers under temperature loading. Part II. Cyclic loading, ENGINEERING FRACTURE MECHANICS, ISSN: 0013-7944, DOI: 10.1016/j.engfracmech.2005.10.013, Vol.73, pp.939-952, 2006

Streszczenie:

The paper presents an analysis of cracking and delamination of an elastic plate bonded to a rigid substrate. The plate is subjected to a cyclic temperature loading. The bond between the plate and the substrate is simulated using rigid–frictional and rigid–cohesive–frictional interface models. The states of adaptation or incremental failure are distinguished in the case of the softening interfacial law. The proposed modelling is validated to predict fragmentation of a concrete pavement subjected to temperature loading. The obtained results can serve as reference solutions for numerical calculations of more complex cases.

Słowa kluczowe:

Cohesive zone modelling, Segmentation cracking, Delamination, Cyclic loading, Temperature loading

Afiliacje autorów:

Białas M.-IPPT PAN
Mróz Z.-IPPT PAN
7.Białas M., Mróz Z., Modelling of progressive interface failure under combined normal compression and shear stress, INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES, ISSN: 0020-7683, DOI: 10.1016/j.ijsolstr.2005.01.006, Vol.42, No.15, pp.4436-4467, 2005

Streszczenie:

The present work is concerned with an analysis of progressive interface failure under normal compressive stress and varying shear stress using the cohesive crack model. The softening model is assumed and frictional linear stress at contact is accounted for. A monotonic loading in anti-plane shear of an elastic plate bonded to a rigid substrate is considered. An analytical solution is obtained by neglecting the effect of minor shear stress component in the plate. The elastic and plate interface compliances are included into the analysis. Three types of solutions are distinguished in the progressive delamination analysis, namely short, medium and long plate solutions. The analysis of quasi-static progressive delamination process clarifies the character of critical points and post-critical response of the plate. The analytical solution provides a reference benchmark for numerical algorithms of analysis of progressive interface delamination. The case of a rigid–softening interface was treated in a companion paper, where also cyclic loading was considered.

Słowa kluczowe:

Interface, Debonding, Cohesive zone, Instability points

Afiliacje autorów:

Białas M.-IPPT PAN
Mróz Z.-IPPT PAN
8.Mróz Z., Białas M., A simplified analysis of interface failure under compressive normal stress and monotonic or cyclic shear loading, INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS, ISSN: 0363-9061, DOI: 10.1002/nag.417, Vol.29, No.4, pp.337-368, 2005

Streszczenie:

Interface damage and delamination is usually accompanied by frictional slip at contacting interfaces under compressive normal stress. The present work is concerned with an analysis of progressive interface failure using the cohesive crack model with the critical stress softening and frictional traction present at the contact. Both monotonic and cyclic loadings are considered for anti-plane shear of an elastic plate bonded to a rigid substrate by means of cohesive interface. An analytical solution can be obtained by neglecting the effect of minor shear stress component. The analysis of progressive delamination process revealed three solution types, namely: short, medium and long plate solutions. The long plate solution was obtained under an assumption of quasistatic progressive growth of the delamination zone. In view of snap back response, the quasistatic deformation process cannot be executed by either traction or displacement control. The states of frictional slip accompanied by shake down or incremental failure are distinguished in the case of cyclic loading, related to load amplitude and structural dimensions. The analysis provides a reference solution for numerical treatment of more complex cases.

Afiliacje autorów:

Mróz Z.-IPPT PAN
Białas M.-IPPT PAN
9.Białas M., Majerus P., Herzog R., Mróz Z., Numerical simulation of segmentation cracking in thermal barrier coatings by means of cohesive zone elements, MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, ISSN: 0921-5093, DOI: 10.1016/j.msea.2005.08.208, Vol.412, pp.241-251, 2005

Streszczenie:

The paper presents comparative experimental and numerical studies of segmentation cracking of thermal barrier coatings (TBCs) during three point bending tests. The finite element simulation of failure development was performed using a cohesive zone approach. Acoustic emission (AE) technique and in situ observations by a charge-coupled device (CCD) camera allowed to determine critical strain values correlated with the damage evolution. Location of crack initiation and crack propagation paths up to macroscopic failure were investigated for as-received and annealed specimens. The results of the numerical simulations and of the experiment were quantitatively similar. The influence of critical energy release rate on crack patterns was examined, resulting in the increase of crack numbers due to decreased value of GIGI. This explains the good spallation resistance of electron beam-physical vapour deposition (EB-PVD) coatings, where GIGI is lower than in the case of air plasma sprayed (APS) thermal barrier coatings. Lower value of GIGI stimulates segmentation cracking and reduces delamination, as observed within electron beam-physical vapour deposition coatings.

Słowa kluczowe:

Cohesive zone modelling, Segmentation cracking, Thin film coating, Bending test

Afiliacje autorów:

Białas M.-IPPT PAN
Majerus P.-other affiliation
Herzog R.-other affiliation
Mróz Z.-IPPT PAN

Lista ostatnich monografii
1.
280
Białas M., Mechanical modelling of thin films; Stress evolution, degradation, characterization, IPPT Reports on Fundamental Technological Research, 1, pp.1-238, 2012
Lista rozdziałów w ostatnich monografiach
1.
279
Maciejewski J., Białas M., Mróz Z., 6th European Congress on Computational Methods in Applied Sc. and Engng. (ECCOMAS 2012), September 10-14, 2012, Vienna, Austria, rozdział: Modelling of contact interface oxidation process at asperity scale, University of Vienna, Austria, pp.1-8, 2012
2.
176
Białas M., Mróz Z., Multiscale modelling of damage and fracture processes in composite materials, Series: CISM International Centre for Mechanical Sciences, rozdział: Damage models at material interfaces, Springer, Sadowski T. (Ed.), 474, pp.213-270, 2005
3.
525
Mróz Z., Białas M., IUTAM Symposium on Analytical and Computational Fracture Mechanics of Non-Homogeneous Materials, rozdział: Modeling of Progressive Interface Failure Under Monotonic and Cyclic Loading, Springer, Dordrecht, series Solid Mechanics and its Applications, 97, pp.211-222, 2002

Prace konferencyjne
1.Białas M., Mróz Z., An energy model of segmentation cracking of SiOX thin film on a polymer substrate, 31st International Conference on Advanced Ceramics and Composites, 2007-01-21/01-26, Daytona Beach (US), DOI: 10.1002/9780470339510.ch23, Vol.28, No.3, pp.231-242, 2007

Słowa kluczowe:

segmentation cracking, thin films, polymer substrate, energy transition, polyethylene terephthalate

Afiliacje autorów:

Białas M.-IPPT PAN
Mróz Z.-IPPT PAN

Abstrakty konferencyjne
1.Maciejewski J., Białas M., Mróz Z., Two scale modelling of wear and oxidation processes, FRICTION 2012, VII International Conference, Modelling And Simulation Of The Friction Phenomena In The Physical And Technical Systems, 2012-05-22/05-22, Warszawa (PL), pp.1, 2012
2.Maciejewski J., Białas M., Mróz Z., Evolution of friction coefficient in the tribological test, XX FRENCH-POLISH SEMINAR OF MECHANICS, 2012-05-12/05-12, Warszawa (PL), pp.1, 2012