Abstract: Automatic machine tools have traditionally been controlled by hard-wired numerical controllers (NC). Recently, systems have been introduced which use a general purpose mini-computer (CNC). Some of ...

Abstract: A common threat to thick-walled vessels and pipes is thermal shock from operational steady state or transient thermoelastic stresses. As such, boundary conditions must be known or determined in ...

Abstract: A detailed discussion of fuel quality as related to associated fuel use problems is presented. The generic chemical solution to the problems is covered with emphasis on the correction of system ...

Abstract: A modified gradient procedure is proposed for making discrete-time changes in the adjustable parameters of a continuous-time nonlinear control system during normal operating conditions. The algorithm ...

Abstract: The present paper deals with theoretical and computational analysis of quasi-static, normal indentation of a transversely isotropic, linear elastic, piezoelectric half-space by a rigid spherical ...

Abstract: Plane-strain contact analysis is presented for compositionally graded materials with power-law strain hardening. The half-space, y ≤ 0, is modeled as an incompressible, nonlinear elastic material. ...

Abstract: The present work examines the influence of pre-existing, elastic surface stresses on instrumented sharp indentation. The surface is modeled as a homogeneous and isotropic elastoplastic solid in ...

Abstract: A series solution is available for the load capacity of a finite, rectangular, hydrodynamic bearing whose lubrication film is curved in one direction. It is shown that the even terms and the ...

Abstract: The results of conventional (Coffin-type) thermal-fatigue tests of Hastelloy N are reported. The plastic-strains induced by thermal stresses ranged from a hundred micro-units to more than ten-thousand ...