Abstract
Hydraulic autofrettage is a sophisticated metal forming approach adopted to strengthen the large caliber gun barrel in defense industries. During the process, the barrel bore is pressurized by hydraulic fluid causing plastic deformation at the bore surface and some portion in its neighborhood. The subsequent depressurization induces compressive residual stresses at the inner bore layer enabling the barrel to sustain increased service pressure and fatigue life. The residual compressive stresses at the inner side of the monobloc barrel also increase the stress corrosion cracking resistance. The performance of hydraulic autofrettage depends on several factors, which need to be taken care of during its operation. The primary focus of this chapter is to discuss the practical procedure of the process performed for a real gun barrel. The critical issues associated with practicing the process and the challenges are also addressed.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Similar content being viewed by others
References
Dixit, U. S., Kamal, S. M., & Shufen, R. (2020). Autofrettage processes: Technology and modeling. CRC Press.
Shufen, R., & Dixit, U. S. (2018). A review of theoretical and experimental research on various autofrettage processes. ASME. Journal of Pressure Vessel Technology, 140(5), 050802.
Jacob, L. (1907). La Résistance et L’équilibre Elastique des Tubes Frettés. Mémoire de L’artillerie Navale, 1(5), 43–155. (in French).
Davidson, T. E., Barton, C. S., Reiner, A. N., & Kendall, D. P. (1962). New approach to the autofrettage of high-strength cylinders. Experimental Mechanics, 2, 33–40.
Ezra, A., Glick, H., Howell, W., & Kaplan, M. (1973). Method and apparatus for explosive autofrettage. U.S. Patent No. 3,751,954.
Kamal, S. M., & Dixit, U. S. (2015). Feasibility study of thermal autofrettage of thick-walled cylinders. ASME Journal of Pressure Vessel Technology, 137(6), 061207–1−061207–18
Kamal, S. M., Borsaikia, A. C., & Dixit, U. S. (2016). Experimental assessment of residual stresses induced by the thermal autofrettage of thick-walled cylinders. The Journal of Strain Analysis for Engineering Design, 51(2), 144–160.
Zare, H. R., & Darijani, H. (2016). A novel autofrettage method for strengthening and design of thick-walled cylinders. Materials and Design, 105, 366–374.
Kamal, S. M., Perl, M., & Bharali, D. (2019). Generalized plane strain study of rotational autofrettage of thick-walled cylinders- Part I: Theoretical analysis. ASME Journal of Pressure Vessel Technology, 141(5), 051201–1–051201–11.
Roy, A. K., Kulkarni, R., & Madas, S. (2018, June 8–9). A hydraulic autofrettage process of large calibre gun barrel. National conference on advances in armament technology.
Moss, L.T.J. (1958). The design of gun barrels, A description of the working method, Part 2: Design of Monobloc autofrettaged barrel. ARDE Report.
Macrae, A.E. (1930). Over strain of metals and its application to autofrettage process of cylinder and gun construction, His Majesty’s Stationary Office.
Inspection instruction ‘Autofrettage’ issued by inspectorate of armaments, Woolwich. (1955).
Manning, W.R.D., & Labrow, S. (1971). High pressure engineering. Leonard Hill.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2023 The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.
About this chapter
Cite this chapter
Roy, A.K., Kamal, S.M., Patil, R.U., Rao, V.V. (2023). Practicing Hydraulic Autofrettage for Strengthening a Gun Barrel: Critical Issues and Challenges. In: Dixit, U.S., Echempati, R., Dey, S. (eds) Engineering Pedagogy. Springer, Singapore. https://doi.org/10.1007/978-981-19-8016-9_13
Download citation
DOI: https://doi.org/10.1007/978-981-19-8016-9_13
Published:
Publisher Name: Springer, Singapore
Print ISBN: 978-981-19-8015-2
Online ISBN: 978-981-19-8016-9
eBook Packages: EducationEducation (R0)