Structural Engineering and Mechanics

  • 제23권6호
  • /
  • Pages.651-674
  • /
  • 2006
  • /
  • 1225-4568(pISSN)
  • /
  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Fatigue crack growth and remaining life estimation of AVLB components

  • Chen, Hung-Liang Roger (Department of Civil & Environmental Engineering, West Virginia University) ;
  • Choi, Jeong-Hoon (Department of Civil & Environmental Engineering, West Virginia University)
  • 투고 : 2005.11.09
  • 심사 : 2006.04.06
  • 발행 : 2006.08.20
⟨ 이전 논문 다음 논문 ⟩

초록

The fatigue cracks initiate and propagate in the Armored Vehicle Launch Bridge (AVLB) components, especially like the splice doubler angle, splice plate, and bottom chord, due to the cyclic loading by repeated AVLB-launchings and tank-crossings. In this study, laboratory fatigue tests were conducted on six aluminum 2014-T6, four aluminum 7050-T76511, and four ASTM A36 steel compact-tension specimens to evaluate the crack growth behavior of the materials used for the components. The experimental results provide the relationship (Paris Law) between crack growth rate, da/dn, and stress intensity range, ${\Delta}K$, whose material dependent constants C and m can later be used in the life estimation of the components. Finite Element Method (FEM) was used to obtain the stress intensity factor, K, of the components with cracks. Because of the complexity of loading conditions and component geometry, several assumptions and simplifications are made in the FEM modeling. The FEM results, along with the results obtained from laboratory fatigue tests, are then utilized to estimate critical crack length and remaining life of the components.

키워드

참고문헌

  1. ASM HANDBOOK (1990), Properties and Selection: Nonferrous Alloys and Special-Purpose Materials, 2, ASM International
  2. Barsom, J.M. (1971), 'Fatigue-crack propagation in steels of various yield strengths', Transactions of the ASME, J. of Engineering for Industry, Series B., 93(4), November
  3. Barsoum, R.S. (1976), 'On the use of isoparametric finite elements in linear fracture mechanics', Int. J. Numer. Meth. Eng., 10, 25-37 https://doi.org/10.1002/nme.1620100103
  4. Chen, H.L. and Choi, J.H. (2004), 'Acoustic emission study of fatigue cracks in materials used for AVLB', J. of Nondestructive Evaluation, 23(4), 133-151 https://doi.org/10.1007/s10921-004-0820-6
  5. Chen, H.L. and Fultineer, R.D. (1996), 'Study of fatigue cracks in steel bridge components using acoustic emission', Structural Materials Technology, An NDT Conference, 317-322
  6. Cho, N.K. (1994), Final Report Preproduction Qualification Test (PPQT) of the Amored Vehicle Launch Bridge (AVLB) MLC 70 Upgrade Program, Report No. CSTA-7567, U. S. Army Combat System Test Activity, Aberdeen Providing Ground, MD
  7. Choi, J.H. (2000), 'The fracture analysis and remaining life estimation of the AVLB sub-components', Master Thesis, West Virginia University, Morgantown
  8. Clark, Jr. W.G. and Wessel, E.T. (1967), 'Interpretation of the fracture behavior of 5456-H321 aluminum with WOL toughness specimens', Scientific Paper 67-1D6-BTLFR-P4, Westinghouse Research Laboratory, Pittsburgh
  9. Crooker, T.W. (1971), 'Crack propagation in aluminum alloys under high-amplitude cyclic load', Naval Research Laboratory Report 7286, Washington, D. C
  10. Dennis, K.R. (1986), 'Fatigue crack growth of gun tube steel under spectrum load', Master Thesis, Virginia Polytechnic Institute and State University, Blacksburg, VA
  11. Department of the Army (1990), Technical Manual: Operator s Unit Direct Support and General Support Maintenance for Bridge. Armored Vehicle Launched: Scissoring Type; Class 60 and Class 70 Aluminum; 60 Foot Span; for M48A5 and M60 Launcher, MLC60 and MLC70, Report No. TM 5-5420-203-14, Headquarters, Department of the Army, Washington, D.C
  12. Dhondt, G. (2005), 'Cyclic crack propagation at comers and holes', Fatigue & Fracture of Engineering Materials & Structures, 28(1-2), 25-30 https://doi.org/10.1111/j.1460-2695.2004.00852.x
  13. Dowling, N.E. (1999), Mechanical Behavior of Materials: Engineering Methods of Deformation, Fracture, and Fatigue, 2nd ed., Prentice Hall, Upper Saddle River, New Jersey
  14. Gan, D. and Weertman, J. (1981), 'Crack closure and crack propagation rates in 7050 aluminum', Engineering Fracture Mechanics, 15, 87-106 https://doi.org/10.1016/0013-7944(81)90108-9
  15. Hamstad, M.A. and McColskey, J.D. (1999), 'Detectability of slow crack growth in bridge steels by acoustic emission', Material Evaluation, 57(11), 1165-1174
  16. Heo, S.P. and Yang, W.H. (2002), 'Prediction of fatigue crack growth path in mechanical joints using a weight function approach', Fatigue & Fracture of Engineering Materials & Structures, 25(10), 985-991 https://doi.org/10.1046/j.1460-2695.2002.00538.x
  17. Iyer, K., Hu, S.J., Brittman, F.L., Wang, P.C., Hayden, D.B. and Marin, S.P. (2005), 'Fatigue of single- and double-rivet self-piercing riveted lap joints', Fatigue & Fracture of Engineering Materials & Structures, 28(11), 997-1007 https://doi.org/10.1111/j.1460-2695.2005.00938.x
  18. James, L.A. (1972), 'The effect of elevated temperature upon the fatigue-crack propagation behavior of two austenitic stainless steels', in Mechanical Behavior of Materials, Vol. III, The Society of Materials Science, Tokyo, Japan
  19. Kermanidis, AL. TH. and Pantelakis, SP. G. (2001), 'Fatigue crack growth analysis of 2024 T3 aluminium specimens under aircraft service spectra', Fatigue & Fracture of Engineering Materials & Structures, 24(10), 699-710 https://doi.org/10.1046/j.1460-2695.2001.00435.x
  20. Kim, K. and Mubeen, A. (1981), 'Relation between differential stress intensity factor and crack growth rate in cyclic tension in westerly granite', Fracture Mechanics Methods for Ceramics, Rocks, and Concrete, ASTM STP 745, Am. Soc. For Testing and Materials, Philadelphia, PA, 157-168
  21. Parry, M., Nordberg, H. and Hertzberg, R.W, (1972), 'Fatigue crack propagation in A514 base plate and welded joints', Welding J., 51(10), October
  22. Rice, J.R. (1966), 'A path independent integral and the approximate analysis of strain concentration by notches and cracks', J. Appl. Mech., 35, 379-386
  23. Roessle, M.L. and Fatemi, A. (2000), 'Strain-controlled fatigue properties of steels and some simple approximations', Int. J. Fatigue, 22(6), 495-511 https://doi.org/10.1016/S0142-1123(00)00026-8
  24. Rolfe, S.T. and Barsom, J.M. (1977), Fracture and Fatigue Control in Structures: Applications of Fracture Mechanics, Prentice-Hall Inc., Englewood Cliffs, New Jersey
  25. Shih, C.F., Moran, B. and Nakamura, T. (1986), 'Energy release rate along a three-dimensional crack front in a thermally stressed body', Int. J. Fracture, 30, 79-102

피인용 문헌

  1. Determination of the value of stress intensity factor in fatigue life of steel military bridges vol.19, pp.8, 2015, https://doi.org/10.1080/19648189.2014.992549
  2. The influence of a cracking mode on fatigue crack propagation in steel girders in military bridges vol.20, pp.1, 2016, https://doi.org/10.1080/19648189.2014.992550