Abstract
The response of composite T-joint specimens to hydrodynamic ram testing is investigated in this study. A hydrodynamic ram is one of the major manmade threats to aircraft structures, particularly to fuel systems, which are the most vulnerable to ballistic battle damage. As composite materials are increasingly being used in aircraft structures, survivability-enhanced structural designs, particularly in composite fuel tanks, have become one of the key elements in aircraft development. Composite bonded/bolted laminate and sandwich specimens are selected and instrumented from the consideration of the joint parts of the aircraft, and a hydrodynamic ram gun simulator is used to propagate the ram pressure toward the specimens. A shorting pin device and a high-speed camera with lighting are used to support the data measurement. A total of nine tests are conducted, and the pressure, strain, deformation data are investigated to characterize the composite specimens subject to hydrodynamic ram. Based on the test results and a further comparison with a previously conducted metallic specimen test, composite T-joint concepts to hydrodynamic ram are evaluated.
Similar content being viewed by others
References
Gonzalez M, Sparks C, Kubes C, Girard W (2008) Comparison of the tumbling behavior and pressure evolution of several API projectiles in a hydrodynamic ram environment. In: 49th AIAA/ASME/ASCE/AHS/ASC structures, structural dynamics, and materials conference, Schaumburg AIAA 2008-1965, pp 1–15. https://doi.org/10.2514/6.2008-1965
Weisenabach M, Kurtz A, Czarnecki G (2005) Update on the joint aircraft survivability. In: 49th AIAA/ASME/ASCE/AHS/ASC structures, structural dynamics, and materials conference, Austin, Texas AIAA 2005-2330, pp 1–4. https://doi.org/10.2514/6.2005-2330
Kim J, Jun S (2006) Battle damage analysis of aircraft wing fuel tanks by hydrodynamic ram effect. J Korean Soc Aeronaut Space Sci 34(4):17–24
Seo B (2018) Investigation of hydrodynamic ram behavior using newly established hram gun system. Int J Aeronaut Space Sci 19:855–862. https://doi.org/10.1007/s42405-018-0090-7
Czarnecki G, Maxson M, Sawdy J, Miller M, Hinrichsen R (2006) Evaluation of skin spar joint resistance to hydrodynamic ram. In: Air Force Material Command Public Affairs Office, AFRLWS-WP-TR-2007-9002
Varas D, Zaera R, Lopez-Puente J (2011) Experimental study of CFRP fluid-filled tubes subjected to high-velocity impact. Compos Struct 93:2598–2609
Heimbs S, Nogueira A, Hombergsmeier E, May M, Wolfrum J (2014) Failure behavior of composite T-joints with novel metallic arrow-pin reinforcement. Compos Struct 110:16–28
Go ES, Kim IG, Kim DG, Woo KS, Kim JH (2017) Failure behavior of a composite T-joint subjected to hydrodynamic ram. J Mech Sci Technol 31(9):4085–4091
Bae HS, Woo KS, Go ES, Kim IG (2020) Dynamic behavior of composite joints in hydrodynamic ram simulator. J Mech Sci Technol 34(1):245–257
Author information
Authors and Affiliations
Corresponding author
Additional information
Publisher's Note
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Rights and permissions
About this article
Cite this article
Kim, J.H., Seo, B. Hydrodynamic Ram Test of Composite T-Joint Structure. Int. J. Aeronaut. Space Sci. 22, 834–844 (2021). https://doi.org/10.1007/s42405-021-00377-9
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s42405-021-00377-9