caa a22 4500 46322843X CHVBK 20180405153234.0 cr unu---uuuuu 170326e20070901xx s 000 0 eng 10.1007/s10853-007-1840-2 doi (NATIONALLICENCE)springer-10.1007/s10853-007-1840-2 Thermal stresses in aluminum 6061 and nylon 66 long fiber thermoplastic (LFT) composite joint in a tailcone [Elektronische Daten] [Rahul Kulkarni, Krishan Chawla, Uday Vaidya, James Sands] The present paper involves a metal/polymer joint in a tailcone in a kinetic energy penetrator (KEP), one of the ammunition types used by the military. It is currently made of aluminum 7075 alloy, which could be partly replaced by long fiber thermoplastic (LFT) composite. Two different types of aluminum insert geometries were considered, viz., beaded and threaded. Thermal stresses set in during cooling of the tailcone from the processing temperature mainly because of the difference in the values of coefficients of thermal expansion and differential cooling between the aluminum and the LFT composite. Finite element (FE) modeling was done to predict the temperature profile during the cooling of the tailcone from the processing temperature. FE results showed that the LFT composite part of the tailcone cooled faster than the aluminum insert. Experimental verification of this temperature profile was obtained by infrared (IR) thermography. Based on the temperature profile, thermal stresses at the metal/LFT composite interface were estimated using an FE model. Different magnitudes of thermal stresses were present at the aluminum/LFT composite interface owing to the nature of distribution of fibers around the insert. Magnitude of thermal stresses in the case of a beaded insert was approximately 2.5MPa whereas in the case of a threaded insert, it was approximately 12MPa. Springer Science+Business Media, LLC, 2007 Kulkarni Rahul Department of Materials Science and Engineering, The University of Alabama at Birmingham, 1530 3rd Ave S, BEC 254, 35294, Birmingham, AL, USA aut Chawla Krishan Department of Materials Science and Engineering, The University of Alabama at Birmingham, 1530 3rd Ave S, BEC 254, 35294, Birmingham, AL, USA aut Vaidya Uday Department of Materials Science and Engineering, The University of Alabama at Birmingham, 1530 3rd Ave S, BEC 254, 35294, Birmingham, AL, USA aut Sands James Army Research Labs, 4600 Deer Creek Loop, 21005, Aberdeen Proving Grounds, MD, USA aut Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/17(2007-09-01), 7389-7396 0022-2461 42:17<7389 2007 42 10853 https://doi.org/10.1007/s10853-007-1840-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-007-1840-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kulkarni Rahul Department of Materials Science and Engineering, The University of Alabama at Birmingham, 1530 3rd Ave S, BEC 254, 35294, Birmingham, AL, USA aut NATIONALLICENCE 700 1- Chawla Krishan Department of Materials Science and Engineering, The University of Alabama at Birmingham, 1530 3rd Ave S, BEC 254, 35294, Birmingham, AL, USA aut NATIONALLICENCE 700 1- Vaidya Uday Department of Materials Science and Engineering, The University of Alabama at Birmingham, 1530 3rd Ave S, BEC 254, 35294, Birmingham, AL, USA aut NATIONALLICENCE 700 1- Sands James Army Research Labs, 4600 Deer Creek Loop, 21005, Aberdeen Proving Grounds, MD, USA aut NATIONALLICENCE 773 0- Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/17(2007-09-01), 7389-7396 0022-2461 42:17<7389 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer