Solution of the converse thermal conductivity problem with consideration of the perturbing influence of the thermocouple

Questions involving the use of an adequate model for temperature measurement in solving converse thermal conductivity problems are considered.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 52, No. 1, pp. 131–134, January, 1987.     

Identification of the parameters in equivalent thermal circuits of electric motors in the nonsteady regime

We have used the solution of the inverse problem to determine the causal characteristics of the heat-transfer process in electric motors.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 56, No. 4, pp. 657–662, April, 1989.     

Optimization of thermocouple installation for study of intense transient thermal actions on materials

A method is proposed for determination of the optimum variant of thermocouple installation to reduce measurement error for the case of individual electrode welding.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 55, No. 1, pp. 130–135, July, 1988.     

Two-model iteration method for the solution of an inverse boundary heat-exchange problem

A method is proposed for restoration of the boundary condition, with an iterative correction of the initial data used in this method, involving the utilization of both exact and approximate heat-transfer models.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 56, No. 2, pp. 313–319, February, 1989.     

Reconstruction of causal characteristics of the thermal conductivity process from the solution of the combined inverse problem

An algorithm is suggested for solving the combined inverse problem of heat exchange on the basis of using uniqueness theorems.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 52, No.5, pp. 839–844, May, 1987.     

Identification of heat transfer between the casting and the mold in ingotless rolling

A method is proposed for determining the heat flux inside a roll-mold on the basis of solution of the inverse heat-conduction problem by the gradient method.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 57, No. 1, pp. 114–119, July, 1989.     

Effect of uncertainty in coordinates of thermocouple location on the quality of solution of the boundary-layer inverse problem of heat exchange

The dependence of the reconstruction error of the thermal flux density on the boundary of a body on the accuracy of given coordinates of a temperature detector located inside the object is investigated.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 52, No. 4, pp. 650–654, April, 1987.     

Procedure and Results of Investigation into Fatigue Strength Characteristics of Motorcycle Engine Crankshafts

We present a procedure of studying the fatigue strength of crankshafts of a two-cylinder motorcycle engine. The use of a unique loading scheme provided obtaining patterns of in-service fracture of the tested crankshafts. The results of comparative fatigue tests of some series of crankshafts of various design and technological versions, namely, nonhardened crankshafts with a fillet and hardened and nonhardened crankshafts without a fillet (zero fillet) are given and analyzed.     

A two-model iteration algorithm for solving the inverse boundary-value problem of heat conduction

A method is proposed for restoring the heat flux density on the boundary of a body which consists of the sequential solution of the direct problem for an adequate complex model and the invserse problem for a simplified heat transmission model.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 53, No. 6, pp. 1014–1020, December, 1987.