PHYSICS OF FRACTURE LABORATORY

 

Head of Laboratory

Professor Yury I. Meshcheryakov

 

Tel. (812) 321-4765, Fax (812) 321-4771,

E-mail: ym38@mail.ru

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 


Team

 

 

 

 

 

Scientific directions and research tasks

 

1.             Shock-wave propagation in condensed matter.

2.             Dynamic deformation and fracture including spall and

penetration.

3.             Shock-induced structural instability, turbulence and

fragmentation of solids.

4.             Shock-induced phase transformations in solids.

5.             Creation of materials with nanostructure.

6.             Dynamic compaction of amorphous powders.

7. Development of new test techniques.

8.             Modeling of multiscale shock-wave processes in solids.

 

Experimental approaches

- Shock loading under uniaxial strain conditions

- Shock loading under uniaxial stress state

-Taylor technique

- Combined techniques

 

Equipment and diagnostics

 

       Light gas guns,

       Laser interferometry,

       PVDF and other gauges.

 

 

In-situ registered characteristics:

 

Time-resolved free surface velocity profiles Ufs(t)

 

Particle velocity variation histories D(t)

 

Defect of particle velocity ΔU = Uimp - Ufs

 

Impact velocity Uimp

 

Interference fringe signal (A), deciphered free surface velocity profile Ufs particle velocity variation D for 30Kh N4 M steel target loaded at impact velocity of 320 m/s

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 


Microstructure investigations

 

Optical, REM and TEM techniques, X-ray analysis for studying microstructural processes including:

 

Twinning, shear banding, dynamic recrystallization, spallation, crack formation, vortical structures and phase transitions

 

 

 

Research Programs and Grants.

1. Exprimental investigation of phase transitions in titanium alloys under

shock loading, State Research Program, 2003-2005 .

2. Exprimental investigation of vortical mechanism of elastic-plastic deformation under shockloading, State Research Program, 2006-2008.

3. On influence of structure transitions at the compression pulse front on the spall strength of materials

Grant of Ministry of Industry and Science of Russian Federation 40.010.11.1195:

4. On the Control of Physical Mechanisms of Structure Formation under shock loading. State Program19 PRAN 2005-2008:

5. Investigation of dynamic strength of Granite and Melted Quartz under Shock loading . Federal Research Program Physics and Mechanics of High-Compressed Matter and Inner Structure of Earth and Plnets. 2005-2007.

6. Investigation of structure formation processes under shock loading RFBR Grant 08-02-00329 .

7. Shock-induced structure formation in metals and alloys unser shock loading. RFBR Grant 08-02-00304.

8. Determination of dynamic yielding for pipe steels within strain rate range of 10 4 10 6 s-1. Research Program Magistral. 2007-2010.

 

International cooperation and contacts

 

1. Livermore Lawrence National Laboratory, USA.

Material Support Agreement number B-319757.

2. Army Research Laboratory USA. Contract DAAZ01-96-M-0141.

3. Army Research Laboratory Contract DAAL01-98-P-0796.

4. International Grant INTAS: Project INTAS 96-2141

5. International Grant WOLKVAGEN Research Project I-74-645

 

Basic publications on topic

(total number of publications 195)

 

1. .. . . // .C. , , . 1988. 3. C.101-111.

2. Yu.I. Mescheryakov and S.A. Atroshenko. Multiscale rotations in dynamically deformed solids. // Int. Journal of Solids and Structures. 1992. Vol. 29, No 22. P. 2761-2778,

3. .. , .. , .. . -28 . // . 1997,T. 68, 10. C. 43-49.

4. Yu.I. Mescheryakov E.I. Prokuratova Kinetic theory of continuously distributed dislocations. // International Journal of Solids and Structures . 1995. Vol. 32, No 12.

5. Yu.I. Mescheryakov, A.K. Divakov. Multiscale kinetics of microstructure and strain-rate dependence of materials. // Dymat Journal. 1994.Vol.1, 4. . 271-277.

6. T.A. Khantuleva ,Yu.I. Mescheryakov. Nonlocal theory of the high-strain-rate processes in structured media. // International Journal of Solids and Structures, 1999. Vol.36. P.3105- 3129.

8. .. , .. . . // . 1999, . 18, 10.

9. Yu.I. Mescheryakov. Mesoscopic effects and particle velocity distribution in shock compressed solids. Shock Compression of Condenced Matter-1999. Ed. by M.D. Furnish, L.C. Chhabildas and R.S. Nixon. AIP- Proceeding 505, Melville, New York, 1999. . 1065-1070.

10 .. , .. . . . 1999. .2. C. 5- 17.

11. Yu.I. Mescheryakov, A.K. Divakov, N.I. Zhigacheva. Shock-induced phase transformation and vortex instabilities in shock-loaded titanium alloy. Inernational Journal of Shock Waves. 2000. Vol.10, No 1. P.43-56.

12. .. , A.K. , .. , .. . . // . 1999, 5. C. 87-90.

13. Yu.I. Mescheryakov. Mesoscopic effects and particle velocity distribution in shock compressed solids. // In: Shock Compression of Condenced Matter-1999. Ed. by M.D. Furnish, L.C. Chhabildas and R.S. Nixon. AIP- Proceeding 505, Melville, New York, 1999. P.1065-1070.

14. ... . // . 2000. .19, 2. C. 44-50.

15. Yu.I. Mescheryakov, A.K. Divakov, N.I. Zhigacheva. Role of mesostructure effects in dynamic plasticity and strength of ductile steels. // Materials Physics and Mechanics. 2001. Vol. 3. P. 63-100.

15. Yu.I. Meshcheryakov, A.K. Divakov. Affect of shock-induced phase transformations on dynamic strength of titanium alloys. // International Journal of Impact Engineering. 2001. Vol. 26. P. 497-508.

16. .. , ... . // . 2001. . 42,

6. . 117-123.

17. Yu.I. Mescheryakov. Macro-meso energy exchange in dynamically deformed steels. // In: Shock Compression of Condensed Matter-2001. Ed. M.D. Furnish, N.N. Thadhani, and Y-Y. Horie. 2002. APS. Proceedings P. 267-270.

18. Yu.I. Mescheryakov. Meso-macro energy exchange in shock deformed compression of solids VI. // In: High-Pressure shock and fractured solids. Springer, 2002, P.169-213.

19. .. , .. . . // . 2002. . 38, 3. C. 113-118.

20. Yu.I. Mescheryakov, T.A. Khantuleva, A.K.Divakov. Kinetics of mesostructure and reloading behavior of dynamically compressed solid // Journal de physic. IV (France). Vol. 110. 2003. P. 905-910.

21. Yu.I. Mescheryakov. Effect of shock-induced mesoscopic processes on dynamic strength of solids. // Journ. de physic (France) 2003. Vol.110. P. 911-916.

22. Yu.I. Mescheryakov, A.K. Divakov, Yu .A. Petrov, C.F.Cline. On the dynamic plasticity and strength of polycrystalline beryllium. // Int. Journ Solids and Structures. 2004. V. 30, pp 17-29.

23. Yu.I. Mescheryakov, A.K. Divakov. Shock-induced mesoscopic processes and dynamic strength of materials. // In: Shock Compression of Condensed Matter- 2003. Ed. by M.D. Furnish, Y.M Gupta, and J.W. Forbes, American Institute of Physics Melville, New York, 2004. P.587-591.

24. A.K. Divakov, T.A. Khantuleva, Yu.I. Mescheryakov. Kinetics of mesostructure and reloading behavior of dynamically compressed solids. // In: Shock Compression of Condensed Matter- 2003. Ed. by M.D. Furnish, Y.M Gupta, and J.W. Forbes, American Institute of Physics. Melville, New York, 2004. P. 587-591.

25. Yu.I. Mescheryakov, N.I. Zhigacheva, A.K. Divakov, Yu. A. Petrov, C.F.Cline. Comparative analysis of uniaxial strain shock tests of maraging steels. // High Pressure Research . 2004. Vol. 24. P. 263-270.

26. Yu.I. Mescheryakov, A.K. Divakov, N.I. Zhigacheva. Shock-induced structural transitions and dynamic strength of solids. // Int. Journ Solids and Structures. 2004. V. 41. P. 2349-2362.

27. .. . . // . 2005. . 24. 11. C. 26-35.

28. .. . - . // . 2005. . 8. 6, C. 5-21.

29. .. . . // , . 2006. . 70, 9, .1328-1330.

30. .. , .. , .. , .. , .. . - . // , 2007. .26. 12. .57-63.

31. .. , .. , .. , .. . . // . 2007. .48, 6. .135-146.

32. .. , .. , .. , .. , .. . - .// . 2007. .10. 5. .63-69.

33. Yu.I. Mescheryakov, A.K. Divakov, N.I. Zhigacheva I.P. Makarevich, .. . Dynamic structures in shock loaded copper. // Physical Review.B 2008. Vol. 78, No 1. P. 064301-064316.

34. .. , .. , .. , .. , W.A. Gooch. . // . 2009. . 12. 6, . 41-52.

35. .. , .. , .. , .. , .. . - . // . 2009. . 8, 1. .8-31.