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Mike Ciavarella's blog

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several phd positions at the Dept Mech Engineering Politecnico di BARI

Soon several phd positions including 1 reserved to non-italian citizens at Politecnico department of Mechanical engineering.

Various options for research themes are available, also including solid mechanics, fatigue, adhesion and contact mechanics.

See attachment or write for details at mciava AT poliba.it

Application expires on Sept.12, but please contact us for details asap !

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a new book "Contact Mechanics" from JR Barber

I am pleased to suggest a very interesting new book from prof JR Barber of UMich, a leading scientist in the field of contact mechanics.

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2 dead, gunman at large in Central Michigan University shooting

Here.  The question of safety especially in US campuses, is serious.

Very terrible news.

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Knowing the strength of adhesion

Knowing the strength of adhesion

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National TV program on Politecnico di BARI and its successes

See a national broadcast on Politecnico di BARI and the region Puglia, with its successes, including the worldwide success of Diesel common rail technology, the GE centre on Addittive Manufacturing and Cold Spray, and others.

 

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UK university staff strike over pension changes – live

See here.  Or here In comparison, our "italian strike" where we only omit 1 session of exams was much less dramatic. 

It will be interesting to follow the UK strike, because I would be surprised if so many academics let such significant part of salary be reduced.

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a "contact sport" between academics

Recently, there was a big competition announced for rough elastic adhesive contact --- by Martin Muser as organizer.  This was published in Tribology Letter, involved the effort of many groups in the world, and finally got even a commentary in Science by Rob Carpick.

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A recent PNAS paper explained! FRACTURE MECHANICS SIMPLE CALCULATIONS TO EXPLAIN SMALL REDUCTION OF THE REAL CONTACT AREA UNDER SHEAR

If you have seen the very nice PNAS paper which just appeared

Sahli, R., Pallares, G., Ducottet, C., Ben Ali, I.E., Al Akhrass, S., Guibert, M., Scheibert, J., 2018, Evolution of real contact area under shear, Proceedings of the National Academy of Sciences, 115(3), pp. 471-476.

Here we provide a simple explanation.

FACTA UNIVERSITATIS

Series: Mechanical Engineering

DOI: 10.22190/FUME180108007C

Short Communication

FRACTURE MECHANICS SIMPLE CALCULATIONS TO EXPLAIN SMALL REDUCTION OF THE REAL CONTACT AREA UNDER SHEAR

UDC 539.6

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a quite critical comment of a recent set of fretting fatigue experiments

 

Effect of out-of-phase loading on fretting fatigue response of Al7075-T6 under cyclic normal loading using a new testing apparatu

Article reference: EFM5856
Journal title: Engineering Fracture Mechanics
Corresponding author: Prof. M. Ciavarella
First author: Prof. M. Ciavarella
Online publication complete: 1-FEB-2018
DOI information: 10.1016/j.engfracmech.2018.01.031

Dear Prof. Ciavarella,

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brake squeal

An interesting commercial/scientific paper 

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Corriere della Sera: recruitment in Italian Academia

A tutti i colleghi italiani:   E' stata pubblicata qua.  Il testo è anche in coda.

To all italians abroad, but also to the ones who want to enter the very difficult and close italian system, we have a letter here

 

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under certain extreme conditions, the Navier-Stokes equations output nonsense.

 

Two mathematicians prove that under certain extreme conditions, the Navier-Stokes equations output nonsense.

Here.

 

 

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Nobel laureate Randy Schekman: How journals like Nature, Cell and Science are damaging science

An article on the Guardian here.  Critics will say Shelkman has founded his own open access journal, here, probably competing with Nature, Cell and Science, which explains a lot.

 

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Kenneth Langstreth Johnson. 19 March 1925 — 21 September 2015

I strongly recommend reading these two papers about the recent loss of Ken L Johnson, FRS, Timoshenko Medallist, Gold Tribology Medal, who died the day of my 45th birthday, exactly twice as old.

Rod Smith Biographical Memoirs of Fellows of the Royal Society · August 2016 Kenneth Langstreth Johnson. 19 March 1925 — 21 September 2015 DOI: 10.1098/rsbm.2016.0012   

Hills, D. A., Nowell, D., & Barber, J. R. (2016). KL Johnson and contact mechanics. Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 0954406216634121.

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Certification for Damage Tolerance

I've posted a new forum.   Please see here.

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An inspiring seminar by Prof. Huajian Gao -- Mechanics as an Enabling tool in bioinspired materials and biological interactions of nanomaterials

Professor Huajian Gao of Brown University speaks at MIT Distinguished Seminar Series (March 2016).

It is a unique opportunity to enjoy the many important recent achievements of Huajian's group.

Mechanics as an Enabling tool in bioinspired materials and biological interactions of nanomaterials

Here.

Not to be missed!

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Fontanela instability in non-linear oscillators with cyclic symmetry

I wanted to bring attention to the very important Fontanela et al recent results in vibrations of cyclic structures like in turbine engines.

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