On time replacement of a cutting tool with a new one is an important task in Flexible Manufacturing Systems (FMS). A fuzzy logic-based approach was used in the present study to predict and simulate the tool wear progress in turning operation. Cutting parameters and cutting forces were considered as the input and the wear rate was regarded as the output data in the fuzzy logic for construct...

The average life span of knee prosthesis used in Total Knee Replacement (TKR) is approximately 10 to 15 years. Literature indicates that the reasons for implant failures include wear, infection, instability, and stiffness. However, the majority of failures are due to wear and tear of the prosthesis. The most common biopolymer used in TKR  is Ultra High Molecular Weight Polyethylene (UHMWPE). Pr...

In industrial production systems, including the most important factors in the economic field machining operations, reduce tool wear due to abrasive nature of the phenomenon on many factors, including temperature Lathe tool, influences, machining conditions (cutting speed, speed losses, forcing to rebuild parts of the manufacturing tolerances disassemble tool wear is caused by the phenomenon, as...

in this study the effect of input parameters of the edm process (pulse on-time, duty cycle and tool polarity), on the material removal rate (mrr), tool wear ratio (twr) and maximum surface roughness (rmax) in the machining aisi h13 tool steel has been studied. this study shows that increasing the duty cycle in the two conditions of tool polarity, material removal rate and the maximum surface ro...

In this study the effect of Al–5Ti–1B grain refiner on the structural characteristics and wear properties of Al–12Zn–3Mg–2.5Cu alloy was investigated. The optimum amount for Ti containing grain refiners was selected as 2 wt.%. T6 heat treatment, (i.e. heating at 460 °C for 1 h before water quenching to room temperature and then aging at 120 °C for 24 h) was applied for all specimens before wear...

Fifty conjunctival swab samples collected from ELISA confirmed HIV/AIDS seropositive patients who were referred to the HIV/AIDS laboratories of the University of Benin Teaching Hospital and Central Hospital both based in Benin City, Nigeria were aseptically cultured on appropriate media by standard methods. The resulting isolates/strains, after identification by standard methods, were tested fo...

Computer interfaces such as mouse, track balls, and light pens etc. provide users with a way of controlling and manipulating the display of information on a computer screen. Although a mouse is popular and effective it has disadvantages typically in the circumstances where; ⇛ The user wants to use hands for other purpose, e.g., the user wants to use keyboard for typing simultaneously. ⇛ The use...

In patients suffering of osteoarthritis of the hip (a degenerative condition of the hip that finally leads to anatomical and functional impairment of the joint), the only efficient treatment in advanced stages of the disease is the surgical replacement of the joint with a total hip prosthesis. Unfortunately, despite improving the composition of the materials from which these prostheses are made...

introduction: mother as the main attachment figure has an undeniable effect on affective development of the child. the aim of the current study was to investigate the relationship and predictability of girls` attachment problems through mothers` attachment style. method: sample included 388 individuals of second and fourth grade of primary school that had been chosen through multistage cluster ...