The paper describes results obtained from plate-impact pressure-shear friction experiments to investigate the phenomena of high-speed slip at metal-on-metal interfaces. Using a CH toolsteel/Ti-6Al-4V tribo-pair the authors have studied the effects of normal pressure, slip-speed, temperature and surface roughness on the evolution of the dynamic slip-resistance. Moreover, a finite-element procedu...

This paper introduces an experimental technique to investigate dynamic friction characteristics of sliding interfaces at normal pressures up to 125 MPa, slip speeds up to 15 m/s and slip distances of approximately 10 mm. This new apparatus involves a novel modification of the conventional torsional Kolsky bar apparatus employed extensively in the past to investigate high-strain-rate behavior of...

ABSTRAK Aluminium merupakan logam yang paling banyak digunakan setelah baja, dengan karakteristik utamanya adalah ringan (berat jenis = 2.7 g/cm3), memiliki konduktivitas panas dan listrik tinggi, ketahanan korosi baik. Penggunaan aluminium menempati urutan kedua besi baja sebagai bahan untuk komponen industri otomotif, salah satu penggunaanya yaitu berupa pada mobil. seri 7075 mana sifat baik ...

This article addresses diagnosis and prognosis of evolving fatigue crack damage in polycrystalline alloy structures. It presents a statistically inspired recursive method for in situ estimation of the remaining useful life in machinery components, based on real-time measurements. The underlying algorithm is built upon (a) symbolic dynamic filtering of (online) ultrasonic sensor data and (b) Kar...