Observation of cracking and measurement of fracture toughness in graphite
Source abstract
Abstract
The dominant mechanical failure mechanism in brittle or quasi-brittle materials is cracking, and the parameters that characterize the fracture process of a given material are the extension of cracked region as a function of externally applied load and the resistance of the deforming material to the advance of cracking, also known as fracture toughness. In the present investigation we develop and demonstrate a technique for observing and studying the process of macroscopic crack initiation and propagation, and for determining the fracture toughness of the brittle or quasi-brittle materials. We will address issues such as specimen design using only small amount of material, loading configuration that can generate stable crack growth in brittle solids, diagnostics for identifying crack initiation and quantifying the extent of crack growth, and scheme for extracting the stress intensity factor at the tip of a growing crack. The technique described is applied to the brittle material graphite.
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Research context
OpenAlex topics: Graphite, nuclear technology, radiation studies · Ultrasonics and Acoustic Wave Propagation · Non-Destructive Testing Techniques
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (21)
Show source-provided references
1. Addessio F, Mohan N, Luscher D, Morrow B, Cawkwell M, Liu C, Meredith C, Ramos K (2020) A single-crystal model for the deformation of cyclotrimethylene trinitramine including plastic slip, crack growth and crack friction. Los Alamos National Laboratory Report, LA-UR-20-21101. Submitted to J Appl Phys
2. Dondeti S, Tippur H (2020) A comparative study of dynamic fracture of soda-lime glass using photoelasticity, digital image correlation and digital gradient sensing techniques. Exp Mech 60:217–23310.1007/s11340-019-00549-5 ↗
3. Liu C, Thompson D (2012) Deformation and failure of a heterogeneous high explosive. Philos Mag Lett 92:352–36110.1080/09500839.2012.673021 ↗
4. Liu C, Thompson D (2014) Crack initiation and growth in PBX 9502 high explosive subject to compression. J Appl Mech 81:10100410.1115/1.4028087 ↗
5. Liu C, Thompson D (2015) Mechanical response and failure of high performance propellant (HPP) subject to uniaxial tension. Mech Time-Depend Mater 19:95–11510.1007/s11043-015-9254-z ↗
6. Liu C, Thompson D, Lovato M, Deluca R (2010) Macroscopic crack formation and extension in pristine and artificially aged PBX 9501. In: Proceedings of the 14th international detonation symposium, Coeur d’Alene
7. Liu C, Rae P, Cady C, Lovato M (2011) Damage & fracture of high-explosive mock subject to cyclic loading. In: Proulx T (ed) Mechanics of time-dependent materials and processes in conventional and multifunctional materials, vol 3. Conference proceedings of the society for experimental mechanics series. Springer, New York10.1007/978-1-4614-0213-8_23 ↗
8. Liu C, Cady C, Ramos K (2018a) Fracture toughness measurement of PBX 9502 high explosive. In: Proceedings of the 16th international detonation symposium, Cambridge, pp 226–235
9. Liu C, Cady C, Ramos K (2018b) Quantitative investigation of fracture process in brittle/quasi-brittle solids. In: Proceedings of the 16th international detonation symposium, Cambridge, pp 1614–1623
10. Liu C, Meredith C, Morrow B, Cady C, Ramos K (2019a) Dynamic deformation of RDX single crystal using miniature SHPB and high-speed photography. In: Conference proceedings of the society for experimental mechanics series, Reno, pp 143–14810.1007/978-3-030-30021-0_25 ↗
11. Liu C, Thompson D, Woznick C, Yeager J, Duque A, DeLuca R (2019b) PBX 9501 versus a new thermomechanical density mock: Brazilian disk compression test comparison. In: AIP Conference proceedings, the 21st biennial APS shock compression of condensed matter (SCCM) conference, Portland10.1063/12.0000790 ↗
12. Muskhelishvili N (1953) Some basic problems in the mathematical theory of elasticity. Noordhoff, Groningen
13. Pan B (2011) Recent progress in digital image correlation. Exp Mech 51:1223–123510.1007/s11340-010-9418-3 ↗
14. Plaisted T, Amirkhizi A, Nemat-Nasser S (2006) Compression-induced axial crack propagation in DCDC polymer samples: Experiments and modeling. Int J Fracture 141:447–45710.1007/s10704-006-9006-9 ↗
15. Rice J (1968) Mathematical analysis in the mechanics of fracture, vol 2. Academic Press, New York, pp 191–308
16. Sammis C, Ashby M (1986) The failure of brittle porous solids under compressive stress states. Acta Metall 34:511–52610.1016/0001-6160(86)90087-8 ↗
17. Sundaram B, Tippur H (2018) Dynamic fracture of soda-lime glass: a full-field optical investigation of crack initiation, propagation and branching. J Mech Phys Solids 120:132–15310.1016/j.jmps.2018.04.010 ↗
18. Sutton M, McNeill S, Helm J, Chao Y (2000) Advances in two-dimensional and three-dimensional computer vision. Top Appl Phys 77:323–37210.1007/3-540-48800-6_10 ↗
19. Sutton M, Orteu J, Schreier H (2009) Image correlation for shapes, motion, and deformation measurement: basic concepts. Theory and applications. Springer, New York
20. Tippur H, Krishnaswamy S, Rosakis A (1991) Optical mapping of crack tip deformation using the methods of transmission and reflection coherent gradient sensing: a study of crack tip $$K$$-dominance. Int J Fracture 52:91–11710.1007/BF00032372 ↗
21. Yeager J, Woznick C, Thompsonand D, Duqueand A, Liu C, Burch A, Bowden P, Shorty M, Bahr D (2018) Development of a new density and mechanical mock for HMX. In: Proceedings of the 16th international detonation symposium, Cambridge, pp 1631–1641