... heat transfer weapons wear cook-off gun barrel wear finite element method temperature history During firing, gun barrels are subjected to a large amount of heat input at the bore surface. Heat transfer is mostly due to forced convection from the hot combustion gases generated inside...

... stresses iterative methods pipes weapons wear The optimal design of gun barrels has two major goals: (a) to increase the strength-to-weight ratio of the barrel and (b) to prolong the barrel’s total fatigue life. Both goals can be simultaneously achieved by introducing a favorable residual...

... 2007 12 06 2008 backpropagation Bayes methods function approximation heat conduction Hopfield neural nets mechanical engineering computing temperature distribution thermomechanical treatment weapons wear neural network inverse heat conduction problems (IHCPs) gun barrel...

... proved the system to be more than able to cope with the required rate of heat extraction from the barrel. The system has the potential to be reduced in size, thus enabling it to be integrated with typical artillery weapon platforms. It takes about 12 h for a barrel that has reached...

... and more sustained combustion gas temperatures in today's cannons, cannon bore cracks are now often the primary control of erosion and the primary cause of greatly reduced cannon service life. weapons thermomechanical treatment thermal stress cracking thermal expansion internal stresses...

... (inner tube) prior to assembly with the sleeve (outer tube). wear pipes weapons stress analysis finite element analysis tolerance analysis machining cooling 2006 American Society of Mechanical Engineers ...

...Andrew Littlefield; Edward Hyland; Andrew Andalora; Nathaniel Klein; Robert Langone; Robert Becker The emphasis on lightweight large-caliber weapons systems has placed the focus on the use of advanced composite materials. Using composite materials not only directly removes weight from the gun tube...

...Tony D. Andrews; Fred E. Brine This paper describes a range of hydraulic fatigue and pressure tests carried out on gun barrels and ordnance components in support of weapons research and development programs. Cyclic testing of representative sections of large caliber guns has been routinely carried...

... Laboratory Technical Report No. AFATL-TR-73-10, Eglin Air Force Base, FL. Fischman , S. , and Palmer , C. , 1975 , “ The Design and Fabrication of a Ceramic-Lined Gun Barrel Insert ,” Naval Surface Weapons Center/Dahlgren Laboratory Technical Report No. TR-3342, Dahlgren, VA. D’Andrea...

.... sputtered coatings electroplating chromium wear tantalum microhardness adhesion thermal stability weapons oxidation 01 12 2005 21 12 2005 The failure modes of several samples are illustrated in Fig. 8 . The plan view images illustrate two adjacent grooves running vertically...

... development and validation of a finite element (FE) procedure. work hardening wear Bauschinger effect weapons fatigue tensile strength compressive strength finite element analysis pressure vessels 05 12 2005 19 12 2005 2006 American Society of Mechanical Engineers ...

... to the interaction between gas pressure, projectile velocity, and wall thickness and help to reduce the weight of the barrel. 07 12 2005 16 12 2005 brakes pipes projectiles weapons A gun barrel for a modern tank gun is not only highly strained in the chamber area due to the high gas...

... of the gases and the thermo-mechanical stresses resulting from thermal flash. The application presented concerns the 120 mm gun barrel. crack-edge stress field analysis microcracks internal stresses thermomechanical treatment thermal stresses wear weapons plasticity surface cracks 06...

... and Piping Division for publication in the JOURNAL OF PRESSURE VESSEL TECHNOLOGY . Manuscript received by the PVP Division March 14, 2003; revision received May 6, 2003. Associate Editor: M. Perl. 14 March 2003 06 May 2003 01 08 2003 weapons seals (stoppers) pressure vessels...

... in the barrel wall, a process known as autofrettage. weapons elastoplasticity internal stresses stress-strain relations fatigue testing wear work hardening optimisation Bauschinger effect finite difference methods 12 March 2003 06 May 2003 01 08 2003 Contributed...

... compressive stresses are explained using dilatometry data and are shown to be consistent with the observed damage processes. pressure vessels laser beam effects plastic deformation cracks fracture cavitation superplasticity X-ray diffraction thermomechanical treatment weapons internal stresses...

.... Associate Editor: M Perl. 12 March 2003 23 April 2003 01 08 2003 weapons heat transfer wear fatigue ignition fluctuations The paper describes work carried out to support the assessment of new ammunition for the 155 mm, 52 calibers AS90 extended range ordnance...

... VESSEL TECHNOLOGY . Manuscript received by the PVP Division May 12, 2003; revision received May 12, 2003. Associate Editor: M. Perl. 12 May 2003 12 May 2003 01 08 2003 steel chromium weapons thermal barrier coatings combustion explosion protection thermomechanical...

... April 2003 06 May 2003 01 08 2003 weapons critical phenomena fracture toughness elastoplasticity Bauschinger effect tensile strength thermal barrier coatings fatigue cracks steel An interesting variety of fracture processes has been observed in US Army cannons during...

... March 13, 2003; revision received May 6, 2003. Associate Editor: M. Perl. 13 March 2003 06 May 2003 01 08 2003 weapons internal stresses stress-strain relations yield stress machining finite element analysis yield strength Bauschinger effect wear elastoplasticity...