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An improved instrumented indentation technique for single microfibers

Published online by Cambridge University Press:  30 April 2014

Daniel P. Cole  and
Kenneth E. Strawhecker
Daniel P. Cole*
Affiliation:
U.S. Army Research Laboratory, Vehicle Technology Directorate, APG, Maryland 21005
Kenneth E. Strawhecker*
Affiliation:
U.S. Army Research Laboratory, Weapons and Materials Research Directorate, APG, Maryland 21005
*
a)Address all correspondence to this author. e-mail: kenneth.e.strawhecker.civ@mail.mil
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Abstract

We describe an improved experimental approach for characterizing the elastic modulus and hardness of single microfibers through instrumented indentation. A sample mounting technique on a curved surface is presented that ensures contact between an unmodified fiber and substrate. The indentation analysis considers three separate corrections to the well-known Oliver and Pharr method: (i) overestimation of the projected contact area due to sample curvature, (ii) overestimation of projected contact area due to substrate curvature, and (iii) underestimation of fiber stiffness due to the structural compliance of the sample. The method is applied to four types of high performance ballistic fibers: KM2 Plus, Twaron, AuTx, and Dyneema; the results are presented according to both the modified analyses as well as the standard Oliver and Pharr analysis. The modified analyses resulted in an increase in the elastic modulus and hardness of up to 35 and 60%, respectively, compared to the Oliver–Pharr method. The technique has the potential to be applied to single microfilaments under various environmental conditions that may otherwise be compromised by traditional fiber mounting methods.

Keywords

nanoindentationmicrofiberfiber mounting techniqueatomic force microscopeprocessing/structure/property relationship
Type
Articles
Information
Journal of Materials Research , Volume 29 , Issue 9 , 14 May 2014 , pp. 1104 - 1112
Copyright
Copyright © Materials Research Society 2014 

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References

REFERENCES

Black, W.B.: High modulus/high strength organic fibers. Annu. Rev. Mater. Sci. 10, 311 (1980).Google Scholar
Lim, J., Zheng, J.Q., Masters, K., and Chen, W.W.: Mechanical behavior of A265 single fibers. J. Mater. Sci. 45, 652 (2010).Google Scholar
Xu, T. and Farris, R.: Comparative studies of ultra high molecular weight polyethylene fiber reinforced composites. Polym. Eng. Sci. 47(10), 1544 (2007).Google Scholar
Smook, J. and Pennings, J.: Influence of draw ratio on morphological and structural changes in hot-drawing of UHMW polyethylene fibres as revealed by DSC. Colloid Polym. Sci. 262, 712 (1984).Google Scholar
Hudspeth, M., Nie, X., and Chen, W.: Dynamic failure of Dyneema SK76 single fibers under biaxial shear/tension. Polymer 53, 5568 (2012).Google Scholar
Liu, X. and Yu, W.: Evaluation of the tensile properties and thermal stability of ultrahigh-molecular-weight polyethylene fibers. J. Appl. Polym. Sci. 97, 310 (2005).Google Scholar
Schaefer, D.J., Schadt, R.J., Gardner, K.H., Gabara, V., Allen, S.R., and English, A.D.: Microscopic dynamics and macroscopic mechanical deformation of poly(p-phenyleneterephthalamide) fibers. Macromolecules 28, 1152 (1995).CrossRefGoogle Scholar
Schadt, R.J., Cain, E.J., Gardner, K.H., Gabara, V., Allen, S.R., and English, A.D.: Terephthalamide ring dynamics of poly(p-phenyleneterephthalamide). Macromolecules 26, 6503 (1993).CrossRefGoogle Scholar
Cheng, M., Chen, W., and Weerasooriya, T.: Mechanical properties of Kevlar KM2 single fiber. J. Eng. Mater. Technol. 127, 197 (2005).CrossRefGoogle Scholar
Magonov, S.N., Sheiko, S.S., Deblieck, R.A.C., and Mueller, M.: Atomic force microscopy of gel-drawn ultrahigh molecular weight polyethylene. Macromolecules 26, 1380 (1993).CrossRefGoogle Scholar
Rebouillat, S., Peng, J.C.M., and Donnet, J.B.: Surface structure of Kevlar fiber studied by atomic force microscopy and inverse gas chromatography. Polymer 40, 7341 (1999).Google Scholar
Cayer-Barrioz, J., Tonck, A., Mazuyer, D., Kapsa, P., and Chateauminois, A.: Nanoscale mechanical characterization of polymeric fibers. J. Polym. Sci., Part B: Polym. Phys. 43, 264 (2005).Google Scholar
Golovin, Y.I.: Nanoindentation and mechanical properties of solids in submicrovolumes, thin near-surface layers, and films: A review. Phys. Solid State 50(12), 2205 (2008).Google Scholar
Zhu, Y., Ke, C., and Espinosa, H.D.: Experimental techniques for the mechanical characterization of one-dimensional nanostructures. Exp. Mech. 47, 7 (2007).Google Scholar
Lonnroth, N., Muhlstein, C.L., Pantano, C., and Yue, Y.: Nanoindentation of glass wool fibers. J. Non-Cryst. Solids 354, 3887 (2008).Google Scholar
Yu, Y., Tian, G., Wang, H., Fei, B., and Wang, G.: Mechanical characterization of single bamboo fibers with nanoindentation and microtensile technique. Holzforschung 65, 113 (2011).CrossRefGoogle Scholar
McAllister, Q., Gillespie, J.W., and VanLandingham, M.R.: Nonlinear indentation of fibers. J. Mater. Res. 27(1), 197 (2012).Google Scholar
McAllister, Q., Gillespie, J.W., and VanLandingham, M.R.: Evaluation of the three-dimensional properties of Kevlar across length scales. J. Mater. Res. 27(14), 1824 (2012).Google Scholar
Jakes, J.E., Frihart, C.R., Beecher, J.F., Moon, R.J., and Stone, D.S.: Experimental method to account for structural compliance in nanoindentation measurements. J. Mater. Res. 23(4), 1113 (2008).Google Scholar
Soifer, Y.M., Verdyan, A., Kazakevich, M., and Rabkin, E.: Edge effect during nanoindentation of thin copper films. Mater. Lett. 59(11), 1434 (2005).Google Scholar
Oliver, W.C. and Pharr, G.M.: An improved technique for determining hardness and elastic modulus using load and displacement sensing indentation experiments. J. Mater. Res. 7(6), 1564 (1992).Google Scholar
Sneddon, I.N.: The relation between load and penetration in the axisymmetric Boussinesq problem for a punch of arbitrary profile. Int. J. Eng. Sci. 3, 47 (1965).CrossRefGoogle Scholar
Saha, R. and Nix, W.D.: Effects of the substrate on the determination of thin film mechanical properties by nanoindentation. Acta Mater. 50, 23 (2002).Google Scholar
Forster, A.M., Michaels, C.A., Sung, L., and Lucas, J.: Modulus and chemical mapping of multilayer coatings. ACS Appl. Mater. Interfaces 1(3), 597 (2009).Google Scholar
Shaw, G.A., Stone, D.S., Johnson, A.D., Ellis, A.B., and Crone, W.C.: Shape memory effect in nanoindentation of nickel-titanium thin films. Appl. Phys. Lett. 83, 257 (2003).Google Scholar
Cole, D.P., Jin, H., Lu, W., Roytburd, A.L., and Bruck, H.A.: Reversible nanoscale deformation in compositionally graded shape memory alloy films. Appl. Phys. Lett. 94, 193114 (2009).Google Scholar
Gerbig, Y.B., Michaels, C.A., Forster, A.M., Hettenhouser, J.W., Byrd, W.E., Morris, D.J., and Cook, R.F.: Indentation device for in situ Raman spectroscopic and optical studies. Rev. Sci. Instrum. 83, 125106 (2012).CrossRefGoogle ScholarPubMed
Cole, D.P., Bruck, H.A., and Roytburd, A.L.: Nanoindentation studies of grade shape memory alloy thin films processed using diffusion modification. J. Appl. Phys. 103, 064315 (2008).Google Scholar
Li, X., Bhushan, B., and McGinnis, P.B.: Nanoscale mechanical characterization of glass fibers. Mater. Lett. 29, 215 (1996).Google Scholar
Xu, Z. and Li, X.: Sample size effect on nanoindentation of micro-/nanostructures. Acta Mater. 54, 1699 (2006).Google Scholar
Cao, G., Chen, X., Xu, Z., and Li, X.: Measuring mechanical properties of micro- and nano-fibers embedded in an elastic substrate: Theoretical framework and experiment. Composites Part B 41, 33 (2010).Google Scholar
Han, C. and Nikolov, S.: Indentation size effects in polymers and related rotation gradients. J. Mater. Res. 22(6), 1662 (2007).Google Scholar
Stan, G., Krylyuk, S., Davydov, A.V., Vaudin, M., Bendersky, L.A., and Cook, R.F.: Surface effects on the elastic modulus of Te nanowires. Appl. Phys. Lett. 92, 241908 (2008).Google Scholar
Tan, E.P.S. and Lim, C.T.: Nanoindentation study of nanofibers. Appl. Phys. Lett. 87, 123106 (2005).Google Scholar
Li, X. and . Bhushan, B: A review of nanoindentation continuous stiffness measurement technique and its applications. Mater. Charact. 48, 11 (2002).Google Scholar
Singletary, J., Davis, H., Ramasubramanian, M.K., Knoff, W., and Toney, M.: The transverse compression of PPTA fibers. Part II: Fiber transverse structure. J. Mater. Sci. 35, 583 (2000).Google Scholar
Hearle, J.W.S.: High-performance Fibres, 1st ed. (Woodhead Publishing, Cambridge, England, 2001), p. 73.Google Scholar