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acta mechanica et automatica, vol.5 no.3 (2011) CONTENTS Jan Bartoszewicz, Andrzej Seweryn Workstand for Research of Aluminium Alloys Mechanical Properties in Elevated Tempereatures .......................... 5 Bartłomiej Będkowski, Jerzy Madej The Optimization of the Workplace with the Use of Reverse Engineering (RE) ........................................................ 10 Łukasz Blacha, Aleksander Karolczuk, Robert Bański, Przemysław Stasiuk Experimental Study of Fatigue Life of Cruciform Welded Joints with Reference to Scale Effect ............................. 16 Kira Chiżniak, Małgorzata Grądzka-Dahlke Application of the Theory of Elastohydrodynamic Lubrication to the Evaluation of the Lubrication Conditions in Hip-Joint Endoprostheses with a Porous Acetabulum .......................................................................................... 21 Artur Ganczarski, Jacek Skrzypek Modeling of Limit Surfaces for Transversely Isotropic Composite SCS-6/Ti-15-3 ................................................... 25 Marcin Graba Application of the FITNET Procedures for Evaluation of the Strength Fragments Pipeline with Surface Defects ... 33 Marcin Graba Experimental–Numerical Analysis of the Fracture Process for Ferritic Steel 13HMF ............................................ 41 Aleksander Karolczuk, Łukasz Blacha Application of the Weakest Link Concept to Fatigue Analysis of Welded Joints ....................................................... 51 Dominik Kukla, Lech Dietrich, Marcin Ciesielski Evaluation of Steam Pipeline Material Degradation Using Analysis of Microstructure and Fatigue Properties Changes ............................................................................................................................... 55 Marta Kurek, Tadeusz Łagoda Fatigue Life Assessment for the Materials With out-of Parallel Fatigue Characteristics under Cyclic Loading ..... 61 Janusz Kwaśniewski, Ireneusz Dominik Laboratory Research on Mechanical Features of Ionic Polymer Metal Composite IPMC ....................................... 65 Paweł Lindstedt, Karol Golak Rationale for a Comprehensive Parametric Assessment of Turbojet Engine Adjustment .......................................... 73 Paweł Lindstedt, Rafał Grądzki Changes the Environment Represented by Rotating Speed for Models Parameters in Diagnose Working Turbomachine Blade with Elimination of its Distributed Environment ..................................................................... 78 Jerzy Madej, Marek Sitek Modal and Frequancy Analysis Kit Electrovibrator for Different Configuration of Activators ................................ 87 Krzysztof Michalczyk, Bogdan Sapiński, Zbigniew Szydło Structural Analysis of a Generator Supplying a Linear Magnetorheological Damper in a Self–Powered Vibration Reduction System ........................................................................................................ 91 Stanisław Mroziński, Józef Szala Problem of Cyclic Hardening or Softening in Metals under Programmed Loading ................................................. 99 Jacek Mucha The Effect of Rectangle Clinching Joint's Load Direction on its Strength in the Shear Test .................................... 108 Jacek Snamina Forced Vibration of Rectangular Plate with Magnetorheological Fluid Core ......................................................... 113 157 acta mechanica et automatica, vol.5 no.3 (2011) Barbara Surowska, Karolina Beer, Jarosław Bieniaś Effect of Recycling on Structure and Mechanical Properties of Dental Casting Cobalt Alloy 119 Tomasz J. Teleszewski, Sławomir A. Sorko Implementation of the Boundary Element Method for the Solution of Unidirectional Flow Through Straight Pipes of Arbitrary Cross-Section Shapes .................................................................................................................. 124 Karolina Walat, Tadeusz Łagoda Determination of Fatigue Life of the Aluminium Alloy Under Complex Loadings and Low-Cycle Fatigue ............. 132 Grzegorz Wołkowycki Comparison of Efficiency Regenerator to Fill a Stationary Designated under the Theoretical Model and Experimental Data ............................................................................................... 137 Robert Zalewski Proposition of the Controllable Granular Damper Prototype .................................................................................. 148 158