"This paper concentrates on the interfacial fracture energy or bond strength of laser deposited HI3 tool steel cladding/substrate system. For this four point bend test based on linear elastic fracture mechanics (LFEM) was carried out. Strain energy release rate, Gss which is closely related to bond strength of the interfacial region and the stress intensity factor, Kc were computed for this particular cladding/substrate system. In order to study the propagation of cracks during de-lamination of clad layer from substrate, optical and SEM graphs of the samples were taken. For laser clad HI3 tool steel clad/substrate system the fracture energy release rate, Gss and the stress intensity factor or fracture toughness, Kc of interface found to be 1.37*E+04 J/m2 and 39.8 MPam1/2 respectively. Such a high value of fracture energy obtained in the present study is an indicative of a strong cladding/substrate interface. Fracture energy or bonding strength for the laser cladded system is compared with similar weld cladded structures, to substantiate the advantage of laser cladding process in part repairing technology"--Abstract, page iv.
Liou, Frank W.
Newkirk, Joseph William
Mechanical and Aerospace Engineering
Ph. D. in Manufacturing Engineering
University of Missouri--Rolla
viii, 17 pages
© 2005 Hari Janardanan Nair, All rights reserved.
Dissertation - Restricted Access
Metal cladding -- Reliability
Laser beams -- Industrial applications
Strength of materials -- Evaluation
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Electronic access to the full-text of this document is restricted to Missouri S&T users. Otherwise, request this publication directly from Missouri S&T Library or contact your local library.http://merlin.lib.umsystem.edu/record=b5771941~S5
Nair, Hari Janardanan, "Interfacial fracture energy (bonding strength) of laser deposited H13 tool steel on H13 tool steel substrate using four point bend test" (2005). Doctoral Dissertations. 1656.
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