in order to help in the engineering design of rice harvesting machines, there is a need to have exact information concerning the physical and mechanical properties of rice stems. the cutting force for rice stems, therefore, was measured by designing and fabricating a static and dynamic shear test apparatus. the effects of moisture levels and the cross-sectional area of stem as well as the varie...

Drilling mud is a necessary component of drilling operations. There have been notable attempts to enhance the filtration and rheological properties increase cutting carrying capacity water-based (WBM) using nanoparticles (NPs). This study investigates how varying Al2O3 concentrations affect fluids. In this study, different muds were produced bentonite (2.8g) without nanoparticle, 50% (1.4g) Al2...

An outbreak of occupational diseases involving 38 metal workers with local infections on the hands and the face (53%), bronchitis (29%), and bronchopneumonia (18%) urged an examination of 150 samples of emulsions which the workers used in processing metals. Among the isolated bacteria, the most frequent was Pseudomonas aeruginosa (48%), followed by Escherichia coli (44%), Proteus spp. (11%), En...

In the laser cutting process some well-known parameters, e.g. laser power and cutting speed, play major roles in the performance of the process. Each parameter or a combination of parameters can affect the material removal volume and cutting volume efficiency. The purpose of this research is to study the effect of power and maximum cutting speed on the material removal rate (MRR) and cutting vo...

In recent years, hybrid manufacturing combining additive and subtractive processes is gaining increasingly importance in the industry. One of issues related to this association concerns use cutting fluids, important optimize machining part, but that can strongly affect part by generating pores laser metal deposition. The present work deals with performance a new ecological fluid dries just as w...

vibration cutting (vc), elliptical vibration cutting (evc) and ordinary cutting (oc) of in738 work-pieces have been experimentally investigated in the present research. the experiments were carried out by using single crystal diamond tool and ultra-precision cnc lathe. vibration frequency is 36.16khz and the amplitude is . the influence of various cutting parameters including cutting speed, fee...

crops and agricultural products are subject to natural loading during growth. different mechanical forces are also exerted on them during harvest. one product, sugar cane, experiences large shear forces are during harvest. an examination of the crop properties and machine parameters of sugar cane are necessary to develop appropriate cutting tools and the optimization and design of harvesting ma...

Background & Aims of the Study: Hospital safety is a critical issue since hospitals are more vulnerable than other places to traumatic incidents. Investigation of occupational accidents in hospitals could prevent these events and preserve human and financial resources. With this background in mind, the present study aimed to investigate the occupational accident and its related factors in two u...

In spite of better performance, the disposal used petroleum-based cutting fluids threatens our environment. Thus, it is essential to develop eco-friendly for performing machining operations in industries. The main contribution this paper an fluid plain turning AISI 1010 steel which automotive industry. present work, boric acid (H3BO3) was mixed with neem seed. Neem seed oil easily available man...