Industrail Tribology Machine Dynamics [ITMMEC]: Recent submissions
Now showing items 1-30 of 50
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Erosive wear bahavious of various polyamides
(2001)A series of polyamides (PAs), namely, PA 6, PA 66, PA 66/610, PA 11, PA 12 and aromatic PA (brittle, hard and amorphous) was selected for investigating the effect of chemical structure and hence, mechanical properties on ... -
On the abrasive wear of some polyimides and their composites
(1991)The tribological properties are not intrinsic material properties; they depend on the experimental conditions. Composites that are very suitable for one type of application may not be useful for others. With this view, it ... -
Distortion analysis of large thrust bearing on elastic support
(1991)A model for the analysis of distortion of a large thrust bearing pad is proposed. The analysis aims to simulate the realistic conditions in bearings. Free-edge boundary conditions are implemented and spring-supported pads ... -
Response of dynamically stressed material in sliding
(1991)Sliding wear has been modelled on the basis of adhesive transfer as well as fatigue. In fatigue wear modelling it is assumed that the repetitive normal and tangential stressing is responsible for crack growth leading to ... -
Studies on abrasive wear of carbon fibre (short) reinforced polyamide composites
(1992)This paper reports the results of the abrasive wear investigations of various composites of polyamide (nylon 6,6) reinforced with increasing amounts of carbon fibre against various abrasive papers under dry conditions. The ... -
Comparison of vibration and acoustic measurement techniques for the condition monitoring of rolling element bearings
(1992)The detectability of defects in ball bearings by various vibration and acoustic measurement methods is compared. Measurements have been performed on good new bearings and bearings with simulated defects in their elements. ... -
A comparison of some vibration parameters for the condition monitoring of rolling element bearings
(1994)In the present study some of the vibration parameters used for the detection of defects in rolling element bearings have been compared. Overall RMS, peak, crest factor, power and cepstrum of the vibration acceleration ... -
FMEA—A diagraph and matrix approach
(1992)This paper presents a method for failure mode and effects analysis (FMEA) of mechanical and hydraulic systems based on a diagraph and matrix approach. The method takes into account structural as well as functional interaction ... -
Evaluation of oil samples from centrifugal separators
(1993)The cleanliness of lubricating oil in plant equipment is of prime concern since particulate contamination can lead to undesirable wear. It is important to be able to measure the size distribution of such particles in order ... -
Applications of artificial intelligence techniques for induction machine stator fault diagnostics: review
(2003)The on-line fault diagnostics technology for induction machines is fast emerging for the detection of incipient faults as to avoid the unexpected failure. Approximately 30-40 % faults of induction machines are stator faults. ... -
Wear data analysis of friction materials to investigate the simultaneous influence of operating parameters and compositions
(2004)The present paper deals with the wear data analysis of friction composites where, the nature and the concentration of the abrasives were varied systematically in steps of 2%. The abrasives selected were; SiC, SiO2, ZrO2 ... -
Influence of fibers and solid lubricants on low amplitude oscillating wear of polyetherimide composites
(2004)The influence of short fiber reinforcement and solid lubricants is widely studied in rotational sliding adhesive wear mode, but not much is reported in low amplitude oscillating wear situation. In this paper a series of ... -
Performance of friction materials based on variation in nature of organic fibres: Part I. Fade and recovery behaviour
(2004)The loss in braking effectiveness at elevated temperatures and the revival of the same at lower temperatures is referred to as fade and recovery, respectively. These characteristics are of decisive importance in the ... -
Performance of friction materials based on variation in nature of organic fibres: Part II. Optimisation by balancing and ranking using multiple criteria decision model (MCDM)
(2004)Multiple criteria decision model (MCDM) is used for optimisation of several conflicting criteria dependent systems. A multiple criteria decision model (MCDM) approach taking into account the performance defining attributes ... -
Effect of impinging velocity on the erosive wear behaviour of polyamides
(2004)Various parameters, such as type, size and velocity of erodent and impact angle, are important for the erosive wear behaviour of materials. In this work, the erosive wear behaviour of various polyamides (PAs), viz. PA 6, ... -
Influence of fillers on the low amplitude oscillating wear behaviour of polyamide 11
(2004)The oscillating wear failure of the materials is frequently observed in various tribo-applications such as bearings, gears, bushes, palliatives, bolted and riveted joints and seals, etc. where oscillations of small amplitude ... -
Role of fabric reinforcement on the low amplitude oscillating wear of polyetherimide composites
(2004)Influence of fabric reinforcement in polymers is well investigated in the unidirectional sliding wear mode leading to adhesive wear of the composites, but not in the case of low amplitude oscillating (fretting or reciprocating) ... -
Failure cause identification of tribo-mechanical systems using fault tree—a digraph approach
(2003)A procedure for the failure cause identification of tribo-mechanical systems is presented based on fault-tree using a digraph approach. A variable-event system digraph for a tribo-mechanical system is suggested which takes ... -
Two-body and three-body abrasive wear behaviour of polyaryletherketone composites
(2003)Single and multipass two-body and three-body abrasive wear behaviour of various polyaryletherketone composites have been carried out by using a pin-on-disc machine and a rubber wheel abrasion test (RWAT) rig. Abrasive wear ... -
Three-body abrasive wear behaviour of polyaryletherketone composites
(2003)An experimental investigation was carried out to study the effect of reinforcement fibres, solid lubricants, mass of abrasives and load in three-body abrasive wear situations on various polyaryletherketone (PAEK) matrix. ... -
Solid particle erosion behaviour of various polyaryletherketone composites
(2003)The solid particle erosion behaviour of various polyaryletherketones (PAEKs) and their short fibre reinforced composites has been characterised. The erosion rates (ERs) of these composites have been evaluated at different ... -
Solid particle erosion of carbon fibre– and glass fibre–epoxy composites
(2003)The solid particle erosion behaviour of unidirectional carbon and glass fibre reinforced epoxy composites has been characterized. The erosive wear of these composites have been evaluated at different impingement angles ... -
On the abrasive wear behaviour of fabric-reinforced polyetherimide composites
(2002)The potential of fabric reinforcement in the thermoplastic polymers for enhancing the abrasive wear resistance has not been explored so far. Hence a series of seven composites of polyetherimide (PEI) reinforced with three ... -
Analysis of simultaneous influence of operating variables on abrasive wear of phenolic composites
(2002)The paper deals with the abrasive wear investigations on various composites of phenolic resin filled with alumina powder and abraded against silicon carbide paper under dry and single pass condition. The data analysis was ... -
Maintainability design and evaluation of mechanical systems based on tribology
(2002)Maintainability of mechanical systems based on tribology is suggested and evaluated in this paper. Tribo-features of mechanical systems, which characterise maintainability are identified and are modelled in terms of ... -
Solid particle erosion of unidirectional carbon fibre reinforced polyetheretherketone composites
(2002)The solid particle erosion behaviour of unidirectional carbon fibre (CF) reinforced polyetheretherketone (PEEK) composites has been characterised. The erosion rates of these composites have been evaluated at different ... -
Abrasive wear performance of various polyamides
(2002)Polyamides (PAs) form a major class of tribo-polymers used in almost all types of wear situations. They excel most of the engineering polymers especially in the case of abrasive wear performance. Since methylene (---CH2---) ... -
A systematic methodology to characterise the running-in and steady-state wear processes
(2002)An improved methodology has been developed to characterise running-in and steady-state wear processes. The experimental study was conducted with En 31 steel specimens on reciprocating tester with ball-on-flat geometry under ... -
Digraph and matrix methods for the machinability evaluation of work materials
(2002)This paper presents a methodology to evaluate the machinability of work materials for a given machining operation using digraph and matrix methods. A universal machinability index is proposed that evaluates and ranks work ...