J. Belan, Faculty of Mechanical Engineering, University of Žilina, Žilina, Slovak Republic INCONEL alloy 718 is a high-strength; corrosion-resistant nickel chromium material used at -253 °C to 705 °C for production of heat resistant parts of aero jet engine mostly. The fatigue test provided on this kind materials were done via low frequency loading up to this time. Nowadays, needs of results at...

A new advanced system for Ultrasonic Peening (UP) of materials, details and welded elements was developed recently. The UP produces a number of beneficial effects in metals and alloys. Foremost among these is increasing the resistance of materials to surface-related failures, such as fatigue, fretting fatigue and stress corrosion cracking. The beneficial effect is achieved mainly by relieving o...

Bulk-metallic glasses (BMGs) are now candidate materials for structural applications due to their exceptional strength and toughness. However, their fatigue resistance can be poor and inconsistent, severely limiting their potential as reliable structural materials. As fatigue limits are invariably governed by the local arrest of microscopically small cracks at microstructural features, the lack...

The number of revision total hip arthroplasties is predicted to more than double in USA over the next 25 years from an estimated 40800 in 2005 to approximately 96700 in 2030 [1]. Modular femoral stems offer the advantage of adjustment and restoration of joint kinematics including leg length, femoral version and offset, regardless of the exact position of the distal part of the stem [2]. Disadva...

Nondestructive evaluation technologies have recently been challenged to inspect thick, layered, conducting materials for fatigue and corrosion damage. Structures that fall into this class, such as airframe wings, pose significant difficulties for conventional inspection techniques. Reflections of ultrasound at layer boundaries cause serious problems for the application of ultrasonic inspection ...

 provision of large, stress-bearing area  excellent fatigue strength  good shock absorption  reduced galvanic corrosion  no need to have access to far-side of adherend to make joint  bonding is possible on dissimilar materials  provision of smooth contours and sections around joint areas  sealing  improved damping which increases structural stiffness  reduction in distortion and metal...

PURPOSE: The deterioration of elements of steel hydraulic structures (SHS) on our nation’s lock system is caused by combined effects of several complex phenomena: corrosion, cracking and fatigue, impact, and overloads. This Coastal and Hydraulics Engineering Technical Note presents examples of deterioration and a method for predicting future deterioration based on current conditions. In a compa...

For the new products, it is necessary to acquire new technologies to produce and process them. Mostly the product quality depends upon on the surface roughness, fatigue life improvement, corrosion resistance, aesthetics, precision fit of mating surfaces etc., because this affects on product quality. This paper provides literature review on machining parameters, such as cutting speed (Vc), feed ...