Abstract— Ironically, despite the growing familiarity with composite materials and ever-increasing range of applications, use of natural fibers as reinforcement in polymeric composites for technical application has been a research subject of scientist. Pineapple leaf fibre (PALF) is one of them that have also good potential as reinforcement in polymer composite. In this present work, an experim...

Abstract In general, Physical Vapor Deposition (PVD)-TiN coated High Speed Steel (HSS) endmills used to machine carbon steels can perform better at high cutting speeds compared with uncoated tools resulting in better surface finish and longer tool life. Flank wear is believed to be the main wear type that leads to shorten the life of these cutting tools. In this study, the roles of the coating ...

In this study, the effect of deposition regime on the wear behavior of VK8 coating applied to 1.2344 tool steel by electro spark method (ESA) was investigated. After sample preparation, the coating with high and low regime was applied. To assess the wear behavior, the pin on disk test method according to ASTM G99-04, was used. For surveying surface morphology and cross section of the coating as...

Atmospheric plasma spraying (APS) is a well established process for preparing ceramic coatings. In this process, powder particles injected into the plasma jet are heated and accelerated simultaneously in the plasma stream and are deposited in molten or semi-molten droplets conditions onto a prepared substrate. During droplet impingement, these molten droplets rapidly solidify to form single spl...

The present study examined wear characteristics of A356/melon shell ash particulate composites. Dry-sliding the stainless steel ball against specimen disc revealed the abrasive wear behavior of the composites under loads of 2 and 5N. The composite showed lower wear rate of 2.182 × 10-4 mm3/Nm at 20 wt% reinforced material under load of 5N. Results showed that wear rate decreased significantly w...

Wear due to relative motion between component surfaces is one of the primary modes of failure for many engineered systems. Unfortunately, it is difficult to accurately predict component life due to wear as reported wear rates generally exhibit large scatter. This paper analyzes a reciprocating tribometer in an attempt to understand the instrumentrelated sources of the scatter in measured wear r...

Tool wear increases cutting force, vibration, temperature, etc in end milling and reduces surface finish of the machined work piece. Mathematical model has been developed to predict the tool wear in terms of machining parameters such as helix angle of cutting tool, spindle speed, feed rate, axial and radial depth of cut. Central composite rotatable second order response surface methodology was ...

tan films with different n2 partial pressure were deposited on 304 stainless steel using the magnetron sputtering method. the effect of gas pressure on the mechanical property, morphology and phase structure of the films is investigated by x-ray diffraction (xrd), atomic force microscopy (afm), microhardness testing, friction coefficient measurements, and wear mechanism study. the xrd results c...

To increase the tool life of fine blanking punches, this work investigates a combined solution approach consisting increasing mechanical strength substrate material by shot peening and deposition physical vapor (PVD) hard coatings. A powder metallurgical high-speed steel (HSS) is used as material. First, temperature-dependent relaxation behavior residual stresses strain-hardening shot-peened an...

The PVD techniques range over a wide variety of applications from decorative, to high temperature superconducting films. The thickness of the deposits can vary from angstroms to millimeters. A very large number of inorganic materials—metals, alloys, compounds, and mixtures—as well as some organic materials can be deposited using Physical vapour Deposition (PVD) technologies. Traditionally, the ...