Abstract: A hybrid machine (HM) as a typical mechatronic device, is a useful tool to generate smooth motion, and combines the motions of a large constant speed motor with a small servo motor by means of a mechnical linkage mechanism, in order to provide a powerful programmable drive system. To achieve design objectives, a control system is required. To design a better control system and analyze...

The under-provision of user-generated content (UGC) has reportedly resulted in the demise of many an online community. In recent years, a number of scholars have undertaken studies of possible incentives to stimulate UGC production. The incentives that have been considered to date can generally be classified into one of two groups: social and monetary. Chen et al. (2010) provide an example of w...

With increased use of composite materials in critical structural applications it is more important than ever to independently assure structural integrity. Complexity of the advanced composite materials including layered and bonded structures represents challenges in developing optimized ultrasonic tests. Traditional ultrasonic NDT methods are inappropriate and often misleading when applied to a...

R. Bakić, Tutin High School, Serbia, M. O. Abukresh, A. Sedmak. Faculty of Mechanical Engineering, University of Belgrade, Serbia, I. Samardžić, Faculty of Mechanical Engineering, Slavonski Brod, University of Osijek, Croatia, R. Jovičić, Innovation centre of the Faculty of Mechnical Engineering, Belgrade, Serbia Complex microstructure of austenite-ferrite welded joint has been investigated, fo...

Abstract Laser oscillating welding was employed to fabricate Al-Si coated press-hardened steel (PHS) improve the element homogeneity in fusion zone. with various oscillation amplitudes (0 mm, 0.5 mm and 1.3 mm) this present. Ni foil of 0.06 thickness used as an interlayer between two tailored PHS welded. The weld morphology, elemental profile, microstructure tensile strength welded joints were ...

In this work, the materials from different positions of 2219 aluminum alloy/304 stainless steel inertia friction welded tank with long‐term storage N 2 O 4 were studied. The results showed that corrosion product layer composed Fe 3 and FeCr was covered on surface steel. can effectively improve protection effect. Severe occurred in both sidewall bottom alloy, intergranular depths about 30 to 50μ...

INTRODUCTION Thumb-push manual pipettes are commonly used tools in many medical, biological, and chemical laboratories. Epidemiological studies [1] indicate that the use of pipettes is strongly associated with musculoskeletal disorders (MSDs) in the hand and shoulder. Almost 90% of pipette users, who continuously used the pipettes for more than an hour on a daily basis, reported hand and/or elb...